Commit Graph

611069 Commits

Author SHA1 Message Date
Linus Torvalds 71e9dcc001 Fix a boot failure on systems with non-contiguous NUMA id's.
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Merge tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random

Pull random driver fix from Ted Ts'o:
 "Fix a boot failure on systems with non-contiguous NUMA id's"

* tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
  random: use for_each_online_node() to iterate over NUMA nodes
2016-07-28 13:46:25 -07:00
Linus Torvalds 6784725ab0 Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs updates from Al Viro:
 "Assorted cleanups and fixes.

  Probably the most interesting part long-term is ->d_init() - that will
  have a bunch of followups in (at least) ceph and lustre, but we'll
  need to sort the barrier-related rules before it can get used for
  really non-trivial stuff.

  Another fun thing is the merge of ->d_iput() callers (dentry_iput()
  and dentry_unlink_inode()) and a bunch of ->d_compare() ones (all
  except the one in __d_lookup_lru())"

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (26 commits)
  fs/dcache.c: avoid soft-lockup in dput()
  vfs: new d_init method
  vfs: Update lookup_dcache() comment
  bdev: get rid of ->bd_inodes
  Remove last traces of ->sync_page
  new helper: d_same_name()
  dentry_cmp(): use lockless_dereference() instead of smp_read_barrier_depends()
  vfs: clean up documentation
  vfs: document ->d_real()
  vfs: merge .d_select_inode() into .d_real()
  unify dentry_iput() and dentry_unlink_inode()
  binfmt_misc: ->s_root is not going anywhere
  drop redundant ->owner initializations
  ufs: get rid of redundant checks
  orangefs: constify inode_operations
  missed comment updates from ->direct_IO() prototype change
  file_inode(f)->i_mapping is f->f_mapping
  trim fsnotify hooks a bit
  9p: new helper - v9fs_parent_fid()
  debugfs: ->d_parent is never NULL or negative
  ...
2016-07-28 12:59:05 -07:00
Vineet Gupta 3925a16ae9 ARC: mm: don't loose PTE_SPECIAL in pte_modify()
LTP madvise05 was generating mm splat

| [ARCLinux]# /sd/ltp/testcases/bin/madvise05
| BUG: Bad page map in process madvise05  pte:80e08211 pmd:9f7d4000
| page:9fdcfc90 count:1 mapcount:-1 mapping:  (null) index:0x0 flags: 0x404(referenced|reserved)
| page dumped because: bad pte
| addr:200b8000 vm_flags:00000070 anon_vma:  (null) mapping:  (null) index:1005c
| file:  (null) fault:  (null) mmap:  (null) readpage:  (null)
| CPU: 2 PID: 6707 Comm: madvise05

And for newer kernels, the system was rendered unusable afterwards.

The problem was mprotect->pte_modify() clearing PTE_SPECIAL (which is
set to identify the special zero page wired to the pte).
When pte was finally unmapped, special casing for zero page was not
done, and instead it was treated as a "normal" page, tripping on the
map counts etc.

This fixes ARC STAR 9001053308

Cc: <stable@vger.kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-07-28 12:38:17 -07:00
Linus Torvalds 554828ee0d Merge branch 'salted-string-hash'
This changes the vfs dentry hashing to mix in the parent pointer at the
_beginning_ of the hash, rather than at the end.

That actually improves both the hash and the code generation, because we
can move more of the computation to the "static" part of the dcache
setup, and do less at lookup runtime.

It turns out that a lot of other hash users also really wanted to mix in
a base pointer as a 'salt' for the hash, and so the slightly extended
interface ends up working well for other cases too.

Users that want a string hash that is purely about the string pass in a
'salt' pointer of NULL.

