mirror of https://gitee.com/openkylin/linux.git
1248 Commits
| Author | SHA1 | Message | Date |
|---|---|---|---|
Linus Torvalds
|
d790be3863 |
The exciting thing here is the getting rid of stop_machine on module
removal. This is possible by using a simple atomic_t for the counter, rather than our fancy per-cpu counter: it turns out that no one is doing a module increment per net packet, so the slowdown should be in the noise. Also, script fixed for new git version. Cheers, Rusty. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJUk3cQAAoJENkgDmzRrbjxr44P/25ZBYmKZZ3XM3flt2o0LCti 1Px+MRbWuXhueWQOYZSXOO3c2ENNuV3siaU4jQZqnxslpdvT4rVsVFkYuwva2vHT hqpoq1Hz++yjFJArjERFOdoZ1gxkBbZQQGYm8esToAqU3b2Z74SrU48dPwp65q/1 r6hbXdWSiKALEBZeW2coi+QVCL/oxE8hmNqDO1mpe82aEKu0xIVpTdU5vAfBIj8/ Z95U2bx+CjiP7khhSjBGtltLqxL6QXw1m2eg1gO9nf1gJNI0/dAY6IJmFbGz+7Bt CAyc9BRsB40Em8G7d7wr4FsURcLfmYNdjtx79j+Rot5PkVIi+Ztv7C1QYlMQESPa ESddUMySOmKlzTm50w3ZLvV1ZTRU8TjmttSkzQYZ3csCLkKUgfeL9SAxU9KGoA2l jFxrvDcWEHtuU1D/FeYyOofNaD/BflPfdhj4WAm9XnPPi+THEu7fulWJaIP4glHh 8TpYNbinXuZqXO4nJ41Ad5utbSbBQa4fFBUuViWRTU0TtWJT2HVqn/XoYJ5mnPEz IbYh31rQDKFJKzePfscWrJ6XzoF59yGiAVcWcI3HS7aT8bFZGapAQu9mNCVu+cLF uRxWrukHG7d8YeYrAtbVXWfxArR155V9QJN55hQ1nKLq2M03gNvYTtAPw2yEsfuw u3Fk/KkV1RfaiFurjoG/ =rDum -----END PGP SIGNATURE----- Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull module updates from Rusty Russell: "The exciting thing here is the getting rid of stop_machine on module removal. This is possible by using a simple atomic_t for the counter, rather than our fancy per-cpu counter: it turns out that no one is doing a module increment per net packet, so the slowdown should be in the noise" * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: param: do not set store func without write perm params: cleanup sysfs allocation kernel:module Fix coding style errors and warnings. module: Remove stop_machine from module unloading module: Replace module_ref with atomic_t refcnt lib/bug: Use RCU list ops for module_bug_list module: Unlink module with RCU synchronizing instead of stop_machine module: Wait for RCU synchronizing before releasing a module |
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James Bottomley
|
e617457691 | Merge remote-tracking branch 'scsi-queue/drivers-for-3.19' into for-linus | |
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Linus Torvalds
|
0b233b7c79 |
Merge branch 'for-3.19' of git://linux-nfs.org/~bfields/linux
Pull nfsd updates from Bruce Fields:
"A comparatively quieter cycle for nfsd this time, but still with two
larger changes:
- RPC server scalability improvements from Jeff Layton (using RCU
instead of a spinlock to find idle threads).
- server-side NFSv4.2 ALLOCATE/DEALLOCATE support from Anna
Schumaker, enabling fallocate on new clients"
* 'for-3.19' of git://linux-nfs.org/~bfields/linux: (32 commits)
nfsd4: fix xdr4 count of server in fs_location4
nfsd4: fix xdr4 inclusion of escaped char
sunrpc/cache: convert to use string_escape_str()
sunrpc: only call test_bit once in svc_xprt_received
fs: nfsd: Fix signedness bug in compare_blob
sunrpc: add some tracepoints around enqueue and dequeue of svc_xprt
sunrpc: convert to lockless lookup of queued server threads
sunrpc: fix potential races in pool_stats collection
sunrpc: add a rcu_head to svc_rqst and use kfree_rcu to free it
sunrpc: require svc_create callers to pass in meaningful shutdown routine
sunrpc: have svc_wake_up only deal with pool 0
sunrpc: convert sp_task_pending flag to use atomic bitops
sunrpc: move rq_cachetype field to better optimize space
sunrpc: move rq_splice_ok flag into rq_flags
sunrpc: move rq_dropme flag into rq_flags
sunrpc: move rq_usedeferral flag to rq_flags
sunrpc: move rq_local field to rq_flags
sunrpc: add a generic rq_flags field to svc_rqst and move rq_secure to it
nfsd: minor off by one checks in __write_versions()
sunrpc: release svc_pool_map reference when serv allocation fails
...
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Linus Torvalds
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988adfdffd |
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
"Highlights:
- AMD KFD driver merge
This is the AMD HSA interface for exposing a lowlevel interface for
GPGPU use. They have an open source userspace built on top of this
interface, and the code looks as good as it was going to get out of
tree.
- Initial atomic modesetting work
The need for an atomic modesetting interface to allow userspace to
try and send a complete set of modesetting state to the driver has
arisen, and been suffering from neglect this past year. No more,
the start of the common code and changes for msm driver to use it
are in this tree. Ongoing work to get the userspace ioctl finished
and the code clean will probably wait until next kernel.
- DisplayID 1.3 and tiled monitor exposed to userspace.
Tiled monitor property is now exposed for userspace to make use of.
- Rockchip drm driver merged.
- imx gpu driver moved out of staging
Other stuff:
- core:
panel - MIPI DSI + new panels.
expose suggested x/y properties for virtual GPUs
- i915:
Initial Skylake (SKL) support
gen3/4 reset work
start of dri1/ums removal
infoframe tracking
fixes for lots of things.
- nouveau:
tegra k1 voltage support
GM204 modesetting support
GT21x memory reclocking work
- radeon:
CI dpm fixes
GPUVM improvements
Initial DPM fan control
- rcar-du:
HDMI support added
removed some support for old boards
slave encoder driver for Analog Devices adv7511
- exynos:
Exynos4415 SoC support
- msm:
a4xx gpu support
atomic helper conversion
- tegra:
iommu support
universal plane support
ganged-mode DSI support
- sti:
HDMI i2c improvements
- vmwgfx:
some late fixes.
- qxl:
use suggested x/y properties"
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (969 commits)
drm: sti: fix module compilation issue
drm/i915: save/restore GMBUS freq across suspend/resume on gen4
drm: sti: correctly cleanup CRTC and planes
drm: sti: add HQVDP plane
drm: sti: add cursor plane
drm: sti: enable auxiliary CRTC
drm: sti: fix delay in VTG programming
drm: sti: prepare sti_tvout to support auxiliary crtc
drm: sti: use drm_crtc_vblank_{on/off} instead of drm_vblank_{on/off}
drm: sti: fix hdmi avi infoframe
drm: sti: remove event lock while disabling vblank
drm: sti: simplify gdp code
drm: sti: clear all mixer control
drm: sti: remove gpio for HDMI hot plug detection
drm: sti: allow to change hdmi ddc i2c adapter
drm/doc: Document drm_add_modes_noedid() usage
drm/i915: Remove '& 0xffff' from the mask given to WA_REG()
drm/i915: Invert the mask and val arguments in wa_add() and WA_REG()
drm: Zero out DRM object memory upon cleanup
drm/i915/bdw: Fix the write setting up the WIZ hashing mode
...
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Linus Torvalds
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9bfccec24e |
Lots of bugs fixes, including Zheng and Jan's extent status shrinker
fixes, which should improve CPU utilization and potential soft lockups
under heavy memory pressure, and Eric Whitney's bigalloc fixes.
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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"Lots of bugs fixes, including Zheng and Jan's extent status shrinker
fixes, which should improve CPU utilization and potential soft lockups
under heavy memory pressure, and Eric Whitney's bigalloc fixes"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (26 commits)
ext4: ext4_da_convert_inline_data_to_extent drop locked page after error
ext4: fix suboptimal seek_{data,hole} extents traversial
ext4: ext4_inline_data_fiemap should respect callers argument
ext4: prevent fsreentrance deadlock for inline_data
ext4: forbid journal_async_commit in data=ordered mode
jbd2: remove unnecessary NULL check before iput()
ext4: Remove an unnecessary check for NULL before iput()
ext4: remove unneeded code in ext4_unlink
ext4: don't count external journal blocks as overhead
ext4: remove never taken branch from ext4_ext_shift_path_extents()
ext4: create nojournal_checksum mount option
ext4: update comments regarding ext4_delete_inode()
ext4: cleanup GFP flags inside resize path
ext4: introduce aging to extent status tree
ext4: cleanup flag definitions for extent status tree
ext4: limit number of scanned extents in status tree shrinker
ext4: move handling of list of shrinkable inodes into extent status code
ext4: change LRU to round-robin in extent status tree shrinker
ext4: cache extent hole in extent status tree for ext4_da_map_blocks()
ext4: fix block reservation for bigalloc filesystems
...
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Linus Torvalds
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bae41e45b7 |
sound updates for 3.19-rc1
This became a fairly large pull request. In addition to the usual
driver updates / fixes, there have been a high amount of cleanups in
ASoC area, as well as control API helpers and kernel documentations
fixes touching through the whole tree.
In the driver side, the biggest changes are the support for new Intel
SoC found on new x86 machines, and the updates of FireWire dice and
oxfw drivers.
Some remarkable items are below:
* ALSA core
- PCM mmap code cleanup, removal of arch-dependent codes
- PCM xrun injection support
- PCM hwptr tracepoint support
- Refactoring of snd_pcm_action(), simplification of PCM locking
- Robustified sequecner auto-load functionality
- New control API helpers and lots of cleanups along with them
- Lots of kerneldoc fixes and cleanups
* USB-audio
- The mixer resume code was largely rewritten, and the devices with
quirks are resumed properly.
- New hardware support: Focusrite Scarlett, Digidesign Mbox1,
Denon/Marantz DACs, Zoom R16/24
* FireWire
- DICE driver updates with better duplex and sync support, including
MIDI support
- New OXFW driver for Oxford Semiconductor FW970/971 chipset,
including the previous LaCie Speakers device. Fullduplex and MIDI
support included as well as DICE driver.
* HD-audio
- Refactoring the driver-caps quirk handling in snd-hda-intel
- More consistent control names representing the topology better
- Fixups: HP mute LED with ALC268 codec, Ideapad S210 built-in mic
fix, ASUS Z99He laptop EAPD
* ASoC
- Conversion of AC'97 drivers to use regmap, bringing us closer to
the removal of the ASoC level I/O code
- Clean up a lot of old drivers that were open coding things that
have subsequently been implemented in the core
- Some DAPM performance improvements
- Removal of the now seldom used CODEC mutex
- Lots of updates for the newer Intel SoC support, including support
for the DSP and some Cherrytrail and Braswell machine drivers
- Support for Samsung boards using rt5631 as the CODEC
- Removal of the obsolete AFEB9260 machine driver
- Driver support for the TI TS3A227E headset driver used in some
Chrombeooks
* Others
- ASIHPI driver update and cleanups
- Lots of dev_*() printk conversions
- Lots of trivial cleanups for the codes spotted by Coccinelle
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Merge tag 'sound-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"This became a fairly large pull request. In addition to the usual
driver updates / fixes, there have been a high amount of cleanups in
ASoC area, as well as control API helpers and kernel documentations
fixes touching through the whole tree.
In the driver side, the biggest changes are the support for new Intel
SoC found on new x86 machines, and the updates of FireWire dice and
oxfw drivers.
Some remarkable items are below:
ALSA core:
- PCM mmap code cleanup, removal of arch-dependent codes
- PCM xrun injection support
- PCM hwptr tracepoint support
- Refactoring of snd_pcm_action(), simplification of PCM locking
- Robustified sequecner auto-load functionality
- New control API helpers and lots of cleanups along with them
- Lots of kerneldoc fixes and cleanups
USB-audio:
- The mixer resume code was largely rewritten, and the devices with
quirks are resumed properly.
- New hardware support: Focusrite Scarlett, Digidesign Mbox1,
Denon/Marantz DACs, Zoom R16/24
FireWire:
- DICE driver updates with better duplex and sync support, including
MIDI support
- New OXFW driver for Oxford Semiconductor FW970/971 chipset,
including the previous LaCie Speakers device. Fullduplex and MIDI
support included as well as DICE driver.
HD-audio:
- Refactoring the driver-caps quirk handling in snd-hda-intel
- More consistent control names representing the topology better
- Fixups: HP mute LED with ALC268 codec, Ideapad S210 built-in mic
fix, ASUS Z99He laptop EAPD
ASoC:
- Conversion of AC'97 drivers to use regmap, bringing us closer to
the removal of the ASoC level I/O code
- Clean up a lot of old drivers that were open coding things that
have subsequently been implemented in the core
- Some DAPM performance improvements
- Removal of the now seldom used CODEC mutex
- Lots of updates for the newer Intel SoC support, including support
for the DSP and some Cherrytrail and Braswell machine drivers
- Support for Samsung boards using rt5631 as the CODEC
- Removal of the obsolete AFEB9260 machine driver
- Driver support for the TI TS3A227E headset driver used in some
Chrombeooks
Others:
- ASIHPI driver update and cleanups
- Lots of dev_*() printk conversions
- Lots of trivial cleanups for the codes spotted by Coccinelle"
* tag 'sound-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (594 commits)
ALSA: pcxhr: NULL dereference on probe failure
ALSA: lola: NULL dereference on probe failure
ALSA: hda - Add "eapd" model string for AD1986A codec
ALSA: hda - Add EAPD fixup for ASUS Z99He laptop
ALSA: oxfw: Add hwdep interface
ALSA: oxfw: Add support for capture/playback MIDI messages
ALSA: oxfw: add support for capturing PCM samples
ALSA: oxfw: Add support AMDTP in-stream
ALSA: oxfw: Add support for Behringer/Mackie devices
ALSA: oxfw: Change the way to start stream
ALSA: oxfw: Add proc interface for debugging purpose
ALSA: oxfw: Change the way to make PCM rules/constraints
ALSA: oxfw: Add support for AV/C stream format command to get/set supported stream formation
ALSA: oxfw: Change the way to name card
ALSA: dice: Add support for MIDI capture/playback
ALSA: dice: Add support for capturing PCM samples
ALSA: dice: Support for non SYT-Match sampling clock source mode
ALSA: dice: Add support for duplex streams with synchronization
ALSA: dice: Change the way to start stream
ALSA: jack: Add dummy snd_jack_set_key() definition
...
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Linus Torvalds
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1dd7dcb6ea |
There was a lot of clean ups and minor fixes. One of those clean ups was
to the trace_seq code. It also removed the return values to the
trace_seq_*() functions and use trace_seq_has_overflowed() to see if
the buffer filled up or not. This is similar to work being done to the
seq_file code as well in another tree.
Some of the other goodies include:
o Added some "!" (NOT) logic to the tracing filter.
o Fixed the frame pointer logic to the x86_64 mcount trampolines
o Added the logic for dynamic trampolines on !CONFIG_PREEMPT systems.
That is, the ftrace trampoline can be dynamically allocated
and be called directly by functions that only have a single hook
to them.
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Merge tag 'trace-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
"There was a lot of clean ups and minor fixes. One of those clean ups
was to the trace_seq code. It also removed the return values to the
trace_seq_*() functions and use trace_seq_has_overflowed() to see if
the buffer filled up or not. This is similar to work being done to
the seq_file code as well in another tree.
Some of the other goodies include:
- Added some "!" (NOT) logic to the tracing filter.
- Fixed the frame pointer logic to the x86_64 mcount trampolines
- Added the logic for dynamic trampolines on !CONFIG_PREEMPT systems.
That is, the ftrace trampoline can be dynamically allocated and be
called directly by functions that only have a single hook to them"
* tag 'trace-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (55 commits)
tracing: Truncated output is better than nothing
tracing: Add additional marks to signal very large time deltas
Documentation: describe trace_buf_size parameter more accurately
tracing: Allow NOT to filter AND and OR clauses
tracing: Add NOT to filtering logic
ftrace/fgraph/x86: Have prepare_ftrace_return() take ip as first parameter
ftrace/x86: Get rid of ftrace_caller_setup
ftrace/x86: Have save_mcount_regs macro also save stack frames if needed
ftrace/x86: Add macro MCOUNT_REG_SIZE for amount of stack used to save mcount regs
ftrace/x86: Simplify save_mcount_regs on getting RIP
ftrace/x86: Have save_mcount_regs store RIP in %rdi for first parameter
ftrace/x86: Rename MCOUNT_SAVE_FRAME and add more detailed comments
ftrace/x86: Move MCOUNT_SAVE_FRAME out of header file
ftrace/x86: Have static tracing also use ftrace_caller_setup
ftrace/x86: Have static function tracing always test for function graph
kprobes: Add IPMODIFY flag to kprobe_ftrace_ops
ftrace, kprobes: Support IPMODIFY flag to find IP modify conflict
kprobes/ftrace: Recover original IP if pre_handler doesn't change it
tracing/trivial: Fix typos and make an int into a bool
tracing: Deletion of an unnecessary check before iput()
...
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Linus Torvalds
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e20db597b6 |
NFS client updates for Linux 3.19
Highlights include:
Features:
- NFSv4.2 client support for hole punching and preallocation.
- Further RPC/RDMA client improvements.
- Add more RPC transport debugging tracepoints.
- Add RPC debugging tools in debugfs.
Bugfixes:
- Stable fix for layoutget error handling
- Fix a change in COMMIT behaviour resulting from the recent io code updates
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Merge tag 'nfs-for-3.19-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Highlights include:
Features:
- NFSv4.2 client support for hole punching and preallocation.
- Further RPC/RDMA client improvements.
- Add more RPC transport debugging tracepoints.
- Add RPC debugging tools in debugfs.
Bugfixes:
- Stable fix for layoutget error handling
- Fix a change in COMMIT behaviour resulting from the recent io code
updates"
* tag 'nfs-for-3.19-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (28 commits)
sunrpc: add a debugfs rpc_xprt directory with an info file in it
sunrpc: add debugfs file for displaying client rpc_task queue
nfs: Add DEALLOCATE support
nfs: Add ALLOCATE support
NFS: Clean up nfs4_init_callback()
NFS: SETCLIENTID XDR buffer sizes are incorrect
SUNRPC: serialize iostats updates
xprtrdma: Display async errors
xprtrdma: Enable pad optimization
xprtrdma: Re-write rpcrdma_flush_cqs()
xprtrdma: Refactor tasklet scheduling
xprtrdma: unmap all FMRs during transport disconnect
xprtrdma: Cap req_cqinit
xprtrdma: Return an errno from rpcrdma_register_external()
nfs: define nfs_inc_fscache_stats and using it as possible
nfs: replace nfs_add_stats with nfs_inc_stats when add one
NFS: Deletion of unnecessary checks before the function call "nfs_put_client"
sunrpc: eliminate RPC_TRACEPOINTS
sunrpc: eliminate RPC_DEBUG
lockd: eliminate LOCKD_DEBUG
...
|
|
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Linus Torvalds
|
86c6a2fddf |
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"The main changes in this cycle are:
- 'Nested Sleep Debugging', activated when CONFIG_DEBUG_ATOMIC_SLEEP=y.
This instruments might_sleep() checks to catch places that nest
blocking primitives - such as mutex usage in a wait loop. Such
bugs can result in hard to debug races/hangs.
Another category of invalid nesting that this facility will detect
is the calling of blocking functions from within schedule() ->
sched_submit_work() -> blk_schedule_flush_plug().
There's some potential for false positives (if secondary blocking
primitives themselves are not ready yet for this facility), but the
kernel will warn once about such bugs per bootup, so the warning
isn't much of a nuisance.
This feature comes with a number of fixes, for problems uncovered
with it, so no messages are expected normally.
- Another round of sched/numa optimizations and refinements, for
CONFIG_NUMA_BALANCING=y.
- Another round of sched/dl fixes and refinements.
Plus various smaller fixes and cleanups"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
sched: Add missing rcu protection to wake_up_all_idle_cpus
sched/deadline: Introduce start_hrtick_dl() for !CONFIG_SCHED_HRTICK
sched/numa: Init numa balancing fields of init_task
sched/deadline: Remove unnecessary definitions in cpudeadline.h
sched/cpupri: Remove unnecessary definitions in cpupri.h
sched/deadline: Fix rq->dl.pushable_tasks bug in push_dl_task()
sched/fair: Fix stale overloaded status in the busiest group finding logic
sched: Move p->nr_cpus_allowed check to select_task_rq()
sched/completion: Document when to use wait_for_completion_io_*()
sched: Update comments about CLONE_NEWUTS and CLONE_NEWIPC
sched/fair: Kill task_struct::numa_entry and numa_group::task_list
sched: Refactor task_struct to use numa_faults instead of numa_* pointers
sched/deadline: Don't check CONFIG_SMP in switched_from_dl()
sched/deadline: Reschedule from switched_from_dl() after a successful pull
sched/deadline: Push task away if the deadline is equal to curr during wakeup
sched/deadline: Add deadline rq status print
sched/deadline: Fix artificial overrun introduced by yield_task_dl()
sched/rt: Clean up check_preempt_equal_prio()
sched/core: Use dl_bw_of() under rcu_read_lock_sched()
sched: Check if we got a shallowest_idle_cpu before searching for least_loaded_cpu
...
|
|
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Linus Torvalds
|
c30110608c |
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar:
"These are the main changes in this cycle:
- Streamline RCU's use of per-CPU variables, shifting from "cpu"
arguments to functions to "this_"-style per-CPU variable
accessors.
- signal-handling RCU updates.
- real-time updates.
- torture-test updates.
- miscellaneous fixes.
- documentation updates"
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
rcu: Fix FIXME in rcu_tasks_kthread()
rcu: More info about potential deadlocks with rcu_read_unlock()
rcu: Optimize cond_resched_rcu_qs()
rcu: Add sparse check for RCU_INIT_POINTER()
documentation: memory-barriers.txt: Correct example for reorderings
documentation: Add atomic_long_t to atomic_ops.txt
documentation: Additional restriction for control dependencies
documentation: Document RCU self test boot params
rcutorture: Fix rcu_torture_cbflood() memory leak
rcutorture: Remove obsolete kversion param in kvm.sh
rcutorture: Remove stale test configurations
rcutorture: Enable RCU self test in configs
rcutorture: Add early boot self tests
torture: Run Linux-kernel binary out of results directory
cpu: Avoid puts_pending overflow
rcu: Remove "cpu" argument to rcu_cleanup_after_idle()
rcu: Remove "cpu" argument to rcu_prepare_for_idle()
rcu: Remove "cpu" argument to rcu_needs_cpu()
rcu: Remove "cpu" argument to rcu_note_context_switch()
rcu: Remove "cpu" argument to rcu_preempt_check_callbacks()
...
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|
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Jeff Layton
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83a712e0af |
sunrpc: add some tracepoints around enqueue and dequeue of svc_xprt
These were useful when I was tracking down a race condition between svc_xprt_do_enqueue and svc_get_next_xprt. Signed-off-by: Jeff Layton <jlayton@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> |
|
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Jeff Layton
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b1691bc03d |
sunrpc: convert to lockless lookup of queued server threads
Testing has shown that the pool->sp_lock can be a bottleneck on a busy server. Every time data is received on a socket, the server must take that lock in order to dequeue a thread from the sp_threads list. Address this problem by eliminating the sp_threads list (which contains threads that are currently idle) and replacing it with a RQ_BUSY flag in svc_rqst. This allows us to walk the sp_all_threads list under the rcu_read_lock and find a suitable thread for the xprt by doing a test_and_set_bit. Note that we do still have a potential atomicity problem however with this approach. We don't want svc_xprt_do_enqueue to set the rqst->rq_xprt pointer unless a test_and_set_bit of RQ_BUSY returned zero (which indicates that the thread was idle). But, by the time we check that, the bit could be flipped by a waking thread. To address this, we acquire a new per-rqst spinlock (rq_lock) and take that before doing the test_and_set_bit. If that returns false, then we can set rq_xprt and drop the spinlock. Then, when the thread wakes up, it must set the bit under the same spinlock and can trust that if it was already set then the rq_xprt is also properly set. With this scheme, the case where we have an idle thread no longer needs to take the highly contended pool->sp_lock at all, and that removes the bottleneck. That still leaves one issue: What of the case where we walk the whole sp_all_threads list and don't find an idle thread? Because the search is lockess, it's possible for the queueing to race with a thread that is going to sleep. To address that, we queue the xprt and then search again. If we find an idle thread at that point, we can't attach the xprt to it directly since that might race with a different thread waking up and finding it. All we can do is wake the idle thread back up and let it attempt to find the now-queued xprt. Signed-off-by: Jeff Layton <jlayton@primarydata.com> Tested-by: Chris Worley <chris.worley@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> |
|
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Jeff Layton
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812443865c |
sunrpc: add a rcu_head to svc_rqst and use kfree_rcu to free it
...also make the manipulation of sp_all_threads list use RCU-friendly functions. Signed-off-by: Jeff Layton <jlayton@primarydata.com> Tested-by: Chris Worley <chris.worley@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> |
|
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Jeff Layton
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779fb0f3af |
sunrpc: move rq_splice_ok flag into rq_flags
Signed-off-by: Jeff Layton <jlayton@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> |
|
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Jeff Layton
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78b65eb3fd |
sunrpc: move rq_dropme flag into rq_flags
Signed-off-by: Jeff Layton <jlayton@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> |
|
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Jeff Layton
|
30660e04b0 |
sunrpc: move rq_usedeferral flag to rq_flags
Signed-off-by: Jeff Layton <jlayton@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> |
|
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Jeff Layton
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7501cc2bcf |
sunrpc: move rq_local field to rq_flags
Signed-off-by: Jeff Layton <jlayton@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> |
|
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Jeff Layton
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4d152e2c9a |
sunrpc: add a generic rq_flags field to svc_rqst and move rq_secure to it
In a later patch, we're going to need some atomic bit flags. Since that field will need to be an unsigned long, we mitigate that space consumption by migrating some other bitflags to the new field. Start with the rq_secure flag. Signed-off-by: Jeff Layton <jlayton@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> |
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Mark Brown
|
3ee3f45463 | Merge remote-tracking branch 'asoc/topic/cache' into asoc-next | |
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Christoph Hellwig
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68d81f4004 |
scsi: remove MSG_*_TAG defines
For SPI drivers use the message definitions from scsi.h, and for target drivers introduce a new TCM_*_TAG namespace. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com |
|
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Zheng Liu
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edaa53cac8 |
ext4: change LRU to round-robin in extent status tree shrinker
In this commit we discard the lru algorithm for inodes with extent status tree because it takes significant effort to maintain a lru list in extent status tree shrinker and the shrinker can take a long time to scan this lru list in order to reclaim some objects. We replace the lru ordering with a simple round-robin. After that we never need to keep a lru list. That means that the list needn't be sorted if the shrinker can not reclaim any objects in the first round. Cc: Andreas Dilger <adilger.kernel@dilger.ca> Signed-off-by: Zheng Liu <wenqing.lz@taobao.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu> |
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Zheng Liu
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2f8e0a7c6c |
ext4: cache extent hole in extent status tree for ext4_da_map_blocks()
Currently extent status tree doesn't cache extent hole when a write looks up in extent tree to make sure whether a block has been allocated or not. In this case, we don't put extent hole in extent cache because later this extent might be removed and a new delayed extent might be added back. But it will cause a defect when we do a lot of writes. If we don't put extent hole in extent cache, the following writes also need to access extent tree to look at whether or not a block has been allocated. It brings a cache miss. This commit fixes this defect. Also if the inode doesn't have any extent, this extent hole will be cached as well. Cc: Andreas Dilger <adilger.kernel@dilger.ca> Signed-off-by: Zheng Liu <wenqing.lz@taobao.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu> |
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Jan Kara
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cbd7584e6e |
ext4: fix block reservation for bigalloc filesystems
For bigalloc filesystems we have to check whether newly requested inode block isn't already part of a cluster for which we already have delayed allocation reservation. This check happens in ext4_ext_map_blocks() and that function sets EXT4_MAP_FROM_CLUSTER if that's the case. However if ext4_da_map_blocks() finds in extent cache information about the block, we don't call into ext4_ext_map_blocks() and thus we always end up getting new reservation even if the space for cluster is already reserved. This results in overreservation and premature ENOSPC reports. Fix the problem by checking for existing cluster reservation already in ext4_da_map_blocks(). That simplifies the logic and actually allows us to get rid of the EXT4_MAP_FROM_CLUSTER flag completely. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu> |
|
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Hannes Reinecke
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eb846d9f14 |
scsi: rename SERVICE_ACTION_IN to SERVICE_ACTION_IN_16
SPC-3 defines SERVICE ACTION IN(12) and SERVICE ACTION IN(16). So rename SERVICE_ACTION_IN to SERVICE_ACTION_IN_16 to be consistent with SPC and to allow for better distinction. Signed-off-by: Hannes Reinecke <hare@suse.de> Tested-by: Robert Elliott <elliott@hp.com> Reviewed-by: Robert Elliott <elliott@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de> |
|
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Jeff Layton
|
1a867a0898 |
sunrpc: add tracepoints in xs_tcp_data_recv
Add tracepoints inside the main loop on xs_tcp_data_recv that allow us to keep an eye on what's happening during each phase of it. Signed-off-by: Jeff Layton <jlayton@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> |
|
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Jeff Layton
|
3705ad64f1 |
sunrpc: add new tracepoints in xprt handling code
...so we can keep track of when calls are sent and replies received. Signed-off-by: Jeff Layton <jlayton@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> |
|
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Jeff Layton
|
860a0d9e51 |
sunrpc: add some tracepoints in svc_rqst handling functions
...just around svc_send, svc_recv and svc_process for now. Signed-off-by: Jeff Layton <jlayton@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> |
|
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Ingo Molnar
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d360b78f99 |
Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney: - Streamline RCU's use of per-CPU variables, shifting from "cpu" arguments to functions to "this_"-style per-CPU variable accessors. - Signal-handling RCU updates. - Real-time updates. - Torture-test updates. - Miscellaneous fixes. - Documentation updates. Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
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Steven Rostedt (Red Hat)
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8e2e095cbe |
tracing: Fix return value of ftrace_raw_output_prep()
If the trace_seq of ftrace_raw_output_prep() is full this function returns TRACE_TYPE_PARTIAL_LINE, otherwise it returns zero. The problem is that TRACE_TYPE_PARTIAL_LINE happens to be zero! The thing is, the caller of ftrace_raw_output_prep() expects a success to be zero. Change that to expect it to be TRACE_TYPE_HANDLED. Link: http://lkml.kernel.org/r/20141114112522.GA2988@dhcp128.suse.cz Reminded-by: Petr Mladek <pmladek@suse.cz> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
|
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Steven Rostedt (Red Hat)
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19a7fe2062 |
tracing: Add trace_seq_has_overflowed() and trace_handle_return()
Adding a trace_seq_has_overflowed() which returns true if the trace_seq had too much written into it allows us to simplify the code. Instead of checking the return value of every call to trace_seq_printf() and friends, they can all be called normally, and at the end we can return !trace_seq_has_overflowed() instead. Several functions also return TRACE_TYPE_PARTIAL_LINE when the trace_seq overflowed and TRACE_TYPE_HANDLED otherwise. Another helper function was created called trace_handle_return() which takes a trace_seq and returns these enums. Using this helper function also simplifies the code. This change also makes it possible to remove the return values of trace_seq_printf() and friends. They should instead just be void functions. Link: http://lkml.kernel.org/r/20141114011410.365183157@goodmis.org Reviewed-by: Petr Mladek <pmladek@suse.cz> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
|
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Ingo Molnar
|
e9ac5f0fa8 |
Merge branch 'sched/urgent' into sched/core, to pick up fixes before applying more changes
Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
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Dave Airlie
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b0654103f5 |
drm/tegra: Changes for v3.19-rc1
The highlights in this pull request are:
* IOMMU support: The Tegra DRM driver can now deal with discontiguous
buffers if an IOMMU exists in the system. That means it can allocate
using drm_gem_get_pages() and will map them into IOVA space via the
IOMMU API. Similarly, non-contiguous PRIME buffers can be imported
from a different driver, which allows better integration with gk20a
(nouveau) and less hacks.
* Universal planes: This is precursory work for atomic modesetting and
will allow hardware cursor support to be implemented on pre-Tegra114
where RGB cursors were not supported.
* DSI ganged-mode support: The DSI controller can now gang up with a
second DSI controller to drive high resolution DSI panels.
Besides those bigger changes there is a slew of fixes, cleanups, plugged
memory leaks and so on.
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Merge tag 'drm/tegra/for-3.19-rc1' of git://people.freedesktop.org/~tagr/linux into drm-next
drm/tegra: Changes for v3.19-rc1
The highlights in this pull request are:
* IOMMU support: The Tegra DRM driver can now deal with discontiguous
buffers if an IOMMU exists in the system. That means it can allocate
using drm_gem_get_pages() and will map them into IOVA space via the
IOMMU API. Similarly, non-contiguous PRIME buffers can be imported
from a different driver, which allows better integration with gk20a
(nouveau) and less hacks.
* Universal planes: This is precursory work for atomic modesetting and
will allow hardware cursor support to be implemented on pre-Tegra114
where RGB cursors were not supported.
* DSI ganged-mode support: The DSI controller can now gang up with a
second DSI controller to drive high resolution DSI panels.
Besides those bigger changes there is a slew of fixes, cleanups, plugged
memory leaks and so on.
* tag 'drm/tegra/for-3.19-rc1' of git://people.freedesktop.org/~tagr/linux: (44 commits)
drm/tegra: gem: Check before freeing CMA memory
drm/tegra: fb: Add error codes to error messages
drm/tegra: fb: Properly release GEM objects on failure
drm/tegra: Detach panel when a connector is removed
drm/tegra: Plug memory leak
drm/tegra: gem: Use more consistent data types
drm/tegra: fb: Do not destroy framebuffer
drm/tegra: gem: dumb: pitch and size are outputs
drm/tegra: Enable the hotplug interrupt only when necessary
drm/tegra: dc: Universal plane support
drm/tegra: dc: Registers are 32 bits wide
drm/tegra: dc: Factor out DC, window and cursor commit
drm/tegra: Add IOMMU support
drm/tegra: Fix error handling cleanup
drm/tegra: gem: Use dma_mmap_writecombine()
drm/tegra: gem: Remove redundant drm_gem_free_mmap_offset()
drm/tegra: gem: Cleanup tegra_bo_create_with_handle()
drm/tegra: gem: Extract tegra_bo_alloc_object()
drm/tegra: dsi: Set up PHY_TIMING & BTA_TIMING registers earlier
drm/tegra: dsi: Replace 1000000 by USEC_PER_SEC
...
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Thierry Reding
|
b40d02bf96 |
gpu: host1x: Use struct host1x_bo pointers in traces
Rather than cast to a u32 use the struct host1x_bo pointers directly. This avoid annoying warnings for 64-bit builds. Signed-off-by: Thierry Reding <treding@nvidia.com> |
|
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Masami Hiramatsu
|
2f35c41f58 |
module: Replace module_ref with atomic_t refcnt
Replace module_ref per-cpu complex reference counter with an atomic_t simple refcnt. This is for code simplification. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> |
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Lars-Peter Clausen
|
427d204c86 |
ASoC: Remove snd_soc_cache_sync() implementation
This function has no more non regmap user, which means we can remove the implementation of the function and associated functions and structure fields. For convenience we keep a static inline version of the function that forwards calls to regcache_sync() unconditionally. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org> |
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Ingo Molnar
|
21ee24bf5b |
Merge branch 'urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/urgent
Pull two RCU fixes from Paul E. McKenney: " - Complete the work of commit |
|
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Pranith Kumar
|
28f6569ab7 |
rcu: Remove redundant TREE_PREEMPT_RCU config option
PREEMPT_RCU and TREE_PREEMPT_RCU serve the same function after TINY_PREEMPT_RCU has been removed. This patch removes TREE_PREEMPT_RCU and uses PREEMPT_RCU config option in its place. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> |
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Paul E. McKenney
|
d7e2993396 |
rcu: Make rcu_barrier() understand about missing rcuo kthreads
Commit |
|
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Oleg Nesterov
|
8f9fbf092c |
sched: Fix the PREEMPT_ACTIVE check in __trace_sched_switch_state()
task_preempt_count() has nothing to do with the actual preempt counter, thread_info->saved_preempt_count is only valid right after switch_to(). __trace_sched_switch_state() can use preempt_count(), prev is still the current task when trace_sched_switch() is called. Signed-off-by: Oleg Nesterov <oleg@redhat.com> [ Added BUG_ON(). ] Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/20141007195108.GB28002@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Linus Torvalds
|
8264fce6de |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:
"Sorry that I missed the merge window as there is a bug found in the
last minute, and I have to fix it and wait for the code to be tested
in linux-next tree for a few days. Now the buggy patch has been
dropped entirely from my next branch. Thus I hope those changes can
still be merged in 3.18-rc2 as most of them are platform thermal
driver changes.
Specifics:
- introduce ACPI INT340X thermal drivers.
Newer laptops and tablets may have thermal sensors and other
devices with thermal control capabilities that are exposed for the
OS to use via the ACPI INT340x device objects. Several drivers are
introduced to expose the temperature information and cooling
ability from these objects to user-space via the normal thermal
framework.
From: Lu Aaron, Lan Tianyu, Jacob Pan and Zhang Rui.
- introduce a new thermal governor, which just uses a hysteresis to
switch abruptly on/off a cooling device. This governor can be used
to control certain fan devices that can not be throttled but just
switched on or off. From: Peter Feuerer.
- introduce support for some new thermal interrupt functions on
i.MX6SX, in IMX thermal driver. From: Anson, Huang.
- introduce tracing support on thermal framework. From: Punit
Agrawal.
- small fixes in OF thermal and thermal step_wise governor"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (25 commits)
Thermal: int340x thermal: select ACPI fan driver
Thermal: int3400_thermal: use acpi_thermal_rel parsing APIs
Thermal: int340x_thermal: expose acpi thermal relationship tables
Thermal: introduce int3403 thermal driver
Thermal: introduce INT3402 thermal driver
Thermal: move the KELVIN_TO_MILLICELSIUS macro to thermal.h
ACPI / Fan: support INT3404 thermal device
ACPI / Fan: add ACPI 4.0 style fan support
ACPI / fan: convert to platform driver
ACPI / fan: use acpi_device_xxx_power instead of acpi_bus equivelant
ACPI / fan: remove no need check for device pointer
ACPI / fan: remove unused macro
Thermal: int3400 thermal: register to thermal framework
Thermal: int3400 thermal: add capability to detect supporting UUIDs
Thermal: introduce int3400 thermal driver
ACPI: add ACPI_TYPE_LOCAL_REFERENCE support to acpi_extract_package()
ACPI: make acpi_create_platform_device() an external API
thermal: step_wise: fix: Prevent from binary overflow when trend is dropping
ACPI: introduce ACPI int340x thermal scan handler
thermal: Added Bang-bang thermal governor
...
|
|
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Linus Torvalds
|
c2661b8060 |
A large number of cleanups and bug fixes, with some (minor) journal
optimizations. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABCAAGBQJUPlLCAAoJENNvdpvBGATwpN8P/jnbDL1RqM9ZEAWfbDhvYumR Fi59b3IDzSJHuuJeP0nTblVbbWclpO9ljCd18ttsHr8gBXA0ViaEU0XvWbpHIwPN 1fr1/Ovd0wvBdIVdLlaLXTR9skH4lbkiXxv/tkfjVCOSpzqiKID98Z72e/gUjB7Z 8xjAn/mTCnXKnhqMGzi8RC2MP1wgY//ErR21bj6so/8RC8zu4P6JuVj/hI6s0y5i IPtAmjhdM7nxnS0wJwj7dLT0yNDftDh69qE6CgIwyK+Xn/SZFgYwE6+l02dj3DET ZcAzTT9ToTMJdWtMu+5Y4LY8ObJ5xqMPbMoUclQ3DWe6nZicvtcBVCjfG/J8pFlY IFD0nfh/OpX9cQMwJ+5Y8P4TrMiqM+FfuLfu+X83gLyrAyIazwoaZls2lxlEyC0w M25oAqeKGUeVakVlmDZlVyBf05cu5m62x1rRvpcwMXMNhJl8/xwsSdhdYGeJfbO0 0MfL1n6GmvHvouMXKNsXlat/w3QVaQWVRzqdF9x7Q730fSHC/zxVGO+Po3jz2fBd fBdfE14BIIU7nkyBVy0CZG5SDmQW4YACocOv/ATmII9j76F9eZQ3zsA8J1x+dLmJ dP1Uxvsn1C3HW8Ua239j0XUJncglb06iEId0ywdkmWcc1rbzsyZ/NzXN/QBdZmqB 9g4GKAXAyh15PeBTJ5K/ =vWic -----END PGP SIGNATURE----- Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 updates from Ted Ts'o: "A large number of cleanups and bug fixes, with some (minor) journal optimizations" [ This got sent to me before -rc1, but was stuck in my spam folder. - Linus ] * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (67 commits) ext4: check s_chksum_driver when looking for bg csum presence ext4: move error report out of atomic context in ext4_init_block_bitmap() ext4: Replace open coded mdata csum feature to helper function ext4: delete useless comments about ext4_move_extents ext4: fix reservation overflow in ext4_da_write_begin ext4: add ext4_iget_normal() which is to be used for dir tree lookups ext4: don't orphan or truncate the boot loader inode ext4: grab missed write_count for EXT4_IOC_SWAP_BOOT ext4: optimize block allocation on grow indepth ext4: get rid of code duplication ext4: fix over-defensive complaint after journal abort ext4: fix return value of ext4_do_update_inode ext4: fix mmap data corruption when blocksize < pagesize vfs: fix data corruption when blocksize < pagesize for mmaped data ext4: fold ext4_nojournal_sops into ext4_sops ext4: support freezing ext2 (nojournal) file systems ext4: fold ext4_sync_fs_nojournal() into ext4_sync_fs() ext4: don't check quota format when there are no quota files jbd2: simplify calling convention around __jbd2_journal_clean_checkpoint_list jbd2: avoid pointless scanning of checkpoint lists ... |
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Linus Torvalds
|
d6dd50e07c |
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar: "The main changes in this cycle were: - changes related to No-CBs CPUs and NO_HZ_FULL - RCU-tasks implementation - torture-test updates - miscellaneous fixes - locktorture updates - RCU documentation updates" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (81 commits) workqueue: Use cond_resched_rcu_qs macro workqueue: Add quiescent state between work items locktorture: Cleanup header usage locktorture: Cannot hold read and write lock locktorture: Fix __acquire annotation for spinlock irq locktorture: Support rwlocks rcu: Eliminate deadlock between CPU hotplug and expedited grace periods locktorture: Document boot/module parameters rcutorture: Rename rcutorture_runnable parameter locktorture: Add test scenario for rwsem_lock locktorture: Add test scenario for mutex_lock locktorture: Make torture scripting account for new _runnable name locktorture: Introduce torture context locktorture: Support rwsems locktorture: Add infrastructure for torturing read locks torture: Address race in module cleanup locktorture: Make statistics generic locktorture: Teach about lock debugging locktorture: Support mutexes locktorture: Add documentation ... |
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Linus Torvalds
|
ef4a48c513 |
File locking related changes for v3.18 (pile #1)
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Merge tag 'locks-v3.18-1' of git://git.samba.org/jlayton/linux
Pull file locking related changes from Jeff Layton:
"This release is a little more busy for file locking changes than the
last:
- a set of patches from Kinglong Mee to fix the lockowner handling in
knfsd
- a pile of cleanups to the internal file lease API. This should get
us a bit closer to allowing for setlease methods that can block.
There are some dependencies between mine and Bruce's trees this cycle,
and I based my tree on top of the requisite patches in Bruce's tree"
* tag 'locks-v3.18-1' of git://git.samba.org/jlayton/linux: (26 commits)
locks: fix fcntl_setlease/getlease return when !CONFIG_FILE_LOCKING
locks: flock_make_lock should return a struct file_lock (or PTR_ERR)
locks: set fl_owner for leases to filp instead of current->files
locks: give lm_break a return value
locks: __break_lease cleanup in preparation of allowing direct removal of leases
locks: remove i_have_this_lease check from __break_lease
locks: move freeing of leases outside of i_lock
locks: move i_lock acquisition into generic_*_lease handlers
locks: define a lm_setup handler for leases
locks: plumb a "priv" pointer into the setlease routines
nfsd: don't keep a pointer to the lease in nfs4_file
locks: clean up vfs_setlease kerneldoc comments
locks: generic_delete_lease doesn't need a file_lock at all
nfsd: fix potential lease memory leak in nfs4_setlease
locks: close potential race in lease_get_mtime
security: make security_file_set_fowner, f_setown and __f_setown void return
locks: consolidate "nolease" routines
locks: remove lock_may_read and lock_may_write
lockd: rip out deferred lock handling from testlock codepath
NFSD: Get reference of lockowner when coping file_lock
...
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|
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Linus Torvalds
|
90d0c376f5 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs updates from Chris Mason: "The largest set of changes here come from Miao Xie. He's cleaning up and improving read recovery/repair for raid, and has a number of related fixes. I've merged another set of fsync fixes from Filipe, and he's also improved the way we handle metadata write errors to make sure we force the FS readonly if things go wrong. Otherwise we have a collection of fixes and cleanups. Dave Sterba gets a cookie for removing the most lines (thanks Dave)" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (139 commits) btrfs: Fix compile error when CONFIG_SECURITY is not set. Btrfs: fix compiles when CONFIG_BTRFS_FS_RUN_SANITY_TESTS is off btrfs: Make btrfs handle security mount options internally to avoid losing security label. Btrfs: send, don't delay dir move if there's a new parent inode btrfs: add more superblock checks Btrfs: fix race in WAIT_SYNC ioctl Btrfs: be aware of btree inode write errors to avoid fs corruption Btrfs: remove redundant btrfs_verify_qgroup_counts declaration. btrfs: fix shadow warning on cmp Btrfs: fix compilation errors under DEBUG Btrfs: fix crash of btrfs_release_extent_buffer_page Btrfs: add missing end_page_writeback on submit_extent_page failure btrfs: Fix the wrong condition judgment about subset extent map Btrfs: fix build_backref_tree issue with multiple shared blocks Btrfs: cleanup error handling in build_backref_tree btrfs: move checks for DUMMY_ROOT into a helper btrfs: new define for the inline extent data start btrfs: kill extent_buffer_page helper btrfs: drop constant param from btrfs_release_extent_buffer_page btrfs: hide typecast to definition of BTRFS_SEND_TRANS_STUB ... |
|
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Linus Torvalds
|
a2ce35273c |
sound updates for 3.18-rc1
This time it's a relatively calm update batch, but the amount isn't
too small in the end. Here we go over some highlights:
- ALSA core
- One major change is the support of nonatomic PCM operations.
This allows the trigger and other callbacks to call schedule(),
which would be useful for mailbox type communications. Already
some drivers (Digigram ones) have been converted to use together
with threaded irqs as an example.
- Improvement / fixes of DSD PCM format support
- HD-audio
- Large volume of rewrites are found in Realtek codec driver for
converting Dell and HP quirks to generic forms.
- Inverted dmic code cleanup from David.
- Realtek COEF access has been optimized.
- Now HD-audio jack infrastructure allows multiple callbacks, which
fixes / simplifies the jack-dependent power controls on STAC/IDT
and VIA codecs.
- Many additional device-specific fixups as usual
- A few deadcode cleanups, CA0132 code cleanup, etc.
- ASoC
- More componentization work from Lars-Peter, this time mainly
cleaning up the suspend and bias level transition callbacks.
- Real system support for the Intel drivers and a bunch of fixes
and enhancements for the associated CODEC drivers, this is going
to need a lot quirks over time due to the lack of any firmware
description of the boards.
- Jack detect support for simple card from Dylan Reid.
- A bunch of small fixes and enhancements for the Freescale
drivers.
- New drivers for Analog Devices SSM4567, Cirrus Logic CS35L32,
Everest Semiconductor ES8328 and Freescale cards using the ASRC
in newer i.MX processors.
- A few simple-card fixes, mostly cleanups but also a fix for
- interaction between GPIO 0 and simple-card.
- Misc
- Virtuoso / Oxygen updates by Clemens
- USB-audio: Yamaha MOTIF XF MIDI port name fixes
- Conversion of kernel messages to standard dev_*() in ctxfi
driver.
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Merge tag 'sound-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"This time it's a relatively calm update batch, but the amount isn't
too small in the end. Here we go over some highlights:
ALSA core:
- One major change is the support of nonatomic PCM operations. This
allows the trigger and other callbacks to call schedule(), which
would be useful for mailbox type communications. Already some
drivers (Digigram ones) have been converted to use together with
threaded irqs as an example.
- Improvement / fixes of DSD PCM format support
HD-audio:
- Large volume of rewrites are found in Realtek codec driver for
converting Dell and HP quirks to generic forms.
- Inverted dmic code cleanup from David.
- Realtek COEF access has been optimized.
- Now HD-audio jack infrastructure allows multiple callbacks, which
fixes / simplifies the jack-dependent power controls on STAC/IDT
and VIA codecs.
- Many additional device-specific fixups as usual
- A few deadcode cleanups, CA0132 code cleanup, etc.
ASoC:
- More componentization work from Lars-Peter, this time mainly
cleaning up the suspend and bias level transition callbacks.
- Real system support for the Intel drivers and a bunch of fixes and
enhancements for the associated CODEC drivers, this is going to
need a lot quirks over time due to the lack of any firmware
description of the boards.
- Jack detect support for simple card from Dylan Reid.
- A bunch of small fixes and enhancements for the Freescale drivers.
- New drivers for Analog Devices SSM4567, Cirrus Logic CS35L32,
Everest Semiconductor ES8328 and Freescale cards using the ASRC in
newer i.MX processors.
- A few simple-card fixes, mostly cleanups but also a fix for
interaction between GPIO 0 and simple-card.
Misc:
- Virtuoso / Oxygen updates by Clemens
- USB-audio: Yamaha MOTIF XF MIDI port name fixes
- Conversion of kernel messages to standard dev_*() in ctxfi driver"
* tag 'sound-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (251 commits)
ASoC: mc13783: Ensure we only try to dereference valid of_nodes
ASoC: rockchip-i2s: fix infinite loop in rockchip_snd_txctrl
ALSA: hda - Add dock port support to Thinkpad L440 (71aa:501e)
ALSA: Allow pass NULL dev for snd_pci_quirk_lookup()
ASoC: imx-es8328: Fix of_node_put() call with uninitialized object
ASoC: soc-pcm: fix sig_bits determination in soc_pcm_apply_msb()
ASoC: simple-card: Initialize headphone and mic GPIO numbers
ASoC: imx-es8328: Fix missing return code in imx_es8328_probe()
ALSA: hda - Add dock support for Thinkpad T440 (17aa:2212)
ALSA: usb: caiaq: check for cdev->n_streams > 1
ASoC: 88pm860x-codec: Fix possibly missing string termination
ASoC: core: fix use after free in snd_soc_remove_platform()
ASoC: soc-dapm: fix use after free
ALSA: hda - Make the inv dmic handling for Realtek use generic parser
ALSA: hda - Add Inverted Internal mic for Samsung Ativ book 9 (NP900X3G)
ALSA: hda - Add inverted internal mic for Asus Aspire 4830T
ASoC: Intel: byt-rt5640: fix coccinelle warnings
ASoC: fsl_esai doc: Add "fsl,vf610-esai" as compatible string
ASoC: da732x: Remove unnecessary KERN_ERR in pr_err()
ASoC: simple-card: Fix detect gpio documentation.
...
|
|
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Linus Torvalds
|
da01e61428 |
Merge tag 'f2fs-for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim: "This patch-set introduces a couple of new features such as large sector size, FITRIM, and atomic/volatile writes. Several patches enhance power-off recovery and checkpoint routines. The fsck.f2fs starts to support fixing corrupted partitions with recovery hints provided by this patch-set. Summary: - retain some recovery information for fsck.f2fs - enhance checkpoint speed - enhance flush command management - bug fix for lseek - tune in-place-update policies - enhance roll-forward speed - revisit all the roll-forward and fsync rules - support larget sector size - support FITRIM - support atomic and volatile writes And several clean-ups and bug fixes are included" * tag 'f2fs-for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (42 commits) f2fs: support volatile operations for transient data f2fs: support atomic writes f2fs: remove unused return value f2fs: clean up f2fs_ioctl functions f2fs: potential shift wrapping buf in f2fs_trim_fs() f2fs: call f2fs_unlock_op after error was handled f2fs: check the use of macros on block counts and addresses f2fs: refactor flush_nat_entries to remove costly reorganizing ops f2fs: introduce FITRIM in f2fs_ioctl f2fs: introduce cp_control structure f2fs: use more free segments until SSR is activated f2fs: change the ipu_policy option to enable combinations f2fs: fix to search whole dirty segmap when get_victim f2fs: fix to clean previous mount option when remount_fs f2fs: skip punching hole in special condition f2fs: support large sector size f2fs: fix to truncate blocks past EOF in ->setattr f2fs: update i_size when __allocate_data_block f2fs: use MAX_BIO_BLOCKS(sbi) f2fs: remove redundant operation during roll-forward recovery ... |
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Linus Torvalds
|
e4e65676f2 |
Fixes and features for 3.18.
Apart from the usual cleanups, here is the summary of new features:
- s390 moves closer towards host large page support
- PowerPC has improved support for debugging (both inside the guest and
via gdbstub) and support for e6500 processors
- ARM/ARM64 support read-only memory (which is necessary to put firmware
in emulated NOR flash)
- x86 has the usual emulator fixes and nested virtualization improvements
(including improved Windows support on Intel and Jailhouse hypervisor
support on AMD), adaptive PLE which helps overcommitting of huge guests.
Also included are some patches that make KVM more friendly to memory
hot-unplug, and fixes for rare caching bugs.
Two patches have trivial mm/ parts that were acked by Rik and Andrew.
Note: I will soon switch to a subkey for signing purposes. To verify
future signed pull requests from me, please update my key with
"gpg --recv-keys 9B4D86F2". You should see 3 new subkeys---the
one for signing will be a 2048-bit RSA key, 4E6B09D7.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Paolo Bonzini:
"Fixes and features for 3.18.
Apart from the usual cleanups, here is the summary of new features:
- s390 moves closer towards host large page support
- PowerPC has improved support for debugging (both inside the guest
and via gdbstub) and support for e6500 processors
- ARM/ARM64 support read-only memory (which is necessary to put
firmware in emulated NOR flash)
- x86 has the usual emulator fixes and nested virtualization
improvements (including improved Windows support on Intel and
Jailhouse hypervisor support on AMD), adaptive PLE which helps
overcommitting of huge guests. Also included are some patches that
make KVM more friendly to memory hot-unplug, and fixes for rare
caching bugs.
Two patches have trivial mm/ parts that were acked by Rik and Andrew.
Note: I will soon switch to a subkey for signing purposes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (157 commits)
kvm: do not handle APIC access page if in-kernel irqchip is not in use
KVM: s390: count vcpu wakeups in stat.halt_wakeup
KVM: s390/facilities: allow TOD-CLOCK steering facility bit
KVM: PPC: BOOK3S: HV: CMA: Reserve cma region only in hypervisor mode
arm/arm64: KVM: Report correct FSC for unsupported fault types
arm/arm64: KVM: Fix VTTBR_BADDR_MASK and pgd alloc
kvm: Fix kvm_get_page_retry_io __gup retval check
arm/arm64: KVM: Fix set_clear_sgi_pend_reg offset
kvm: x86: Unpin and remove kvm_arch->apic_access_page
kvm: vmx: Implement set_apic_access_page_addr
kvm: x86: Add request bit to reload APIC access page address
kvm: Add arch specific mmu notifier for page invalidation
kvm: Rename make_all_cpus_request() to kvm_make_all_cpus_request() and make it non-static
kvm: Fix page ageing bugs
kvm/x86/mmu: Pass gfn and level to rmapp callback.
x86: kvm: use alternatives for VMCALL vs. VMMCALL if kernel text is read-only
kvm: x86: use macros to compute bank MSRs
KVM: x86: Remove debug assertion of non-PAE reserved bits
kvm: don't take vcpu mutex for obviously invalid vcpu ioctls
kvm: Faults which trigger IO release the mmap_sem
...
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|
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Jeff Layton
|
0efaa7e82f |
locks: generic_delete_lease doesn't need a file_lock at all
Ensure that it's OK to pass in a NULL file_lock double pointer on a F_UNLCK request and convert the vfs_setlease F_UNLCK callers to do just that. Finally, turn the BUG_ON in generic_setlease into a WARN_ON_ONCE with an error return. That's a problem we can handle without crashing the box if it occurs. Signed-off-by: Jeff Layton <jlayton@primarydata.com> Reviewed-by: Christoph Hellwig <hch@lst.de> |
|
|
Mark Brown
|
97c53e26f0 | Merge remote-tracking branch 'asoc/topic/core' into asoc-next | |
|
Jaegeuk Kim
|
4b2fecc846 |
f2fs: introduce FITRIM in f2fs_ioctl
This patch introduces FITRIM in f2fs_ioctl. In this case, f2fs will issue small discards and prefree discards as many as possible for the given area. Reviewed-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
|
|
Jaegeuk Kim
|
75ab4cb830 |
f2fs: introduce cp_control structure
This patch add a new data structure to control checkpoint parameters. Currently, it presents the reason of checkpoint such as is_umount and normal sync. Reviewed-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
|
|
Anatol Pomozov
|
e03f73a01f |
ASoC: trace: Remove trailing new-lines in trace messages
These new-lines add empty lines to trace output Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org> |
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Andres Lagar-Cavilla
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8a9522d2fe |
kvm/x86/mmu: Pass gfn and level to rmapp callback.
Callbacks don't have to do extra computation to learn what the caller (lvm_handle_hva_range()) knows very well. Useful for debugging/tracing/printk/future. Signed-off-by: Andres Lagar-Cavilla <andreslc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Ingo Molnar
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6273143359 |
Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull the v3.18 RCU changes from Paul E. McKenney:
"
* Update RCU documentation. These were posted to LKML at
https://lkml.org/lkml/2014/8/28/378.
* Miscellaneous fixes. These were posted to LKML at
https://lkml.org/lkml/2014/8/28/386. An additional fix that
eliminates a documented (but now inconvenient) deadlock between
RCU hotplug and expedited grace periods was posted at
https://lkml.org/lkml/2014/8/28/573.
* Changes related to No-CBs CPUs and NO_HZ_FULL. These were posted
to LKML at https://lkml.org/lkml/2014/8/28/412.
* Torture-test updates. These were posted to LKML at
https://lkml.org/lkml/2014/8/28/546 and at
https://lkml.org/lkml/2014/9/11/1114.
* RCU-tasks implementation. These were posted to LKML at
https://lkml.org/lkml/2014/8/28/540.
"
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Liu Bo
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254a2d14fa |
Btrfs: fix wrong parse of extent map's tracepoint
The tracepoint of extent map doesn't parse @flag correctly, we set @flag via set_bit(), so we need to parse it on a bit bias. Also add the missing flag, EXTENT_FLAG_FS_MAPPING. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <clm@fb.com> |
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Liu Bo
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b7831b20f3 |
Btrfs: show real function name in btrfs workqueue tracepoint
Use %pf instead of %p, just same as kernel workqueue tracepoints. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Reviewed-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com> |
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Liu Bo
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1a76e4ba5b |
Btrfs: cleanup for btrfs workqueue tracepoints
Tracepoint trace_btrfs_normal_work_done never has an user, just cleanup it. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <clm@fb.com> |
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Liu Bo
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b38a62586f |
Btrfs: add work_struct information for workqueue tracepoint
Kernel workqueue's tracepoints print the address of work_struct, while btrfs workqueue's tracepoints print the address of btrfs_work. We need a connection between this two, for example when debuging, we usually grep an address in the trace output. So it'd be better to also print work_struct in btrfs workqueue's tracepoint. Please note that we can only add this into those tracepoints whose work is still available in memory because we need to reference the work. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <clm@fb.com> |
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Mark Fasheh
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d3982100ba |
btrfs: add trace for qgroup accounting
We want this to debug qgroup changes on live systems. Signed-off-by: Mark Fasheh <mfasheh@suse.de> Reviewed-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Chris Mason <clm@fb.com> |
|
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Zhang Haoyu
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184564efae |
kvm: ioapic: conditionally delay irq delivery duringeoi broadcast
Currently, we call ioapic_service() immediately when we find the irq is still active during eoi broadcast. But for real hardware, there's some delay between the EOI writing and irq delivery. If we do not emulate this behavior, and re-inject the interrupt immediately after the guest sends an EOI and re-enables interrupts, a guest might spend all its time in the ISR if it has a broken handler for a level-triggered interrupt. Such livelock actually happens with Windows guests when resuming from hibernation. As there's no way to recognize the broken handle from new raised ones, this patch delays an interrupt if 10.000 consecutive EOIs found that the interrupt was still high. The guest can then make a little forward progress, until a proper IRQ handler is set or until some detection routine in the guest (such as Linux's note_interrupt()) recognizes the situation. Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Zhang Haoyu <zhanghy@sangfor.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Paul E. McKenney
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9fdd3bc900 |
rcu: Break more call_rcu() deadlock involving scheduler and perf
Commit
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Masanari Iida
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e793c0f70e |
net: treewide: Fix typo found in DocBook/networking.xml
This patch fix spelling typo found in DocBook/networking.xml. It is because the neworking.xml is generated from comments in the source, I have to fix typo in comments within the source. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Zheng Liu
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eb68d0e2fc |
ext4: track extent status tree shrinker delay statictics
This commit adds some statictics in extent status tree shrinker. The
purpose to add these is that we want to collect more details when we
encounter a stall caused by extent status tree shrinker. Here we count
the following statictics:
stats:
the number of all objects on all extent status trees
the number of reclaimable objects on lru list
cache hits/misses
the last sorted interval
the number of inodes on lru list
average:
scan time for shrinking some objects
the number of shrunk objects
maximum:
the inode that has max nr. of objects on lru list
the maximum scan time for shrinking some objects
The output looks like below:
$ cat /proc/fs/ext4/sda1/es_shrinker_info
stats:
28228 objects
6341 reclaimable objects
5281/631 cache hits/misses
586 ms last sorted interval
250 inodes on lru list
average:
153 us scan time
128 shrunk objects
maximum:
255 inode (255 objects, 198 reclaimable)
125723 us max scan time
If the lru list has never been sorted, the following line will not be
printed:
586ms last sorted interval
If there is an empty lru list, the following lines also will not be
printed:
250 inodes on lru list
...
maximum:
255 inode (255 objects, 198 reclaimable)
0 us max scan time
Meanwhile in this commit a new trace point is defined to print some
details in __ext4_es_shrink().
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Jan Kara <jack@suse.cz>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Zheng Liu
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e963bb1de4 |
ext4: improve extents status tree trace point
This commit improves the trace point of extents status tree. We rename trace_ext4_es_shrink_enter in ext4_es_count() because it is also used in ext4_es_scan() and we can not identify them from the result. Further this commit fixes a variable name in trace point in order to keep consistency with others. Cc: Andreas Dilger <adilger.kernel@dilger.ca> Cc: Jan Kara <jack@suse.cz> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Zheng Liu <wenqing.lz@taobao.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> |
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Zhang Rui
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62ebb7b166 | Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal into eduardo-soc | |
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Linus Torvalds
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1d508f8ace |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull more powerpc updates from Ben Herrenschmidt: "Here are some more powerpc bits for 3.17, essentially fixes. The biggest series, also aimed at -stable, is from Aneesh and is the result of weeks and weeks of debugging to find out why the heck or THP implementation was occasionally triggering multi-hit errors in our level 1 TLB. It ended up being a combination of issues including subtleties as to how we should invalidate those special 'MPSS' pages we use to allow the use of 16M pages inside 4K/64K "base page size" segments (you really have to love our MMU !) Another interesting one in the "OMG" category is the series from Michael adding memory barriers to spin_is_locked(). That's also the result of many days of debugging to figure out why the semaphore code would occasionally crash in ways that made no sense. It ended up being some creative lock stacking that was defeated by the fact that our locks allow a load inside the locked section to be re-ordered with the load of the lock value itself (I'm still of two mind about whether to kill that once and for all by putting a heavier barrier back into our lock implementation...). The fixes come with a long explanation in the cset comments, feel free to read it if you feel like having a headache today" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (25 commits) powerpc/thp: Add tracepoints to track hugepage invalidate powerpc/mm: Use read barrier when creating real_pte powerpc/thp: Use ACCESS_ONCE when loading pmdp powerpc/thp: Invalidate with vpn in loop powerpc/thp: Handle combo pages in invalidate powerpc/thp: Invalidate old 64K based hash page mapping before insert of 4k pte powerpc/thp: Don't recompute vsid and ssize in loop on invalidate powerpc/thp: Add write barrier after updating the valid bit powerpc: reorder per-cpu NUMA information's initialization powerpc/perf/hv-24x7: Use kmem_cache_free powerpc/pseries/hvcserver: Fix endian issue in hvcs_get_partner_info powerpc: Hard disable interrupts in xmon powerpc: remove duplicate definition of TEXASR_FS powerpc/pseries: Avoid deadlock on removing ddw powerpc/pseries: Failure on removing device node powerpc/boot: Use correct zlib types for comparison powerpc/powernv: Interface to register/unregister opal dump region printk: Add function to return log buffer address and size powerpc: Add POWER8 features to CPU_FTRS_POSSIBLE/ALWAYS powerpc/ppc476: Disable BTAC ... |
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Linus Torvalds
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d429a3639c |
Merge branch 'for-3.17/drivers' of git://git.kernel.dk/linux-block
Pull block driver changes from Jens Axboe:
"Nothing out of the ordinary here, this pull request contains:
- A big round of fixes for bcache from Kent Overstreet, Slava Pestov,
and Surbhi Palande. No new features, just a lot of fixes.
- The usual round of drbd updates from Andreas Gruenbacher, Lars
Ellenberg, and Philipp Reisner.
- virtio_blk was converted to blk-mq back in 3.13, but now Ming Lei
has taken it one step further and added support for actually using
more than one queue.
- Addition of an explicit SG_FLAG_Q_AT_HEAD for block/bsg, to
compliment the the default behavior of adding to the tail of the
queue. From Douglas Gilbert"
* 'for-3.17/drivers' of git://git.kernel.dk/linux-block: (86 commits)
bcache: Drop unneeded blk_sync_queue() calls
bcache: add mutex lock for bch_is_open
bcache: Correct printing of btree_gc_max_duration_ms
bcache: try to set b->parent properly
bcache: fix memory corruption in init error path
bcache: fix crash with incomplete cache set
bcache: Fix more early shutdown bugs
bcache: fix use-after-free in btree_gc_coalesce()
bcache: Fix an infinite loop in journal replay
bcache: fix crash in bcache_btree_node_alloc_fail tracepoint
bcache: bcache_write tracepoint was crashing
bcache: fix typo in bch_bkey_equal_header
bcache: Allocate bounce buffers with GFP_NOWAIT
bcache: Make sure to pass GFP_WAIT to mempool_alloc()
bcache: fix uninterruptible sleep in writeback thread
bcache: wait for buckets when allocating new btree root
bcache: fix crash on shutdown in passthrough mode
bcache: fix lockdep warnings on shutdown
bcache allocator: send discards with correct size
bcache: Fix to remove the rcu_sched stalls.
...
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Aneesh Kumar K.V
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9e813308a5 |
powerpc/thp: Add tracepoints to track hugepage invalidate
Add tracepoint to track hugepage invalidate. This help us in debugging difficult to track bugs. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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Linus Torvalds
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c23190c0bf |
Nicolas Pitre added generic tracepoints for tracing IPIs and updated the
arm and arm64 architectures. It required some minor updates to the generic tracepoint system, so it had to wait for me to implement them. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJT5N6DAAoJEKQekfcNnQGuv60H/2NXDO/kUtvdF0L7ewaGbDaO sjGOXMHDDgF4fQixPsIYNHdra0iGSPL59NBjIaLsESFsB8SUOVqXSclV0MSiZJQc 1PgTduE19p2kEMsqw6F4l8Ir8hPrUT8V8pQScR9lUkww3ANpyTB6Bbg1rZHcmTYA yAq20q85rfQrAGwbvvhg40UYF8/su0FMUAbt/a180kVL8yeQI2liAkNOJTMCVq35 PpL7if4dlqAhKMqne71ae080PIPOH34q2lmZX3/SbpRvT2tSkS4dkoSFtCAD4pvx c2TKNOxEDDWlinN/305PXH2yQ87MTIm44SBaTu/WPllUSQoO//EKI7+13tNS8Qc= =/VeP -----END PGP SIGNATURE----- Merge tag 'trace-ipi-tracepoints' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull IPI tracepoints for ARM from Steven Rostedt: "Nicolas Pitre added generic tracepoints for tracing IPIs and updated the arm and arm64 architectures. It required some minor updates to the generic tracepoint system, so it had to wait for me to implement them" * tag 'trace-ipi-tracepoints' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ARM64: add IPI tracepoints ARM: add IPI tracepoints tracepoint: add generic tracepoint definitions for IPI tracing tracing: Do not do anything special with tracepoint_string when tracing is disabled |
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Nicolas Pitre
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f6d9804d14 |
tracepoint: add generic tracepoint definitions for IPI tracing
The Inter Processor Interrupt is used to make another processor do a specific action such as rescheduling tasks, signal a timer event or execute something in another CPU's context. IRQs are already traceable but IPIs were not. Tracing them is useful for monitoring IPI latency, or to verify when they are the source of CPU wake-ups with power management implications. Three trace hooks are defined: ipi_raise, ipi_entry and ipi_exit. To make them portable, a string is used to identify them and correlate related events. Additionally, ipi_raise records a bitmask representing targeted CPUs. Link: http://lkml.kernel.org/p/1406318733-26754-3-git-send-email-nicolas.pitre@linaro.org Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
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Linus Torvalds
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66bb0aa077 |
Here are the PPC and ARM changes for KVM, which I separated because
they had small conflicts (respectively within KVM documentation, and with 3.16-rc changes). Since they were all within the subsystem, I took care of them. Stephen Rothwell reported some snags in PPC builds, but they are all fixed now; the latest linux-next report was clean. New features for ARM include: - KVM VGIC v2 emulation on GICv3 hardware - Big-Endian support for arm/arm64 (guest and host) - Debug Architecture support for arm64 (arm32 is on Christoffer's todo list) And for PPC: - Book3S: Good number of LE host fixes, enable HV on LE - Book3S HV: Add in-guest debug support This release drops support for KVM on the PPC440. As a result, the PPC merge removes more lines than it adds. :) I also included an x86 change, since Davidlohr tied it to an independent bug report and the reporter quickly provided a Tested-by; there was no reason to wait for -rc2. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABAgAGBQJT4iIJAAoJEBvWZb6bTYbyZqoP/3Wxy8NWPFJ8HGt81NHlGnDS a9UbL7EibcOEG+aaKqmtBglTD5YDiGBDNCxxiSJaDHt+grLN4fsWIliJob1nJFoO 90f89EWN2XjeCrJXA5nUoeg5tpc5OoYKsiP6pTgzIwkP8vvs/H1+zpcTS/UmYsr/ qipVMMsM+zZeHWZcSbqjW88z7YqIn1sr5282wJ85cbyv4KGizb/G4dyPuDqLb6np hkAD8Ah6VV2suQ2FSy7G2fg20R0vglUi60hkEHLoCBPVqJCl7SmC8MvxNbjBnP8S J36R0R0u1wHYKzAGooLJGVOZ/o/gSiVqKX+++L2EvJBN+kuA6u/7fxLyBT+LwDAE IF/Aln5rpg1fe+eywvhz86WljTVEQ8bO1zVsIQUPY+/ZOPedZHMwyvXft8ogbjSp 2m9OJ/3e8Aggh0OeHpCDoeow+QDUXvX0YdCw+2Yh0p+7VMXqkyp0QEiBu38jrusC rB3VNifJbDSWLKdG9LfCAPHnxZD2XYEwv2WFBo6KQOGMGHfx0GXpCOL/jQihrhA6 HtEG5Bs3lvnHQemdpUZ58xojiABbMaUPdcnPXQQEp23WhZzrfLMLzqVG0VYnhSsC 9pi7MJj8c31rqx5WU2oRM28i/BvNxN0NCtkDpineO5s3f89Ws1xnwxqlm38AKP0J irJQTYFEqec+GM9JK1rG =hyQP -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull second round of KVM changes from Paolo Bonzini: "Here are the PPC and ARM changes for KVM, which I separated because they had small conflicts (respectively within KVM documentation, and with 3.16-rc changes). Since they were all within the subsystem, I took care of them. Stephen Rothwell reported some snags in PPC builds, but they are all fixed now; the latest linux-next report was clean. New features for ARM include: - KVM VGIC v2 emulation on GICv3 hardware - Big-Endian support for arm/arm64 (guest and host) - Debug Architecture support for arm64 (arm32 is on Christoffer's todo list) And for PPC: - Book3S: Good number of LE host fixes, enable HV on LE - Book3S HV: Add in-guest debug support This release drops support for KVM on the PPC440. As a result, the PPC merge removes more lines than it adds. :) I also included an x86 change, since Davidlohr tied it to an independent bug report and the reporter quickly provided a Tested-by; there was no reason to wait for -rc2" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (122 commits) KVM: Move more code under CONFIG_HAVE_KVM_IRQFD KVM: nVMX: fix "acknowledge interrupt on exit" when APICv is in use KVM: nVMX: Fix nested vmexit ack intr before load vmcs01 KVM: PPC: Enable IRQFD support for the XICS interrupt controller KVM: Give IRQFD its own separate enabling Kconfig option KVM: Move irq notifier implementation into eventfd.c KVM: Move all accesses to kvm::irq_routing into irqchip.c KVM: irqchip: Provide and use accessors for irq routing table KVM: Don't keep reference to irq routing table in irqfd struct KVM: PPC: drop duplicate tracepoint arm64: KVM: fix 64bit CP15 VM access for 32bit guests KVM: arm64: GICv3: mandate page-aligned GICV region arm64: KVM: GICv3: move system register access to msr_s/mrs_s KVM: PPC: PR: Handle FSCR feature deselects KVM: PPC: HV: Remove generic instruction emulation KVM: PPC: BOOKEHV: rename e500hv_spr to bookehv_spr KVM: PPC: Remove DCR handling KVM: PPC: Expose helper functions for data/inst faults KVM: PPC: Separate loadstore emulation from priv emulation KVM: PPC: Handle magic page in kvmppc_ld/st ... |
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Linus Torvalds
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33caee3992 |
Merge branch 'akpm' (patchbomb from Andrew Morton)
Merge incoming from Andrew Morton: - Various misc things. - arch/sh updates. - Part of ocfs2. Review is slow. - Slab updates. - Most of -mm. - printk updates. - lib/ updates. - checkpatch updates. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (226 commits) checkpatch: update $declaration_macros, add uninitialized_var checkpatch: warn on missing spaces in broken up quoted checkpatch: fix false positives for --strict "space after cast" test checkpatch: fix false positive MISSING_BREAK warnings with --file checkpatch: add test for native c90 types in unusual order checkpatch: add signed generic types checkpatch: add short int to c variable types checkpatch: add for_each tests to indentation and brace tests checkpatch: fix brace style misuses of else and while checkpatch: add --fix option for a couple OPEN_BRACE misuses checkpatch: use the correct indentation for which() checkpatch: add fix_insert_line and fix_delete_line helpers checkpatch: add ability to insert and delete lines to patch/file checkpatch: add an index variable for fixed lines checkpatch: warn on break after goto or return with same tab indentation checkpatch: emit a warning on file add/move/delete checkpatch: add test for commit id formatting style in commit log checkpatch: emit fewer kmalloc_array/kcalloc conversion warnings checkpatch: improve "no space after cast" test checkpatch: allow multiple const * types ... |
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Linus Torvalds
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930e0312bc |
sound updates for 3.17-rc1
There've been many updates in ASoC side at this time, especially the
framework enhancement for multiple CODECs on a single DAI and more
componentization works. The only major change in ALSA core is the
addition of timestamp type in sw_params field. This should behave in
backward compatible way. Other than that, there are lots of small
changes and new drivers in wide range, including a large code cut in
HD-audio driver for deprecated static quirks. Some highlights are
below:
ALSA Core:
- Add the new timestamp type field to sw_params to choose
MONOTONIC_RAW type
HD-audio:
- Continued conversion to standard printk macros, generic code
cleanups
- Removal of obsoleted static quirk codes for Conexant and C-Media
codecs
- Fixups for HP Envy TS, Dell XPS 15, HP and Dell mute/mic LED,
Gigabyte BXBT-2807 mobo
- Intel Braswell support
ASoC:
- Support for multiple CODECs attached to a single DAI, enabling
systems with for example multiple DAC/speaker drivers on a single
link, contributed by Benoit Cousson based on work from Misael Lopez
Cruz
- Support for byte controls larger than 256 bytes based on the use of
TLVs contributed by Omair Mohammed Abdullah
- More componentisation work from Lars-Peter Clausen
- The remainder of the conversions of CODEC drivers to params_width()
by Mark Brown
- Drivers for Cirrus Logic CS4265, Freescale i.MX ASRC blocks, Realtek
RT286 and RT5670, Rockchip RK3xxx I2S controllers and Texas
Instruments TAS2552
- Lots of updates and fixes, especially to the DaVinci, Intel,
Freescale, Realtek, and rcar drivers
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Merge tag 'sound-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"There've been many updates in ASoC side at this time, especially the
framework enhancement for multiple CODECs on a single DAI and more
componentization works.
The only major change in ALSA core is the addition of timestamp type
in sw_params field. This should behave in backward compatible way.