* merge branch 'salted-string-hash':
  fs/dcache.c: Save one 32-bit multiply in dcache lookup
  vfs: make the string hashes salt the hash
2016-07-28 12:26:31 -07:00
Benjamin Coddington 944171cbf4 pNFS: Actively set attributes as invalid if LAYOUTCOMMIT is outstanding
A LAYOUTCOMMIT then subsequent GETATTR may both return the same attributes,
and in that case NFS_INO_INVALID_ATTR is never set on the second pass
through nfs_update_inode().  The existing check to skip the clearing of
NFS_INO_INVALID_ATTR if a LAYOUTCOMMIT is outstanding does not help in this
case (see commit 10b7e9ad4488: "pNFS: Don't mark the inode as revalidated
if a LAYOUTCOMMIT is outstanding").  We know that if a LAYOUTCOMMIT is
outstanding then attributes will need upating, so always set
NFS_INO_INVALID_ATTR.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2016-07-28 14:49:08 -04:00
Richard Cochran 4fae16dffb timers/core: Correct callback order during CPU hot plug
On the tear-down path, the dead CPU callback for the timers was
misplaced within the 'cpuhp_state' enumeration.  There is a hidden
dependency between the timers and block multiqueue.  The timers
callback must happen before the block multiqueue callback otherwise a
RCU stall occurs.

Move the timers callback to the proper place in the state machine.

Reported-and-tested-by: Jon Hunter <jonathanh@nvidia.com>
Reported-by: kbuild test robot <lkp@intel.com>
Fixes: 24f73b9971 ("timers/core: Convert to hotplug state machine")
Signed-off-by: Richard Cochran <rcochran@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: John Stultz <john.stultz@linaro.org>
Cc: rt@linutronix.de
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1469610498-25914-1-git-send-email-rcochran@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-28 18:56:22 +02:00
Shaohua Li 3f35e210ed Merge branch 'mymd/for-next' into mymd/for-linus 2016-07-28 09:34:14 -07:00
Shaohua Li 5d8817833c MD: fix null pointer deference
The md device might not have personality (for example, ddf raid array). The
issue is introduced by 8430e7e0af9a15(md: disconnect device from personality
before trying to remove it)

Reported-by: kernel test robot <xiaolong.ye@intel.com>
Signed-off-by: Shaohua Li <shli@fb.com>
2016-07-28 09:06:34 -07:00
Russell King 5f5a00eaa1 Merge branches 'cpuidle', 'fixes' and 'misc' into for-linus 2016-07-28 15:28:11 +01:00
Jiri Kosina 8c2f421c1f Merge branch 'for-4.8/hid-led' into for-linus
Conflicts:
	drivers/hid/hid-thingm.c
2016-07-28 10:49:23 +02:00
Jiri Kosina e82a82c19f Merge branches 'for-4.8/alps', 'for-4.8/apple', 'for-4.8/i2c-hid', 'for-4.8/uhid-offload-hid-device-add' and 'for-4.8/upstream' into for-linus 2016-07-28 10:48:15 +02:00
Dan Carpenter 344e3c7734 sparc: serial: sunhv: fix a double lock bug
We accidentally take the "port->lock" twice in a row.  This old code
was supposed to be deleted.

Fixes: e58e241c17 ('sparc: serial: Clean up the locking for -rt')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-27 22:54:52 -07:00
Dan Carpenter fa1608285b sparc32: off by ones in BUG_ON()
Smatch complains that these tests are off by one, which is true but not
life threatening.

	arch/sparc/kernel/irq_32.c:169 irq_link()
	error: buffer overflow 'irq_map' 384 <= 384

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-27 22:53:17 -07:00
Vinod Koul 4bb0439626 Merge branch 'topic/dmaengine_cleanups' into for-linus 2016-07-28 10:10:37 +05:30
Pavel Shilovsky 7893242e24 CIFS: Fix a possible invalid memory access in smb2_query_symlink()
During following a symbolic link we received err_buf from SMB2_open().
While the validity of SMB2 error response is checked previously
in smb2_check_message() a symbolic link payload is not checked at all.
Fix it by adding such checks.