Other than that, there are lots of small changes and new drivers in
wide range, including a large code cut in HD-audio driver for
deprecated static quirks. Some highlights are below:
ALSA Core:
- Add the new timestamp type field to sw_params to choose
MONOTONIC_RAW type
HD-audio:
- Continued conversion to standard printk macros, generic code
cleanups
- Removal of obsoleted static quirk codes for Conexant and C-Media
codecs
- Fixups for HP Envy TS, Dell XPS 15, HP and Dell mute/mic LED,
Gigabyte BXBT-2807 mobo
- Intel Braswell support
ASoC:
- Support for multiple CODECs attached to a single DAI, enabling
systems with for example multiple DAC/speaker drivers on a single
link, contributed by Benoit Cousson based on work from Misael Lopez
Cruz
- Support for byte controls larger than 256 bytes based on the use of
TLVs contributed by Omair Mohammed Abdullah
- More componentisation work from Lars-Peter Clausen
- The remainder of the conversions of CODEC drivers to params_width()
by Mark Brown
- Drivers for Cirrus Logic CS4265, Freescale i.MX ASRC blocks,
Realtek RT286 and RT5670, Rockchip RK3xxx I2S controllers and Texas
Instruments TAS2552
- Lots of updates and fixes, especially to the DaVinci, Intel,
Freescale, Realtek, and rcar drivers"
* tag 'sound-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (402 commits)
ALSA: usb-audio: Whitespace cleanups for sound/usb/midi.*
ALSA: usb-audio: Respond to suspend and resume callbacks for MIDI input
sound/oss/pss: Remove typedefs pss_mixerdata and pss_confdata
sound/oss/opl3: Remove typedef opl_devinfo
ALSA: fireworks: fix specifiers in format strings for propper output
ASoC: imx-audmux: Use uintptr_t for port numbers
ASoC: davinci: Enable menuconfig entry for McASP
ASoC: fsl_asrc: Don't access members of config before checking it
ASoC: fsl_sarc_dma: Check pair before using it
ASoC: adau1977: Fix truncation warning on 64 bit architectures
ALSA: virtuoso: add Xonar Essence STX II support
ALSA: riptide: fix %d confusingly prefixed with 0x in format strings
ALSA: fireworks: fix %d confusingly prefixed with 0x in format strings
ALSA: hda - add codec ID for Braswell display audio codec
ALSA: hda - add PCI IDs for Intel Braswell
ALSA: usb-audio: Adjust Gamecom 780 volume level
ALSA: usb-audio: improve dmesg source grepability
ASoC: rt5670: Fix duplicate const warnings
ASoC: rt5670: Staticise non-exported symbols
ASoC: Intel: update stream only on stream IPC msgs
...
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Mel Gorman
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24b7e5819a |
mm: pagemap: avoid unnecessary overhead when tracepoints are deactivated
This was formerly the series "Improve sequential read throughput" which
noted some major differences in performance of tiobench since 3.0.
While there are a number of factors, two that dominated were the
introduction of the fair zone allocation policy and changes to CFQ.
The behaviour of fair zone allocation policy makes more sense than
tiobench as a benchmark and CFQ defaults were not changed due to
insufficient benchmarking.
This series is what's left. It's one functional fix to the fair zone
allocation policy when used on NUMA machines and a reduction of overhead
in general. tiobench was used for the comparison despite its flaws as
an IO benchmark as in this case we are primarily interested in the
overhead of page allocator and page reclaim activity.
On UMA, it makes little difference to overhead
3.16.0-rc3 3.16.0-rc3
vanilla lowercost-v5
User 383.61 386.77
System 403.83 401.74
Elapsed 5411.50 5413.11
On a 4-socket NUMA machine it's a bit more noticable
3.16.0-rc3 3.16.0-rc3
vanilla lowercost-v5
User 746.94 802.00
System 65336.22 40852.33
Elapsed 27553.52 27368.46
This patch (of 6):
The LRU insertion and activate tracepoints take PFN as a parameter
forcing the overhead to the caller. Move the overhead to the tracepoint
fast-assign method to ensure the cost is only incurred when the
tracepoint is active.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Max Asbock
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4a262d2658 |
mm tracing: tell mm_migrate_pages event about numa_misplaced
The mm_migrate_pages trace event reports a reason for the migration, typically as a symbolic string. The exception is the reason MR_NUMA_MISPLACED for which it just displays the numeric value: mm_migrate_pages: nr_succeeded=1 nr_failed=0 mode=MIGRATE_ASYNC reason=0x5 This patch makes the output consistent by introducing a string value for MR_NUMA_MISPLACED. The event is then reported as: mm_migrate_pages: nr_succeeded=1 nr_failed=0 mode=MIGRATE_ASYNC reason=numa_misplaced Signed-off-by: Max Asbock <masbock@linux.vnet.ibm.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@redhat.com> Acked-by: Mel Gorman <mgorman@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Paolo Bonzini
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c77dcacb39 |
KVM: Move more code under CONFIG_HAVE_KVM_IRQFD
Commits |
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Linus Torvalds
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b54ecfb702 |
Merge tag 'for-f2fs-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim: "This series includes patches to: - add nobarrier mount option - support tmpfile and rename2 - enhance the fdatasync behavior - fix the error path - fix the recovery routine - refactor a part of the checkpoint procedure - reduce some lock contentions" * tag 'for-f2fs-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (40 commits) f2fs: use for_each_set_bit to simplify the code f2fs: add f2fs_balance_fs for expand_inode_data f2fs: invalidate xattr node page when evict inode f2fs: avoid skipping recover_inline_xattr after recover_inline_data f2fs: add tracepoint for f2fs_direct_IO f2fs: reduce competition among node page writes f2fs: fix coding style f2fs: remove redundant lines in allocate_data_block f2fs: add tracepoint for f2fs_issue_flush f2fs: avoid retrying wrong recovery routine when error was occurred f2fs: test before set/clear bits f2fs: fix wrong condition for unlikely f2fs: enable in-place-update for fdatasync f2fs: skip unnecessary data writes during fsync f2fs: add info of appended or updated data writes f2fs: use radix_tree for ino management f2fs: add infra for ino management f2fs: punch the core function for inode management f2fs: add nobarrier mount option f2fs: fix to put root inode in error path of fill_super ... |
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Linus Torvalds
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29b88e23a9 |
Driver core patches for 3.17-rc1
Here's the big driver-core pull request for 3.17-rc1. Largest thing in here is the dma-buf rework and fence code, that touched many different subsystems so it was agreed it should go through this tree to handle merge issues. There's also some firmware loading updates, as well as tests added, and a few other tiny changes, the changelog has the details. All have been in linux-next for a long time. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEABECAAYFAlPf1XcACgkQMUfUDdst+ylREACdHLXBa02yLrRzbrONJ+nARuFv JuQAoMN49PD8K9iMQpXqKBvZBsu+iCIY =w8OJ -----END PGP SIGNATURE----- Merge tag 'driver-core-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here's the big driver-core pull request for 3.17-rc1. Largest thing in here is the dma-buf rework and fence code, that touched many different subsystems so it was agreed it should go through this tree to handle merge issues. There's also some firmware loading updates, as well as tests added, and a few other tiny changes, the changelog has the details. All have been in linux-next for a long time" * tag 'driver-core-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (32 commits) ARM: imx: Remove references to platform_bus in mxc code firmware loader: Fix _request_firmware_load() return val for fw load abort platform: Remove most references to platform_bus device test: add firmware_class loader test doc: fix minor typos in firmware_class README staging: android: Cleanup style issues Documentation: devres: Sort managed interfaces Documentation: devres: Add devm_kmalloc() et al fs: debugfs: remove trailing whitespace kernfs: kernel-doc warning fix debugfs: Fix corrupted loop in debugfs_remove_recursive stable_kernel_rules: Add pointer to netdev-FAQ for network patches driver core: platform: add device binding path 'driver_override' driver core/platform: remove unused implicit padding in platform_object firmware loader: inform direct failure when udev loader is disabled firmware: replace ALIGN(PAGE_SIZE) by PAGE_ALIGN firmware: read firmware size using i_size_read() firmware loader: allow disabling of udev as firmware loader reservation: add suppport for read-only access using rcu reservation: update api and add some helpers ... Conflicts: drivers/base/platform.c |
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Linus Torvalds
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d782cebd6b |
Merge branch 'x86-ras-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS updates from Ingo Molnar:
"The main changes in this cycle are:
- RAS tracing/events infrastructure, by Gong Chen.
- Various generalizations of the APEI code to make it available to
non-x86 architectures, by Tomasz Nowicki"
* 'x86-ras-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/ras: Fix build warnings in <linux/aer.h>
acpi, apei, ghes: Factor out ioremap virtual memory for IRQ and NMI context.
acpi, apei, ghes: Make NMI error notification to be GHES architecture extension.
apei, mce: Factor out APEI architecture specific MCE calls.
RAS, extlog: Adjust init flow
trace, eMCA: Add a knob to adjust where to save event log
trace, RAS: Add eMCA trace event interface
RAS, debugfs: Add debugfs interface for RAS subsystem
CPER: Adjust code flow of some functions
x86, MCE: Robustify mcheck_init_device
trace, AER: Move trace into unified interface
trace, RAS: Add basic RAS trace event
x86, MCE: Kill CPU_POST_DEAD
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Linus Torvalds
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ce47479632 |
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm changes from Ingo Molnar: "The main change in this cycle is the rework of the TLB range flushing code, to simplify, fix and consolidate the code. By Dave Hansen" * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Set TLB flush tunable to sane value (33) x86/mm: New tunable for single vs full TLB flush x86/mm: Add tracepoints for TLB flushes x86/mm: Unify remote INVLPG code x86/mm: Fix missed global TLB flush stat x86/mm: Rip out complicated, out-of-date, buggy TLB flushing x86/mm: Clean up the TLB flushing code x86/smep: Be more informative when signalling an SMEP fault |
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Slava Pestov
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913dc33fb2 |
bcache: fix crash in bcache_btree_node_alloc_fail tracepoint
'b' was NULL. Change-Id: Icac0fd04afa2d23f213d96d51afd53374e6dd0c0 |
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Slava Pestov
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60ae81eee8 |
bcache: bcache_write tracepoint was crashing
Signed-off-by: Kent Overstreet <kmo@daterainc.com> |
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Mark Brown
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a1cb98ac8b | Merge remote-tracking branch 'asoc/topic/component' into asoc-next | |
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Chao Yu
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70407fad85 |
f2fs: add tracepoint for f2fs_direct_IO
This patch adds a tracepoint for f2fs_direct_IO. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
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Dave Hansen
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d17d8f9ded |
x86/mm: Add tracepoints for TLB flushes
We don't have any good way to figure out what kinds of flushes are being attempted. Right now, we can try to use the vm counters, but those only tell us what we actually did with the hardware (one-by-one vs full) and don't tell us what was actually _requested_. This allows us to select out "interesting" TLB flushes that we might want to optimize (like the ranged ones) and ignore the ones that we have very little control over (the ones at context switch). Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Link: http://lkml.kernel.org/r/20140731154059.4C96CBA5@viggo.jf.intel.com Acked-by: Rik van Riel <riel@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> |
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Jaegeuk Kim
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24a9ee0fa3 |
f2fs: add tracepoint for f2fs_issue_flush
This patch adds a tracepoint for f2fs_issue_flush. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
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Punit Agrawal
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208cd822a1 |
thermal: trace: Trace when temperature is above a trip point
Create a new event to trace when the temperature is above a trip point. Use the trace-point when handling non-critical and critical trip pionts. Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> |
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Punit Agrawal
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39811569e4 |
thermal: trace: Trace when a cooling device's state is updated
Introduce and use an event to trace when a cooling device's state is updated. This is useful to follow the effect of governor decisions on cooling devices. Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> |
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Punit Agrawal
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100a8fdbf5 |
thermal: trace: Trace temperature changes
Create a new event to trace the temperature of a thermal zone. Using this event trace the temperature changes of the thermal zone every-time it is updated. Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> |
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Maarten Lankhorst
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e941759c74 |
fence: dma-buf cross-device synchronization (v18)
A fence can be attached to a buffer which is being filled or consumed
by hw, to allow userspace to pass the buffer without waiting to another
device. For example, userspace can call page_flip ioctl to display the
next frame of graphics after kicking the GPU but while the GPU is still
rendering. The display device sharing the buffer with the GPU would
attach a callback to get notified when the GPU's rendering-complete IRQ
fires, to update the scan-out address of the display, without having to
wake up userspace.
A driver must allocate a fence context for each execution ring that can
run in parallel. The function for this takes an argument with how many
contexts to allocate:
+ fence_context_alloc()
A fence is transient, one-shot deal. It is allocated and attached
to one or more dma-buf's. When the one that attached it is done, with
the pending operation, it can signal the fence:
+ fence_signal()
To have a rough approximation whether a fence is fired, call:
+ fence_is_signaled()
The dma-buf-mgr handles tracking, and waiting on, the fences associated
with a dma-buf.
The one pending on the fence can add an async callback:
+ fence_add_callback()
The callback can optionally be cancelled with:
+ fence_remove_callback()
To wait synchronously, optionally with a timeout:
+ fence_wait()
+ fence_wait_timeout()
When emitting a fence, call:
+ trace_fence_emit()
To annotate that a fence is blocking on another fence, call:
+ trace_fence_annotate_wait_on(fence, on_fence)
A default software-only implementation is provided, which can be used
by drivers attaching a fence to a buffer when they have no other means
for hw sync. But a memory backed fence is also envisioned, because it
is common that GPU's can write to, or poll on some memory location for
synchronization. For example:
fence = custom_get_fence(...);
if ((seqno_fence = to_seqno_fence(fence)) != NULL) {
dma_buf *fence_buf = seqno_fence->sync_buf;
get_dma_buf(fence_buf);
... tell the hw the memory location to wait ...
custom_wait_on(fence_buf, seqno_fence->seqno_ofs, fence->seqno);
} else {
/* fall-back to sw sync * /
fence_add_callback(fence, my_cb);
}
On SoC platforms, if some other hw mechanism is provided for synchronizing
between IP blocks, it could be supported as an alternate implementation
with it's own fence ops in a similar way.
enable_signaling callback is used to provide sw signaling in case a cpu
waiter is requested or no compatible hardware signaling could be used.
The intention is to provide a userspace interface (presumably via eventfd)
later, to be used in conjunction with dma-buf's mmap support for sw access
to buffers (or for userspace apps that would prefer to do their own
synchronization).
v1: Original
v2: After discussion w/ danvet and mlankhorst on #dri-devel, we decided
that dma-fence didn't need to care about the sw->hw signaling path
(it can be handled same as sw->sw case), and therefore the fence->ops
can be simplified and more handled in the core. So remove the signal,
add_callback, cancel_callback, and wait ops, and replace with a simple
enable_signaling() op which can be used to inform a fence supporting
hw->hw signaling that one or more devices which do not support hw
signaling are waiting (and therefore it should enable an irq or do
whatever is necessary in order that the CPU is notified when the
fence is passed).
v3: Fix locking fail in attach_fence() and get_fence()
v4: Remove tie-in w/ dma-buf.. after discussion w/ danvet and mlankorst
we decided that we need to be able to attach one fence to N dma-buf's,
so using the list_head in dma-fence struct would be problematic.
v5: [ Maarten Lankhorst ] Updated for dma-bikeshed-fence and dma-buf-manager.
v6: [ Maarten Lankhorst ] I removed dma_fence_cancel_callback and some comments
about checking if fence fired or not. This is broken by design.
waitqueue_active during destruction is now fatal, since the signaller
should be holding a reference in enable_signalling until it signalled
the fence. Pass the original dma_fence_cb along, and call __remove_wait
in the dma_fence_callback handler, so that no cleanup needs to be
performed.
v7: [ Maarten Lankhorst ] Set cb->func and only enable sw signaling if
fence wasn't signaled yet, for example for hardware fences that may
choose to signal blindly.
v8: [ Maarten Lankhorst ] Tons of tiny fixes, moved __dma_fence_init to
header and fixed include mess. dma-fence.h now includes dma-buf.h
All members are now initialized, so kmalloc can be used for
allocating a dma-fence. More documentation added.
v9: Change compiler bitfields to flags, change return type of
enable_signaling to bool. Rework dma_fence_wait. Added
dma_fence_is_signaled and dma_fence_wait_timeout.
s/dma// and change exports to non GPL. Added fence_is_signaled and
fence_enable_sw_signaling calls, add ability to override default
wait operation.
v10: remove event_queue, use a custom list, export try_to_wake_up from
scheduler. Remove fence lock and use a global spinlock instead,
this should hopefully remove all the locking headaches I was having
on trying to implement this. enable_signaling is called with this
lock held.
v11:
Use atomic ops for flags, lifting the need for some spin_lock_irqsaves.
However I kept the guarantee that after fence_signal returns, it is
guaranteed that enable_signaling has either been called to completion,
or will not be called any more.
Add contexts and seqno to base fence implementation. This allows you
to wait for less fences, by testing for seqno + signaled, and then only
wait on the later fence.
Add FENCE_TRACE, FENCE_WARN, and FENCE_ERR. This makes debugging easier.
An CONFIG_DEBUG_FENCE will be added to turn off the FENCE_TRACE
spam, and another runtime option can turn it off at runtime.
v12:
Add CONFIG_FENCE_TRACE. Add missing documentation for the fence->context
and fence->seqno members.
v13:
Fixup CONFIG_FENCE_TRACE kconfig description.
Move fence_context_alloc to fence.
Simplify fence_later.
Kill priv member to fence_cb.
v14:
Remove priv argument from fence_add_callback, oops!
v15:
Remove priv from documentation.
Explicitly include linux/atomic.h.
v16:
Add trace events.
Import changes required by android syncpoints.
v17:
Use wake_up_state instead of try_to_wake_up. (Colin Cross)
Fix up commit description for seqno_fence. (Rob Clark)
v18:
Rename release_fence to fence_release.
Move to drivers/dma-buf/.
Rename __fence_is_signaled and __fence_signal to *_locked.
Rename __fence_init to fence_init.
Make fence_default_wait return a signed long, and fix wait ops too.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com> #use smp_mb__before_atomic()
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Chen, Gong
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0a2409aad3 |
trace, AER: Move trace into unified interface
AER uses a separate trace interface by now. To make it consistent, move it into unified RAS trace interface. Signed-off-by: Chen, Gong <gong.chen@linux.intel.com> Acked-by: Borislav Petkov <bp@suse.de> Signed-off-by: Tony Luck <tony.luck@intel.com> |
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Lars-Peter Clausen
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f4333203ec |
ASoC: Move name and id from CODEC/platform to component
The component struct already has a name and id field which are initialized to the same values as the same fields in the CODEC and platform structs. So remove them from the CODEC and platform structs and used the ones from the component struct instead. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@linaro.org> |
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Steven Rostedt
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4d4c9cc839 |
tracing: Add __field_struct macro for TRACE_EVENT()
Currently the __field() macro in TRACE_EVENT is only good for primitive values, such as integers and pointers, but it fails on complex data types such as structures or unions. This is because the __field() macro determines if the variable is signed or not with the test of: (((type)(-1)) < (type)1) Unfortunately, that fails when type is a structure. Since trace events should support structures as fields a new macro is created for such a case called __field_struct() which acts exactly the same as __field() does but it does not do the signed type check and just uses a constant false for that answer. Cc: Tony Luck <tony.luck@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
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Oleg Nesterov
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4af4206be2 |
tracing: Fix syscall_*regfunc() vs copy_process() race
syscall_regfunc() and syscall_unregfunc() should set/clear
TIF_SYSCALL_TRACEPOINT system-wide, but do_each_thread() can race
with copy_process() and miss the new child which was not added to
the process/thread lists yet.
Change copy_process() to update the child's TIF_SYSCALL_TRACEPOINT
under tasklist.
Link: http://lkml.kernel.org/p/20140413185854.GB20668@redhat.com
Cc: stable@vger.kernel.org # 2.6.33
Fixes:
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Linus Torvalds
|
b2e09f633a |
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull more scheduler updates from Ingo Molnar:
"Second round of scheduler changes:
- try-to-wakeup and IPI reduction speedups, from Andy Lutomirski
- continued power scheduling cleanups and refactorings, from Nicolas
Pitre
- misc fixes and enhancements"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/deadline: Delete extraneous extern for to_ratio()
sched/idle: Optimize try-to-wake-up IPI
sched/idle: Simplify wake_up_idle_cpu()
sched/idle: Clear polling before descheduling the idle thread
sched, trace: Add a tracepoint for IPI-less remote wakeups
cpuidle: Set polling in poll_idle
sched: Remove redundant assignment to "rt_rq" in update_curr_rt(...)
sched: Rename capacity related flags
sched: Final power vs. capacity cleanups
sched: Remove remaining dubious usage of "power"
sched: Let 'struct sched_group_power' care about CPU capacity
sched/fair: Disambiguate existing/remaining "capacity" usage
sched/fair: Change "has_capacity" to "has_free_capacity"
sched/fair: Remove "power" from 'struct numa_stats'
sched: Fix signedness bug in yield_to()
sched/fair: Use time_after() in record_wakee()
sched/balancing: Reduce the rate of needless idle load balancing
sched/fair: Fix unlocked reads of some cfs_b->quota/period
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Linus Torvalds
|
19c1940fea |
More ACPI and power management updates for 3.16-rc1
- I didn't remember correctly that the Hans de Goede's ACPI video
patches actually didn't flip the video.use_native_backlight
default, although we had discussed that and decided to do that.
Since I said we would do that in the previous PM+ACPI pull
request, make that change for real now.
- ACPI bus check notifications for PCI host bridges don't cause
the bus below the host bridge to be checked for changes as they
should because of a mistake in the ACPI-based PCI hotplug (ACPIPHP)
subsystem that forgets to add hotplug contexts to PCI host bridge
ACPI device objects. Create hotplug contexts for PCI host bridges
too as appropriate.
- Revert recent cpufreq commit related to the big.LITTLE cpufreq
driver that breaks arm64 builds.
- Fix for a regression in the ppc-corenet cpufreq driver introduced
during the 3.15 cycle and causing the driver to use the remainder
from do_div instead of the quotient. From Ed Swarthout.
- Resets triggered by panic activate a BUG_ON() in vmalloc.c on
systems where the ACPI reset register is located in memory address
space. Fix from Randy Wright.
- Fix for a problem with cpufreq governors that decisions made by
them may be suboptimal due to the fact that deferrable timers are
used by them for CPU load sampling. From Srivatsa S Bhat.
- Fix for a problem with the Tegra cpufreq driver where the CPU
frequency is temporarily switched to a "stable" level that
is different from both the initial and target frequencies
during transitions which causes udelay() to expire earlier than
it should sometimes. From Viresh Kumar.
- New trace points and rework of some existing trace points for
system suspend/resume profiling from Todd Brandt.
- Assorted cpufreq fixes and cleanups from Stratos Karafotis and
Viresh Kumar.
- Copyright notice update for suspend-and-cpuhotplug.txt from
Srivatsa S Bhat.
/
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Merge tag 'pm+acpi-3.16-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI and power management updates from Rafael Wysocki:
"These are fixups on top of the previous PM+ACPI pull request,
regression fixes (ACPI hotplug, cpufreq ppc-corenet), other bug fixes
(ACPI reset, cpufreq), new PM trace points for system suspend
profiling and a copyright notice update.
Specifics:
- I didn't remember correctly that the Hans de Goede's ACPI video
patches actually didn't flip the video.use_native_backlight
default, although we had discussed that and decided to do that.
Since I said we would do that in the previous PM+ACPI pull request,
make that change for real now.
- ACPI bus check notifications for PCI host bridges don't cause the
bus below the host bridge to be checked for changes as they should
because of a mistake in the ACPI-based PCI hotplug (ACPIPHP)
subsystem that forgets to add hotplug contexts to PCI host bridge
ACPI device objects. Create hotplug contexts for PCI host bridges
too as appropriate.
- Revert recent cpufreq commit related to the big.LITTLE cpufreq
driver that breaks arm64 builds.
- Fix for a regression in the ppc-corenet cpufreq driver introduced
during the 3.15 cycle and causing the driver to use the remainder
from do_div instead of the quotient. From Ed Swarthout.
- Resets triggered by panic activate a BUG_ON() in vmalloc.c on
systems where the ACPI reset register is located in memory address
space. Fix from Randy Wright.
- Fix for a problem with cpufreq governors that decisions made by
them may be suboptimal due to the fact that deferrable timers are
used by them for CPU load sampling. From Srivatsa S Bhat.
- Fix for a problem with the Tegra cpufreq driver where the CPU
frequency is temporarily switched to a "stable" level that is
different from both the initial and target frequencies during
transitions which causes udelay() to expire earlier than it should
sometimes. From Viresh Kumar.
- New trace points and rework of some existing trace points for
system suspend/resume profiling from Todd Brandt.
- Assorted cpufreq fixes and cleanups from Stratos Karafotis and
Viresh Kumar.
- Copyright notice update for suspend-and-cpuhotplug.txt from
Srivatsa S Bhat"
* tag 'pm+acpi-3.16-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / hotplug / PCI: Add hotplug contexts to PCI host bridges
PM / sleep: trace events for device PM callbacks
cpufreq: cpufreq-cpu0: remove dependency on THERMAL and REGULATOR
cpufreq: tegra: update comment for clarity
cpufreq: intel_pstate: Remove duplicate CPU ID check
cpufreq: Mark CPU0 driver with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag
PM / Documentation: Update copyright in suspend-and-cpuhotplug.txt
cpufreq: governor: remove copy_prev_load from 'struct cpu_dbs_common_info'
cpufreq: governor: Be friendly towards latency-sensitive bursty workloads
PM / sleep: trace events for suspend/resume
cpufreq: ppc-corenet-cpu-freq: do_div use quotient
Revert "cpufreq: Enable big.LITTLE cpufreq driver on arm64"
cpufreq: Tegra: implement intermediate frequency callbacks
cpufreq: add support for intermediate (stable) frequencies
ACPI / video: Change the default for video.use_native_backlight to 1
ACPI: Fix bug when ACPI reset register is implemented in system memory
|
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Rafael J. Wysocki
|
d715a226b0 |
Merge branch 'pm-sleep'
* pm-sleep: PM / sleep: trace events for device PM callbacks PM / sleep: trace events for suspend/resume |
|
|
Todd E Brandt
|
e8bca479c3 |
PM / sleep: trace events for device PM callbacks
Adds two trace events which supply the same info that initcall_debug provides, but via ftrace instead of dmesg. The existing initcall_debug calls require the pm_print_times_enabled var to be set (either via sysfs or via the kernel cmd line). The new trace events provide all the same info as the initcall_debug prints but with less overhead, and also with coverage of device prepare and complete device callbacks. These events replace the device_pm_report_time event (which has been removed). device_pm_callback_start is called first and provides the device and callback info. device_pm_callback_end is called after with the device name and error info. The time and pid are gathered from the trace data headers. Signed-off-by: Todd Brandt <todd.e.brandt@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Linus Torvalds
|
64b2d1fbbf |
f2fs updates for v3.16
This patch-set includes the following major enhancement patches.
o enhance wait_on_page_writeback
o support SEEK_DATA and SEEK_HOLE
o enhance readahead flows
o enhance IO flushes
o support fiemap
o add some tracepoints
The other bug fixes are as follows.
o fix to support a large volume > 2TB correctly
o recovery bug fix wrt fallocated space
o fix recursive lock on xattr operations
o fix some cases on the remount flow
And, there are a bunch of cleanups.
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Merge tag 'for-f2fs-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this round, there is no special interesting feature, but we've
investigated a couple of tuning points with respect to the I/O flow.
Several major bug fixes and a bunch of clean-ups also have been made.
This patch-set includes the following major enhancement patches:
- enhance wait_on_page_writeback
- support SEEK_DATA and SEEK_HOLE
- enhance readahead flows
- enhance IO flushes
- support fiemap
- add some tracepoints
The other bug fixes are as follows:
- fix to support a large volume > 2TB correctly
- recovery bug fix wrt fallocated space
- fix recursive lock on xattr operations
- fix some cases on the remount flow
And, there are a bunch of cleanups"
* tag 'for-f2fs-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (52 commits)
f2fs: support f2fs_fiemap
f2fs: avoid not to call remove_dirty_inode
f2fs: recover fallocated space
f2fs: fix to recover data written by dio
f2fs: large volume support
f2fs: avoid crash when trace f2fs_submit_page_mbio event in ra_sum_pages
f2fs: avoid overflow when large directory feathure is enabled
f2fs: fix recursive lock by f2fs_setxattr
MAINTAINERS: add a co-maintainer from samsung for F2FS
MAINTAINERS: change the email address for f2fs
f2fs: use inode_init_owner() to simplify codes
f2fs: avoid to use slab memory in f2fs_issue_flush for efficiency
f2fs: add a tracepoint for f2fs_read_data_page
f2fs: add a tracepoint for f2fs_write_{meta,node,data}_pages
f2fs: add a tracepoint for f2fs_write_{meta,node,data}_page
f2fs: add a tracepoint for f2fs_write_end
f2fs: add a tracepoint for f2fs_write_begin
f2fs: fix checkpatch warning
f2fs: deactivate inode page if the inode is evicted
f2fs: decrease the lock granularity during write_begin
...
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Linus Torvalds
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214b931320 |
Lots of tweaks, small fixes, optimizations, and some helper functions
to help out the rest of the kernel to ease their use of trace events. The big change for this release is the allowing of other tracers, such as the latency tracers, to be used in the trace instances and allow for function or function graph tracing to be in the top level simultaneously. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJTlbUqAAoJEKQekfcNnQGuP+8H+wTBG06beHsqe6XcaeXcKNkt Mimm0O04oQdw89CBWeJvXyOwRTtiN4M/4hxHXBTDtChxM9oUyWw1o0IpSMMuQ16O w9r3DfC8e1air+ufEuYWM0QNtyzHi8EfDSNia55ON5jvtkCZTXOEKZD+n8M9w28p I7PVgr0PDztsCpethCpg0M8beK9zuQPWMzsHAQCsKI06Xl5z33kPIJR15Exh+Kr1 uVVTZW7JFVAPuSnteLSIx9pN6OjsVGzOZCljg+O+9/v/02u5nkMiS2nURxae86kg RTSiRYT6Hvl/MCBhdss/w5kgSk6BYiZ0hXbLtwetvre+vQrOR5CnDw2DxZ7e+gU= =oudH -----END PGP SIGNATURE----- Merge tag 'trace-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: "Lots of tweaks, small fixes, optimizations, and some helper functions to help out the rest of the kernel to ease their use of trace events. The big change for this release is the allowing of other tracers, such as the latency tracers, to be used in the trace instances and allow for function or function graph tracing to be in the top level simultaneously" * tag 'trace-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (44 commits) tracing: Fix memory leak on instance deletion tracing: Fix leak of ring buffer data when new instances creation fails tracing/kprobes: Avoid self tests if tracing is disabled on boot up tracing: Return error if ftrace_trace_arrays list is empty tracing: Only calculate stats of tracepoint benchmarks for 2^32 times tracing: Convert stddev into u64 in tracepoint benchmark tracing: Introduce saved_cmdlines_size file tracing: Add __get_dynamic_array_len() macro for trace events tracing: Remove unused variable in trace_benchmark tracing: Eliminate double free on failure of allocation on boot up ftrace/x86: Call text_ip_addr() instead of the duplicated code tracing: Print max callstack on stacktrace bug tracing: Move locking of trace_cmdline_lock into start/stop seq calls tracing: Try again for saved cmdline if failed due to locking tracing: Have saved_cmdlines use the seq_read infrastructure tracing: Add tracepoint benchmark tracepoint tracing: Print nasty banner when trace_printk() is in use tracing: Add funcgraph_tail option to print function name after closing braces tracing: Eliminate duplicate TRACE_GRAPH_PRINT_xx defines tracing: Add __bitmask() macro to trace events to cpumasks and other bitmasks ... |
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Linus Torvalds
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f8409abdc5 |
Clean ups and miscellaneous bug fixes, in particular for the new
collapse_range and zero_range fallocate functions. In addition,
improve the scalability of adding and remove inodes from the orphan
list.
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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"Clean ups and miscellaneous bug fixes, in particular for the new
collapse_range and zero_range fallocate functions. In addition,
improve the scalability of adding and remove inodes from the orphan
list"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (25 commits)
ext4: handle symlink properly with inline_data
ext4: fix wrong assert in ext4_mb_normalize_request()
ext4: fix zeroing of page during writeback
ext4: remove unused local variable "stored" from ext4_readdir(...)
ext4: fix ZERO_RANGE test failure in data journalling
ext4: reduce contention on s_orphan_lock
ext4: use sbi in ext4_orphan_{add|del}()
ext4: use EXT_MAX_BLOCKS in ext4_es_can_be_merged()
ext4: add missing BUFFER_TRACE before ext4_journal_get_write_access
ext4: remove unnecessary double parentheses
ext4: do not destroy ext4_groupinfo_caches if ext4_mb_init() fails
ext4: make local functions static
ext4: fix block bitmap validation when bigalloc, ^flex_bg
ext4: fix block bitmap initialization under sparse_super2
ext4: find the group descriptors on a 1k-block bigalloc,meta_bg filesystem
ext4: avoid unneeded lookup when xattr name is invalid
ext4: fix data integrity sync in ordered mode
ext4: remove obsoleted check
ext4: add a new spinlock i_raw_lock to protect the ext4's raw inode
ext4: fix locking for O_APPEND writes
...
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Todd E Brandt
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bb3632c610 |
PM / sleep: trace events for suspend/resume
Adds trace events that give finer resolution into suspend/resume. These events are graphed in the timelines generated by the analyze_suspend.py script. They represent large areas of time consumed that are typical to suspend and resume. The event is triggered by calling the function "trace_suspend_resume" with three arguments: a string (the name of the event to be displayed in the timeline), an integer (case specific number, such as the power state or cpu number), and a boolean (where true is used to denote the start of the timeline event, and false to denote the end). The suspend_resume trace event reproduces the data that the machine_suspend trace event did, so the latter has been removed. Signed-off-by: Todd Brandt <todd.e.brandt@intel.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Andy Lutomirski
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dfc68f29ae |
sched, trace: Add a tracepoint for IPI-less remote wakeups
Remote wakeups of polling CPUs are a valuable performance improvement; add a tracepoint to make it much easier to verify that they're working. Signed-off-by: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: nicolas.pitre@linaro.org Cc: daniel.lezcano@linaro.org Cc: umgwanakikbuti@gmail.com Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-kernel@vger.kernel.org Link: http://lkml.kernel.org/r/16205aee116772aa686814f9b13bccb562108047.1401902905.git.luto@amacapital.net Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Vlastimil Babka
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f8c9301fa5 |
mm/compaction: do not count migratepages when unnecessary
During compaction, update_nr_listpages() has been used to count remaining non-migrated and free pages after a call to migrage_pages(). The freepages counting has become unneccessary, and it turns out that migratepages counting is also unnecessary in most cases. The only situation when it's needed to count cc->migratepages is when migrate_pages() returns with a negative error code. Otherwise, the non-negative return value is the number of pages that were not migrated, which is exactly the count of remaining pages in the cc->migratepages list. Furthermore, any non-zero count is only interesting for the tracepoint of mm_compaction_migratepages events, because after that all remaining unmigrated pages are put back and their count is set to 0. This patch therefore removes update_nr_listpages() completely, and changes the tracepoint definition so that the manual counting is done only when the tracepoint is enabled, and only when migrate_pages() returns a negative error code. Furthermore, migrate_pages() and the tracepoints won't be called when there's nothing to migrate. This potentially avoids some wasted cycles and reduces the volume of uninteresting mm_compaction_migratepages events where "nr_migrated=0 nr_failed=0". In the stress-highalloc mmtest, this was about 75% of the events. The mm_compaction_isolate_migratepages event is better for determining that nothing was isolated for migration, and this one was just duplicating the info. Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Cc: Christoph Lameter <cl@linux.com> Cc: Rik van Riel <riel@redhat.com> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Dave Hansen
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df9024a8c5 |
mm: shrinker: add nid to tracepoint output
Now that we are doing NUMA-aware shrinking, and can have shrinkers running in parallel, or working on individual nodes, it seems like we should also be sticking the node in the output. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Dave Chinner <david@fromorbit.com> Cc: Konstantin Khlebnikov <khlebnikov@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Dave Hansen
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7fe7047597 |
mm: shrinker trace points: fix negatives
I was looking at a trace of the slab shrinkers (attachment in this comment): https://bugs.freedesktop.org/show_bug.cgi?id=72742#c67 and noticed that "total_scan" can go negative in some cases. We used to dump out the "total_scan" variable directly, but some of the shrinker modifications along the way changed that. This patch just dumps it out directly, again. It doesn't make any sense to derive it from new_nr and nr any more since there are now other shrinkers that can be running in parallel and mucking with those values. Here's an example of the negative numbers in the output: > kswapd0-840 [000] 160.869398: mm_shrink_slab_end: i915_gem_inactive_scan+0x0 0xffff8800037cbc68: unused scan count 10 new scan count 39 total_scan 29 last shrinker return val 256 > kswapd0-840 [000] 160.869618: mm_shrink_slab_end: i915_gem_inactive_scan+0x0 0xffff8800037cbc68: unused scan count 39 new scan count 102 total_scan 63 last shrinker return val 256 > kswapd0-840 [000] 160.870031: mm_shrink_slab_end: i915_gem_inactive_scan+0x0 0xffff8800037cbc68: unused scan count 102 new scan count 47 total_scan -55 last shrinker return val 768 > kswapd0-840 [000] 160.870464: mm_shrink_slab_end: i915_gem_inactive_scan+0x0 0xffff8800037cbc68: unused scan count 47 new scan count 45 total_scan -2 last shrinker return val 768 > kswapd0-840 [000] 163.384144: mm_shrink_slab_end: i915_gem_inactive_scan+0x0 0xffff8800037cbc68: unused scan count 45 new scan count 56 total_scan 11 last shrinker return val 0 > kswapd0-840 [000] 163.384297: mm_shrink_slab_end: i915_gem_inactive_scan+0x0 0xffff8800037cbc68: unused scan count 56 new scan count 15 total_scan -41 last shrinker return val 256 > kswapd0-840 [000] 163.384414: mm_shrink_slab_end: i915_gem_inactive_scan+0x0 0xffff8800037cbc68: unused scan count 15 new scan count 117 total_scan 102 last shrinker return val 0 > kswapd0-840 [000] 163.384657: mm_shrink_slab_end: i915_gem_inactive_scan+0x0 0xffff8800037cbc68: unused scan count 117 new scan count 36 total_scan -81 last shrinker return val 512 > kswapd0-840 [000] 163.384880: mm_shrink_slab_end: i915_gem_inactive_scan+0x0 0xffff8800037cbc68: unused scan count 36 new scan count 111 total_scan 75 last shrinker return val 256 > kswapd0-840 [000] 163.385256: mm_shrink_slab_end: i915_gem_inactive_scan+0x0 0xffff8800037cbc68: unused scan count 111 new scan count 34 total_scan -77 last shrinker return val 768 > kswapd0-840 [000] 163.385598: mm_shrink_slab_end: i915_gem_inactive_scan+0x0 0xffff8800037cbc68: unused scan count 34 new scan count 122 total_scan 88 last shrinker return val 512 Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Dave Chinner <david@fromorbit.com> Cc: Konstantin Khlebnikov <khlebnikov@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Vladimir Davydov
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52383431b3 |
mm: get rid of __GFP_KMEMCG
Currently to allocate a page that should be charged to kmemcg (e.g. threadinfo), we pass __GFP_KMEMCG flag to the page allocator. The page allocated is then to be freed by free_memcg_kmem_pages. Apart from looking asymmetrical, this also requires intrusion to the general allocation path. So let's introduce separate functions that will alloc/free pages charged to kmemcg. The new functions are called alloc_kmem_pages and free_kmem_pages. They should be used when the caller actually would like to use kmalloc, but has to fall back to the page allocator for the allocation is large. They only differ from alloc_pages and free_pages in that besides allocating or freeing pages they also charge them to the kmem resource counter of the current memory cgroup. [sfr@canb.auug.org.au: export kmalloc_order() to modules] Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Acked-by: Greg Thelen <gthelen@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Glauber Costa <glommer@gmail.com> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Pekka Enberg <penberg@kernel.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Steven Rostedt (Red Hat)
|
beba4bb096 |
tracing: Add __get_dynamic_array_len() macro for trace events
If a trace event uses a dynamic array for something other than a string then there's currently no way the TP_printk() can figure out what size it is. A __get_dynamic_array_len() is required to know the length. This also simplifies the __get_bitmask() macro which required it as well, but instead just hardcoded it. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
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Linus Torvalds
|
b77279bc2e |
sound updates for 3.16-rc1
At this time, majority of changes come from ASoC world while we got a
few new drivers in other places for FireWire and USB. There have been
lots of ASoC core cleanups / refactoring, but very little visible to
external users.
ASoC
- Support for specifying aux CODECs in DT
- Removal of the deprecated mux and enum macros
- More moves towards full componentisation
- Removal of some unused I/O code
- Lots of cleanups, fixes and enhancements to the davinci, Freescale,
Haswell and Realtek drivers
- Several drivers exposed directly in Kconfig for use with simple-card
- GPIO descriptor support for jacks
- More updates and fixes to the Freescale SSI, Intel and rsnd drivers
- New drivers for Cirrus CS42L56, Realtek RT5639, RT5642 and RT5651 and
ST STA350, Analog Devices ADAU1361, ADAU1381, ADAU1761 and ADAU1781,
and Realtek RT5677
HD-audio:
- Clean up Dell headset quirks
- Noise fixes for Dell and Sony laptops
- Thinkpad T440 dock fix
- Realtek codec updates (ALC293,ALC233,ALC3235)
- Tegra HD-audio HDMI support
FireWire-audio:
- FireWire audio stack enhancement (AMDTP, MIDI), support for incoming
isochronous stream and duplex streams with timestamp synchronization
- BeBoB-based devices support
- Fireworks-based device support
USB-audio:
- Behringer BCD2000 USB device support
Misc:
- Clean up of a few old drivers, atmel, fm801, etc
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Merge tag 'sound-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound into next
Pull sound updates from Takashi Iwai:
"At this time, majority of changes come from ASoC world while we got a
few new drivers in other places for FireWire and USB. There have been
lots of ASoC core cleanups / refactoring, but very little visible to
external users.
ASoC:
- Support for specifying aux CODECs in DT
- Removal of the deprecated mux and enum macros
- More moves towards full componentisation
- Removal of some unused I/O code
- Lots of cleanups, fixes and enhancements to the davinci, Freescale,
Haswell and Realtek drivers
- Several drivers exposed directly in Kconfig for use with
simple-card
- GPIO descriptor support for jacks
- More updates and fixes to the Freescale SSI, Intel and rsnd drivers
- New drivers for Cirrus CS42L56, Realtek RT5639, RT5642 and RT5651
and ST STA350, Analog Devices ADAU1361, ADAU1381, ADAU1761 and
ADAU1781, and Realtek RT5677
HD-audio:
- Clean up Dell headset quirks
- Noise fixes for Dell and Sony laptops
- Thinkpad T440 dock fix
- Realtek codec updates (ALC293,ALC233,ALC3235)
- Tegra HD-audio HDMI support
FireWire-audio:
- FireWire audio stack enhancement (AMDTP, MIDI), support for
incoming isochronous stream and duplex streams with timestamp
synchronization
- BeBoB-based devices support
- Fireworks-based device support
USB-audio:
- Behringer BCD2000 USB device support
Misc:
- Clean up of a few old drivers, atmel, fm801, etc"
* tag 'sound-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (480 commits)
ASoC: Fix wrong argument for card remove callbacks
ASoC: free jack GPIOs before the sound card is freed
ALSA: firewire-lib: Remove a comment about restriction of asynchronous operation
ASoC: cache: Fix error code when not using ASoC level cache
ALSA: hda/realtek - Fix COEF widget NID for ALC260 replacer fixup
ALSA: hda/realtek - Correction of fixup codes for PB V7900 laptop
ALSA: firewire-lib: Use IEC 61883-6 compliant labels for Raw Audio data
ASoC: add RT5677 CODEC driver
ASoC: intel: The Baytrail/MAX98090 driver depends on I2C
ASoC: rt5640: Add the function "get_clk_info" to RL6231 shared support
ASoC: rt5640: Add the function of the PLL clock calculation to RL6231 shared support
ASoC: rt5640: Add RL6231 class device shared support for RT5640, RT5645 and RT5651
ASoC: cache: Fix possible ZERO_SIZE_PTR pointer dereferencing error.
ASoC: Add helper functions to cast from DAPM context to CODEC/platform
ALSA: bebob: sizeof() vs ARRAY_SIZE() typo
ASoC: wm9713: correct mono out PGA sources
ALSA: synth: emux: soundfont.c: Cleaning up memory leak
ASoC: fsl: Remove dependencies of boards for SND_SOC_EUKREA_TLV320
ASoC: fsl-ssi: Use regmap
ASoC: fsl-ssi: reorder and document fsl_ssi_private
...
|
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Jeff Layton
|
62af4f1f7d |
locks: add some tracepoints in the lease handling code
v2: add a __break_lease tracepoint for non-blocking case Recently, I needed these to help track down a softlockup when recalling a delegation, but they might be helpful in other situations as well. Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Jeff Layton <jlayton@poochiereds.net> |
|
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Mark Brown
|
0f4019e6f4 | Merge remote-tracking branch 'asoc/topic/component' into asoc-next | |
|
Steven Rostedt (Red Hat)
|
4449bf927b |
tracing: Add __bitmask() macro to trace events to cpumasks and other bitmasks
Being able to show a cpumask of events can be useful as some events
may affect only some CPUs. There is no standard way to record the
cpumask and converting it to a string is rather expensive during
the trace as traces happen in hotpaths. It would be better to record
the raw event mask and be able to parse it at print time.
The following macros were added for use with the TRACE_EVENT() macro:
__bitmask()
__assign_bitmask()
__get_bitmask()
To test this, I added this to the sched_migrate_task event, which
looked like this:
TRACE_EVENT(sched_migrate_task,
TP_PROTO(struct task_struct *p, int dest_cpu, const struct cpumask *cpus),
TP_ARGS(p, dest_cpu, cpus),
TP_STRUCT__entry(
__array( char, comm, TASK_COMM_LEN )
__field( pid_t, pid )
__field( int, prio )
__field( int, orig_cpu )
__field( int, dest_cpu )
__bitmask( cpumask, num_possible_cpus() )
),
TP_fast_assign(
memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
__entry->pid = p->pid;
__entry->prio = p->prio;
__entry->orig_cpu = task_cpu(p);
__entry->dest_cpu = dest_cpu;
__assign_bitmask(cpumask, cpumask_bits(cpus), num_possible_cpus());
),
TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d cpumask=%s",
__entry->comm, __entry->pid, __entry->prio,
__entry->orig_cpu, __entry->dest_cpu,
__get_bitmask(cpumask))
);
With the output of:
ksmtuned-3613 [003] d..2 485.220508: sched_migrate_task: comm=ksmtuned pid=3615 prio=120 orig_cpu=3 dest_cpu=2 cpumask=00000000,0000000f
migration/1-13 [001] d..5 485.221202: sched_migrate_task: comm=ksmtuned pid=3614 prio=120 orig_cpu=1 dest_cpu=0 cpumask=00000000,0000000f
awk-3615 [002] d.H5 485.221747: sched_migrate_task: comm=rcu_preempt pid=7 prio=120 orig_cpu=0 dest_cpu=1 cpumask=00000000,000000ff
migration/2-18 [002] d..5 485.222062: sched_migrate_task: comm=ksmtuned pid=3615 prio=120 orig_cpu=2 dest_cpu=3 cpumask=00000000,0000000f
Link: http://lkml.kernel.org/r/1399377998-14870-6-git-send-email-javi.merino@arm.com
Link: http://lkml.kernel.org/r/20140506132238.22e136d1@gandalf.local.home
Suggested-by: Javi Merino <javi.merino@arm.com>
Tested-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
|
|
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Linus Torvalds
|
f322e26238 |
This contains two fixes.
The first is a long standing bug that causes bogus data to show up in the refcnt field of the module_refcnt tracepoint. It was introduced by a merge conflict resolution back in 2.6.35-rc days. The result should be refcnt = incs - decs, but instead it did refcnt = incs + decs. The second fix is to a bug that was introduced in this merge window that allowed for a tracepoint funcs pointer to be used after it was freed. Moving the location of where the probes are released solved the problem. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJTa/GQAAoJEKQekfcNnQGuGGUIAJCkrDZdnliE6f6Ur8aXJoX7 gjkXRMmCjLM/X8yQc1H8YwDbSgaTQNmeyQvBbBZ1hUQBaMf5ft4KuFYMGvQRk3jp ZheQVumSzsQfO+yp5dRmzJ6H2G0BCInxq9VZyufZkCPUGsMyiIc+7+SGHEfjMgmW 9XFWyfSr09thVlGanr+OTLXfwFm7GMD9nohLKXh9dhi/tO/gHq6lI83HK42Y1bWG 4fZWJjO5GgCVbW4RanB6yr9RIe8NESKl37JYsAZX61iAvT8/mqIYGWx0i/DEGN5Q ap3WW5QPALLUlvUVgI9Um0KOrotbmKtnRwPeHYDmSQODwuKj5veiLXxL9XdHPLU= =lt0T -----END PGP SIGNATURE----- Merge tag 'trace-fixes-v3.15-rc4-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fixes from Steven Rostedt: "This contains two fixes. The first is a long standing bug that causes bogus data to show up in the refcnt field of the module_refcnt tracepoint. It was introduced by a merge conflict resolution back in 2.6.35-rc days. The result should be 'refcnt = incs - decs', but instead it did 'refcnt = incs + decs'. The second fix is to a bug that was introduced in this merge window that allowed for a tracepoint funcs pointer to be used after it was freed. Moving the location of where the probes are released solved the problem" * tag 'trace-fixes-v3.15-rc4-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracepoint: Fix use of tracepoint funcs after rcu free trace: module: Maintain a valid user count |
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Romain Izard
|
098507ae3e |
trace: module: Maintain a valid user count
The replacement of the 'count' variable by two variables 'incs' and
'decs' to resolve some race conditions during module unloading was done
in parallel with some cleanup in the trace subsystem, and was integrated
as a merge.
Unfortunately, the formula for this replacement was wrong in the tracing
code, and the refcount in the traces was not usable as a result.
Use 'count = incs - decs' to compute the user count.
Link: http://lkml.kernel.org/p/1393924179-9147-1-git-send-email-romain.izard.pro@gmail.com
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: stable@vger.kernel.org # 2.6.35
Fixes:
|
|
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Chao Yu
|
c20e89cde6 |
f2fs: add a tracepoint for f2fs_read_data_page
This patch adds a tracepoint for f2fs_read_data_page to trace when page is readed by user. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> |
|
|
Chao Yu
|
e574843438 |
f2fs: add a tracepoint for f2fs_write_{meta,node,data}_pages
This patch adds a tracepoint for f2fs_write_{meta,node,data}_pages to trace when
pages are fsyncing/flushing.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
|
|
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Chao Yu
|
ecda0de343 |
f2fs: add a tracepoint for f2fs_write_{meta,node,data}_page
This patch adds a tracepoint for f2fs_write_{meta,node,data}_page to trace when
page is writting out.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
|
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Chao Yu
|
dfb2bf38bf |
f2fs: add a tracepoint for f2fs_write_end
This patch adds a tracepoint for f2fs_write_end to trace write op of user. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> |
|
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Chao Yu
|
62aed044ea |
f2fs: add a tracepoint for f2fs_write_begin
This patch adds a tracepoint for f2fs_write_begin to trace write op of user. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> |
|
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Mathieu Desnoyers
|
132e9a68a5 |
Fix: tracing: use 'E' instead of 'X' for unsigned module tain flag
In the following commit:
commit
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|
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Lars-Peter Clausen
|
111c0cf566 |
ASoC: Remove ASoC level IO tracing
The ASoC framework is in the process of migrating all IO operations to regmap. regmap has its own more sophisticated tracing infrastructure for IO operations, which means that the ASoC level IO tracing becomes redundant, hence this patch removes them. There are still a handful of ASoC drivers left that do not use regmap yet, but hopefully the removal of the ASoC IO tracing will be an additional incentive to switch to regmap. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@linaro.org> |
|
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Lukas Czerner
|
556615dcbf |
ext4: rename uninitialized extents to unwritten
Currently in ext4 there is quite a mess when it comes to naming unwritten extents. Sometimes we call it uninitialized and sometimes we refer to it as unwritten. The right name for the extent which has been allocated but does not contain any written data is _unwritten_. Other file systems are using this name consistently, even the buffer head state refers to it as unwritten. We need to fix this confusion in ext4. This commit changes every reference to an uninitialized extent (meaning allocated but unwritten) to unwritten extent. This includes comments, function names and variable names. It even covers abbreviation of the word uninitialized (such as uninit) and some misspellings. This commit does not change any of the code paths at all. This has been confirmed by comparing md5sums of the assembly code of each object file after all the function names were stripped from it. Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> |
|
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Lukas Czerner
|
090f32ee4e |
ext4: get rid of EXT4_MAP_UNINIT flag
Currently EXT4_MAP_UNINIT is used in dioread_nolock case to mark the cases where we're using dioread_nolock and we're writing into either unallocated, or unwritten extent, because we need to make sure that any DIO write into that inode will wait for the extent conversion. However EXT4_MAP_UNINIT is not only entirely misleading name but also unnecessary because we can check for EXT4_MAP_UNWRITTEN in the dioread_nolock case instead. This commit removes EXT4_MAP_UNINIT flag. Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> |
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Linus Torvalds
|
9ac0367501 |
These are regression and bug fixes for ext4.
We had a number of new features in ext4 during this merge window (ZERO_RANGE and COLLAPSE_RANGE fallocate modes, renameat, etc.) so there were many more regression and bug fixes this time around. It didn't help that xfstests hadn't been fully updated to fully stress test COLLAPSE_RANGE until after -rc1. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABCAAGBQJTVIEUAAoJENNvdpvBGATwnKkQANlzQv6BhgzCa0b5Iu0SkHeD OuLAtPFYE5OVEK22oWT0H76gBi71RHLboHwThd+ZfEeEPvyfs42wY0J/PV/R9dHx kwhU+MaDDzugfVj3gg29DpYNLQkL/evq0vlNbrRk5je877c2I8JbXV/aAoTVFZoH NGOsagwBqWCsgL5nSOk/nEZSRX2AzSCkgmOVxylLzFoyTUkX3vZx8G8XtS1zRgbH b1yOWIK1Ifj7tmBZ4HLpNiK6/NpHAHeHRFiaCQxY0hkLjUeMyVNJfZzXS/Fzp8DP p1/nm5z9PaFj4nyBC1Wvh9Z6Lj0zQ0ap73LV+w4fHM1SZub3XY+hvyXj/8qMNaSc lLIGwa2AZFpurbKKn6MZTi5CubVLZs6PZKzDgYURnEcJCgeMujMOxbKekcL5sP9E Gb6Hh9I/f08HagCRox5O0W7f0/TBY5bFryx5kQQZUtpcRmnY3m7cohSkn6WriwTZ zYApOZMZkFX5spSeYsfyi8K8wHij/5mXvm7qeqQ0Rj4Ehycd+7jwltOCVXAYN29+ zSKaBaxH2+V7zuGHSxjDFbOOlPotTFNzGmFh08DPTF4Vgnc9uMlLo0Oz8ADFDcT2 JZ4pAFTEREnHOATNl5bAEi8wNrU/Ln9IGhlYCYI9X5BQXjf9oPXcYwQT/lKCb07s ks8ujfry1R/gjQGuv+LH =gi42 -----END PGP SIGNATURE----- Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 fixes from Ted Ts'o: "These are regression and bug fixes for ext4. We had a number of new features in ext4 during this merge window (ZERO_RANGE and COLLAPSE_RANGE fallocate modes, renameat, etc.) so there were many more regression and bug fixes this time around. It didn't help that xfstests hadn't been fully updated to fully stress test COLLAPSE_RANGE until after -rc1" * tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (31 commits) ext4: disable COLLAPSE_RANGE for bigalloc ext4: fix COLLAPSE_RANGE failure with 1KB block size ext4: use EINVAL if not a regular file in ext4_collapse_range() ext4: enforce we are operating on a regular file in ext4_zero_range() ext4: fix extent merging in ext4_ext_shift_path_extents() ext4: discard preallocations after removing space ext4: no need to truncate pagecache twice in collapse range ext4: fix removing status extents in ext4_collapse_range() ext4: use filemap_write_and_wait_range() correctly in collapse range ext4: use truncate_pagecache() in collapse range ext4: remove temporary shim used to merge COLLAPSE_RANGE and ZERO_RANGE ext4: fix ext4_count_free_clusters() with EXT4FS_DEBUG and bigalloc enabled ext4: always check ext4_ext_find_extent result ext4: fix error handling in ext4_ext_shift_extents ext4: silence sparse check warning for function ext4_trim_extent ext4: COLLAPSE_RANGE only works on extent-based files ext4: fix byte order problems introduced by the COLLAPSE_RANGE patches ext4: use i_size_read in ext4_unaligned_aio() fs: disallow all fallocate operation on active swapfile fs: move falloc collapse range check into the filesystem methods ... |
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Theodore Ts'o
|
50e02fd845 |
ext4: remove temporary shim used to merge COLLAPSE_RANGE and ZERO_RANGE
In retrospect, this was a bad way to handle things, since it limited testing of these patches. We should just get the VFS level changes merged in first. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> |
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Linus Torvalds
|
0a7418f5f5 |
This includes the final patch to clean up and fix the issue with the
design of tracepoints and how a user could register a tracepoint and have that tracepoint not be activated but no error was shown. The design was for an out of tree module but broke in tree users. The clean up was to remove the saving of the hash table of tracepoint names such that they can be enabled before they exist (enabling a module tracepoint before that module is loaded). This added more complexity than needed. The clean up was to remove that code and just enable tracepoints that exist or fail if they do not. This removed a lot of code as well as the complexity that it brought. As a side effect, instead of registering a tracepoint by its name, the tracepoint needs to be registered with the tracepoint descriptor. This removes having to duplicate the tracepoint names that are enabled. The second patch was added that simplified the way modules were searched for. This cleanup required changes that were in the 3.15 queue as well as some changes that were added late in the 3.14-rc cycle. This final change waited till the two were merged in upstream and then the change was added and full tests were run. Unfortunately, the test found some errors, but after it was already submitted to the for-next branch and not to be rebased. Sparse errors were detected by Fengguang Wu's bot tests, and my internal tests discovered that the anonymous union initialization triggered a bug in older gcc compilers. Luckily, there was a bugzilla for the gcc bug which gave a work around to the problem. The third and fourth patch handled the sparse error and the gcc bug respectively. A final patch was tagged along to fix a missing documentation for the README file. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJTR+pwAAoJEKQekfcNnQGuvfoH/A4XZu4/1h2ZuKhzGi6lrrWr +zHUQ+JmGiAYRziQFwr2t/gqJ2vmDfHJnbDjKi6Emx8JcxesHas6CQOWps4zEic0 dwYSQjvuGNGFIFt+7I0K1OxfVVdt2PQ2lVrB5WgYdbash5J4Bi+09QBv0RbUKheo 37dKSeN3pbsuQsR70OTVP8laG3dA9IbHW7PsKnxIEB5zeIUHUBME/QdPPj/CuJwk wxZjXC2dbc3rdRlQjTVtWV3ZkGgZJB0k+JxjvZTA0N6u8Hj8LiFPuNawzf7ceBHx gc++57+WuMW0f0X/ar5/+3UPGFQKMSvKmdxIQCnWXQz5seTYYKDEx7mTH22fxgg= =OgeQ -----END PGP SIGNATURE----- Merge tag 'trace-3.15-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull more tracing updates from Steven Rostedt: "This includes the final patch to clean up and fix the issue with the design of tracepoints and how a user could register a tracepoint and have that tracepoint not be activated but no error was shown. The design was for an out of tree module but broke in tree users. The clean up was to remove the saving of the hash table of tracepoint names such that they can be enabled before they exist (enabling a module tracepoint before that module is loaded). This added more complexity than needed. The clean up was to remove that code and just enable tracepoints that exist or fail if they do not. This removed a lot of code as well as the complexity that it brought. As a side effect, instead of registering a tracepoint by its name, the tracepoint needs to be registered with the tracepoint descriptor. This removes having to duplicate the tracepoint names that are enabled. The second patch was added that simplified the way modules were searched for. This cleanup required changes that were in the 3.15 queue as well as some changes that were added late in the 3.14-rc cycle. This final change waited till the two were merged in upstream and then the change was added and full tests were run. Unfortunately, the test found some errors, but after it was already submitted to the for-next branch and not to be rebased. Sparse errors were detected by Fengguang Wu's bot tests, and my internal tests discovered that the anonymous union initialization triggered a bug in older gcc compilers. Luckily, there was a bugzilla for the gcc bug which gave a work around to the problem. The third and fourth patch handled the sparse error and the gcc bug respectively. A final patch was tagged along to fix a missing documentation for the README file" * tag 'trace-3.15-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Add missing function triggers dump and cpudump to README tracing: Fix anonymous unions in struct ftrace_event_call tracepoint: Fix sparse warnings in tracepoint.c tracepoint: Simplify tracepoint module search tracepoint: Use struct pointer instead of name hash for reg/unreg tracepoints |
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Mathieu Desnoyers
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abb43f6998 |
tracing: Fix anonymous unions in struct ftrace_event_call
gcc <= 4.5.x has significant limitations with respect to initialization of anonymous unions within structures. They need to be surrounded by brackets, _and_ they need to be initialized in the same order in which they appear in the structure declaration. Link: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=10676 Link: http://lkml.kernel.org/r/1397077568-3156-1-git-send-email-mathieu.desnoyers@efficios.com Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
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Linus Torvalds
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39de65aa2c |
Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
"Here is the pull request from the i2c subsystem. It got a little
delayed because I needed to wait for a dependency to be included
(commit b424080a9e08: "reset: Add optional resets and stubs"). Plus,
I had some email problems. All done now, the highlights are:
- drivers can now deprecate their use of i2c classes. That shouldn't
be used on embedded platforms anyhow and was often blindly
copy&pasted. This mechanism gives users time to switch away and
ultimately boot faster once the use of classes for those drivers is
gone for good.
- new drivers for QUP, Cadence, efm32
- tracepoint support for I2C and SMBus
- bigger cleanups for the mv64xxx, nomadik, and designware drivers
And the usual bugfixes, cleanups, feature additions. Most stuff has
been in linux-next for a while. Just some hot fixes and new drivers
were added a bit more recently."
* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (63 commits)
i2c: cadence: fix Kconfig dependency
i2c: Add driver for Cadence I2C controller
i2c: cadence: Document device tree bindings
Documentation: i2c: improve section about flags mangling the protocol
i2c: qup: use proper type fro clk_freq
i2c: qup: off by ones in qup_i2c_probe()
i2c: efm32: fix binding doc
MAINTAINERS: update I2C web resources
i2c: qup: New bus driver for the Qualcomm QUP I2C controller
i2c: qup: Add device tree bindings information
i2c: i2c-xiic: deprecate class based instantiation
i2c: i2c-sirf: deprecate class based instantiation
i2c: i2c-mv64xxx: deprecate class based instantiation
i2c: i2c-designware-platdrv: deprecate class based instantiation
i2c: i2c-davinci: deprecate class based instantiation
i2c: i2c-bcm2835: deprecate class based instantiation
i2c: mv64xxx: Fix reset controller handling
i2c: omap: fix usage of IS_ERR_VALUE with pm_runtime_get_sync
i2c: efm32: new bus driver
i2c: exynos5: remove unnecessary cast of void pointer
...
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Mathieu Desnoyers
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b725dfea24 |
tracepoint: Fix sparse warnings in tracepoint.c
Fix the following sparse warnings: CHECK kernel/tracepoint.c kernel/tracepoint.c:184:18: warning: incorrect type in assignment (different address spaces) kernel/tracepoint.c:184:18: expected struct tracepoint_func *tp_funcs kernel/tracepoint.c:184:18: got struct tracepoint_func [noderef] <asn:4>*funcs kernel/tracepoint.c:216:18: warning: incorrect type in assignment (different address spaces) kernel/tracepoint.c:216:18: expected struct tracepoint_func *tp_funcs kernel/tracepoint.c:216:18: got struct tracepoint_func [noderef] <asn:4>*funcs kernel/tracepoint.c:392:24: error: return expression in void function CC kernel/tracepoint.o kernel/tracepoint.c: In function tracepoint_module_going: kernel/tracepoint.c:491:6: warning: symbol 'syscall_regfunc' was not declared. Should it be static? kernel/tracepoint.c:508:6: warning: symbol 'syscall_unregfunc' was not declared. Should it be static? Link: http://lkml.kernel.org/r/1397049883-28692-1-git-send-email-mathieu.desnoyers@efficios.com Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
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Mathieu Desnoyers
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de7b297390 |
tracepoint: Use struct pointer instead of name hash for reg/unreg tracepoints
Register/unregister tracepoint probes with struct tracepoint pointer rather than tracepoint name. This change, which vastly simplifies tracepoint.c, has been proposed by Steven Rostedt. It also removes 8.8kB (mostly of text) to the vmlinux size. From this point on, the tracers need to pass a struct tracepoint pointer to probe register/unregister. A probe can now only be connected to a tracepoint that exists. Moreover, tracers are responsible for unregistering the probe before the module containing its associated tracepoint is unloaded. text data bss dec hex filename 10443444 4282528 10391552 25117524 17f4354 vmlinux.orig 10434930 4282848 10391552 25109330 17f2352 vmlinux Link: http://lkml.kernel.org/r/1396992381-23785-2-git-send-email-mathieu.desnoyers@efficios.com CC: Ingo Molnar <mingo@kernel.org> CC: Frederic Weisbecker <fweisbec@gmail.com> CC: Andrew Morton <akpm@linux-foundation.org> CC: Frank Ch. Eigler <fche@redhat.com> CC: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> [ SDR - fixed return val in void func in tracepoint_module_going() ] Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
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Oleg Nesterov
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23aebe1691 |
exec: kill bprm->tcomm[], simplify the "basename" logic
Starting from commit |
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Linus Torvalds
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6f4c98e1c2 |
Nothing major: the stricter permissions checking for sysfs broke
a staging driver; fix included. Greg KH said he'd take the patch but hadn't as the merge window opened, so it's included here to avoid breaking build. Cheers, Rusty. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQIcBAABAgAGBQJTQMH9AAoJENkgDmzRrbjxo4UP/jwlenP44v+RFpo/dn8Z8E2n SREQscU5ZZKvuyFD6kUdvOz8YC/nTrJvXoVkMUF05GVbuvb8/8UPtT9ECVemd0rW xNy4aFfv9rbrqRLBLpLK9LAgTuhwlbTgGxgL78zRn3hWmf1hBZWCY+cEvKM8l/+9 oEQdORL0sUpZh7iryAeGqbOrXT4gqJEvSLOFwiYTSo6ryzWIilmdXSUAh6s8MIEX PR1+oH9J8B6J29lcXKMf8/sDI1EBUeSLdBmMCuN5Y7xpYxsQLroVx94kPbdBY+XK ZRoYuUGSUJfGRZY46cFKApIGeF07z1DGoyXghbSWEQrI+23TMUmrKUg47LSukE4Y yCUf8HAtqIA3gVc9GKDdSp/2UpkAhTTv5ogKgnIzs1InWtOIBdDRSVUQXDosFEXw 6ZZe1pQs2zfXyXxO4j0Wq36K4RgI0aqOVw+dcC+w5BidjVylgnYRV0PSDd72tid7 bIfnjDbUBo+o4LanPNGYK474KyO7AslgTE50w6zwbJzgdwCQ36hCpKqScBZzm60a 42LrgTVoIHHWAL1tDzWL/LzWflZGdJAezzNje0/f2Q3bGMiNHWoljAvUphkTZ7qt E8+jWqmM+riH3e8Y5wKpO1BKt7NGHISEy//bUlnqTwisjIzVILZ6VjfugQ1AI+0x llTXPBotFvfvXqxunBg7 =yzUO -----END PGP SIGNATURE----- Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull module updates from Rusty Russell: "Nothing major: the stricter permissions checking for sysfs broke a staging driver; fix included. Greg KH said he'd take the patch but hadn't as the merge window opened, so it's included here to avoid breaking build" * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: staging: fix up speakup kobject mode Use 'E' instead of 'X' for unsigned module taint flag. VERIFY_OCTAL_PERMISSIONS: stricter checking for sysfs perms. kallsyms: fix percpu vars on x86-64 with relocation. kallsyms: generalize address range checking module: LLVMLinux: Remove unused function warning from __param_check macro Fix: module signature vs tracepoints: add new TAINT_UNSIGNED_MODULE module: remove MODULE_GENERIC_TABLE module: allow multiple calls to MODULE_DEVICE_TABLE() per module module: use pr_cont |
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Linus Torvalds
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24e7ea3bea |
Major changes for 3.14 include support for the newly added ZERO_RANGE
and COLLAPSE_RANGE fallocate operations, and scalability improvements in the jbd2 layer and in xattr handling when the extended attributes spill over into an external block. Other than that, the usual clean ups and minor bug fixes. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABCAAGBQJTPbD2AAoJENNvdpvBGATwDmUQANSfGYIQazB8XKKgtNTMiG/Y Ky7n1JzN9lTX/6nMsqQnbfCweLRmxqpWUBuyKDRHUi8IG0/voXSTFsAOOgz0R15A ERRRWkVvHixLpohuL/iBdEMFHwNZYPGr3jkm0EIgzhtXNgk5DNmiuMwvHmCY27kI kdNZIw9fip/WRNoFLDBGnLGC37aanoHhCIbVlySy5o9LN1pkC8BgXAYV0Rk19SVd bWCudSJEirFEqWS5H8vsBAEm/ioxTjwnNL8tX8qms6orZ6h8yMLFkHoIGWPw3Q15 a0TSUoMyav50Yr59QaDeWx9uaPQVeK41wiYFI2rZOnyG2ts0u0YXs/nLwJqTovgs rzvbdl6cd3Nj++rPi97MTA7iXK96WQPjsDJoeeEgnB0d/qPyTk6mLKgftzLTNgSa ZmWjrB19kr6CMbebMC4L6eqJ8Fr66pCT8c/iue8wc4MUHi7FwHKH64fqWvzp2YT/ +165dqqo2JnUv7tIp6sUi1geun+bmDHLZFXgFa7fNYFtcU3I+uY1mRr3eMVAJndA 2d6ASe/KhQbpVnjKJdQ8/b833ZS3p+zkgVPrd68bBr3t7gUmX91wk+p1ct6rUPLr 700F+q/pQWL8ap0pU9Ht/h3gEJIfmRzTwxlOeYyOwDseqKuS87PSB3BzV3dDunSU DrPKlXwIgva7zq5/S0Vr =4s1Z -----END PGP SIGNATURE----- Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 updates from Ted Ts'o: "Major changes for 3.14 include support for the newly added ZERO_RANGE and COLLAPSE_RANGE fallocate operations, and scalability improvements in the jbd2 layer and in xattr handling when the extended attributes spill over into an external block. Other than that, the usual clean ups and minor bug fixes" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (42 commits) ext4: fix premature freeing of partial clusters split across leaf blocks ext4: remove unneeded test of ret variable ext4: fix comment typo ext4: make ext4_block_zero_page_range static ext4: atomically set inode->i_flags in ext4_set_inode_flags() ext4: optimize Hurd tests when reading/writing inodes ext4: kill i_version support for Hurd-castrated file systems ext4: each filesystem creates and uses its own mb_cache fs/mbcache.c: doucple the locking of local from global data fs/mbcache.c: change block and index hash chain to hlist_bl_node ext4: Introduce FALLOC_FL_ZERO_RANGE flag for fallocate ext4: refactor ext4_fallocate code ext4: Update inode i_size after the preallocation ext4: fix partial cluster handling for bigalloc file systems ext4: delete path dealloc code in ext4_ext_handle_uninitialized_extents ext4: only call sync_filesystm() when remounting read-only fs: push sync_filesystem() down to the file system's remount_fs() jbd2: improve error messages for inconsistent journal heads jbd2: minimize region locked by j_list_lock in jbd2_journal_forget() jbd2: minimize region locked by j_list_lock in journal_get_create_access() ... |
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Linus Torvalds
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53c566625f |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs changes from Chris Mason: "This is a pretty long stream of bug fixes and performance fixes. Qu Wenruo has replaced the btrfs async threads with regular kernel workqueues. We'll keep an eye out for performance differences, but it's nice to be using more generic code for this. We still have some corruption fixes and other patches coming in for the merge window, but this batch is tested and ready to go" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (108 commits) Btrfs: fix a crash of clone with inline extents's split btrfs: fix uninit variable warning Btrfs: take into account total references when doing backref lookup Btrfs: part 2, fix incremental send's decision to delay a dir move/rename Btrfs: fix incremental send's decision to delay a dir move/rename Btrfs: remove unnecessary inode generation lookup in send Btrfs: fix race when updating existing ref head btrfs: Add trace for btrfs_workqueue alloc/destroy Btrfs: less fs tree lock contention when using autodefrag Btrfs: return EPERM when deleting a default subvolume Btrfs: add missing kfree in btrfs_destroy_workqueue Btrfs: cache extent states in defrag code path Btrfs: fix deadlock with nested trans handles Btrfs: fix possible empty list access when flushing the delalloc inodes Btrfs: split the global ordered extents mutex Btrfs: don't flush all delalloc inodes when we doesn't get s_umount lock Btrfs: reclaim delalloc metadata more aggressively Btrfs: remove unnecessary lock in may_commit_transaction() Btrfs: remove the unnecessary flush when preparing the pages Btrfs: just do dirty page flush for the inode with compression before direct IO ... |
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Linus Torvalds
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3c83e61e67 |
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
"The main set of series of patches for media subsystem, including:
- document RC sysfs class
- added an API to setup scancode to allow waking up systems using the
Remote Controller
- add API for SDR devices. Drivers are still on staging
- some API improvements for getting EDID data from media
inputs/outputs
- new DVB frontend driver for drx-j (ATSC)
- one driver (it913x/it9137) got removed, in favor of an improvement
on another driver (af9035)
- added a skeleton V4L2 PCI driver at documentation
- added a dual flash driver (lm3646)
- added a new IR driver (img-ir)
- added an IR scancode decoder for the Sharp protocol
- some improvements at the usbtv driver, to allow its core to be
reused.
- added a new SDR driver (rtl2832u_sdr)
- added a new tuner driver (msi001)
- several improvements at em28xx driver to fix PM support, device
removal and to split the V4L2 specific bits into a separate
sub-driver
- one driver got converted to videobuf2 (s2255drv)
- the e4000 tuner driver now follows an improved binding model
- some fixes at V4L2 compat32 code
- several fixes and enhancements at videobuf2 code
- some cleanups at V4L2 API documentation
- usual driver enhancements, new board additions and misc fixups"
[ NOTE! This merge effective drops commit
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Linus Torvalds
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68114e5eb8 |
Most of the changes were largely clean ups, and some documentation.
But there were a few features that were added. Uprobes now work with event triggers and multi buffers. Uprobes have support under ftrace and perf. The big feature is that the function tracer can now be used within the multi buffer instances. That is, you can now trace some functions in one buffer, others in another buffer, all functions in a third buffer and so on. They are basically agnostic from each other. This only works for the function tracer and not for the function graph trace, although you can have the function graph tracer running in the top level buffer (or any tracer for that matter) and have different function tracing going on in the sub buffers. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJTOthtAAoJEKQekfcNnQGu5c8H/Ana/U+0tmksp1dbHkRHsKSH +Fsv4Jeu8gf1NaFKHEhkUTcFtnzE6qAPV2VCrcJwXbhAhhwZm+LjrnWdoy3215S3 cQW4LftLEonh2cM36Cos74TulMEYN6XmL6dQZV+CILKQkDrWU4qJjQ64okXEkqrd 9iG3p/mSXyvJcmnyg61ALnMOhZDLsXY3djBhWBPhiTPGS6BRb9zh4Pmw6Zv0n2rJ U93Gt/3AQrv1ybu73dUxqP0abp60oXOiWoF/R2jcbKqIM+K9RPJX79unCV3jq3u9 f+6jMlB9PgAMqQj6ihJdwxKDDuzwyrVdEPnsgvl4jarCBCtVVwhKedBaKN/KS8k= =HdXY -----END PGP SIGNATURE----- Merge tag 'trace-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: "Most of the changes were largely clean ups, and some documentation. But there were a few features that were added: Uprobes now work with event triggers and multi buffers and have support under ftrace and perf. The big feature is that the function tracer can now be used within the multi buffer instances. That is, you can now trace some functions in one buffer, others in another buffer, all functions in a third buffer and so on. They are basically agnostic from each other. This only works for the function tracer and not for the function graph trace, although you can have the function graph tracer running in the top level buffer (or any tracer for that matter) and have different function tracing going on in the sub buffers" * tag 'trace-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (45 commits) tracing: Add BUG_ON when stack end location is over written tracepoint: Remove unused API functions Revert "tracing: Move event storage for array from macro to standalone function" ftrace: Constify ftrace_text_reserved tracepoints: API doc update to tracepoint_probe_register() return value tracepoints: API doc update to data argument ftrace: Fix compilation warning about control_ops_free ftrace/x86: BUG when ftrace recovery fails ftrace: Warn on error when modifying ftrace function ftrace: Remove freelist from struct dyn_ftrace ftrace: Do not pass data to ftrace_dyn_arch_init ftrace: Pass retval through return in ftrace_dyn_arch_init() ftrace: Inline the code from ftrace_dyn_table_alloc() ftrace: Cleanup of global variables ftrace_new_pgs and ftrace_update_cnt tracing: Evaluate len expression only once in __dynamic_array macro tracing: Correctly expand len expressions from __dynamic_array macro tracing/module: Replace include of tracepoint.h with jump_label.h in module.h tracing: Fix event header migrate.h to include tracepoint.h tracing: Fix event header writeback.h to include tracepoint.h tracing: Warn if a tracepoint is not set via debugfs ... |
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Linus Torvalds
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cd6362befe |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
"Here is my initial pull request for the networking subsystem during
this merge window:
1) Support for ESN in AH (RFC 4302) from Fan Du.
2) Add full kernel doc for ethtool command structures, from Ben
Hutchings.
3) Add BCM7xxx PHY driver, from Florian Fainelli.
4) Export computed TCP rate information in netlink socket dumps, from
Eric Dumazet.
5) Allow IPSEC SA to be dumped partially using a filter, from Nicolas
Dichtel.
6) Convert many drivers to pci_enable_msix_range(), from Alexander
Gordeev.
7) Record SKB timestamps more efficiently, from Eric Dumazet.
8) Switch to microsecond resolution for TCP round trip times, also
from Eric Dumazet.
9) Clean up and fix 6lowpan fragmentation handling by making use of
the existing inet_frag api for it's implementation.
10) Add TX grant mapping to xen-netback driver, from Zoltan Kiss.
11) Auto size SKB lengths when composing netlink messages based upon
past message sizes used, from Eric Dumazet.
12) qdisc dumps can take a long time, add a cond_resched(), From Eric
Dumazet.
13) Sanitize netpoll core and drivers wrt. SKB handling semantics.
Get rid of never-used-in-tree netpoll RX handling. From Eric W
Biederman.
14) Support inter-address-family and namespace changing in VTI tunnel
driver(s). From Steffen Klassert.
15) Add Altera TSE driver, from Vince Bridgers.
16) Optimizing csum_replace2() so that it doesn't adjust the checksum
by checksumming the entire header, from Eric Dumazet.
17) Expand BPF internal implementation for faster interpreting, more
direct translations into JIT'd code, and much cleaner uses of BPF
filtering in non-socket ocntexts. From Daniel Borkmann and Alexei
Starovoitov"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1976 commits)
netpoll: Use skb_irq_freeable to make zap_completion_queue safe.
net: Add a test to see if a skb is freeable in irq context
qlcnic: Fix build failure due to undefined reference to `vxlan_get_rx_port'
net: ptp: move PTP classifier in its own file
net: sxgbe: make "core_ops" static
net: sxgbe: fix logical vs bitwise operation
net: sxgbe: sxgbe_mdio_register() frees the bus
Call efx_set_channels() before efx->type->dimension_resources()
xen-netback: disable rogue vif in kthread context
net/mlx4: Set proper build dependancy with vxlan
be2net: fix build dependency on VxLAN
mac802154: make csma/cca parameters per-wpan
mac802154: allow only one WPAN to be up at any given time
net: filter: minor: fix kdoc in __sk_run_filter
netlink: don't compare the nul-termination in nla_strcmp
can: c_can: Avoid led toggling for every packet.
can: c_can: Simplify TX interrupt cleanup
can: c_can: Store dlc private
can: c_can: Reduce register access
can: c_can: Make the code readable
...
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Linus Torvalds
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b33ce44299 |
Merge branch 'for-3.15/drivers' of git://git.kernel.dk/linux-block
Pull block driver update from Jens Axboe:
"On top of the core pull request, here's the pull request for the
driver related changes for 3.15. It contains:
- Improvements for msi-x registration for block drivers (mtip32xx,
skd, cciss, nvme) from Alexander Gordeev.
- A round of cleanups and improvements for drbd from Andreas
Gruenbacher and Rashika Kheria.
- A round of clanups and improvements for bcache from Kent.
- Removal of sleep_on() and friends in DAC960, ataflop, swim3 from
Arnd Bergmann.
- Bug fix for a bug in the mtip32xx async completion code from Sam
Bradshaw.
- Bug fix for accidentally bouncing IO on 32-bit platforms with
mtip32xx from Felipe Franciosi"
* 'for-3.15/drivers' of git://git.kernel.dk/linux-block: (103 commits)
bcache: remove nested function usage
bcache: Kill bucket->gc_gen
bcache: Kill unused freelist
bcache: Rework btree cache reserve handling
bcache: Kill btree_io_wq
bcache: btree locking rework
bcache: Fix a race when freeing btree nodes
bcache: Add a real GC_MARK_RECLAIMABLE
bcache: Add bch_keylist_init_single()
bcache: Improve priority_stats
bcache: Better alloc tracepoints
bcache: Kill dead cgroup code
bcache: stop moving_gc marking buckets that can't be moved.
bcache: Fix moving_pred()
bcache: Fix moving_gc deadlocking with a foreground write
bcache: Fix discard granularity
bcache: Fix another bug recovering from unclean shutdown
bcache: Fix a bug recovering from unclean shutdown
bcache: Fix a journalling reclaim after recovery bug
bcache: Fix a null ptr deref in journal replay
...
|
|
|
Linus Torvalds
|
7a48837732 |
Merge branch 'for-3.15/core' of git://git.kernel.dk/linux-block
Pull core block layer updates from Jens Axboe:
"This is the pull request for the core block IO bits for the 3.15
kernel. It's a smaller round this time, it contains:
- Various little blk-mq fixes and additions from Christoph and
myself.
- Cleanup of the IPI usage from the block layer, and associated
helper code. From Frederic Weisbecker and Jan Kara.
- Duplicate code cleanup in bio-integrity from Gu Zheng. This will
give you a merge conflict, but that should be easy to resolve.
- blk-mq notify spinlock fix for RT from Mike Galbraith.
- A blktrace partial accounting bug fix from Roman Pen.
- Missing REQ_SYNC detection fix for blk-mq from Shaohua Li"
* 'for-3.15/core' of git://git.kernel.dk/linux-block: (25 commits)
blk-mq: add REQ_SYNC early
rt,blk,mq: Make blk_mq_cpu_notify_lock a raw spinlock
blk-mq: support partial I/O completions
blk-mq: merge blk_mq_insert_request and blk_mq_run_request
blk-mq: remove blk_mq_alloc_rq
blk-mq: don't dump CPU -> hw queue map on driver load
blk-mq: fix wrong usage of hctx->state vs hctx->flags
blk-mq: allow blk_mq_init_commands() to return failure
block: remove old blk_iopoll_enabled variable
blktrace: fix accounting of partially completed requests
smp: Rename __smp_call_function_single() to smp_call_function_single_async()
smp: Remove wait argument from __smp_call_function_single()
watchdog: Simplify a little the IPI call
smp: Move __smp_call_function_single() below its safe version
smp: Consolidate the various smp_call_function_single() declensions
smp: Teach __smp_call_function_single() to check for offline cpus
smp: Remove unused list_head from csd
smp: Iterate functions through llist_for_each_entry_safe()
block: Stop abusing rq->csd.list in blk-softirq
block: Remove useless IPI struct initialization
...
|
|
|
Linus Torvalds
|
c70929147a |
sound updates for 3.15-rc1
There have been lots of changes in ALSA core, HD-audio and ASoC, also
most of PCI drivers touched by conversions of printks. All these
resulted in a high volume and wide ranged patch sets in this release.
Many changes are fairly trivial, but also lots of nice cleanups and
refactors. There are a few new drivers, most notably, the Intel
Haswell and Baytrail ASoC driver.
Core changes:
- A bit modernization; embed the device struct into snd_card struct,
so that it may be referred from the beginning. A new snd_card_new()
function is introduced for that, and all drivers have been
converted.
- Simplification in the device management code in ALSA core;
now managed by a simple priority list instead
- Converted many kernel messages to use the standard dev_err() & co;
this would be the pretty visible difference, especially for
HD-audio.
HD-audio:
- Conexant codecs use the auto-parser as default now;
the old static code still remains in case of regressions.
Some old quirks have been rewritten with the fixups for auto-parser.
- C-Media codecs also use the auto-parser as default now, too.
- A device struct is assigned to each HD-audio codec, and the formerly
hwdep attributes are accessible over the codec sysfs, too.
hwdep attributes still remain for compatibility.
- Split the PCI-specific stuff for HD-audio controller into a separate
module, ane make a helper module for the generic controller driver.
This is a preliminary change for supporting Tegra HDMI controller in
near future, which slipped from 3.15 merge.
- Device-specific fixes: mute LED support for Lenovo Ideapad,
mic LED fix for HP laptops, more ASUS subwoofer quirks, yet more
Dell laptop headset quirks
- Make the HD-audio codec response a bit more robust
- A few improvements on Realtek ALC282 / 283 about the pop noises
- A couple of Intel HDMI fixes
ASoC:
- Lots of cleanups for enumerations; refactored lots of error prone
original codes to use more modern APIs
- Elimination of the ASoC level wrappers for I2C and SPI moving us
closer to converting to regmap completely and avoiding some
randconfig hassle
- Provide both manually and transparently locked DAPM APIs rather than
a mix of the two fixing some concurrency issues
- Start converting CODEC drivers to use separate bus interface drivers
rather than having them all in one file helping avoid dependency
issues
- DPCM support for Intel Haswell and Bay Trail platforms, lots of
fixes
- Lots of work on improvements for simple-card, DaVinci and the Renesas
rcar drivers.
- New drivers for Analog Devices ADAU1977, TI PCM512x and parts of the
CSR SiRF SoC, TLV320AIC31XXX, Armada 370 DB, Cirrus cs42xx8
- Fixes for the simple-card DAI format DT mess
- DT support for a couple more devices.
- Use of the tdm_slot mapping in a few drivers
Others:
- Support of reset_resume callback for improved S4 in USB-audio driver;
the device with boot quirks have been little tested, which we need
to watch out in this development cycle
- Add PM support for ICE1712 driver (finally!);
it's still pretty partial support, only for M-Audio devices
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Merge tag 'sound-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"There have been lots of changes in ALSA core, HD-audio and ASoC, also
most of PCI drivers touched by conversions of printks. All these
resulted in a high volume and wide ranged patch sets in this release.
Many changes are fairly trivial, but also lots of nice cleanups and
refactors. There are a few new drivers, most notably, the Intel
Haswell and Baytrail ASoC driver.
Core changes:
- A bit modernization; embed the device struct into snd_card struct,
so that it may be referred from the beginning. A new
snd_card_new() function is introduced for that, and all drivers
have been converted.
- Simplification in the device management code in ALSA core; now
managed by a simple priority list instead
- Converted many kernel messages to use the standard dev_err() & co;
this would be the pretty visible difference, especially for
HD-audio.
HD-audio:
- Conexant codecs use the auto-parser as default now; the old static
code still remains in case of regressions. Some old quirks have
been rewritten with the fixups for auto-parser.
- C-Media codecs also use the auto-parser as default now, too.
- A device struct is assigned to each HD-audio codec, and the
formerly hwdep attributes are accessible over the codec sysfs, too.
hwdep attributes still remain for compatibility.
- Split the PCI-specific stuff for HD-audio controller into a
separate module, ane make a helper module for the generic
controller driver. This is a preliminary change for supporting
Tegra HDMI controller in near future, which slipped from 3.15
merge.
- Device-specific fixes: mute LED support for Lenovo Ideapad, mic LED
fix for HP laptops, more ASUS subwoofer quirks, yet more Dell
laptop headset quirks
- Make the HD-audio codec response a bit more robust
- A few improvements on Realtek ALC282 / 283 about the pop noises
- A couple of Intel HDMI fixes
ASoC:
- Lots of cleanups for enumerations; refactored lots of error prone
original codes to use more modern APIs
- Elimination of the ASoC level wrappers for I2C and SPI moving us
closer to converting to regmap completely and avoiding some
randconfig hassle
- Provide both manually and transparently locked DAPM APIs rather
than a mix of the two fixing some concurrency issues
- Start converting CODEC drivers to use separate bus interface
drivers rather than having them all in one file helping avoid
dependency issues
- DPCM support for Intel Haswell and Bay Trail platforms, lots of
fixes
- Lots of work on improvements for simple-card, DaVinci and the
Renesas rcar drivers.
- New drivers for Analog Devices ADAU1977, TI PCM512x and parts of
the CSR SiRF SoC, TLV320AIC31XXX, Armada 370 DB, Cirrus cs42xx8
- Fixes for the simple-card DAI format DT mess
- DT support for a couple more devices.
- Use of the tdm_slot mapping in a few drivers
Others:
- Support of reset_resume callback for improved S4 in USB-audio
driver; the device with boot quirks have been little tested, which
we need to watch out in this development cycle
- Add PM support for ICE1712 driver (finally!); it's still pretty
partial support, only for M-Audio devices"
* tag 'sound-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (610 commits)
ALSA: ice1712: Add suspend support for M-Audio ICE1712-based cards
ALSA: ice1712: add suspend support for ICE1712 chip
ALSA: hda - Enable beep for ASUS 1015E
ALSA: asihpi: fix some indenting in snd_card_asihpi_pcm_new()
ALSA: hda - add headset mic detect quirks for three Dell laptops
ASoC: tegra: move AC97 clock handling to the machine driver
ASoC: simple-card: Handle many DAI links
ASoC: simple-card: Add DT documentation for multi-DAI links
ASoC: simple-card: dynamically allocate the DAI link and properties
ASoC: imx-ssi: Add .xlate_tdm_slot_mask() support.
ASoC: fsl-esai: Add .xlate_tdm_slot_mask() support.
ASoC: fsl-utils: Add fsl_asoc_xlate_tdm_slot_mask() support.
ASoC: core: remove the 'of_' prefix of of_xlate_tdm_slot_mask.
ASoC: rcar: subnode tidyup for renesas,rsnd.txt
ASoC: Remove name_prefix unset during DAI link init hack
ALSA: hda - Inform the unexpectedly ignored pins by auto-parser
ASoC: rcar: bugfix: it cares about the non-src case
ARM: bockw: fixup SND_SOC_DAIFMT_CBx_CFx flags
ASoC: pcm: Drop incorrect double/extra frees
ASoC: mfld_machine: Fix compile error
...
|
|
|
Linus Torvalds
|
4dedde7c7a |
ACPI and power management updates for 3.15-rc1
- Device PM QoS support for latency tolerance constraints on systems with
hardware interfaces allowing such constraints to be specified. That is
necessary to prevent hardware-driven power management from becoming
overly aggressive on some systems and to prevent power management
features leading to excessive latencies from being used in some cases.
- Consolidation of the handling of ACPI hotplug notifications for device
objects. This causes all device hotplug notifications to go through
the root notify handler (that was executed for all of them anyway
before) that propagates them to individual subsystems, if necessary,
by executing callbacks provided by those subsystems (those callbacks
are associated with struct acpi_device objects during device
enumeration). As a result, the code in question becomes both smaller
in size and more straightforward and all of those changes should not
affect users.
- ACPICA update, including fixes related to the handling of _PRT in cases
when it is broken and the addition of "Windows 2013" to the list of
supported "features" for _OSI (which is necessary to support systems
that work incorrectly or don't even boot without it). Changes from
Bob Moore and Lv Zheng.
- Consolidation of ACPI _OST handling from Jiang Liu.
- ACPI battery and AC fixes allowing unusual system configurations to
be handled by that code from Alexander Mezin.
- New device IDs for the ACPI LPSS driver from Chiau Ee Chew.
- ACPI fan and thermal optimizations related to system suspend and resume
from Aaron Lu.
- Cleanups related to ACPI video from Jean Delvare.
- Assorted ACPI fixes and cleanups from Al Stone, Hanjun Guo, Lan Tianyu,
Paul Bolle, Tomasz Nowicki.
- Intel RAPL (Running Average Power Limits) driver cleanups from Jacob Pan.
- intel_pstate fixes and cleanups from Dirk Brandewie.
- cpufreq fixes related to system suspend/resume handling from Viresh Kumar.
- cpufreq core fixes and cleanups from Viresh Kumar, Stratos Karafotis,
Saravana Kannan, Rashika Kheria, Joe Perches.
- cpufreq drivers updates from Viresh Kumar, Zhuoyu Zhang, Rob Herring.
- cpuidle fixes related to the menu governor from Tuukka Tikkanen.
- cpuidle fix related to coupled CPUs handling from Paul Burton.
- Asynchronous execution of all device suspend and resume callbacks,
except for ->prepare and ->complete, during system suspend and resume
from Chuansheng Liu.
- Delayed resuming of runtime-suspended devices during system suspend for
the PCI bus type and ACPI PM domain.
- New set of PM helper routines to allow device runtime PM callbacks to
be used during system suspend and resume more easily from Ulf Hansson.
- Assorted fixes and cleanups in the PM core from Geert Uytterhoeven,
Prabhakar Lad, Philipp Zabel, Rashika Kheria, Sebastian Capella.
- devfreq fix from Saravana Kannan.
/
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Merge tag 'pm+acpi-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael Wysocki:
"The majority of this material spent some time in linux-next, some of
it even several weeks. There are a few relatively fresh commits in
it, but they are mostly fixes and simple cleanups.
ACPI took the lead this time, both in terms of the number of commits
and the number of modified lines of code, cpufreq follows and there
are a few changes in the PM core and in cpuidle too.
A new feature that already got some LWN.net's attention is the device
PM QoS extension allowing latency tolerance requirements to be
propagated from leaf devices to their ancestors with hardware
interfaces for specifying latency tolerance. That should help systems
with hardware-driven power management to avoid going too far with it
in cases when there are latency tolerance constraints.
There also are some significant changes in the ACPI core related to
the way in which hotplug notifications are handled. They affect PCI
hotplug (ACPIPHP) and the ACPI dock station code too. The bottom line
is that all those notification now go through the root notify handler
and are propagated to the interested subsystems by means of callbacks
instead of having to install a notify handler for each device object
that we can potentially get hotplug notifications for.
In addition to that ACPICA will now advertise "Windows 2013"
compatibility for _OSI, because some systems out there don't work
correctly if that is not done (some of them don't even boot).
On the system suspend side of things, all of the device suspend and
resume callbacks, except for ->prepare() and ->complete(), are now
going to be executed asynchronously as that turns out to speed up
system suspend and resume on some platforms quite significantly and we
have a few more optimizations in that area.
Apart from that, there are some new device IDs and fixes and cleanups
all over. In particular, the system suspend and resume handling by
cpufreq should be improved and the cpuidle menu governor should be a
bit more robust now.
Specifics:
- Device PM QoS support for latency tolerance constraints on systems
with hardware interfaces allowing such constraints to be specified.
That is necessary to prevent hardware-driven power management from
becoming overly aggressive on some systems and to prevent power
management features leading to excessive latencies from being used
in some cases.
- Consolidation of the handling of ACPI hotplug notifications for
device objects. This causes all device hotplug notifications to go
through the root notify handler (that was executed for all of them
anyway before) that propagates them to individual subsystems, if
necessary, by executing callbacks provided by those subsystems
(those callbacks are associated with struct acpi_device objects
during device enumeration). As a result, the code in question
becomes both smaller in size and more straightforward and all of
those changes should not affect users.
- ACPICA update, including fixes related to the handling of _PRT in
cases when it is broken and the addition of "Windows 2013" to the
list of supported "features" for _OSI (which is necessary to
support systems that work incorrectly or don't even boot without
it). Changes from Bob Moore and Lv Zheng.
- Consolidation of ACPI _OST handling from Jiang Liu.
- ACPI battery and AC fixes allowing unusual system configurations to
be handled by that code from Alexander Mezin.
- New device IDs for the ACPI LPSS driver from Chiau Ee Chew.
- ACPI fan and thermal optimizations related to system suspend and
resume from Aaron Lu.
- Cleanups related to ACPI video from Jean Delvare.
- Assorted ACPI fixes and cleanups from Al Stone, Hanjun Guo, Lan
Tianyu, Paul Bolle, Tomasz Nowicki.
- Intel RAPL (Running Average Power Limits) driver cleanups from
Jacob Pan.
- intel_pstate fixes and cleanups from Dirk Brandewie.
- cpufreq fixes related to system suspend/resume handling from Viresh
Kumar.
- cpufreq core fixes and cleanups from Viresh Kumar, Stratos
Karafotis, Saravana Kannan, Rashika Kheria, Joe Perches.
- cpufreq drivers updates from Viresh Kumar, Zhuoyu Zhang, Rob
Herring.
- cpuidle fixes related to the menu governor from Tuukka Tikkanen.
- cpuidle fix related to coupled CPUs handling from Paul Burton.
- Asynchronous execution of all device suspend and resume callbacks,
except for ->prepare and ->complete, during system suspend and
resume from Chuansheng Liu.
- Delayed resuming of runtime-suspended devices during system suspend
for the PCI bus type and ACPI PM domain.
- New set of PM helper routines to allow device runtime PM callbacks
to be used during system suspend and resume more easily from Ulf
Hansson.
- Assorted fixes and cleanups in the PM core from Geert Uytterhoeven,
Prabhakar Lad, Philipp Zabel, Rashika Kheria, Sebastian Capella.
- devfreq fix from Saravana Kannan"
* tag 'pm+acpi-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (162 commits)
PM / devfreq: Rewrite devfreq_update_status() to fix multiple bugs
PM / sleep: Correct whitespace errors in <linux/pm.h>
intel_pstate: Set core to min P state during core offline
cpufreq: Add stop CPU callback to cpufreq_driver interface
cpufreq: Remove unnecessary braces
cpufreq: Fix checkpatch errors and warnings
cpufreq: powerpc: add cpufreq transition latency for FSL e500mc SoCs
MAINTAINERS: Reorder maintainer addresses for PM and ACPI
PM / Runtime: Update runtime_idle() documentation for return value meaning
video / output: Drop display output class support
fujitsu-laptop: Drop unneeded include
acer-wmi: Stop selecting VIDEO_OUTPUT_CONTROL
ACPI / gpu / drm: Stop selecting VIDEO_OUTPUT_CONTROL
ACPI / video: fix ACPI_VIDEO dependencies
cpufreq: remove unused notifier: CPUFREQ_{SUSPENDCHANGE|RESUMECHANGE}
cpufreq: Do not allow ->setpolicy drivers to provide ->target
cpufreq: arm_big_little: set 'physical_cluster' for each CPU
cpufreq: arm_big_little: make vexpress driver depend on bL core driver
ACPI / button: Add ACPI Button event via netlink routine
ACPI: Remove duplicate definitions of PREFIX
...
|
|
|
Tom Herbert
|
61b905da33 |
net: Rename skb->rxhash to skb->hash
The packet hash can be considered a property of the packet, not just on RX path. This patch changes name of rxhash and l4_rxhash skbuff fields to be hash and l4_hash respectively. This includes changing uses of the field in the code which don't call the access functions. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Mahesh Bandewar <maheshb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
|
|
Mark Brown
|
ba052e1b31 |
ASoC: Updates for v3.15
Quite a busy release for ASoC this time, more on janitorial work than
exciting new features but welcome nontheless:
- Lots of cleanups from Takashi for enumerations; the original API for
these was error prone so he's refactored lots of code to use more
modern APIs which avoid issues.
- Elimination of the ASoC level wrappers for I2C and SPI moving us
closer to converting to regmap completely and avoiding some
randconfig hassle.
- Provide both manually and transparently locked DAPM APIs rather than
a mix of the two fixing some concurrency issues.
- Start converting CODEC drivers to use separate bus interface drivers
rather than having them all in one file helping avoid dependency
issues.
- DPCM support for Intel Haswell and Bay Trail platforms.
- Lots of work on improvements for simple-card, DaVinci and the Renesas
rcar drivers.
- New drivers for Analog Devices ADAU1977, TI PCM512x and parts of the
CSR SiRF SoC.
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Merge tag 'asoc-v3.15' into asoc-next
ASoC: Updates for v3.15
Quite a busy release for ASoC this time, more on janitorial work than
exciting new features but welcome nontheless:
- Lots of cleanups from Takashi for enumerations; the original API for
these was error prone so he's refactored lots of code to use more
modern APIs which avoid issues.
- Elimination of the ASoC level wrappers for I2C and SPI moving us
closer to converting to regmap completely and avoiding some
randconfig hassle.
- Provide both manually and transparently locked DAPM APIs rather than
a mix of the two fixing some concurrency issues.
- Start converting CODEC drivers to use separate bus interface drivers
rather than having them all in one file helping avoid dependency
issues.
- DPCM support for Intel Haswell and Bay Trail platforms.
- Lots of work on improvements for simple-card, DaVinci and the Renesas
rcar drivers.
- New drivers for Analog Devices ADAU1977, TI PCM512x and parts of the
CSR SiRF SoC.
# gpg: Signature made Wed 12 Mar 2014 23:05:45 GMT using RSA key ID 7EA229BD
# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>"
# gpg: aka "Mark Brown <broonie@debian.org>"
# gpg: aka "Mark Brown <broonie@kernel.org>"
# gpg: aka "Mark Brown <broonie@tardis.ed.ac.uk>"
# gpg: aka "Mark Brown <broonie@linaro.org>"
# gpg: aka "Mark Brown <Mark.Brown@linaro.org>"
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Steven Rostedt (Red Hat)
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bc4c426ee2 |
Revert "tracing: Move event storage for array from macro to standalone function"
I originally wrote commit
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Qu Wenruo
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c3a468915a |
btrfs: Add trace for btrfs_workqueue alloc/destroy
Since most of the btrfs_workqueue is printed as pointer address, for easier analysis, add trace for btrfs_workqueue alloc/destroy. So it is possible to determine the workqueue that a given work belongs to(by comparing the wq pointer address with alloc trace event). Signed-off-by: Qu Wenruo <quenruo@cn.fujitsu.com> Signed-off-by: Chris Mason <clm@fb.com> |
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Vaibhav Nagarnaik
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87291347c4 |
tracing: Fix array size mismatch in format string
In event format strings, the array size is reported in two locations.
One in array subscript and then via the "size:" attribute. The values
reported there have a mismatch.
For e.g., in sched:sched_switch the prev_comm and next_comm character
arrays have subscript values as [32] where as the actual field size is
16.
name: sched_switch
ID: 301
format:
field:unsigned short common_type; offset:0; size:2; signed:0;
field:unsigned char common_flags; offset:2; size:1; signed:0;
field:unsigned char common_preempt_count; offset:3; size:1;signed:0;
field:int common_pid; offset:4; size:4; signed:1;
field:char prev_comm[32]; offset:8; size:16; signed:1;
field:pid_t prev_pid; offset:24; size:4; signed:1;
field:int prev_prio; offset:28; size:4; signed:1;
field:long prev_state; offset:32; size:8; signed:1;
field:char next_comm[32]; offset:40; size:16; signed:1;
field:pid_t next_pid; offset:56; size:4; signed:1;
field:int next_prio; offset:60; size:4; signed:1;
After bisection, the following commit was blamed:
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Rafael J. Wysocki
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165f5fd04a |
Merge branches 'pm-qos', 'pm-domains' and 'pm-drivers'
* pm-qos: PM / QoS: Add type to dev_pm_qos_add_ancestor_request() arguments ACPI / LPSS: Support for device latency tolerance PM QoS ACPI / scan: Add bind/unbind callbacks to struct acpi_scan_handler PM / QoS: Introcuce latency tolerance device PM QoS type PM / QoS: Add no_constraints_value field to struct pm_qos_constraints PM / QoS: Rename device resume latency QoS items * pm-domains: PM / domains: Turn latency warning into debug message * pm-drivers: PM: Add pm_runtime_suspend|resume_force functions PM / runtime: Fetch runtime PM callbacks using a macro |
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Lukas Czerner
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b8a8684502 |
ext4: Introduce FALLOC_FL_ZERO_RANGE flag for fallocate
Introduce new FALLOC_FL_ZERO_RANGE flag for fallocate. This has the same functionality as xfs ioctl XFS_IOC_ZERO_RANGE. It can be used to convert a range of file to zeros preferably without issuing data IO. Blocks should be preallocated for the regions that span holes in the file, and the entire range is preferable converted to unwritten extents This can be also used to preallocate blocks past EOF in the same way as with fallocate. Flag FALLOC_FL_KEEP_SIZE which should cause the inode size to remain the same. Also add appropriate tracepoints. Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> |
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Kent Overstreet
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2531d9ee61 |
bcache: Kill unused freelist
This was originally added as at optimization that for various reasons isn't needed anymore, but it does add a lot of nasty corner cases (and it was responsible for some recently fixed bugs). Just get rid of it now. Signed-off-by: Kent Overstreet <kmo@daterainc.com> |
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Kent Overstreet
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7159b1ad3d |
bcache: Better alloc tracepoints
Change the invalidate tracepoint to indicate how much data we're invalidating, and change the alloc tracepoints to indicate what offset they're for. Signed-off-by: Kent Overstreet <kmo@daterainc.com> |
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David Howells
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8a325997d9 |
i2c: Add message transfer tracepoints for SMBUS [ver #2]
The SMBUS tracepoints can be enabled thusly:
echo 1 >/sys/kernel/debug/tracing/events/i2c/enable
and will dump messages that can be viewed in /sys/kernel/debug/tracing/trace
that look like:
... smbus_read: i2c-0 a=051 f=0000 c=fa BYTE_DATA
... smbus_reply: i2c-0 a=051 f=0000 c=fa BYTE_DATA l=1 [39]
... smbus_result: i2c-0 a=051 f=0000 c=fa BYTE_DATA rd res=0
formatted as:
i2c-<adapter-nr>
a=<addr>
f=<flags>
c=<command>
<protocol-name>
<rd|wr>
res=<result>
l=<data-len>
[<data-block>]
The adapters to be traced can be selected by something like:
echo adapter_nr==1 >/sys/kernel/debug/tracing/events/i2c/filter
Note that this shares the same filter and enablement as i2c.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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David Howells
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d9a83d62b3 |
i2c: Add message transfer tracepoints for I2C
Add tracepoints into the I2C message transfer function to retrieve the message sent or received. The following config options must be turned on to make use of the facility: CONFIG_FTRACE CONFIG_ENABLE_DEFAULT_TRACERS The I2C tracepoint can be enabled thusly: echo 1 >/sys/kernel/debug/tracing/events/i2c/enable and will dump messages that can be viewed in /sys/kernel/debug/tracing/trace that look like: ... i2c_write: i2c-5 #0 a=044 f=0000 l=2 [02-14] ... i2c_read: i2c-5 #1 a=044 f=0001 l=4 ... i2c_reply: i2c-5 #1 a=044 f=0001 l=4 [33-00-00-00] ... i2c_result: i2c-5 n=2 ret=2 formatted as: i2c-<adapter-nr> #<message-array-index> a=<addr> f=<flags> l=<datalen> n=<message-array-size> ret=<result> [<data>] The operation is done between the i2c_write/i2c_read lines and the i2c_reply and i2c_result lines so that if the hardware hangs, the trace buffer can be consulted to determine the problematic operation. The adapters to be traced can be selected by something like: echo adapter_nr==1 >/sys/kernel/debug/tracing/events/i2c/filter These changes are based on code from Steven Rostedt. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> [wsa: adapted path for 'enable' in the commit msg] Signed-off-by: Wolfram Sang <wsa@the-dreams.de> |
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Mathieu Desnoyers
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66cc69e34e |
Fix: module signature vs tracepoints: add new TAINT_UNSIGNED_MODULE
Users have reported being unable to trace non-signed modules loaded within a kernel supporting module signature. This is caused by tracepoint.c:tracepoint_module_coming() refusing to take into account tracepoints sitting within force-loaded modules (TAINT_FORCED_MODULE). The reason for this check, in the first place, is that a force-loaded module may have a struct module incompatible with the layout expected by the kernel, and can thus cause a kernel crash upon forced load of that module on a kernel with CONFIG_TRACEPOINTS=y. Tracepoints, however, specifically accept TAINT_OOT_MODULE and TAINT_CRAP, since those modules do not lead to the "very likely system crash" issue cited above for force-loaded modules. With kernels having CONFIG_MODULE_SIG=y (signed modules), a non-signed module is tainted re-using the TAINT_FORCED_MODULE taint flag. Unfortunately, this means that Tracepoints treat that module as a force-loaded module, and thus silently refuse to consider any tracepoint within this module. Since an unsigned module does not fit within the "very likely system crash" category of tainting, add a new TAINT_UNSIGNED_MODULE taint flag to specifically address this taint behavior, and accept those modules within Tracepoints. We use the letter 'X' as a taint flag character for a module being loaded that doesn't know how to sign its name (proposed by Steven Rostedt). Also add the missing 'O' entry to trace event show_module_flags() list for the sake of completeness. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> NAKed-by: Ingo Molnar <mingo@redhat.com> CC: Thomas Gleixner <tglx@linutronix.de> CC: David Howells <dhowells@redhat.com> CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> |
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Mark Brown
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a4b12990b6 | Merge remote-tracking branches 'asoc/topic/ml26124', 'asoc/topic/of', 'asoc/topic/omap', 'asoc/topic/pxa' and 'asoc/topic/rcar' into asoc-next | |
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Mauro Carvalho Chehab
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c897df0e2d |
Linux 3.14-rc5
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Merge tag 'v3.14-rc5' into patchwork
Linux 3.14-rc5
* tag 'v3.14-rc5': (1117 commits)
Linux 3.14-rc5
drm/vmwgfx: avoid null pointer dereference at failure paths
drm/vmwgfx: Make sure backing mobs are cleared when allocated. Update driver date.
drm/vmwgfx: Remove some unused surface formats
MAINTAINERS: add maintainer entry for Armada DRM driver
arm64: Fix !CONFIG_SMP kernel build
arm64: mm: Add double logical invert to pte accessors
dm cache: fix truncation bug when mapping I/O to >2TB fast device
perf tools: Fix strict alias issue for find_first_bit
powerpc/powernv: Fix indirect XSCOM unmangling
powerpc/powernv: Fix opal_xscom_{read,write} prototype
powerpc/powernv: Refactor PHB diag-data dump
powerpc/powernv: Dump PHB diag-data immediately
powerpc: Increase stack redzone for 64-bit userspace to 512 bytes
powerpc/ftrace: bugfix for test_24bit_addr
powerpc/crashdump : Fix page frame number check in copy_oldmem_page
powerpc/le: Ensure that the 'stop-self' RTAS token is handled correctly
kvm, vmx: Really fix lazy FPU on nested guest
perf tools: fix BFD detection on opensuse
drm/radeon: enable speaker allocation setup on dce3.2
...
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Qu Wenruo
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52483bc26f |
btrfs: Add ftrace for btrfs_workqueue
Add ftrace for btrfs_workqueue for further workqueue tunning. This patch needs to applied after the workqueue replace patchset. Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: Josef Bacik <jbacik@fb.com> |
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Linus Torvalds
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fe9ea91cde |
NFS client bugfixes for Linux 3.14
Highlights include: - Fix another nfs4_sequence corruptor in RELEASE_LOCKOWNER - Fix an Oopsable delegation callback race - Fix another bad stateid infinite loop - Fail the data server I/O is the stateid represents a lost lock - Fix an Oopsable sunrpc trace event -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJTHJSVAAoJEGcL54qWCgDyVRkP/2t43gjMF6P+Yc7VUW2e5uTv rHhPGFLuDVs9oS3WUYegzvThZMs//ovTaYgUSDNpOYztEB6P8bDRm41q/VgUIixY zWFoEplDgAZZE7gP2EJuXJv3bEdhJqXuCG2KUysqMsaIGlahrlQdHmqGTz6Y931o WROyMWVvnL4IoEtQHVR7DwyqkvSmifPJ8MZZv3Liy82wuw1fCsh8uy8mkYYSbdvN OK4JmHqdJ+CbAZ0WmE4Xe3Itqy/aIMBL9Jyrq4Zl1QX0p7ez3Xpy4XwmtlZXn2KP bKMfK2vP9RggagIpjUL+dhCqxlsyjlF6EzTnQRe7jXqlJ/vJ9pQF8X294jwRysfp 80jDqsTSND4JQiZuBISID23N1nL0TzrP2tWqipR9zx5JJMRVzYZWTzEq4w2uAHgg aW2vTdRNRLZWydlfFNQ8FiuEPIFoQaJFmOCQisec2LtfffLZZBz7JPofjNH9CgU8 mcbPhv75m2imXDOylydiVoD4x/myCGheYw2hpqhb1ZeuQxdN9lnwa0JzjPiP1h38 XIYwzM7TE8WayrdkMDCeIem1dz/VexknfKmXmFXlMfn3GRKxowCSrggxKG92k0eP L35cJj91a9AoxMz/ej0erv0iI1flLeoYP9aJzIRtZf+SB1BZkKhmWlFRQKqnlIOA BzjYui4mUoEQEa5Sk7Th =JfQx -----END PGP SIGNATURE----- Merge tag 'nfs-for-3.14-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs Pull NFS client bugfixes from Trond Myklebust: "Highlights include: - Fix another nfs4_sequence corruptor in RELEASE_LOCKOWNER - Fix an Oopsable delegation callback race - Fix another bad stateid infinite loop - Fail the data server I/O is the stateid represents a lost lock - Fix an Oopsable sunrpc trace event" * tag 'nfs-for-3.14-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: SUNRPC: Fix oops when trace sunrpc_task events in nfs client NFSv4: Fail the truncate() if the lock/open stateid is invalid NFSv4.1 Fail data server I/O if stateid represents a lost lock NFSv4: Fix the return value of nfs4_select_rw_stateid NFSv4: nfs4_stateid_is_current should return 'true' for an invalid stateid NFS: Fix a delegation callback race NFSv4: Fix another nfs4_sequence corruptor |
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Ditang Chen
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2ca310fc41 |
SUNRPC: Fix oops when trace sunrpc_task events in nfs client
When tracking sunrpc_task events in nfs client, the clnt pointer may be NULL. [ 139.269266] BUG: unable to handle kernel NULL pointer dereference at 0000000000000004 [ 139.269915] IP: [<ffffffffa026f216>] ftrace_raw_event_rpc_task_running+0x86/0xf0 [sunrpc] [ 139.269915] PGD 1d293067 PUD 1d294067 PMD 0 [ 139.269915] Oops: 0000 [#1] SMP [ 139.269915] Modules linked in: nfsv4 dns_resolver nfs lockd sunrpc fscache sg ppdev e1000 serio_raw pcspkr parport_pc parport i2c_piix4 i2c_core microcode xfs libcrc32c sd_mod sr_mod cdrom ata_generic crc_t10dif crct10dif_common pata_acpi ahci libahci ata_piix libata dm_mirror dm_region_hash dm_log dm_mod [ 139.269915] CPU: 0 PID: 59 Comm: kworker/0:2 Not tainted 3.10.0-84.el7.x86_64 #1 [ 139.269915] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [ 139.269915] Workqueue: rpciod rpc_async_schedule [sunrpc] [ 139.269915] task: ffff88001b598000 ti: ffff88001b632000 task.ti: ffff88001b632000 [ 139.269915] RIP: 0010:[<ffffffffa026f216>] [<ffffffffa026f216>] ftrace_raw_event_rpc_task_running+0x86/0xf0 [sunrpc] [ 139.269915] RSP: 0018:ffff88001b633d70 EFLAGS: 00010206 [ 139.269915] RAX: ffff88001dfc5338 RBX: ffff88001cc37a00 RCX: ffff88001dfc5334 [ 139.269915] RDX: ffff88001dfc5338 RSI: 0000000000000000 RDI: ffff88001dfc533c [ 139.269915] RBP: ffff88001b633db0 R08: 000000000000002c R09: 000000000000000a [ 139.269915] R10: 0000000000062180 R11: 00000020759fb9dc R12: ffffffffa0292c20 [ 139.269915] R13: ffff88001dfc5334 R14: 0000000000000000 R15: 0000000000000000 [ 139.269915] FS: 0000000000000000(0000) GS:ffff88001fc00000(0000) knlGS:0000000000000000 [ 139.269915] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 139.269915] CR2: 0000000000000004 CR3: 000000001d290000 CR4: 00000000000006f0 [ 139.269915] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 139.269915] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 139.269915] Stack: [ 139.269915] 000000001b633d98 0000000000000246 ffff88001df1dc00 ffff88001cc37a00 [ 139.269915] ffff88001bc35e60 0000000000000000 ffff88001ffa0a48 ffff88001bc35ee0 [ 139.269915] ffff88001b633e08 ffffffffa02704b5 0000000000010000 ffff88001cc37a70 [ 139.269915] Call Trace: [ 139.269915] [<ffffffffa02704b5>] __rpc_execute+0x1d5/0x400 [sunrpc] [ 139.269915] [<ffffffffa0270706>] rpc_async_schedule+0x26/0x30 [sunrpc] [ 139.269915] [<ffffffff8107867b>] process_one_work+0x17b/0x460 [ 139.269915] [<ffffffff8107942b>] worker_thread+0x11b/0x400 [ 139.269915] [<ffffffff81079310>] ? rescuer_thread+0x3e0/0x3e0 [ 139.269915] [<ffffffff8107fc80>] kthread+0xc0/0xd0 [ 139.269915] [<ffffffff8107fbc0>] ? kthread_create_on_node+0x110/0x110 [ 139.269915] [<ffffffff815d122c>] ret_from_fork+0x7c/0xb0 [ 139.269915] [<ffffffff8107fbc0>] ? kthread_create_on_node+0x110/0x110 [ 139.269915] Code: 4c 8b 45 c8 48 8d 7d d0 89 4d c4 41 89 c9 b9 28 00 00 00 e8 9d b4 e9 e0 48 85 c0 49 89 c5 74 a2 48 89 c7 e8 9d 3f e9 e0 48 89 c2 <41> 8b 46 04 48 8b 7d d0 4c 89 e9 4c 89 e6 89 42 0c 0f b7 83 d4 [ 139.269915] RIP [<ffffffffa026f216>] ftrace_raw_event_rpc_task_running+0x86/0xf0 [sunrpc] [ 139.269915] RSP <ffff88001b633d70> [ 139.269915] CR2: 0000000000000004 [ 140.946406] ---[ end trace ba486328b98d7622 ]--- Signed-off-by: Ditang Chen <chendt.fnst@cn.fujitsu.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> |
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Filipe Brandenburger
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114e7b52de |
tracing: Evaluate len expression only once in __dynamic_array macro
Use a temporary variable to store the expansion of the len expression. If the evaluation is expensive, this commit will ensure it is evaluated only once inside ftrace_get_offsets_<call>. Link: http://lkml.kernel.org/r/1393651938-16418-3-git-send-email-filbranden@google.com Signed-off-by: Filipe Brandenburger <filbranden@google.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
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Filipe Brandenburger
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5859fa1a14 |
tracing: Correctly expand len expressions from __dynamic_array macro
This fixes expansion of the len argument in __dynamic_array macros.
The previous code from commit
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Steven Rostedt (Red Hat)
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8643e92b52 |
tracing: Fix event header migrate.h to include tracepoint.h
The trace event headers are required to include tracepoint.h. The only reason
they worked now is because module.h included tracepoint.h, and that will soon
change.
Link: http://lkml.kernel.org/r/20140226190644.591040764@goodmis.org
Fixes:
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Steven Rostedt (Red Hat)
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f479447ad9 |
tracing: Fix event header writeback.h to include tracepoint.h
The trace event headers are required to include tracepoint.h. The only reason
they worked now is because module.h included tracepoint.h, and that will soon
change.
Link: http://lkml.kernel.org/r/20140226190644.442886305@goodmis.org
Fixes:
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Steven Rostedt
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3fd40d1ee6 |
tracing: Use helper functions in event assignment to shrink macro size
The functions that assign the contents for the ftrace events are defined by the TRACE_EVENT() macros. Each event has its own unique way to assign data to its buffer. When you have over 500 events, that means there's 500 functions assigning data uniquely for each event (not really that many, as DECLARE_EVENT_CLASS() and multiple DEFINE_EVENT()s will only need a single function). By making helper functions in the core kernel to do some of the work instead, we can shrink the size of the kernel down a bit. With a kernel configured with 502 events, the change in size was: text data bss dec hex filename 12987390 1913504 9785344 24686238 178ae9e /tmp/vmlinux 12959102 1913504 9785344 24657950 178401e /tmp/vmlinux.patched That's a total of 28288 bytes, which comes down to 56 bytes per event. Link: http://lkml.kernel.org/r/20120810034708.370808175@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
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Steven Rostedt
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35bb4399bd |
tracing: Move event storage for array from macro to standalone function
The code that shows array fields for events is defined for all events. This can add up quite a bit when you have over 500 events. By making helper functions in the core kernel to do the work instead, we can shrink the size of the kernel down a bit. With a kernel configured with 502 events, the change in size was: text data bss dec hex filename 12990946 1913568 9785344 24689858 178bcc2 /tmp/vmlinux 12987390 1913504 9785344 24686238 178ae9e /tmp/vmlinux.patched That's a total of 3556 bytes, which comes down to 7 bytes per event. Although it's not much, this code is just called at initialization of the events. Link: http://lkml.kernel.org/r/20120810034708.084036335@goodmis.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
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Steven Rostedt
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1d6bae966e |
tracing: Move raw output code from macro to standalone function
The code for trace events to format the raw recorded event data
into human readable format in the 'trace' file is repeated for every
event in the system. When you have over 500 events, this can add up
quite a bit.
By making helper functions in the core kernel to do the work
instead, we can shrink the size of the kernel down a bit.
With a kernel configured with 502 events, the change in size was:
text data bss dec hex filename
12991007 1913568 9785344 24689919 178bcff /tmp/vmlinux.orig
12990946 1913568 9785344 24689858 178bcc2 /tmp/vmlinux.patched
Note, this version does not save as much as the version of this patch
I had a few years ago. That is because in the mean time, commit
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Roman Pen
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af5040da01 |
blktrace: fix accounting of partially completed requests
trace_block_rq_complete does not take into account that request can be partially completed, so we can get the following incorrect output of blkparser: C R 232 + 240 [0] C R 240 + 232 [0] C R 248 + 224 [0] C R 256 + 216 [0] but should be: C R 232 + 8 [0] C R 240 + 8 [0] C R 248 + 8 [0] C R 256 + 8 [0] Also, the whole output summary statistics of completed requests and final throughput will be incorrect. This patch takes into account real completion size of the request and fixes wrong completion accounting. Signed-off-by: Roman Pen <r.peniaev@gmail.com> CC: Steven Rostedt <rostedt@goodmis.org> CC: Frederic Weisbecker <fweisbec@gmail.com> CC: Ingo Molnar <mingo@redhat.com> CC: linux-kernel@vger.kernel.org Cc: stable@kernel.org Signed-off-by: Jens Axboe <axboe@fb.com> |
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Antti Palosaari
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6f3073b8dc |
[media] v4l: add stream format for SDR receiver
Add new V4L2 stream format definition, V4L2_BUF_TYPE_SDR_CAPTURE, for SDR receiver. Signed-off-by: Antti Palosaari <crope@iki.fi> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com> |
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Namjae Jeon
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9eb79482a9 |
ext4: Add support FALLOC_FL_COLLAPSE_RANGE for fallocate
This patch implements fallocate's FALLOC_FL_COLLAPSE_RANGE for Ext4. The semantics of this flag are following: 1) It collapses the range lying between offset and length by removing any data blocks which are present in this range and than updates all the logical offsets of extents beyond "offset + len" to nullify the hole created by removing blocks. In short, it does not leave a hole. 2) It should be used exclusively. No other fallocate flag in combination. 3) Offset and length supplied to fallocate should be fs block size aligned in case of xfs and ext4. 4) Collaspe range does not work beyond i_size. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Ashish Sangwan <a.sangwan@samsung.com> Tested-by: Dongsu Park <dongsu.park@profitbricks.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> |
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Lukas Czerner
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a633f5a319 |
ext4: translate fallocate mode bits to strings
Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> |
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Jan Kara
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0dc83bd30b |
Revert "writeback: do not sync data dirtied after sync start"
This reverts commit
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Dirk Brandewie
|
709c078e17 |
intel_pstate: Remove energy reporting from pstate_sample tracepoint
Remove the reporting of energy since it does not provide any useful
information about the state of the driver and will be a maintainance
headache going forward since the RAPL energy units register is not
architectural and subject to change between micro-architectures
References: https://bugzilla.kernel.org/show_bug.cgi?id=69831
Fixes:
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Rafael J. Wysocki
|
b02f6695f7 |
PM / QoS: Rename device resume latency QoS items
Rename symbols, variables, functions and structure fields related do the resume latency device PM QoS type so that it is clear where they belong (in particular, to avoid confusion with the latency tolerance device PM QoS type introduced by a subsequent changeset). Update the PM QoS documentation to better reflect its current state. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Linus Torvalds
|
b399c46ea0 |
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab: - a new jpeg codec driver for Samsung Exynos (jpeg-hw-exynos4) - a new dvb frontend for ds2103 chipset (m88ds2103) - a new sensor driver for Samsung S5K5BAF UXGA (s5k5baf) - new drivers for R-Car VSP1 - a new radio driver: radio-raremono - a new tuner driver for ts2022 chipset (m88ts2022) - the analog part of em28xx is now a separate module that only load/runs if the device is not a pure digital TV device - added a staging driver for bcm2048 radio devices - the omap 2 video driver (omap24xx) was moved to staging. This driver is for an old hardware and uses a deprecated Kernel internal API. If nobody cares enough to fix it, it would be removed on a couple Kernel releases - the sn9c102 driver was moved to staging. This driver was replaced by gspca, and disabled on some distros, as almost all devices are known to work properly with gspca. It should be removed from kernel on a couple Kernel releases - lots of driver fixes, improvements and cleanups * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (421 commits) [media] media: v4l2-dev: fix video device index assignment [media] rc-core: reuse device numbers [media] em28xx-cards: properly initialize the device bitmap [media] Staging: media: Fix line length exceeding 80 characters in as102_drv.c [media] Staging: media: Fix line length exceeding 80 characters in as102_fe.c [media] Staging: media: Fix quoted string split across line in as102_fe.c [media] media: st-rc: Add reset support [media] m2m-deinterlace: fix allocated struct type [media] radio-usb-si4713: fix sparse non static symbol warnings [media] em28xx-audio: remove needless check before usb_free_coherent() [media] au0828: Fix sparse non static symbol warning Revert "[media] go7007-usb: only use go->dev after allocated" [media] em28xx-audio: provide an error code when URB submit fails [media] em28xx: fix check for audio only usb interfaces when changing the usb alternate setting [media] em28xx: fix usb alternate setting for analog and digital video endpoints > 0 [media] em28xx: make 'em28xx_ctrl_ops' static em28xx-alsa: Fix error patch for init/fini [media] em28xx-audio: flush work at .fini [media] drxk: remove the option to load firmware asynchronously [media] em28xx: adjust period size at runtime ... |
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Linus Torvalds
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e7651b819e |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs updates from Chris Mason: "This is a pretty big pull, and most of these changes have been floating in btrfs-next for a long time. Filipe's properties work is a cool building block for inheriting attributes like compression down on a per inode basis. Jeff Mahoney kicked in code to export filesystem info into sysfs. Otherwise, lots of performance improvements, cleanups and bug fixes. Looks like there are still a few other small pending incrementals, but I wanted to get the bulk of this in first" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (149 commits) Btrfs: fix spin_unlock in check_ref_cleanup Btrfs: setup inode location during btrfs_init_inode_locked Btrfs: don't use ram_bytes for uncompressed inline items Btrfs: fix btrfs_search_slot_for_read backwards iteration Btrfs: do not export ulist functions Btrfs: rework ulist with list+rb_tree Btrfs: fix memory leaks on walking backrefs failure Btrfs: fix send file hole detection leading to data corruption Btrfs: add a reschedule point in btrfs_find_all_roots() Btrfs: make send's file extent item search more efficient Btrfs: fix to catch all errors when resolving indirect ref Btrfs: fix protection between walking backrefs and root deletion btrfs: fix warning while merging two adjacent extents Btrfs: fix infinite path build loops in incremental send btrfs: undo sysfs when open_ctree() fails Btrfs: fix snprintf usage by send's gen_unique_name btrfs: fix defrag 32-bit integer overflow btrfs: sysfs: list the NO_HOLES feature btrfs: sysfs: don't show reserved incompat feature btrfs: call permission checks earlier in ioctls and return EPERM ... |
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Linus Torvalds
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53d8ab29f8 |
Merge branch 'for-3.14/drivers' of git://git.kernel.dk/linux-block
Pull block IO driver changes from Jens Axboe: - bcache update from Kent Overstreet. - two bcache fixes from Nicholas Swenson. - cciss pci init error fix from Andrew. - underflow fix in the parallel IDE pg_write code from Dan Carpenter. I'm sure the 1 (or 0) users of that are now happy. - two PCI related fixes for sx8 from Jingoo Han. - floppy init fix for first block read from Jiri Kosina. - pktcdvd error return miss fix from Julia Lawall. - removal of IRQF_SHARED from the SEGA Dreamcast CD-ROM code from Michael Opdenacker. - comment typo fix for the loop driver from Olaf Hering. - potential oops fix for null_blk from Raghavendra K T. - two fixes from Sam Bradshaw (Micron) for the mtip32xx driver, fixing an OOM problem and a problem with handling security locked conditions * 'for-3.14/drivers' of git://git.kernel.dk/linux-block: (47 commits) mg_disk: Spelling s/finised/finished/ null_blk: Null pointer deference problem in alloc_page_buffers mtip32xx: Correctly handle security locked condition mtip32xx: Make SGL container per-command to eliminate high order dma allocation drivers/block/loop.c: fix comment typo in loop_config_discard drivers/block/cciss.c:cciss_init_one(): use proper errnos drivers/block/paride/pg.c: underflow bug in pg_write() drivers/block/sx8.c: remove unnecessary pci_set_drvdata() drivers/block/sx8.c: use module_pci_driver() floppy: bail out in open() if drive is not responding to block0 read bcache: Fix auxiliary search trees for key size > cacheline size bcache: Don't return -EINTR when insert finished bcache: Improve bucket_prio() calculation bcache: Add bch_bkey_equal_header() bcache: update bch_bkey_try_merge bcache: Move insert_fixup() to btree_keys_ops bcache: Convert sorting to btree_keys bcache: Convert debug code to btree_keys bcache: Convert btree_iter to struct btree_keys bcache: Refactor bset_tree sysfs stats ... |
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Linus Torvalds
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f568849eda |
Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block
Pull core block IO changes from Jens Axboe:
"The major piece in here is the immutable bio_ve series from Kent, the
rest is fairly minor. It was supposed to go in last round, but
various issues pushed it to this release instead. The pull request
contains:
- Various smaller blk-mq fixes from different folks. Nothing major
here, just minor fixes and cleanups.
- Fix for a memory leak in the error path in the block ioctl code
from Christian Engelmayer.
- Header export fix from CaiZhiyong.
- Finally the immutable biovec changes from Kent Overstreet. This
enables some nice future work on making arbitrarily sized bios
possible, and splitting more efficient. Related fixes to immutable
bio_vecs:
- dm-cache immutable fixup from Mike Snitzer.
- btrfs immutable fixup from Muthu Kumar.
- bio-integrity fix from Nic Bellinger, which is also going to stable"
* 'for-3.14/core' of git://git.kernel.dk/linux-block: (44 commits)
xtensa: fixup simdisk driver to work with immutable bio_vecs
block/blk-mq-cpu.c: use hotcpu_notifier()
blk-mq: for_each_* macro correctness
block: Fix memory leak in rw_copy_check_uvector() handling
bio-integrity: Fix bio_integrity_verify segment start bug
block: remove unrelated header files and export symbol
blk-mq: uses page->list incorrectly
blk-mq: use __smp_call_function_single directly
btrfs: fix missing increment of bi_remaining
Revert "block: Warn and free bio if bi_end_io is not set"
block: Warn and free bio if bi_end_io is not set
blk-mq: fix initializing request's start time
block: blk-mq: don't export blk_mq_free_queue()
block: blk-mq: make blk_sync_queue support mq
block: blk-mq: support draining mq queue
dm cache: increment bi_remaining when bi_end_io is restored
block: fixup for generic bio chaining
block: Really silence spurious compiler warnings
block: Silence spurious compiler warnings
block: Kill bio_pair_split()
...
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Liu Bo
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792ddef040 |
Btrfs/tracepoint: update new flags for ordered extent TP
Flag BTRFS_ORDERED_TRUNCATED is a new one, update the tracepoint to support it. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com> |
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Liu Bo
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9d04a8ceac |
Btrfs/tracepoint: fix to report right flags for ordered extent
We use set_bit() to assign ordered extent's flags, but in the related tracepoint we don't do the same thing, which makes the trace output not to parse flags correctly. Also, since the flags are bits stuff, we change to use __print_flags with a 'delim' instead of __print_symbolic. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <clm@fb.com> |
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Linus Torvalds
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2b2b15c32a |
NFS client updates for Linux 3.14
Highlights include:
- Stable fix for an infinite loop in RPC state machine
- Stable fix for a use after free situation in the NFSv4 trunking discovery
- Stable fix for error handling in the NFSv4 trunking discovery
- Stable fix for the page write update code
- Stable fix for the NFSv4.1 mount time security negotiation
- Stable fix for the NFSv4 open code.
- O_DIRECT locking fixes
- fix an Oops in the pnfs file commit code
- RPC layer needs finer grained handling of connection errors
- More RPC GSS upcall fixes
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Merge tag 'nfs-for-3.14-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Highlights include:
- stable fix for an infinite loop in RPC state machine
- stable fix for a use after free situation in the NFSv4 trunking discovery
- stable fix for error handling in the NFSv4 trunking discovery
- stable fix for the page write update code
- stable fix for the NFSv4.1 mount time security negotiation
- stable fix for the NFSv4 open code.
- O_DIRECT locking fixes
- fix an Oops in the pnfs file commit code
- RPC layer needs finer grained handling of connection errors
- more RPC GSS upcall fixes"
* tag 'nfs-for-3.14-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (30 commits)
pnfs: Proper delay for NFS4ERR_RECALLCONFLICT in layout_get_done
pnfs: fix BUG in filelayout_recover_commit_reqs
nfs4: fix discover_server_trunking use after free
NFSv4.1: Handle errors correctly in nfs41_walk_client_list
nfs: always make sure page is up-to-date before extending a write to cover the entire page
nfs: page cache invalidation for dio
nfs: take i_mutex during direct I/O reads
nfs: merge nfs_direct_write into nfs_file_direct_write
nfs: merge nfs_direct_read into nfs_file_direct_read
nfs: increment i_dio_count for reads, too
nfs: defer inode_dio_done call until size update is done
nfs: fix size updates for aio writes
nfs4.1: properly handle ENOTSUP in SECINFO_NO_NAME
NFSv4.1: Fix a race in nfs4_write_inode
NFSv4.1: Don't trust attributes if a pNFS LAYOUTCOMMIT is outstanding
point to the right include file in a comment (left over from
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Linus Torvalds
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4ba9920e5e |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
1) BPF debugger and asm tool by Daniel Borkmann.
2) Speed up create/bind in AF_PACKET, also from Daniel Borkmann.
3) Correct reciprocal_divide and update users, from Hannes Frederic
Sowa and Daniel Borkmann.
4) Currently we only have a "set" operation for the hw timestamp socket
ioctl, add a "get" operation to match. From Ben Hutchings.
5) Add better trace events for debugging driver datapath problems, also
from Ben Hutchings.
6) Implement auto corking in TCP, from Eric Dumazet. Basically, if we
have a small send and a previous packet is already in the qdisc or
device queue, defer until TX completion or we get more data.
7) Allow userspace to manage ipv6 temporary addresses, from Jiri Pirko.
8) Add a qdisc bypass option for AF_PACKET sockets, from Daniel
Borkmann.
9) Share IP header compression code between Bluetooth and IEEE802154
layers, from Jukka Rissanen.
10) Fix ipv6 router reachability probing, from Jiri Benc.
11) Allow packets to be captured on macvtap devices, from Vlad Yasevich.
12) Support tunneling in GRO layer, from Jerry Chu.
13) Allow bonding to be configured fully using netlink, from Scott
Feldman.
14) Allow AF_PACKET users to obtain the VLAN TPID, just like they can
already get the TCI. From Atzm Watanabe.
15) New "Heavy Hitter" qdisc, from Terry Lam.
16) Significantly improve the IPSEC support in pktgen, from Fan Du.
17) Allow ipv4 tunnels to cache routes, just like sockets. From Tom
Herbert.
18) Add Proportional Integral Enhanced packet scheduler, from Vijay
Subramanian.
19) Allow openvswitch to mmap'd netlink, from Thomas Graf.
20) Key TCP metrics blobs also by source address, not just destination
address. From Christoph Paasch.
21) Support 10G in generic phylib. From Andy Fleming.
22) Try to short-circuit GRO flow compares using device provided RX
hash, if provided. From Tom Herbert.
The wireless and netfilter folks have been busy little bees too.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2064 commits)
net/cxgb4: Fix referencing freed adapter
ipv6: reallocate addrconf router for ipv6 address when lo device up
fib_frontend: fix possible NULL pointer dereference
rtnetlink: remove IFLA_BOND_SLAVE definition
rtnetlink: remove check for fill_slave_info in rtnl_have_link_slave_info
qlcnic: update version to 5.3.55
qlcnic: Enhance logic to calculate msix vectors.
qlcnic: Refactor interrupt coalescing code for all adapters.
qlcnic: Update poll controller code path
qlcnic: Interrupt code cleanup
qlcnic: Enhance Tx timeout debugging.
qlcnic: Use bool for rx_mac_learn.
bonding: fix u64 division
rtnetlink: add missing IFLA_BOND_AD_INFO_UNSPEC
sfc: Use the correct maximum TX DMA ring size for SFC9100
Add Shradha Shah as the sfc driver maintainer.
net/vxlan: Share RX skb de-marking and checksum checks with ovs
tulip: cleanup by using ARRAY_SIZE()
ip_tunnel: clear IPCB in ip_tunnel_xmit() in case dst_link_failure() is called
net/cxgb4: Don't retrieve stats during recovery
...
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Linus Torvalds
|
09da8dfa98 |
ACPI and power management updates for 3.14-rc1
- ACPI core changes to make it create a struct acpi_device object for every
device represented in the ACPI tables during all namespace scans regardless
of the current status of that device. In accordance with this, ACPI hotplug
operations will not delete those objects, unless the underlying ACPI tables
go away.
- On top of the above, new sysfs attribute for ACPI device objects allowing
user space to check device status by triggering the execution of _STA for
its ACPI object. From Srinivas Pandruvada.
- ACPI core hotplug changes reducing code duplication, integrating the
PCI root hotplug with the core and reworking container hotplug.
- ACPI core simplifications making it use ACPI_COMPANION() in the code
"glueing" ACPI device objects to "physical" devices.
- ACPICA update to upstream version 20131218. This adds support for the
DBG2 and PCCT tables to ACPICA, fixes some bugs and improves debug
facilities. From Bob Moore, Lv Zheng and Betty Dall.
- Init code change to carry out the early ACPI initialization earlier.
That should allow us to use ACPI during the timekeeping initialization
and possibly to simplify the EFI initialization too. From Chun-Yi Lee.
- Clenups of the inclusions of ACPI headers in many places all over from
Lv Zheng and Rashika Kheria (work in progress).
- New helper for ACPI _DSM execution and rework of the code in drivers
that uses _DSM to execute it via the new helper. From Jiang Liu.
- New Win8 OSI blacklist entries from Takashi Iwai.
- Assorted ACPI fixes and cleanups from Al Stone, Emil Goode, Hanjun Guo,
Lan Tianyu, Masanari Iida, Oliver Neukum, Prarit Bhargava, Rashika Kheria,
Tang Chen, Zhang Rui.
- intel_pstate driver updates, including proper Baytrail support, from
Dirk Brandewie and intel_pstate documentation from Ramkumar Ramachandra.
- Generic CPU boost ("turbo") support for cpufreq from Lukasz Majewski.
- powernow-k6 cpufreq driver fixes from Mikulas Patocka.
- cpufreq core fixes and cleanups from Viresh Kumar, Jane Li, Mark Brown.
- Assorted cpufreq drivers fixes and cleanups from Anson Huang, John Tobias,
Paul Bolle, Paul Walmsley, Sachin Kamat, Shawn Guo, Viresh Kumar.
- cpuidle cleanups from Bartlomiej Zolnierkiewicz.
- Support for hibernation APM events from Bin Shi.
- Hibernation fix to avoid bringing up nonboot CPUs with ACPI EC disabled
during thaw transitions from Bjørn Mork.
- PM core fixes and cleanups from Ben Dooks, Leonardo Potenza, Ulf Hansson.
- PNP subsystem fixes and cleanups from Dmitry Torokhov, Levente Kurusa,
Rashika Kheria.
- New tool for profiling system suspend from Todd E Brandt and a cpupower
tool cleanup from One Thousand Gnomes.
/
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Merge tag 'pm+acpi-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael Wysocki:
"As far as the number of commits goes, the top spot belongs to ACPI
this time with cpufreq in the second position and a handful of PM
core, PNP and cpuidle updates. They are fixes and cleanups mostly, as
usual, with a couple of new features in the mix.
The most visible change is probably that we will create struct
acpi_device objects (visible in sysfs) for all devices represented in
the ACPI tables regardless of their status and there will be a new
sysfs attribute under those objects allowing user space to check that
status via _STA.
Consequently, ACPI device eject or generally hot-removal will not
delete those objects, unless the table containing the corresponding
namespace nodes is unloaded, which is extremely rare. Also ACPI
container hotplug will be handled quite a bit differently and cpufreq
will support CPU boost ("turbo") generically and not only in the
acpi-cpufreq driver.
Specifics:
- ACPI core changes to make it create a struct acpi_device object for
every device represented in the ACPI tables during all namespace
scans regardless of the current status of that device. In
accordance with this, ACPI hotplug operations will not delete those
objects, unless the underlying ACPI tables go away.
- On top of the above, new sysfs attribute for ACPI device objects
allowing user space to check device status by triggering the
execution of _STA for its ACPI object. From Srinivas Pandruvada.
- ACPI core hotplug changes reducing code duplication, integrating
the PCI root hotplug with the core and reworking container hotplug.
- ACPI core simplifications making it use ACPI_COMPANION() in the
code "glueing" ACPI device objects to "physical" devices.
- ACPICA update to upstream version 20131218. This adds support for
the DBG2 and PCCT tables to ACPICA, fixes some bugs and improves
debug facilities. From Bob Moore, Lv Zheng and Betty Dall.
- Init code change to carry out the early ACPI initialization
earlier. That should allow us to use ACPI during the timekeeping
initialization and possibly to simplify the EFI initialization too.
From Chun-Yi Lee.
- Clenups of the inclusions of ACPI headers in many places all over
from Lv Zheng and Rashika Kheria (work in progress).
- New helper for ACPI _DSM execution and rework of the code in
drivers that uses _DSM to execute it via the new helper. From
Jiang Liu.
- New Win8 OSI blacklist entries from Takashi Iwai.
- Assorted ACPI fixes and cleanups from Al Stone, Emil Goode, Hanjun
Guo, Lan Tianyu, Masanari Iida, Oliver Neukum, Prarit Bhargava,
Rashika Kheria, Tang Chen, Zhang Rui.
- intel_pstate driver updates, including proper Baytrail support,
from Dirk Brandewie and intel_pstate documentation from Ramkumar
Ramachandra.
- Generic CPU boost ("turbo") support for cpufreq from Lukasz
Majewski.
- powernow-k6 cpufreq driver fixes from Mikulas Patocka.
- cpufreq core fixes and cleanups from Viresh Kumar, Jane Li, Mark
Brown.
- Assorted cpufreq drivers fixes and cleanups from Anson Huang, John
Tobias, Paul Bolle, Paul Walmsley, Sachin Kamat, Shawn Guo, Viresh
Kumar.
- cpuidle cleanups from Bartlomiej Zolnierkiewicz.
- Support for hibernation APM events from Bin Shi.
- Hibernation fix to avoid bringing up nonboot CPUs with ACPI EC
disabled during thaw transitions from Bjørn Mork.
- PM core fixes and cleanups from Ben Dooks, Leonardo Potenza, Ulf
Hansson.
- PNP subsystem fixes and cleanups from Dmitry Torokhov, Levente
Kurusa, Rashika Kheria.
- New tool for profiling system suspend from Todd E Brandt and a
cpupower tool cleanup from One Thousand Gnomes"
* tag 'pm+acpi-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (153 commits)
thermal: exynos: boost: Automatic enable/disable of BOOST feature (at Exynos4412)
cpufreq: exynos4x12: Change L0 driver data to CPUFREQ_BOOST_FREQ
Documentation: cpufreq / boost: Update BOOST documentation
cpufreq: exynos: Extend Exynos cpufreq driver to support boost
cpufreq / boost: Kconfig: Support for software-managed BOOST
acpi-cpufreq: Adjust the code to use the common boost attribute
cpufreq: Add boost frequency support in core
intel_pstate: Add trace point to report internal state.
cpufreq: introduce cpufreq_generic_get() routine
ARM: SA1100: Create dummy clk_get_rate() to avoid build failures
cpufreq: stats: create sysfs entries when cpufreq_stats is a module
cpufreq: stats: free table and remove sysfs entry in a single routine
cpufreq: stats: remove hotplug notifiers
cpufreq: stats: handle cpufreq_unregister_driver() and suspend/resume properly
cpufreq: speedstep: remove unused speedstep_get_state
platform: introduce OF style 'modalias' support for platform bus
PM / tools: new tool for suspend/resume performance optimization
ACPI: fix module autoloading for ACPI enumerated devices
ACPI: add module autoloading support for ACPI enumerated devices
ACPI: fix create_modalias() return value handling
...
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Linus Torvalds
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0d90d63872 |
f2fs updates for v3.14
This patch-set includes the following major enhancement patches.
o support inline_data
o refactor bio operations such as merge operations and rw type assignment
o enhance the direct IO path
o enhance bio operations
o truncate a node page when it becomes obsolete
o add sysfs entries: small_discards, max_victim_search, and in-place-update
o add a sysfs entry to control max_victim_search
The other bug fixes are as follows.
o fix a bug in truncate_partial_nodes
o avoid warnings during sparse and build process
o fix error handling flows
o fix potential bit overflows
And, there are a bunch of cleanups.
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Merge tag 'for-f2fs-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this round, a couple of sysfs entries were introduced to tune the
f2fs at runtime.
In addition, f2fs starts to support inline_data and improves the
read/write performance in some workloads by refactoring bio-related
flows.
This patch-set includes the following major enhancement patches.
- support inline_data
- refactor bio operations such as merge operations and rw type
assignment
- enhance the direct IO path
- enhance bio operations
- truncate a node page when it becomes obsolete
- add sysfs entries: small_discards, max_victim_search, and
in-place-update
- add a sysfs entry to control max_victim_search
The other bug fixes are as follows.
- fix a bug in truncate_partial_nodes
- avoid warnings during sparse and build process
- fix error handling flows
- fix potential bit overflows
And, there are a bunch of cleanups"
* tag 'for-f2fs-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (95 commits)
f2fs: drop obsolete node page when it is truncated
f2fs: introduce NODE_MAPPING for code consistency
f2fs: remove the orphan block page array
f2fs: add help function META_MAPPING
f2fs: move a branch for code redability
f2fs: call mark_inode_dirty to flush dirty pages
f2fs: clean checkpatch warnings
f2fs: missing REQ_META and REQ_PRIO when sync_meta_pages(META_FLUSH)
f2fs: avoid f2fs_balance_fs call during pageout
f2fs: add delimiter to seperate name and value in debug phrase
f2fs: use spinlock rather than mutex for better speed
f2fs: move alloc new orphan node out of lock protection region
f2fs: move grabing orphan pages out of protection region
f2fs: remove the needless parameter of f2fs_wait_on_page_writeback
f2fs: update documents and a MAINTAINERS entry
f2fs: add a sysfs entry to control max_victim_search
f2fs: improve write performance under frequent fsync calls
f2fs: avoid to read inline data except first page
f2fs: avoid to left uninitialized data in page when read inline data
f2fs: fix truncate_partial_nodes bug
...
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Linus Torvalds
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60eaa0190f |
This pull request has a new feature to ftrace, namely the trace event
triggers by Tom Zanussi. A trigger is a way to enable an action when an
event is hit. The actions are:
o trace on/off - enable or disable tracing
o snapshot - save the current trace buffer in the snapshot
o stacktrace - dump the current stack trace to the ringbuffer
o enable/disable events - enable or disable another event
Namhyung Kim added updates to the tracing uprobes code. Having the
uprobes add support for fetch methods.
The rest are various bug fixes with the new code, and minor ones for
the old code.
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Merge tag 'trace-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
"This pull request has a new feature to ftrace, namely the trace event
triggers by Tom Zanussi. A trigger is a way to enable an action when
an event is hit. The actions are:
o trace on/off - enable or disable tracing
o snapshot - save the current trace buffer in the snapshot
o stacktrace - dump the current stack trace to the ringbuffer
o enable/disable events - enable or disable another event
Namhyung Kim added updates to the tracing uprobes code. Having the
uprobes add support for fetch methods.
The rest are various bug fixes with the new code, and minor ones for
the old code"
* tag 'trace-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (38 commits)
tracing: Fix buggered tee(2) on tracing_pipe
tracing: Have trace buffer point back to trace_array
ftrace: Fix synchronization location disabling and freeing ftrace_ops
ftrace: Have function graph only trace based on global_ops filters
ftrace: Synchronize setting function_trace_op with ftrace_trace_function
tracing: Show available event triggers when no trigger is set
tracing: Consolidate event trigger code
tracing: Fix counter for traceon/off event triggers
tracing: Remove double-underscore naming in syscall trigger invocations
tracing/kprobes: Add trace event trigger invocations
tracing/probes: Fix build break on !CONFIG_KPROBE_EVENT
tracing/uprobes: Add @+file_offset fetch method
uprobes: Allocate ->utask before handler_chain() for tracing handlers
tracing/uprobes: Add support for full argument access methods
tracing/uprobes: Fetch args before reserving a ring buffer
tracing/uprobes: Pass 'is_return' to traceprobe_parse_probe_arg()
tracing/probes: Implement 'memory' fetch method for uprobes
tracing/probes: Add fetch{,_size} member into deref fetch method
tracing/probes: Move 'symbol' fetch method to kprobes
tracing/probes: Implement 'stack' fetch method for uprobes
...
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Mel Gorman
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0eb927c0ab |
mm: compaction: trace compaction begin and end
The broad goal of the series is to improve allocation success rates for
huge pages through memory compaction, while trying not to increase the
compaction overhead. The original objective was to reintroduce
capturing of high-order pages freed by the compaction, before they are
split by concurrent activity. However, several bugs and opportunities
for simple improvements were found in the current implementation, mostly
through extra tracepoints (which are however too ugly for now to be
considered for sending).
The patches mostly deal with two mechanisms that reduce compaction
overhead, which is caching the progress of migrate and free scanners,
and marking pageblocks where isolation failed to be skipped during
further scans.
Patch 1 (from mgorman) adds tracepoints that allow calculate time spent in
compaction and potentially debug scanner pfn values.
Patch 2 encapsulates the some functionality for handling deferred compactions
for better maintainability, without a functional change
type is not determined without being actually needed.
Patch 3 fixes a bug where cached scanner pfn's are sometimes reset only after
they have been read to initialize a compaction run.
Patch 4 fixes a bug where scanners meeting is sometimes not properly detected
and can lead to multiple compaction attempts quitting early without
doing any work.
Patch 5 improves the chances of sync compaction to process pageblocks that
async compaction has skipped due to being !MIGRATE_MOVABLE.
Patch 6 improves the chances of sync direct compaction to actually do anything
when called after async compaction fails during allocation slowpath.
The impact of patches were validated using mmtests's stress-highalloc
benchmark with mmtests's stress-highalloc benchmark on a x86_64 machine
with 4GB memory.
Due to instability of the results (mostly related to the bugs fixed by
patches 2 and 3), 10 iterations were performed, taking min,mean,max
values for success rates and mean values for time and vmstat-based
metrics.
First, the default GFP_HIGHUSER_MOVABLE allocations were tested with the
patches stacked on top of v3.13-rc2. Patch 2 is OK to serve as baseline
due to no functional changes in 1 and 2. Comments below.
stress-highalloc
3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2
2-nothp 3-nothp 4-nothp 5-nothp 6-nothp
Success 1 Min 9.00 ( 0.00%) 10.00 (-11.11%) 43.00 (-377.78%) 43.00 (-377.78%) 33.00 (-266.67%)
Success 1 Mean 27.50 ( 0.00%) 25.30 ( 8.00%) 45.50 (-65.45%) 45.90 (-66.91%) 46.30 (-68.36%)
Success 1 Max 36.00 ( 0.00%) 36.00 ( 0.00%) 47.00 (-30.56%) 48.00 (-33.33%) 52.00 (-44.44%)
Success 2 Min 10.00 ( 0.00%) 8.00 ( 20.00%) 46.00 (-360.00%) 45.00 (-350.00%) 35.00 (-250.00%)
Success 2 Mean 26.40 ( 0.00%) 23.50 ( 10.98%) 47.30 (-79.17%) 47.60 (-80.30%) 48.10 (-82.20%)
Success 2 Max 34.00 ( 0.00%) 33.00 ( 2.94%) 48.00 (-41.18%) 50.00 (-47.06%) 54.00 (-58.82%)
Success 3 Min 65.00 ( 0.00%) 63.00 ( 3.08%) 85.00 (-30.77%) 84.00 (-29.23%) 85.00 (-30.77%)
Success 3 Mean 76.70 ( 0.00%) 70.50 ( 8.08%) 86.20 (-12.39%) 85.50 (-11.47%) 86.00 (-12.13%)
Success 3 Max 87.00 ( 0.00%) 86.00 ( 1.15%) 88.00 ( -1.15%) 87.00 ( 0.00%) 87.00 ( 0.00%)
3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2
2-nothp 3-nothp 4-nothp 5-nothp 6-nothp
User 6437.72 6459.76 5960.32 5974.55 6019.67
System 1049.65 1049.09 1029.32 1031.47 1032.31
Elapsed 1856.77 1874.48 1949.97 1994.22 1983.15
3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2
2-nothp 3-nothp 4-nothp 5-nothp 6-nothp
Minor Faults 253952267 254581900 250030122 250507333 250157829
Major Faults 420 407 506 530 530
Swap Ins 4 9 9 6 6
Swap Outs 398 375 345 346 333
Direct pages scanned 197538 189017 298574 287019 299063
Kswapd pages scanned 1809843 1801308 1846674 1873184 1861089
Kswapd pages reclaimed 1806972 1798684 1844219 1870509 1858622
Direct pages reclaimed 197227 188829 298380 286822 298835
Kswapd efficiency 99% 99% 99% 99% 99%
Kswapd velocity 953.382 970.449 952.243 934.569 922.286
Direct efficiency 99% 99% 99% 99% 99%
Direct velocity 104.058 101.832 153.961 143.200 148.205
Percentage direct scans 9% 9% 13% 13% 13%
Zone normal velocity 347.289 359.676 348.063 339.933 332.983
Zone dma32 velocity 710.151 712.605 758.140 737.835 737.507
Zone dma velocity 0.000 0.000 0.000 0.000 0.000
Page writes by reclaim 557.600 429.000 353.600 426.400 381.800
Page writes file 159 53 7 79 48
Page writes anon 398 375 345 346 333
Page reclaim immediate 825 644 411 575 420
Sector Reads 2781750 2769780 2878547 2939128 2910483
Sector Writes 12080843 12083351 12012892 12002132 12010745
Page rescued immediate 0 0 0 0 0
Slabs scanned
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Mel Gorman
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286549dcaf |
sched: add tracepoints related to NUMA task migration
This patch adds three tracepoints o trace_sched_move_numa when a task is moved to a node o trace_sched_swap_numa when a task is swapped with another task o trace_sched_stick_numa when a numa-related migration fails The tracepoints allow the NUMA scheduler activity to be monitored and the following high-level metrics can be calculated o NUMA migrated stuck nr trace_sched_stick_numa o NUMA migrated idle nr trace_sched_move_numa o NUMA migrated swapped nr trace_sched_swap_numa o NUMA local swapped trace_sched_swap_numa src_nid == dst_nid (should never happen) o NUMA remote swapped trace_sched_swap_numa src_nid != dst_nid (should == NUMA migrated swapped) o NUMA group swapped trace_sched_swap_numa src_ngid == dst_ngid Maybe a small number of these are acceptable but a high number would be a major surprise. It would be even worse if bounces are frequent. o NUMA avg task migs. Average number of migrations for tasks o NUMA stddev task mig Self-explanatory o NUMA max task migs. Maximum number of migrations for a single task In general the intent of the tracepoints is to help diagnose problems where automatic NUMA balancing appears to be doing an excessive amount of useless work. [akpm@linux-foundation.org: remove semicolon-after-if, repair coding-style] Signed-off-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Cc: Alex Thorlton <athorlton@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Mel Gorman
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af1839d722 |
mm: numa: trace tasks that fail migration due to rate limiting
A low local/remote numa hinting fault ratio is potentially explained by failed migrations. This patch adds a tracepoint that fires when migration fails due to migration rate limitation. Signed-off-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Cc: Alex Thorlton <athorlton@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Dirk Brandewie
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b69880f9cc |
intel_pstate: Add trace point to report internal state.
Add perf trace event "power:pstate_sample" to report driver state to aid in diagnosing issues reported against intel_pstate. Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Ben Hutchings
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ae78dbfa40 |
net: Add trace events for all receive entry points, exposing more skb fields
The existing net/netif_rx and net/netif_receive_skb trace events provide little information about the skb, nor do they indicate how it entered the stack. Add trace events at entry of each of the exported functions, including most fields that are likely to be interesting for debugging driver datapath behaviour. Split netif_rx() and netif_receive_skb() so that internal calls are not traced. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Ben Hutchings
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d87d04a785 |
net: Add net_dev_start_xmit trace event, exposing more skb fields
The existing net/net_dev_xmit trace event provides little information about the skb that has been passed to the driver, and it is not simple to add more since the skb may already have been freed at the point the event is emitted. Add a separate trace event before the skb is passed to the driver, including most fields that are likely to be interesting for debugging driver datapath behaviour. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Steven Rostedt (Red Hat)
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13a1e4aef5 |
tracing: Consolidate event trigger code
The event trigger code that checks for callback triggers before and after recording of an event has lots of flags checks. This code is duplicated throughout the ftrace events, kprobes and system calls. They all do the exact same checks against the event flags. Added helper functions ftrace_trigger_soft_disabled(), event_trigger_unlock_commit() and event_trigger_unlock_commit_regs() that consolidated the code and these are used instead. Link: http://lkml.kernel.org/r/20140106222703.5e7dbba2@gandalf.local.home Acked-by: Tom Zanussi <tom.zanussi@linux.intel.com> Tested-by: Tom Zanussi <tom.zanussi@linux.intel.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
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Kent Overstreet
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a85e968e66 |
bcache: Add struct btree_keys
Soon, bset.c won't need to depend on struct btree. Signed-off-by: Kent Overstreet <kmo@daterainc.com> |
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Kent Overstreet
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78365411b3 |
bcache: Rework allocator reserves
We need a reserve for allocating buckets for new btree nodes - and now that we've got multiple btrees, it really needs to be per btree. This reworks the reserves so we've got separate freelists for each reserve instead of watermarks, which seems to make things a bit cleaner, and it adds some code so that btree_split() can make sure the reserve is available before it starts. Signed-off-by: Kent Overstreet <kmo@daterainc.com> |
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Trond Myklebust
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e8353c7682 |
SUNRPC: Add tracepoint for socket errors
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> |
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Jens Axboe
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b28bc9b38c |
Linux 3.13-rc6
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJSwLfoAAoJEHm+PkMAQRiGi6QH/1U1B7lmHChDTw3jj1lfm9gA 189Si4QJlnxFWCKHvKEL+pcaVuACU+aMGI8+KyMYK4/JfuWVjjj5fr/SvyHH2/8m LdSK8aHMhJ46uBS4WJ/l6v46qQa5e2vn8RKSBAyKm/h4vpt+hd6zJdoFrFai4th7 k/TAwOAEHI5uzexUChwLlUBRTvbq4U8QUvDu+DeifC8cT63CGaaJ4qVzjOZrx1an eP6UXZrKDASZs7RU950i7xnFVDQu4PsjlZi25udsbeiKcZJgPqGgXz5ULf8ZH8RQ YCi1JOnTJRGGjyIOyLj7pyB01h7XiSM2+eMQ0S7g54F2s7gCJ58c2UwQX45vRWU= =/4/R -----END PGP SIGNATURE----- Merge tag 'v3.13-rc6' into for-3.14/core Needed to bring blk-mq uptodate, since changes have been going in since for-3.14/core was established. Fixup merge issues related to the immutable biovec changes. Signed-off-by: Jens Axboe <axboe@kernel.dk> Conflicts: block/blk-flush.c fs/btrfs/check-integrity.c fs/btrfs/extent_io.c fs/btrfs/scrub.c fs/logfs/dev_bdev.c |
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Jaegeuk Kim
|
93dfe2ac51 |
f2fs: refactor bio-related operations
This patch integrates redundant bio operations on read and write IOs. 1. Move bio-related codes to the top of data.c. 2. Replace f2fs_submit_bio with f2fs_submit_merged_bio, which handles read bios additionally. 3. Introduce __submit_merged_bio to submit the merged bio. 4. Change f2fs_readpage to f2fs_submit_page_bio. 5. Introduce f2fs_submit_page_mbio to integrate previous submit_read_page and submit_write_page. Reviewed-by: Gu Zheng <guz.fnst@cn.fujitsu.com> Reviewed-by: Chao Yu <chao2.yu@samsung.com > Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> |
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Jaegeuk Kim
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a709f4a2f2 |
f2fs: add detailed information of bio types in the tracepoints
This patch inserts information of bio types in more detail. So, we can now see REQ_META and REQ_PRIO too. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> |
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Chao Yu
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d4d288bc72 |
f2fs: adds a tracepoint for f2fs_submit_read_bio
This patch adds a tracepoint for f2fs_submit_read_bio. Signed-off-by: Chao Yu <chao2.yu@samsung.com> [Jaegeuk Kim: integrate tracepoints of f2fs_submit_read(_write)_bio] Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> |
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Chao Yu
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87b8872d5b |
f2fs: adds a tracepoint for submit_read_page
This patch adds a tracepoint for submit_read_page. Signed-off-by: Chao Yu <chao2.yu@samsung.com> [Jaegeuk Kim: integrate tracepoints of f2fs_submit_read(_write)_page] Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> |
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Jaegeuk Kim
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1661d07c2d |
f2fs: add a tracepoint for f2fs_issue_discard
This patch adds a tracepoint for f2fs_issue_discard. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> |
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Tom Zanussi
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bac5fb97a1 |
tracing: Add and use generic set_trigger_filter() implementation
Add a generic event_command.set_trigger_filter() op implementation and
have the current set of trigger commands use it - this essentially
gives them all support for filters.
Syntactically, filters are supported by adding 'if <filter>' just
after the command, in which case only events matching the filter will
invoke the trigger. For example, to add a filter to an
enable/disable_event command:
echo 'enable_event:system:event if common_pid == 999' > \
.../othersys/otherevent/trigger
The above command will only enable the system:event event if the
common_pid field in the othersys:otherevent event is 999.
As another example, to add a filter to a stacktrace command:
echo 'stacktrace if common_pid == 999' > \
.../somesys/someevent/trigger
The above command will only trigger a stacktrace if the common_pid
field in the event is 999.
The filter syntax is the same as that described in the 'Event
filtering' section of Documentation/trace/events.txt.
Because triggers can now use filters, the trigger-invoking logic needs
to be moved in those cases - e.g. for ftrace_raw_event_calls, if a
trigger has a filter associated with it, the trigger invocation now
needs to happen after the { assign; } part of the call, in order for
the trigger condition to be tested.
There's still a SOFT_DISABLED-only check at the top of e.g. the
ftrace_raw_events function, so when an event is soft disabled but not
because of the presence of a trigger, the original SOFT_DISABLED
behavior remains unchanged.
There's also a bit of trickiness in that some triggers need to avoid
being invoked while an event is currently in the process of being
logged, since the trigger may itself log data into the trace buffer.
Thus we make sure the current event is committed before invoking those
triggers. To do that, we split the trigger invocation in two - the
first part (event_triggers_call()) checks the filter using the current
trace record; if a command has the post_trigger flag set, it sets a
bit for itself in the return value, otherwise it directly invoks the
trigger. Once all commands have been either invoked or set their
return flag, event_triggers_call() returns. The current record is
then either committed or discarded; if any commands have deferred
their triggers, those commands are finally invoked following the close
of the current event by event_triggers_post_call().
To simplify the above and make it more efficient, the TRIGGER_COND bit
is introduced, which is set only if a soft-disabled trigger needs to
use the log record for filter testing or needs to wait until the
current log record is closed.
The syscall event invocation code is also changed in analogous ways.
Because event triggers need to be able to create and free filters,
this also adds a couple external wrappers for the existing
create_filter and free_filter functions, which are too generic to be
made extern functions themselves.
Link: http://lkml.kernel.org/r/7164930759d8719ef460357f143d995406e4eead.1382622043.git.tom.zanussi@linux.intel.com
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Tom Zanussi
|
85f2b08268 |
tracing: Add basic event trigger framework
Add a 'trigger' file for each trace event, enabling 'trace event
triggers' to be set for trace events.
'trace event triggers' are patterned after the existing 'ftrace
function triggers' implementation except that triggers are written to
per-event 'trigger' files instead of to a single file such as the
'set_ftrace_filter' used for ftrace function triggers.
The implementation is meant to be entirely separate from ftrace
function triggers, in order to keep the respective implementations
relatively simple and to allow them to diverge.
The event trigger functionality is built on top of SOFT_DISABLE
functionality. It adds a TRIGGER_MODE bit to the ftrace_event_file
flags which is checked when any trace event fires. Triggers set for a
particular event need to be checked regardless of whether that event
is actually enabled or not - getting an event to fire even if it's not
enabled is what's already implemented by SOFT_DISABLE mode, so trigger
mode directly reuses that. Event trigger essentially inherit the soft
disable logic in __ftrace_event_enable_disable() while adding a bit of
logic and trigger reference counting via tm_ref on top of that in a
new trace_event_trigger_enable_disable() function. Because the base
__ftrace_event_enable_disable() code now needs to be invoked from
outside trace_events.c, a wrapper is also added for those usages.
The triggers for an event are actually invoked via a new function,
event_triggers_call(), and code is also added to invoke them for
ftrace_raw_event calls as well as syscall events.
The main part of the patch creates a new trace_events_trigger.c file
to contain the trace event triggers implementation.
The standard open, read, and release file operations are implemented
here.
The open() implementation sets up for the various open modes of the
'trigger' file. It creates and attaches the trigger iterator and sets
up the command parser. If opened for reading set up the trigger
seq_ops.
The read() implementation parses the event trigger written to the
'trigger' file, looks up the trigger command, and passes it along to
that event_command's func() implementation for command-specific
processing.
The release() implementation does whatever cleanup is needed to
release the 'trigger' file, like releasing the parser and trigger
iterator, etc.
A couple of functions for event command registration and
unregistration are added, along with a list to add them to and a mutex
to protect them, as well as an (initially empty) registration function
to add the set of commands that will be added by future commits, and
call to it from the trace event initialization code.
also added are a couple trigger-specific data structures needed for
these implementations such as a trigger iterator and a struct for
trigger-specific data.
A couple structs consisting mostly of function meant to be implemented
in command-specific ways, event_command and event_trigger_ops, are
used by the generic event trigger command implementations. They're
being put into trace.h alongside the other trace_event data structures
and functions, in the expectation that they'll be needed in several
trace_event-related files such as trace_events_trigger.c and
trace_events.c.
The event_command.func() function is meant to be called by the trigger
parsing code in order to add a trigger instance to the corresponding
event. It essentially coordinates adding a live trigger instance to
the event, and arming the triggering the event.
Every event_command func() implementation essentially does the
same thing for any command:
- choose ops - use the value of param to choose either a number or
count version of event_trigger_ops specific to the command
- do the register or unregister of those ops
- associate a filter, if specified, with the triggering event
The reg() and unreg() ops allow command-specific implementations for
event_trigger_op registration and unregistration, and the
get_trigger_ops() op allows command-specific event_trigger_ops
selection to be parameterized. When a trigger instance is added, the
reg() op essentially adds that trigger to the triggering event and
arms it, while unreg() does the opposite. The set_filter() function
is used to associate a filter with the trigger - if the command
doesn't specify a set_filter() implementation, the command will ignore
filters.
Each command has an associated trigger_type, which serves double duty,
both as a unique identifier for the command as well as a value that
can be used for setting a trigger mode bit during trigger invocation.
The signature of func() adds a pointer to the event_command struct,
used to invoke those functions, along with a command_data param that
can be passed to the reg/unreg functions. This allows func()
implementations to use command-specific blobs and supports code
re-use.
The event_trigger_ops.func() command corrsponds to the trigger 'probe'
function that gets called when the triggering event is actually
invoked. The other functions are used to list the trigger when
needed, along with a couple mundane book-keeping functions.
This also moves event_file_data() into trace.h so it can be used
outside of trace_events.c.
Link: http://lkml.kernel.org/r/316d95061accdee070aac8e5750afba0192fa5b9.1382622043.git.tom.zanussi@linux.intel.com
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Idea-by: Steve Rostedt <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
|
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Ingo Molnar
|
014952270e |
* Add the functionality to override error reporting agents as some
machines are sporting a new extended error logging capability which, if done properly in the BIOS, makes a corresponding EDAC module redundant, from Gong Chen. * PCIe AER tracepoint severity levels fix, from Rui Wang. * Error path correction for the mce device init, from Levente Kurusa. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.15 (GNU/Linux) iQIcBAABAgAGBQJSrCysAAoJEBLB8Bhh3lVK1ikP/0hKY1Kk4tjbSta9A9Z8LdQG 9F5JzEny47DpTrLaKij7MqAlbYFO8sSm7Zw0CEztTF7Ou/H37GAuxhMlB8ECMGOm Dzu53X1rySTna9mB+1gyXXd+pJypp/oe18/o16rw1QKjI9o2Kfgwfj7lKvytR549 kDM1dhxEImQIS5cpJPkOPbcpVlSqYN7BnK9/Qx3h0W70httT/8qrr9xVtVL7wjOT auTA0R5/TkV06FtxyfHUNULEWTSP+2yNP/iJbusR6f4Jk1j0XmyCFr0BYOkPA1UO 9+wC9+2R+r7rJw8MBfMzNmPrRzDJHdaiHPwYqse05yewRHfRHe5cgZWJYbL8Qv0u 2WOX+fY12EfDYlihcOYtlupRzhGfGKRsaRpSuG1zX87ctDxAfNZencv4hnaJvfqG Xk6ggIX6tHKEivO2gmaPsmhoKveh0zcozUs+wgh/tvV5QB6ioFCjzHfSEsix5+BH ryyg1ri7IZnh92g3UuSUpE0OCbAquMfI7XIJo+kFs0u79dZTL/kD3wVu6oYazwdy yTrvIq7Bq5cMWnnni5w7dIU09ef2uvDgyHyAS6+RiqaQxhYFsW8/yx2zJrIloWRs 7txz6t3CVmWFiejIg2gw6KyjaG6pXRBkDkI1XU6T+bKLb31ojx2+i9UKIIUeRZTB iisWAOI6ZSdt4eAkgeaI =r//I -----END PGP SIGNATURE----- Merge tag 'ras_for_3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp into x86/ras Pull RAS updates from Borislav Petkov: * Add the functionality to override error reporting agents as some machines are sporting a new extended error logging capability which, if done properly in the BIOS, makes a corresponding EDAC module redundant, from Gong Chen. * PCIe AER tracepoint severity levels fix, from Rui Wang. * Error path correction for the mce device init, from Levente Kurusa. Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
|
Wade Farnsworth
|
2d01237389 |
[media] v4l2-dev: Add tracepoints for QBUF and DQBUF
Add tracepoints to the QBUF and DQBUF ioctls to enable rudimentary performance measurements using standard kernel tracers. [m.chehab@samsung.com: CodingStyle fixes (whitespacing)] Signed-off-by: Wade Farnsworth <wade_farnsworth@mentor.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com> |
|
|
Rui Wang
|
545104dd2b |
PCI, AER: Fix severity usage in aer trace event
There's inconsistency between dmesg and the trace event output.
When dmesg says "severity=Corrected", the trace event says
"severity=Fatal". What happens is that HW_EVENT_ERR_CORRECTED is
defined in edac.h:
enum hw_event_mc_err_type {
HW_EVENT_ERR_CORRECTED,
HW_EVENT_ERR_UNCORRECTED,
HW_EVENT_ERR_FATAL,
HW_EVENT_ERR_INFO,
};
while aer_print_error() uses aer_error_severity_string[] defined as:
static const char *aer_error_severity_string[] = {
"Uncorrected (Non-Fatal)",
"Uncorrected (Fatal)",
"Corrected"
};
In this case dmesg is correct because info->severity is assigned in
aer_isr_one_error() using the definitions in include/linux/ras.h:
Signed-off-by: Rui Wang <rui.y.wang@intel.com>
Acked-by: Ethan Zhao <ethan.kernel@gmail.com>
Link: http://lkml.kernel.org/r/CANVTcTaP18CiGOSEcX5Ch_wPw9mEhkgokfp+d+ZOMFD+Ce4juA@mail.gmail.com
Signed-off-by: Borislav Petkov <bp@suse.de>
|
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|
Linus Torvalds
|
e321ae4c20 |
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar: "Misc kernel and tooling fixes" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tools lib traceevent: Fix conversion of pointer to integer of different size perf/trace: Properly use u64 to hold event_id perf: Remove fragile swevent hlist optimization ftrace, perf: Avoid infinite event generation loop tools lib traceevent: Fix use of multiple options in processing field perf header: Fix possible memory leaks in process_group_desc() perf header: Fix bogus group name perf tools: Tag thread comm as overriden |
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|
Steven Rostedt (Red Hat)
|
4e58e54754 |
tracing: Allow events to have NULL strings
If an TRACE_EVENT() uses __assign_str() or __get_str on a NULL pointer
then the following oops will happen:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<c127a17b>] strlen+0x10/0x1a
*pde = 00000000 ^M
Oops: 0000 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.13.0-rc1-test+ #2
Hardware name: /DG965MQ, BIOS MQ96510J.86A.0372.2006.0605.1717 06/05/2006^M
task: f5cde9f0 ti: f5e5e000 task.ti: f5e5e000
EIP: 0060:[<c127a17b>] EFLAGS: 00210046 CPU: 1
EIP is at strlen+0x10/0x1a
EAX: 00000000 EBX: c2472da8 ECX: ffffffff EDX: c2472da8
ESI: c1c5e5fc EDI: 00000000 EBP: f5e5fe84 ESP: f5e5fe80
DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
CR0: 8005003b CR2: 00000000 CR3: 01f32000 CR4: 000007d0
Stack:
f5f18b90 f5e5feb8 c10687a8 0759004f 00000005 00000005 00000005 00200046
00000002 00000000 c1082a93 f56c7e28 c2472da8 c1082a93 f5e5fee4 c106bc61^M
00000000 c1082a93 00000000 00000000 00000001 00200046 00200082 00000000
Call Trace:
[<c10687a8>] ftrace_raw_event_lock+0x39/0xc0
[<c1082a93>] ? ktime_get+0x29/0x69
[<c1082a93>] ? ktime_get+0x29/0x69
[<c106bc61>] lock_release+0x57/0x1a5
[<c1082a93>] ? ktime_get+0x29/0x69
[<c10824dd>] read_seqcount_begin.constprop.7+0x4d/0x75
[<c1082a93>] ? ktime_get+0x29/0x69^M
[<c1082a93>] ktime_get+0x29/0x69
[<c108a46a>] __tick_nohz_idle_enter+0x1e/0x426
[<c10690e8>] ? lock_release_holdtime.part.19+0x48/0x4d
[<c10bc184>] ? time_hardirqs_off+0xe/0x28
[<c1068c82>] ? trace_hardirqs_off_caller+0x3f/0xaf
[<c108a8cb>] tick_nohz_idle_enter+0x59/0x62
[<c1079242>] cpu_startup_entry+0x64/0x192
[<c102299c>] start_secondary+0x277/0x27c
Code: 90 89 c6 89 d0 88 c4 ac 38 e0 74 09 84 c0 75 f7 be 01 00 00 00 89 f0 48 5e 5d c3 55 89 e5 57 66 66 66 66 90 83 c9 ff 89 c7 31 c0 <f2> ae f7 d1 8d 41 ff 5f 5d c3 55 89 e5 57 66 66 66 66 90 31 ff
EIP: [<c127a17b>] strlen+0x10/0x1a SS:ESP 0068:f5e5fe80
CR2: 0000000000000000
---[ end trace 01bc47bf519ec1b2 ]---
New tracepoints have been added that have allowed for NULL pointers
being assigned to strings. To fix this, change the TRACE_EVENT() code
to check for NULL and if it is, it will assign "(null)" to it instead
(similar to what glibc printf does).
Reported-by: Shuah Khan <shuah.kh@samsung.com>
Reported-by: Jovi Zhangwei <jovi.zhangwei@gmail.com>
Link: http://lkml.kernel.org/r/CAGdX0WFeEuy+DtpsJzyzn0343qEEjLX97+o1VREFkUEhndC+5Q@mail.gmail.com
Link: http://lkml.kernel.org/r/528D6972.9010702@samsung.com
Fixes:
|
|
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Kent Overstreet
|
4f024f3797 |
block: Abstract out bvec iterator
Immutable biovecs are going to require an explicit iterator. To implement immutable bvecs, a later patch is going to add a bi_bvec_done member to this struct; for now, this patch effectively just renames things. Signed-off-by: Kent Overstreet <kmo@daterainc.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: "Ed L. Cashin" <ecashin@coraid.com> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Lars Ellenberg <drbd-dev@lists.linbit.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Yehuda Sadeh <yehuda@inktank.com> Cc: Sage Weil <sage@inktank.com> Cc: Alex Elder <elder@inktank.com> Cc: ceph-devel@vger.kernel.org Cc: Joshua Morris <josh.h.morris@us.ibm.com> Cc: Philip Kelleher <pjk1939@linux.vnet.ibm.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Neil Brown <neilb@suse.de> Cc: Alasdair Kergon <agk@redhat.com> Cc: Mike Snitzer <snitzer@redhat.com> Cc: dm-devel@redhat.com Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux390@de.ibm.com Cc: Boaz Harrosh <bharrosh@panasas.com> Cc: Benny Halevy <bhalevy@tonian.com> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Nicholas A. Bellinger" <nab@linux-iscsi.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Chris Mason <chris.mason@fusionio.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Andreas Dilger <adilger.kernel@dilger.ca> Cc: Jaegeuk Kim <jaegeuk.kim@samsung.com> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: Dave Kleikamp <shaggy@kernel.org> Cc: Joern Engel <joern@logfs.org> Cc: Prasad Joshi <prasadjoshi.linux@gmail.com> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: KONISHI Ryusuke <konishi.ryusuke@lab.ntt.co.jp> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Ben Myers <bpm@sgi.com> Cc: xfs@oss.sgi.com Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Guo Chao <yan@linux.vnet.ibm.com> Cc: Tejun Heo <tj@kernel.org> Cc: Asai Thambi S P <asamymuthupa@micron.com> Cc: Selvan Mani <smani@micron.com> Cc: Sam Bradshaw <sbradshaw@micron.com> Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Cc: "Roger Pau Monné" <roger.pau@citrix.com> Cc: Jan Beulich <jbeulich@suse.com> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Cc: Ian Campbell <Ian.Campbell@citrix.com> Cc: Sebastian Ott <sebott@linux.vnet.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Jerome Marchand <jmarchand@redhat.com> Cc: Joe Perches <joe@perches.com> Cc: Peng Tao <tao.peng@emc.com> Cc: Andy Adamson <andros@netapp.com> Cc: fanchaoting <fanchaoting@cn.fujitsu.com> Cc: Jie Liu <jeff.liu@oracle.com> Cc: Sunil Mushran <sunil.mushran@gmail.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Namjae Jeon <namjae.jeon@samsung.com> Cc: Pankaj Kumar <pankaj.km@samsung.com> Cc: Dan Magenheimer <dan.magenheimer@oracle.com> Cc: Mel Gorman <mgorman@suse.de>6 |
|
|
Linus Torvalds
|
fb0d1eb892 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason: "Almost all of these are bug fixes. Dave Sterba's documentation update is the big exception because he removed our promises to set any machine running Btrfs on fire" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Documentation: filesystems: update btrfs tools section Documentation: filesystems: add new btrfs mount options btrfs: update kconfig help text btrfs: fix bio_size_ok() for max_sectors > 0xffff btrfs: Use trace condition for get_extent tracepoint btrfs: fix typo in the log message Btrfs: fix list delete warning when removing ordered root from the list Btrfs: print bytenr instead of page pointer in check-int Btrfs: remove dead codes from ctree.h Btrfs: don't wait for ordered data outside desired range Btrfs: fix lockdep error in async commit Btrfs: avoid heavy operations in btrfs_commit_super Btrfs: fix __btrfs_start_workers retval Btrfs: disable online raid-repair on ro mounts Btrfs: do not inc uncorrectable_errors counter on ro scrubs Btrfs: only drop modified extents if we logged the whole inode Btrfs: make sure to copy everything if we rename Btrfs: don't BUG_ON() if we get an error walking backrefs |
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|
Steven Rostedt
|
4cd8587ce8 |
btrfs: Use trace condition for get_extent tracepoint
Doing an if statement to test some condition to know if we should
trigger a tracepoint is pointless when tracing is disabled. This just
adds overhead and wastes a branch prediction. This is why the
TRACE_EVENT_CONDITION() was created. It places the check inside the jump
label so that the branch does not happen unless tracing is enabled.
That is, instead of doing:
if (em)
trace_btrfs_get_extent(root, em);
Which is basically this:
if (em)
if (static_key(trace_btrfs_get_extent)) {
Using a TRACE_EVENT_CONDITION() we can just do:
trace_btrfs_get_extent(root, em);
And the condition trace event will do:
if (static_key(trace_btrfs_get_extent)) {
if (em) {
...
The static key is a non conditional jump (or nop) that is faster than
having to check if em is NULL or not.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
|
|
|
Peter Zijlstra
|
d5b5f391d4 |
ftrace, perf: Avoid infinite event generation loop
Vince's perf-trinity fuzzer found yet another 'interesting' problem. When we sample the irq_work_exit tracepoint with period==1 (or PERF_SAMPLE_PERIOD) and we add an fasync SIGNAL handler we create an infinite event generation loop: ,-> <IPI> | irq_work_exit() -> | trace_irq_work_exit() -> | ... | __perf_event_overflow() -> (due to fasync) | irq_work_queue() -> (irq_work_list must be empty) '--------- arch_irq_work_raise() Similar things can happen due to regular poll() wakeups if we exceed the ring-buffer wakeup watermark, or have an event_limit. To avoid this, dis-allow sampling this particular tracepoint. In order to achieve this, create a special perf_perm function pointer for each event and call this (when set) on trying to create a tracepoint perf event. [ roasted: use expr... to allow for ',' in your expression ] Reported-by: Vince Weaver <vincent.weaver@maine.edu> Tested-by: Vince Weaver <vincent.weaver@maine.edu> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Dave Jones <davej@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/20131114152304.GC5364@laptop.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Linus Torvalds
|
b29c8306a3 |
This batch of changes is mostly clean ups and small bug fixes.
The only real feature that was added this release is from Namhyung Kim, who introduced "set_graph_notrace" filter that lets you run the function graph tracer and not trace particular functions and their call chain. Tom Zanussi added some updates to the ftrace multibuffer tracing that made it more consistent with the top level tracing. One of the fixes for perf function tracing required an API change in RCU; the addition of "rcu_is_watching()". As Paul McKenney is pushing that change in this release too, he gave me a branch that included all the changes to get that working, and I pulled that into my tree in order to complete the perf function tracing fix. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQEcBAABAgAGBQJSgX5SAAoJEKQekfcNnQGulUAH/jORqJrKaNAulmZ314VsAqfa zMtF5UAAPf7kqc3AN/jtFrhJUNEfxWOo7A4r0FsM/rKdWJF+98GA6aqYVD+XoWFt +36fg1enxbXUjixQ96Uh+o1+BJUgYDqljuWzqSu/oiXWfWwl8+WL4kcbhb+V9WcF SpdzLCWVZRfhyDiN3+0zvyQ8RSG2Pd7CWn9zroI0e4sxGo0Ki6JUnIcXtZGOBDOQ IIZdjXvGSfpJ+3u3XvRPXJcltRCtOsVWxYzrmvRlmHDW5QMe1+WmmrlojTePrLaJ xn8+3WINqetAR+ZQnazbpt1XzJzKa8QtFgpiN0kT6qL7cg3N1Owc4vLGohl7wok= =Nesf -----END PGP SIGNATURE----- Merge tag 'trace-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing update from Steven Rostedt: "This batch of changes is mostly clean ups and small bug fixes. The only real feature that was added this release is from Namhyung Kim, who introduced "set_graph_notrace" filter that lets you run the function graph tracer and not trace particular functions and their call chain. Tom Zanussi added some updates to the ftrace multibuffer tracing that made it more consistent with the top level tracing. One of the fixes for perf function tracing required an API change in RCU; the addition of "rcu_is_watching()". As Paul McKenney is pushing that change in this release too, he gave me a branch that included all the changes to get that working, and I pulled that into my tree in order to complete the perf function tracing fix" * tag 'trace-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Add rcu annotation for syscall trace descriptors tracing: Do not use signed enums with unsigned long long in fgragh output tracing: Remove unused function ftrace_off_permanent() tracing: Do not assign filp->private_data to freed memory tracing: Add helper function tracing_is_disabled() tracing: Open tracer when ftrace_dump_on_oops is used tracing: Add support for SOFT_DISABLE to syscall events tracing: Make register/unregister_ftrace_command __init tracing: Update event filters for multibuffer recordmcount.pl: Add support for __fentry__ ftrace: Have control op function callback only trace when RCU is watching rcu: Do not trace rcu_is_watching() functions ftrace/x86: skip over the breakpoint for ftrace caller trace/trace_stat: use rbtree postorder iteration helper instead of opencoding ftrace: Add set_graph_notrace filter ftrace: Narrow down the protected area of graph_lock ftrace: Introduce struct ftrace_graph_data ftrace: Get rid of ftrace_graph_filter_enabled tracing: Fix potential out-of-bounds in trace_get_user() tracing: Show more exact help information about snapshot |
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Linus Torvalds
|
0891ad829d |
The /dev/random changes for 3.13 including a number of improvements in
the following areas: performance, avoiding waste of entropy, better tracking of entropy estimates, support for non-x86 platforms that have a register which can't be used for fine-grained timekeeping, but which might be good enough for the random driver. Also add some printk's so that we can see how quickly /dev/urandom can get initialized, and when programs try to use /dev/urandom before it is fully initialized (since this could be a security issue). This shouldn't be an issue on x86 desktop/laptops --- a test on my Lenovo T430s laptop shows that /dev/urandom is getting fully initialized approximately two seconds before the root file system is mounted read/write --- this may be an issue with ARM and MIPS embedded/mobile systems, though. These printk's will be a useful canary before potentially adding a future change to start blocking processes which try to read from /dev/urandom before it is initialized, which is something FreeBSD does already for security reasons, and which security folks have been agitating for Linux to also adopt. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQIcBAABCAAGBQJShC4MAAoJENNvdpvBGATwC0QQAMujsIxTZnsHwQrbb5eJf1kD 74TwQyEfWw5qnGQrc8JOoAbe1MG7C4QlfHxRsWxvCD8G+Mft4Q5ZgZOt0/ecAGD6 Tid58EaZGSfK9+YE6jgvJFekQADCREdPSxBASJ3cECT6dXXBX9IqR9gbAK02mM+w QZdbgWBMsPJZiHSsCNeRbZ9oIiPdcNDsMJwzJhirPUeAnKCaX3z+LWc3XcMw7wYi q5cSl0ENZd6QsBKs37A1ol5BtLEsoot2t3HKdnpOBsDQKSJ712KduwN5jUfs6h9D 0fqmVHwfKsge+D8/3NgBKz+yWLQnGkuB4Ibo+09BZXwH3rYU1/gKm0iLNi0yQ5fV 73bn4pqF6cZdDNgj0Ic+MyYAW+S/NOQ6TcF/3eSAPW6z/wHZOfZ2njCh1GEHBOKI 6iZZu+Ek7QyFJ/z5Fr1bXFJR7V99r7hRD3gwMCMZ/mjhloB2cyD0a2A9kFP85ykI I4tFEnq0FpX/K60ag4hiLnqVx/TsmbdMoz+8OpQckHgQJrZMuRRf1d+T4au47Y6K uXGLpSuvkALYW2koo2OoO2d873N/89fqFL8lI8Iy0YlgAxxxm++gl1Mql/E1wPOa 5jB0lW/jex/CquE7meTgRlM/fTU/HVbe3608ZNUYBJUHS9K/PaSnCCu2ya8/TsSW xeVS/vMnNvtGerdEIyKm =wla0 -----END PGP SIGNATURE----- Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random Pull /dev/random changes from Ted Ts'o: "The /dev/random changes for 3.13 including a number of improvements in the following areas: performance, avoiding waste of entropy, better tracking of entropy estimates, support for non-x86 platforms that have a register which can't be used for fine-grained timekeeping, but which might be good enough for the random driver. Also add some printk's so that we can see how quickly /dev/urandom can get initialized, and when programs try to use /dev/urandom before it is fully initialized (since this could be a security issue). This shouldn't be an issue on x86 desktop/laptops --- a test on my Lenovo T430s laptop shows that /dev/urandom is getting fully initialized approximately two seconds before the root file system is mounted read/write --- this may be an issue with ARM and MIPS embedded/mobile systems, though. These printk's will be a useful canary before potentially adding a future change to start blocking processes which try to read from /dev/urandom before it is initialized, which is something FreeBSD does already for security reasons, and which security folks have been agitating for Linux to also adopt" * tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random: random: add debugging code to detect early use of get_random_bytes() random: initialize the last_time field in struct timer_rand_state random: don't zap entropy count in rand_initialize() random: printk notifications for urandom pool initialization random: make add_timer_randomness() fill the nonblocking pool first random: convert DEBUG_ENT to tracepoints random: push extra entropy to the output pools random: drop trickle mode random: adjust the generator polynomials in the mixing function slightly random: speed up the fast_mix function by a factor of four random: cap the rate which the /dev/urandom pool gets reseeded random: optimize the entropy_store structure random: optimize spinlock use in add_device_randomness() random: fix the tracepoint for get_random_bytes(_arch) random: account for entropy loss due to overwrites random: allow fractional bits to be tracked random: statically compute poolbitshift, poolbytes, poolbits random: mix in architectural randomness earlier in extract_buf() |
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Linus Torvalds
|
f412f2c60b |
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull second round of block driver updates from Jens Axboe: "As mentioned in the original pull request, the bcache bits were pulled because of their dependency on the immutable bio vecs. Kent re-did this part and resubmitted it, so here's the 2nd round of (mostly) driver updates for 3.13. It contains: - The bcache work from Kent. - Conversion of virtio-blk to blk-mq. This removes the bio and request path, and substitutes with the blk-mq path instead. The end result almost 200 deleted lines. Patch is acked by Asias and Christoph, who both did a bunch of testing. - A removal of bootmem.h include from Grygorii Strashko, part of a larger series of his killing the dependency on that header file. - Removal of __cpuinit from blk-mq from Paul Gortmaker" * 'for-linus' of git://git.kernel.dk/linux-block: (56 commits) virtio_blk: blk-mq support blk-mq: remove newly added instances of __cpuinit bcache: defensively handle format strings bcache: Bypass torture test bcache: Delete some slower inline asm bcache: Use ida for bcache block dev minor bcache: Fix sysfs splat on shutdown with flash only devs bcache: Better full stripe scanning bcache: Have btree_split() insert into parent directly bcache: Move spinlock into struct time_stats bcache: Kill sequential_merge option bcache: Kill bch_next_recurse_key() bcache: Avoid deadlocking in garbage collection bcache: Incremental gc bcache: Add make_btree_freeing_key() bcache: Add btree_node_write_sync() bcache: PRECEDING_KEY() bcache: bch_(btree|extent)_ptr_invalid() bcache: Don't bother with bucket refcount for btree node allocations bcache: Debug code improvements ... |
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Linus Torvalds
|
91838e2dab |
IOMMU Updates for Linux v3.13
This time the updates contain:
* Tracepoints for certain IOMMU-API functions to make
their use easier to debug
* A tracepoint for IOMMU page faults to make it easier
to get them in user space
* Updates and fixes for the new ARM SMMU driver after
the first hardware showed up
* Various other fixes and cleanups in other IOMMU drivers
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Merge tag 'iommu-updates-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU updates from Joerg Roedel:
"This time the updates contain:
- Tracepoints for certain IOMMU-API functions to make their use
easier to debug
- A tracepoint for IOMMU page faults to make it easier to get them in
user space
- Updates and fixes for the new ARM SMMU driver after the first
hardware showed up
- Various other fixes and cleanups in other IOMMU drivers"
* tag 'iommu-updates-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (26 commits)
iommu/shmobile: Enable the driver on all ARM platforms
iommu/tegra-smmu: Staticize tegra_smmu_pm_ops
iommu/tegra-gart: Staticize tegra_gart_pm_ops
iommu/vt-d: Use list_for_each_entry_safe() for dmar_domain->devices traversal
iommu/vt-d: Use for_each_drhd_unit() instead of list_for_each_entry()
iommu/vt-d: Fixed interaction of VFIO_IOMMU_MAP_DMA with IOMMU address limits
iommu/arm-smmu: Clear global and context bank fault status registers
iommu/arm-smmu: Print context fault information
iommu/arm-smmu: Check for num_context_irqs > 0 to avoid divide by zero exception
iommu/arm-smmu: Refine check for proper size of mapped region
iommu/arm-smmu: Switch to subsys_initcall for driver registration
iommu/arm-smmu: use relaxed accessors where possible
iommu/arm-smmu: replace devm_request_and_ioremap by devm_ioremap_resource
iommu: Remove stack trace from broken irq remapping warning
iommu: Change iommu driver to call io_page_fault trace event
iommu: Add iommu_error class event to iommu trace
iommu/tegra: gart: cleanup devm_* functions usage
iommu/tegra: Print phys_addr_t using %pa
iommu: No need to pass '0x' when '%pa' is used
iommu: Change iommu driver to call unmap trace event
...
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Linus Torvalds
|
f080480488 |
Here are the 3.13 KVM changes. There was a lot of work on the PPC
side: the HV and emulation flavors can now coexist in a single kernel is probably the most interesting change from a user point of view. On the x86 side there are nested virtualization improvements and a few bugfixes. ARM got transparent huge page support, improved overcommit, and support for big endian guests. Finally, there is a new interface to connect KVM with VFIO. This helps with devices that use NoSnoop PCI transactions, letting the driver in the guest execute WBINVD instructions. This includes some nVidia cards on Windows, that fail to start without these patches and the corresponding userspace changes. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABAgAGBQJShPAhAAoJEBvWZb6bTYbyl48P/297GgmELHAGBgjvb6q7yyGu L8+eHjKbh4XBAkPwyzbvUjuww5z2hM0N3JQ0BDV9oeXlO+zwwCEns/sg2Q5/NJXq XxnTeShaKnp9lqVBnE6G9rAOUWKoyLJ2wItlvUL8JlaO9xJ0Vmk0ta4n2Nv5GqDp db6UD7vju6rHtIAhNpvvAO51kAOwc01xxRixCVb7KUYOnmO9nvpixzoI/S0Rp1gu w/OWMfCosDzBoT+cOe79Yx1OKcpaVW94X6CH1s+ShCw3wcbCL2f13Ka8/E3FIcuq vkZaLBxio7vjUAHRjPObw0XBW4InXEbhI1DjzIvm8dmc4VsgmtLQkTCG8fj+jINc dlHQUq6Do+1F4zy6WMBUj8tNeP1Z9DsABp98rQwR8+BwHoQpGQBpAxW0TE0ZMngC t1caqyvjZ5pPpFUxSrAV+8Kg4AvobXPYOim0vqV7Qea07KhFcBXLCfF7BWdwq/Jc 0CAOlsLL4mHGIQWZJuVGw0YGP7oATDCyewlBuDObx+szYCoV4fQGZVBEL0KwJx/1 7lrLN7JWzRyw6xTgJ5VVwgYE1tUY4IFQcHu7/5N+dw8/xg9KWA3f4PeMavIKSf+R qteewbtmQsxUnvuQIBHLs8NRWPnBPy+F3Sc2ckeOLIe4pmfTte6shtTXcLDL+LqH NTmT/cfmYp2BRkiCfCiS =rWNf -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull KVM changes from Paolo Bonzini: "Here are the 3.13 KVM changes. There was a lot of work on the PPC side: the HV and emulation flavors can now coexist in a single kernel is probably the most interesting change from a user point of view. On the x86 side there are nested virtualization improvements and a few bugfixes. ARM got transparent huge page support, improved overcommit, and support for big endian guests. Finally, there is a new interface to connect KVM with VFIO. This helps with devices that use NoSnoop PCI transactions, letting the driver in the guest execute WBINVD instructions. This includes some nVidia cards on Windows, that fail to start without these patches and the corresponding userspace changes" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (146 commits) kvm, vmx: Fix lazy FPU on nested guest arm/arm64: KVM: PSCI: propagate caller endianness to the incoming vcpu arm/arm64: KVM: MMIO support for BE guest kvm, cpuid: Fix sparse warning kvm: Delete prototype for non-existent function kvm_check_iopl kvm: Delete prototype for non-existent function complete_pio hung_task: add method to reset detector pvclock: detect watchdog reset at pvclock read kvm: optimize out smp_mb after srcu_read_unlock srcu: API for barrier after srcu read unlock KVM: remove vm mmap method KVM: IOMMU: hva align mapping page size KVM: x86: trace cpuid emulation when called from emulator KVM: emulator: cleanup decode_register_operand() a bit KVM: emulator: check rex prefix inside decode_register() KVM: x86: fix emulation of "movzbl %bpl, %eax" kvm_host: typo fix KVM: x86: emulate SAHF instruction MAINTAINERS: add tree for kvm.git Documentation/kvm: add a 00-INDEX file ... |
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Linus Torvalds
|
eda670c626 |
Features:
- SWIOTLB has tracing added when doing bounce buffer.
- Xen ARM/ARM64 can use Xen-SWIOTLB. This work allows Linux to
safely program real devices for DMA operations when running as
a guest on Xen on ARM, without IOMMU support.*1
- xen_raw_printk works with PVHVM guests if needed.
Bug-fixes:
- Make memory ballooning work under HVM with large MMIO region.
- Inform hypervisor of MCFG regions found in ACPI DSDT.
- Remove deprecated IRQF_DISABLED.
- Remove deprecated __cpuinit.
[*1]:
"On arm and arm64 all Xen guests, including dom0, run with second stage
translation enabled. As a consequence when dom0 programs a device for a
DMA operation is going to use (pseudo) physical addresses instead
machine addresses. This work introduces two trees to track physical to
machine and machine to physical mappings of foreign pages. Local pages
are assumed mapped 1:1 (physical address == machine address). It
enables the SWIOTLB-Xen driver on ARM and ARM64, so that Linux can
translate physical addresses to machine addresses for dma operations
when necessary. " (Stefano).
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Merge tag 'stable/for-linus-3.13-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull Xen updates from Konrad Rzeszutek Wilk:
"This has tons of fixes and two major features which are concentrated
around the Xen SWIOTLB library.
The short <blurb> is that the tracing facility (just one function) has
been added to SWIOTLB to make it easier to track I/O progress.
Additionally under Xen and ARM (32 & 64) the Xen-SWIOTLB driver
"is used to translate physical to machine and machine to physical
addresses of foreign[guest] pages for DMA operations" (Stefano) when
booting under hardware without proper IOMMU.
There are also bug-fixes, cleanups, compile warning fixes, etc.
The commit times for some of the commits is a bit fresh - that is b/c
we wanted to make sure we have the Ack's from the ARM folks - which
with the string of back-to-back conferences took a bit of time. Rest
assured - the code has been stewing in #linux-next for some time.
Features:
- SWIOTLB has tracing added when doing bounce buffer.
- Xen ARM/ARM64 can use Xen-SWIOTLB. This work allows Linux to
safely program real devices for DMA operations when running as a
guest on Xen on ARM, without IOMMU support. [*1]
- xen_raw_printk works with PVHVM guests if needed.
Bug-fixes:
- Make memory ballooning work under HVM with large MMIO region.
- Inform hypervisor of MCFG regions found in ACPI DSDT.
- Remove deprecated IRQF_DISABLED.
- Remove deprecated __cpuinit.
[*1]:
"On arm and arm64 all Xen guests, including dom0, run with second
stage translation enabled. As a consequence when dom0 programs a
device for a DMA operation is going to use (pseudo) physical
addresses instead machine addresses. This work introduces two trees
to track physical to machine and machine to physical mappings of
foreign pages. Local pages are assumed mapped 1:1 (physical address
== machine address). It enables the SWIOTLB-Xen driver on ARM and
ARM64, so that Linux can translate physical addresses to machine
addresses for dma operations when necessary. " (Stefano)"
* tag 'stable/for-linus-3.13-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (32 commits)
xen/arm: pfn_to_mfn and mfn_to_pfn return the argument if nothing is in the p2m
arm,arm64/include/asm/io.h: define struct bio_vec
swiotlb-xen: missing include dma-direction.h
pci-swiotlb-xen: call pci_request_acs only ifdef CONFIG_PCI
arm: make SWIOTLB available
xen: delete new instances of added __cpuinit
xen/balloon: Set balloon's initial state to number of existing RAM pages
xen/mcfg: Call PHYSDEVOP_pci_mmcfg_reserved for MCFG areas.
xen: remove deprecated IRQF_DISABLED
x86/xen: remove deprecated IRQF_DISABLED
swiotlb-xen: fix error code returned by xen_swiotlb_map_sg_attrs
swiotlb-xen: static inline xen_phys_to_bus, xen_bus_to_phys, xen_virt_to_bus and range_straddles_page_boundary
grant-table: call set_phys_to_machine after mapping grant refs
arm,arm64: do not always merge biovec if we are running on Xen
swiotlb: print a warning when the swiotlb is full
swiotlb-xen: use xen_dma_map/unmap_page, xen_dma_sync_single_for_cpu/device
xen: introduce xen_dma_map/unmap_page and xen_dma_sync_single_for_cpu/device
tracing/events: Fix swiotlb tracepoint creation
swiotlb-xen: use xen_alloc/free_coherent_pages
xen: introduce xen_alloc/free_coherent_pages
...
|
|
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Linus Torvalds
|
5e30025a31 |
Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core locking changes from Ingo Molnar:
"The biggest changes:
- add lockdep support for seqcount/seqlocks structures, this
unearthed both bugs and required extra annotation.
- move the various kernel locking primitives to the new
kernel/locking/ directory"
* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
block: Use u64_stats_init() to initialize seqcounts
locking/lockdep: Mark __lockdep_count_forward_deps() as static
lockdep/proc: Fix lock-time avg computation
locking/doc: Update references to kernel/mutex.c
ipv6: Fix possible ipv6 seqlock deadlock
cpuset: Fix potential deadlock w/ set_mems_allowed
seqcount: Add lockdep functionality to seqcount/seqlock structures
net: Explicitly initialize u64_stats_sync structures for lockdep
locking: Move the percpu-rwsem code to kernel/locking/
locking: Move the lglocks code to kernel/locking/
locking: Move the rwsem code to kernel/locking/
locking: Move the rtmutex code to kernel/locking/
locking: Move the semaphore core to kernel/locking/
locking: Move the spinlock code to kernel/locking/
locking: Move the lockdep code to kernel/locking/
locking: Move the mutex code to kernel/locking/
hung_task debugging: Add tracepoint to report the hang
x86/locking/kconfig: Update paravirt spinlock Kconfig description
lockstat: Report avg wait and hold times
lockdep, x86/alternatives: Drop ancient lockdep fixup message
...
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|
|
Linus Torvalds
|
f47671e2d8 |
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM updates from Russell King:
"Included in this series are:
1. BE8 (modern big endian) changes for ARM from Ben Dooks
2. big.Little support from Nicolas Pitre and Dave Martin
3. support for LPAE systems with all system memory above 4GB
4. Perf updates from Will Deacon
5. Additional prefetching and other performance improvements from Will.
6. Neon-optimised AES implementation fro Ard.
7. A number of smaller fixes scattered around the place.
There is a rather horrid merge conflict in tools/perf - I was never
notified of the conflict because it originally occurred between Will's
tree and other stuff. Consequently I have a resolution which Will
forwarded me, which I'll forward on immediately after sending this
mail.
The other notable thing is I'm expecting some build breakage in the
crypto stuff on ARM only with Ard's AES patches. These were merged
into a stable git branch which others had already pulled, so there's
little I can do about this. The problem is caused because these
patches have a dependency on some code in the crypto git tree - I
tried requesting a branch I can pull to resolve these, and all I got
each time from the crypto people was "we'll revert our patches then"
which would only make things worse since I still don't have the
dependent patches. I've no idea what's going on there or how to
resolve that, and since I can't split these patches from the rest of
this pull request, I'm rather stuck with pushing this as-is or
reverting Ard's patches.
Since it should "come out in the wash" I've left them in - the only
build problems they seem to cause at the moment are with randconfigs,
and since it's a new feature anyway. However, if by -rc1 the
dependencies aren't in, I think it'd be best to revert Ard's patches"
I resolved the perf conflict roughly as per the patch sent by Russell,
but there may be some differences. Any errors are likely mine. Let's
see how the crypto issues work out..
* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (110 commits)
ARM: 7868/1: arm/arm64: remove atomic_clear_mask() in "include/asm/atomic.h"
ARM: 7867/1: include: asm: use 'int' instead of 'unsigned long' for 'oldval' in atomic_cmpxchg().
ARM: 7866/1: include: asm: use 'long long' instead of 'u64' within atomic.h
ARM: 7871/1: amba: Extend number of IRQS
ARM: 7887/1: Don't smp_cross_call() on UP devices in arch_irq_work_raise()
ARM: 7872/1: Support arch_irq_work_raise() via self IPIs
ARM: 7880/1: Clear the IT state independent of the Thumb-2 mode
ARM: 7878/1: nommu: Implement dummy early_paging_init()
ARM: 7876/1: clear Thumb-2 IT state on exception handling
ARM: 7874/2: bL_switcher: Remove cpu_hotplug_driver_{lock,unlock}()
ARM: footbridge: fix build warnings for netwinder
ARM: 7873/1: vfp: clear vfp_current_hw_state for dying cpu
ARM: fix misplaced arch_virt_to_idmap()
ARM: 7848/1: mcpm: Implement cpu_kill() to synchronise on powerdown
ARM: 7847/1: mcpm: Factor out logical-to-physical CPU translation
ARM: 7869/1: remove unused XSCALE_PMU Kconfig param
ARM: 7864/1: Handle 64-bit memory in case of 32-bit phys_addr_t
ARM: 7863/1: Let arm_add_memory() always use 64-bit arguments
ARM: 7862/1: pcpu: replace __get_cpu_var_uses
ARM: 7861/1: cacheflush: consolidate single-CPU ARMv7 cache disabling code
...
|
|
|
Linus Torvalds
|
5cbb3d216e |
Merge branch 'akpm' (patches from Andrew Morton)
Merge first patch-bomb from Andrew Morton: "Quite a lot of other stuff is banked up awaiting further next->mainline merging, but this batch contains: - Lots of random misc patches - OCFS2 - Most of MM - backlight updates - lib/ updates - printk updates - checkpatch updates - epoll tweaking - rtc updates - hfs - hfsplus - documentation - procfs - update gcov to gcc-4.7 format - IPC" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (269 commits) ipc, msg: fix message length check for negative values ipc/util.c: remove unnecessary work pending test devpts: plug the memory leak in kill_sb ./Makefile: export initial ramdisk compression config option init/Kconfig: add option to disable kernel compression drivers: w1: make w1_slave::flags long to avoid memory corruption drivers/w1/masters/ds1wm.cuse dev_get_platdata() drivers/memstick/core/ms_block.c: fix unreachable state in h_msb_read_page() drivers/memstick/core/mspro_block.c: fix attributes array allocation drivers/pps/clients/pps-gpio.c: remove redundant of_match_ptr kernel/panic.c: reduce 1 byte usage for print tainted buffer gcov: reuse kbasename helper kernel/gcov/fs.c: use pr_warn() kernel/module.c: use pr_foo() gcov: compile specific gcov implementation based on gcc version gcov: add support for gcc 4.7 gcov format gcov: move gcov structs definitions to a gcc version specific file kernel/taskstats.c: return -ENOMEM when alloc memory fails in add_del_listener() kernel/taskstats.c: add nla_nest_cancel() for failure processing between nla_nest_start() and nla_nest_end() kernel/sysctl_binary.c: use scnprintf() instead of snprintf() ... |
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Linus Torvalds
|
dd1d1399f2 |
f2fs updates for v3.13
This patch-set includes the following major enhancement patches. o add a sysfs to control reclaiming free segments o enhance the f2fs global lock procedures o enhance the victim selection flow o wait for selected node blocks during fsync o add some tracepoints o add a config to remove abundant BUG_ONs The other bug fixes are as follows. o fix deadlock on acl operations o fix some bugs with respect to orphan inodes And, there are a bunch of cleanups. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJSgMZ/AAoJEEAUqH6CSFDSsL4P/Ri6GZyy5F0DGjAJElX825gO gthRZ1uq1OAXUYDOEy150CsFgIiWeu2MxiOV15UnmX893a5cXrf32afoa/Cqx8GG FVEYc5+dDdogezQCW6XSatQ4s7cDQDymyT2Mky4MJyAxhpYtvbpcyVI/OWdVcTwh pqdJfsfuOikbOOL6VU2B5dDKwjc+6lgntdv/eICzNCH9NqHv8kxmm+h3NfaqUVrW pK1irqsXrktcwLIrOH0c5ZpPcKPghJuw37oFpEw8MxYbTnpdrbLq4BKE/fRh8Fhf R+sQgEoWZriE1SISHmYjWdt87hnFCk3wysl61Z/zkOxnYKebRBrjEiudzxAHDIGY +I71ovpVCWe0uljdiTBpLQ/iN4p2fRMLjn7j1IsMzoG9yfVFduMaY70m1AOZI/7z 03QRpkmiRi7F8GYTSlPefsUUAnMYVDO6DzsyfHdxa8v+4UvWhSE4380L9DttNbCr 2/+NGRZ4kga6GSsMhdn2Bnm6i3TkMDJosu4USkv4qGR1SH1+S5dodwxfQdonPUZg 380kPkV7/gBYaMBSdrQFds3lh7g431gfYEfGSWt3vA14fFIWP7nIFpVIPGMM6/Sd GFe6gqZ2JLatqJnQNwEjPsBPPsiCAt6exbg86fTCvrS+oyQTiv44FNOWbz7iTrxw 5nZQfQHSMhKtux7rpM/N =Grs1 -----END PGP SIGNATURE----- Merge tag 'for-f2fs-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Pull f2fs updates from Jaegeuk Kim: "This patch-set includes the following major enhancement patches. - add a sysfs to control reclaiming free segments - enhance the f2fs global lock procedures - enhance the victim selection flow - wait for selected node blocks during fsync - add some tracepoints - add a config to remove abundant BUG_ONs The other bug fixes are as follows. - fix deadlock on acl operations - fix some bugs with respect to orphan inodes And, there are a bunch of cleanups" * tag 'for-f2fs-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (42 commits) f2fs: issue more large discard command f2fs: fix memory leak after kobject init failed in fill_super f2fs: cleanup waiting routine for writeback pages in cp f2fs: avoid to use a NULL point in destroy_segment_manager f2fs: remove unnecessary TestClearPageError when wait pages writeback f2fs: update f2fs document f2fs: avoid to wait all the node blocks during fsync f2fs: check all ones or zeros bitmap with bitops for better mount performance f2fs: change the method of calculating the number summary blocks f2fs: fix calculating incorrect free size when update xattr in __f2fs_setxattr f2fs: add an option to avoid unnecessary BUG_ONs f2fs: introduce CONFIG_F2FS_CHECK_FS for BUG_ON control f2fs: fix a deadlock during init_acl procedure f2fs: clean up acl flow for better readability f2fs: remove unnecessary segment bitmap updates f2fs: add tracepoint for vm_page_mkwrite f2fs: add tracepoint for set_page_dirty f2fs: remove redundant set_page_dirty from write_compacted_summaries f2fs: add reclaiming control by sysfs f2fs: introduce f2fs_balance_fs_bg for some background jobs ... |
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KOSAKI Motohiro
|
52c8f6a5ae |
mm: get rid of unnecessary overhead of trace_mm_page_alloc_extfrag()
In general, every tracepoint should be zero overhead if it is disabled. However, trace_mm_page_alloc_extfrag() is one of exception. It evaluate "new_type == start_migratetype" even if tracepoint is disabled. However, the code can be moved into tracepoint's TP_fast_assign() and TP_fast_assign exist exactly such purpose. This patch does it. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Mel Gorman <mgorman@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Jan Kara
|
c4a391b53a |
writeback: do not sync data dirtied after sync start
When there are processes heavily creating small files while sync(2) is
running, it can easily happen that quite some new files are created
between WB_SYNC_NONE and WB_SYNC_ALL pass of sync(2). That can happen
especially if there are several busy filesystems (remember that sync
traverses filesystems sequentially and waits in WB_SYNC_ALL phase on one
fs before starting it on another fs). Because WB_SYNC_ALL pass is slow
(e.g. causes a transaction commit and cache flush for each inode in
ext3), resulting sync(2) times are rather large.
The following script reproduces the problem:
function run_writers
{
for (( i = 0; i < 10; i++ )); do
mkdir $1/dir$i
for (( j = 0; j < 40000; j++ )); do
dd if=/dev/zero of=$1/dir$i/$j bs=4k count=4 &>/dev/null
done &
done
}
for dir in "$@"; do
run_writers $dir
done
sleep 40
time sync
Fix the problem by disregarding inodes dirtied after sync(2) was called
in the WB_SYNC_ALL pass. To allow for this, sync_inodes_sb() now takes
a time stamp when sync has started which is used for setting up work for
flusher threads.
To give some numbers, when above script is run on two ext4 filesystems
on simple SATA drive, the average sync time from 10 runs is 267.549
seconds with standard deviation 104.799426. With the patched kernel,
the average sync time from 10 runs is 2.995 seconds with standard
deviation 0.096.
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Fengguang Wu <fengguang.wu@intel.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
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Russell King
|
df762eccba |
Merge branch 'devel-stable' into for-next
Conflicts: arch/arm/include/asm/atomic.h arch/arm/include/asm/hardirq.h arch/arm/kernel/smp.c |
|
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Linus Torvalds
|
eeab517b68 |
sound updates for 3.13-rc1
There are no too intrusive changes in this update batch. The biggest
LOC is found in the new DICE driver, and other small changes are
scattered over the whole sound subtree (which is a common pattern).
Below are highlights:
- ALSA core:
* Memory allocation support with genpool
* Fix blocking in drain ioctl of compress_offload
- HD-audio:
* Improved AMD HDMI supports
* Intel HDMI detection improvements
* thinkpad_acpi mute-key integration
* New PCI ID, New ALC255,285,293 codecs, CX20952
- USB-audio:
* New buffer size management
* Clean up endpoint handling codes
- ASoC:
* Further work on the dmaengine helpers, including support for
configuring the parameters for DMA by reading the capabilities of
the DMA controller which removes some guesswork and magic numbers
from drivers.
* A refresh of the documentation.
* Conversions of many drivers to direct regmap API usage in order to
allow the ASoC level register I/O code to be removed, this will
hopefully be completed by v3.14.
* Support for using async register I/O in DAPM, reducing the time
taken to implement power transitions on systems that support it.
- Fireiwre: DICE driver
- Lots of small fixes for bugs reported by Coverity
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Merge tag 'sound-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"There are no too intrusive changes in this update batch. The biggest
LOC is found in the new DICE driver, and other small changes are
scattered over the whole sound subtree (which is a common pattern).
Below are highlights:
- ALSA core:
* Memory allocation support with genpool
* Fix blocking in drain ioctl of compress_offload
- HD-audio:
* Improved AMD HDMI supports
* Intel HDMI detection improvements
* thinkpad_acpi mute-key integration
* New PCI ID, New ALC255,285,293 codecs, CX20952
- USB-audio:
* New buffer size management
* Clean up endpoint handling codes
- ASoC:
* Further work on the dmaengine helpers, including support for
configuring the parameters for DMA by reading the capabilities of
the DMA controller which removes some guesswork and magic numbers
from drivers.
* A refresh of the documentation.
* Conversions of many drivers to direct regmap API usage in order
to allow the ASoC level register I/O code to be removed, this
will hopefully be completed by v3.14.
* Support for using async register I/O in DAPM, reducing the time
taken to implement power transitions on systems that support it.
- Firewire: DICE driver
- Lots of small fixes for bugs reported by Coverity"
* tag 'sound-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (382 commits)
ALSA: hda/realtek - Add new codec ALC255/ALC3234 UAJ supported
ALSA: hda - Apply MacBook fixups for CS4208 correctly
ASoC: fsl: imx-wm8962: remove an unneeded check
ASoC: fsl: imx-pcm-fiq: Remove unused 'runtime' variable
ALSA: hda/realtek - Make fixup regs persist after resume
ALSA: hda_intel: ratelimit "spurious response" message
ASoC: generic-dmaengine-pcm: Use SNDRV_DMA_TYPE_DEV_IRAM as default
ASoC: dapm: Use WARN_ON() instead of BUG_ON()
ASoC: wm_adsp: Fix BUG_ON() and WARN_ON() usages
ASoC: Replace BUG() with WARN()
ASoC: wm_hubs: Replace BUG() with WARN()
ASoC: wm8996: Replace BUG() with WARN()
ASoC: wm8962: Replace BUG() with WARN()
ASoC: wm8958: Replace BUG() with WARN()
ASoC: wm8904: Replace BUG() with WARN()
ASoC: wm8900: Replace BUG() with WARN()
ASoC: wm8350: Replace BUG() with WARN()
ASoC: txx9: Use WARN_ON() instead of BUG_ON()
ASoC: sh: Use WARN_ON() instead of BUG_ON()
ASoC: rcar: Use WARN_ON() instead of BUG_ON()
...
|
|
|
Linus Torvalds
|
f095ca6b31 |
spi: Updates for v3.13
As well as the usual driver updates and cleanups there's a few
improvements to the core here:
- The start of some improvements to factor out more of the SPI message
loop into the core. Right now this is just simplifying the code a
bit but hopefully next time around we'll also have managed to roll
out some noticable performance improvements which drivers can take
advantage of.
- Support for loading modules for ACPI enumerated SPI devices.
- Managed registration for SPI controllers.
- Helper for another common I/O pattern.
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Merge tag 'spi-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"As well as the usual driver updates and cleanups there's a few
improvements to the core here:
- The start of some improvements to factor out more of the SPI
message loop into the core. Right now this is just simplifying the
code a bit but hopefully next time around we'll also have managed
to roll out some noticable performance improvements which drivers
can take advantage of.
- Support for loading modules for ACPI enumerated SPI devices.
- Managed registration for SPI controllers.
- Helper for another common I/O pattern"
* tag 'spi-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (116 commits)
spi/hspi: add device tree support
spi: atmel: fix return value check in atmel_spi_probe()
spi: spi-imx: only enable the clocks when we start to transfer a message
spi/s3c64xx: Fix doubled clock disable on suspend
spi/s3c64xx: Do not ignore return value of spi_master_resume/suspend
spi: spi-mxs: Use u32 instead of uint32_t
spi: spi-mxs: Don't set clock for each xfer
spi: spi-mxs: Clean up setup_transfer function
spi: spi-mxs: Remove check of spi mode bits
spi: spi-mxs: Fix race in setup method
spi: spi-mxs: Remove bogus setting of ssp clk rate field
spi: spi-mxs: Remove full duplex check, spi core already does it
spi: spi-mxs: Fix chip select control bits in DMA mode
spi: spi-mxs: Fix extra CS pulses and read mode in multi-transfer messages
spi: spi-mxs: Change flag arguments in txrx functions to bit flags
spi: spi-mxs: Always clear INGORE_CRC, to keep CS asserted
spi: spi-mxs: Remove mxs_spi_enable and mxs_spi_disable
spi: spi-mxs: Always set LOCK_CS
spi/s3c64xx: Add missing pm_runtime_put on setup fail
spi/s3c64xx: Add missing pm_runtime_set_active() call in probe()
...
|
|
|
Linus Torvalds
|
39cf275a1a |
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler changes from Ingo Molnar:
"The main changes in this cycle are:
- (much) improved CONFIG_NUMA_BALANCING support from Mel Gorman, Rik
van Riel, Peter Zijlstra et al. Yay!
- optimize preemption counter handling: merge the NEED_RESCHED flag
into the preempt_count variable, by Peter Zijlstra.
- wait.h fixes and code reorganization from Peter Zijlstra
- cfs_bandwidth fixes from Ben Segall
- SMP load-balancer cleanups from Peter Zijstra
- idle balancer improvements from Jason Low
- other fixes and cleanups"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (129 commits)
ftrace, sched: Add TRACE_FLAG_PREEMPT_RESCHED
stop_machine: Fix race between stop_two_cpus() and stop_cpus()
sched: Remove unnecessary iteration over sched domains to update nr_busy_cpus
sched: Fix asymmetric scheduling for POWER7
sched: Move completion code from core.c to completion.c
sched: Move wait code from core.c to wait.c
sched: Move wait.c into kernel/sched/
sched/wait: Fix __wait_event_interruptible_lock_irq_timeout()
sched: Avoid throttle_cfs_rq() racing with period_timer stopping
sched: Guarantee new group-entities always have weight
sched: Fix hrtimer_cancel()/rq->lock deadlock
sched: Fix cfs_bandwidth misuse of hrtimer_expires_remaining
sched: Fix race on toggling cfs_bandwidth_used
sched: Remove extra put_online_cpus() inside sched_setaffinity()
sched/rt: Fix task_tick_rt() comment
sched/wait: Fix build breakage
sched/wait: Introduce prepare_to_wait_event()
sched/wait: Add ___wait_cond_timeout() to wait_event*_timeout() too
sched: Remove get_online_cpus() usage
sched: Fix race in migrate_swap_stop()
...
|
|
|
Linus Torvalds
|
70fdcb83db |
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar:
"The main RCU changes in this cycle are:
- Idle entry/exit changes, to throttle callback execution and other
refinements to speed up kbuild, primarily to address performance
issues located by Tibor Billes.
- Grace-period related changes, primarily to aid in debugging,
inspired by an -rt debugging session.
- Code reorganization moving RCU's source files into its own
kernel/rcu/ directory.
- RCU documentation updates
- Miscellaneous fixes.
Note, the following commit:
|
|
|
Kent Overstreet
|
48a915a87f |
bcache: Better full stripe scanning
The old scanning-by-stripe code burned too much CPU, this should be better. Signed-off-by: Kent Overstreet <kmo@daterainc.com> |
|
|
Kent Overstreet
|
220bb38c21 |
bcache: Break up struct search
With all the recent refactoring around struct btree op struct search has gotten rather large. But we can now easily break it up in a different way - we break out struct btree_insert_op which is for inserting data into the cache, and that's now what the copying gc code uses - struct search is now specific to request.c Signed-off-by: Kent Overstreet <kmo@daterainc.com> |
|
|
Ingo Molnar
|
c90423d1de |
Merge branch 'sched/core' into core/locking, to prepare the kernel/locking/ file move
Conflicts: kernel/Makefile There are conflicts in kernel/Makefile due to file moving in the scheduler tree - resolve them. Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
|
Ingo Molnar
|
ecf1f01432 |
Merge branch 'core/rcu' into core/locking, to prepare the kernel/locking/ file move
There are conflicts in lockdep.c due to RCU changes, and also the RCU tree changes kernel/Makefile - so pre-merge it to ease the moving of locking related .c files to kernel/locking/. Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
|
Ingo Molnar
|
97c53b402f |
Linux 3.12
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.15 (GNU/Linux) iQEcBAABAgAGBQJSdt9HAAoJEHm+PkMAQRiGnzEH/345Keg5dp+oKACnokBfzOtp V0p3g5EBsGtzEVnV+1B96trczDUtWdDFFr5GfGSj565NBQpFyc+iZC1mC99RDJCs WUquGFqlLMK2aV0SbKwCO4K1rJ5A0TRVj0ZRJOUJUY7jwNf5Qahny0WBVjO/8qAY UvJK1rktBClhKdH53YtpDHHgXBeZ2LOrzt1fQ/AMpujGbZauGvnLdNOli5r2kCFK jzoOgFLvX+PHU/5/d4/QyJPeQNPva5hjk5Ho9UuSJYhnFtPO3EkD4XZLcpcbNEJb LqBvbnZWm6CS435lfU1l93RqQa5xMO9ITk0oe4h69syTSHwWk9aJ+ZTc/4Up+t8= =57MC -----END PGP SIGNATURE----- Merge tag 'v3.12' into core/locking to pick up mutex upates Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
|
Tom Zanussi
|
f306cc82a9 |
tracing: Update event filters for multibuffer
The trace event filters are still tied to event calls rather than event files, which means you don't get what you'd expect when using filters in the multibuffer case: Before: # echo 'bytes_alloc > 8192' > /sys/kernel/debug/tracing/events/kmem/kmalloc/filter # cat /sys/kernel/debug/tracing/events/kmem/kmalloc/filter bytes_alloc > 8192 # mkdir /sys/kernel/debug/tracing/instances/test1 # echo 'bytes_alloc > 2048' > /sys/kernel/debug/tracing/instances/test1/events/kmem/kmalloc/filter # cat /sys/kernel/debug/tracing/events/kmem/kmalloc/filter bytes_alloc > 2048 # cat /sys/kernel/debug/tracing/instances/test1/events/kmem/kmalloc/filter bytes_alloc > 2048 Setting the filter in tracing/instances/test1/events shouldn't affect the same event in tracing/events as it does above. After: # echo 'bytes_alloc > 8192' > /sys/kernel/debug/tracing/events/kmem/kmalloc/filter # cat /sys/kernel/debug/tracing/events/kmem/kmalloc/filter bytes_alloc > 8192 # mkdir /sys/kernel/debug/tracing/instances/test1 # echo 'bytes_alloc > 2048' > /sys/kernel/debug/tracing/instances/test1/events/kmem/kmalloc/filter # cat /sys/kernel/debug/tracing/events/kmem/kmalloc/filter bytes_alloc > 8192 # cat /sys/kernel/debug/tracing/instances/test1/events/kmem/kmalloc/filter bytes_alloc > 2048 We'd like to just move the filter directly from ftrace_event_call to ftrace_event_file, but there are a couple cases that don't yet have multibuffer support and therefore have to continue using the current event_call-based filters. For those cases, a new USE_CALL_FILTER bit is added to the event_call flags, whose main purpose is to keep the old behavior for those cases until they can be updated with multibuffer support; at that point, the USE_CALL_FILTER flag (and the new associated call_filter_check_discard() function) can go away. The multibuffer support also made filter_current_check_discard() redundant, so this change removes that function as well and replaces it with filter_check_discard() (or call_filter_check_discard() as appropriate). Link: http://lkml.kernel.org/r/f16e9ce4270c62f46b2e966119225e1c3cca7e60.1382620672.git.tom.zanussi@linux.intel.com Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
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Mark Brown
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ca89bc248e | Merge remote-tracking branch 'asoc/fix/ak4642' into asoc-linus | |
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Joerg Roedel
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bb51eeee5a | Merge branches 'iommu/fixes', 'tracing', 'core', 'arm/tegra', 'x86/vt-d', 'arm/smmu' and 'arm/shmobile' into next | |
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Ingo Molnar
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fb10d5b7ef |
Merge branch 'linus' into sched/core
Resolve cherry-picking conflicts:
Conflicts:
mm/huge_memory.c
mm/memory.c
mm/mprotect.c
See this upstream merge commit for more details:
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Oleg Nesterov
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6a716c90a5 |
hung_task debugging: Add tracepoint to report the hang
Currently check_hung_task() prints a warning if it detects the problem, but it is not convenient to watch the system logs if user-space wants to be notified about the hang. Add the new trace_sched_process_hang() into check_hung_task(), this way a user-space monitor can easily wait for the hang and potentially resolve a problem. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Dave Sullivan <dsulliva@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/20131019161828.GA7439@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Jaegeuk Kim
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e943a10d94 |
f2fs: add tracepoint for vm_page_mkwrite
This patch adds a tracepoint for f2fs_vm_page_mkwrite. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> |
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Jaegeuk Kim
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26c6b88799 |
f2fs: add tracepoint for set_page_dirty
This patch adds a tracepoint for set_page_dirty. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> |
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Mark Brown
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d6ee232c7f | Merge remote-tracking branch 'asoc/topic/core' into asoc-next | |
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Ingo Molnar
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0e95c69bde |
Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney. Major changes: " 1. Update RCU documentation. These were posted to LKML at http://article.gmane.org/gmane.linux.kernel/1566994. 2. Miscellaneous fixes. These were posted to LKML at http://article.gmane.org/gmane.linux.kernel/1567027. 3. Grace-period-related changes, primarily to aid in debugging, inspired by a -rt debugging session. These were posted to LKML at http://article.gmane.org/gmane.linux.kernel/1567076. 4. Idle entry/exit changes, primarily to address issues located by Tibor Billes. These were posted to LKML at http://article.gmane.org/gmane.linux.kernel/1567096. 5. Code reorganization moving RCU's source files from kernel to kernel/rcu. This was posted to LKML at http://article.gmane.org/gmane.linux.kernel/1577344." Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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chai wen
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f2e106692d |
KVM: Drop FOLL_GET in GUP when doing async page fault
Page pinning is not mandatory in kvm async page fault processing since after async page fault event is delivered to a guest it accesses page once again and does its own GUP. Drop the FOLL_GET flag in GUP in async_pf code, and do some simplifying in check/clear processing. Suggested-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Gu zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: chai wen <chaiw.fnst@cn.fujitsu.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> |
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Mark Brown
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b158935f70 |
spi: Provide common spi_message processing loop
The loops which SPI controller drivers use to process the list of transfers in a spi_message are typically very similar and have some error prone areas such as the handling of /CS. Help simplify drivers by factoring this code out into the core - if drivers provide a transfer_one() function instead of a transfer_one_message() function the core will handle processing at the message level. /CS can be controlled by either setting cs_gpio or providing a set_cs function. If this is not possible for hardware reasons then both can be omitted and the driver should continue to implement manual /CS handling. This is a first step in refactoring and it is expected that there will be further enhancements, for example factoring out of the mapping of transfers for DMA and the initiation and completion of interrupt driven transfers. Signed-off-by: Mark Brown <broonie@linaro.org> |
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Theodore Ts'o
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f80bbd8b92 |
random: convert DEBUG_ENT to tracepoints
Instead of using the random driver's ad-hoc DEBUG_ENT() mechanism, use tracepoints instead. This allows for a much more fine-grained control of which debugging mechanism which a developer might need, and unifies the debugging messages with all of the existing tracepoints. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> |
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Theodore Ts'o
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6265e169cd |
random: push extra entropy to the output pools
As the input pool gets filled, start transfering entropy to the output pools until they get filled. This allows us to use the output pools to store more system entropy. Waste not, want not.... Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> |
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Theodore Ts'o
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5910895f0e |
random: fix the tracepoint for get_random_bytes(_arch)
Fix a problem where get_random_bytes_arch() was calling the tracepoint get_random_bytes(). So add a new tracepoint for get_random_bytes_arch(), and make get_random_bytes() and get_random_bytes_arch() call their correct tracepoint. Also, add a new tracepoint for add_device_randomness() Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> |
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Ingo Molnar
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37bf06375c |
Linux 3.12-rc4
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQEcBAABAgAGBQJSUc9zAAoJEHm+PkMAQRiG9DMH/AtpuAF6LlMRPjrCeuJQ1pyh T0IUO+CsLKO6qtM5IyweP8V6zaasNjIuW1+B6IwVIl8aOrM+M7CwRiKvpey26ldM I8G2ron7hqSOSQqSQs20jN2yGAqQGpYIbTmpdGLAjQ350NNNvEKthbP5SZR5PAmE UuIx5OGEkaOyZXvCZJXU9AZkCxbihlMSt2zFVxybq2pwnGezRUYgCigE81aeyE0I QLwzzMVdkCxtZEpkdJMpLILAz22jN4RoVDbXRa2XC7dA9I2PEEXI9CcLzqCsx2Ii 8eYS+no2K5N2rrpER7JFUB2B/2X8FaVDE+aJBCkfbtwaYTV9UYLq3a/sKVpo1Cs= =xSFJ -----END PGP SIGNATURE----- Merge tag 'v3.12-rc4' into sched/core Merge Linux v3.12-rc4 to fix a conflict and also to refresh the tree before applying more scheduler patches. Conflicts: arch/avr32/include/asm/Kbuild Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Roland Dreier
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2053a1db41 |
target: Fix assignment of LUN in tracepoints
The unpacked_lun field in the SCSI target tracepoints should be initialized with cmd->orig_fe_lun rather than cmd->se_lun->unpacked_lun for two reasons: - most importantly, if we are in the cmd_complete tracepoint returning a check condition due to no LUN found, cmd->se_lun will be NULL and we'll crash trying to dereference it. - also, in any case, cmd->se_lun->unpacked_lun is an internal index into the target's internal set of LUNs; cmd->orig_fe_lun is much more useful and interesting, since it's the value the initiator actually sent. Signed-off-by: Roland Dreier <roland@purestorage.com> Cc: <stable@vger.kernel.org> # 3.11+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> |
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Mark Brown
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31a2c46cd9 |
spi/trace: Trace length of SPI messages on completion
Signed-off-by: Mark Brown <broonie@linaro.org> |
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Mark Brown
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56ec1978ff |
spi: Provide trace points for message processing
Provide tracepoints for the lifecycle of a message from submission to completion and for the active time for masters to help with performance analysis of SPI I/O. Signed-off-by: Mark Brown <broonie@linaro.org> |