Cc: Dan Carpenter <dan.carpenter@oracle.com>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
2016-07-27 22:55:56 -05:00
Aurelien Aptel a6b5058faf fs/cifs: make share unaccessible at root level mountable
if, when mounting //HOST/share/sub/dir/foo we can query /sub/dir/foo but
not any of the path components above:

- store the /sub/dir/foo prefix in the cifs super_block info
- in the superblock, set root dentry to the subpath dentry (instead of
  the share root)
- set a flag in the superblock to remember it
- use prefixpath when building path from a dentry

fixes bso#8950

Signed-off-by: Aurelien Aptel <aaptel@suse.com>
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
2016-07-27 22:50:55 -05:00
Theodore Ts'o 59b8d4f1f5 random: use for_each_online_node() to iterate over NUMA nodes
This fixes a crash on s390 with fake NUMA enabled.

Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Fixes: 1e7f583af6 ("random: make /dev/urandom scalable for silly userspace programs")
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2016-07-27 23:30:25 -04:00
Linus Torvalds 194dc870a5 Add braces to avoid "ambiguous ‘else’" compiler warnings
Some of our "for_each_xyz()" macro constructs make gcc unhappy about
lack of braces around if-statements inside or outside the loop, because
the loop construct itself has a "if-then-else" statement inside of it.

The resulting warnings look something like this:

  drivers/gpu/drm/i915/i915_debugfs.c: In function ‘i915_dump_lrc’:
  drivers/gpu/drm/i915/i915_debugfs.c:2103:6: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses]
     if (ctx != dev_priv->kernel_context)
        ^

even if the code itself is fine.

Since the warning is fairly easy to avoid by adding a braces around the
if-statement near the for_each_xyz() construct, do so, rather than
disabling the otherwise potentially useful warning.

(The if-then-else statements used in the "for_each_xyz()" constructs are
designed to be inherently safe even with no braces, but in this case
it's quite understandable that gcc isn't really able to tell that).

This finally leaves the standard "allmodconfig" build with just a
handful of remaining warnings, so new and valid warnings hopefully will
stand out.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-07-27 20:03:31 -07:00
Stephen Rothwell fbef66f0ad powerpc/mm: Parenthesise IS_ENABLED() in if condition
Currently IS_ENABLED() produces an expression surrounded by parentheses,
which allows this code to compile, generating eg:

    else if (1 || 0)
        hpte_init_native();

However a change to the macro in the kbuild tree will break this in
future by removing the parentheses.

Fixes: 7353644fa9 ("powerpc/mm: Fix build break when PPC_NATIVE=n")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-07-28 12:39:15 +10:00
Linus Torvalds 124a3d88fa Disable "frame-address" warning
Newer versions of gcc warn about the use of __builtin_return_address()
with a non-zero argument when "-Wall" is specified:

  kernel/trace/trace_irqsoff.c: In function ‘stop_critical_timings’:
  kernel/trace/trace_irqsoff.c:433:86: warning: calling ‘__builtin_return_address’ with a nonzero argument is unsafe [-Wframe-address]
     stop_critical_timing(CALLER_ADDR0, CALLER_ADDR1);
  [ .. repeats a few times for other similar cases .. ]

It is true that a non-zero argument is somewhat dangerous, and we do not
actually have very many uses of that in the kernel - but the ftrace code
does use it, and as Stephen Rostedt says:

 "We are well aware of the danger of using __builtin_return_address() of
  > 0.  In fact that's part of the reason for having the "thunk" code in
  x86 (See arch/x86/entry/thunk_{64,32}.S).  [..] it adds extra frames
  when tracking irqs off sections, to prevent __builtin_return_address()
  from accessing bad areas.  In fact the thunk_32.S states: 'Trampoline to
  trace irqs off.  (otherwise CALLER_ADDR1 might crash)'."

For now, __builtin_return_address() with a non-zero argument is the best
we can do, and the warning is not helpful and can end up making people
miss other warnings for real problems.

So disable the frame-address warning on compilers that need it.

Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-07-27 19:03:04 -07:00
David S. Miller 4f6deb8cba sparc: Don't leak context bits into thread->fault_address
On pre-Niagara systems, we fetch the fault address on data TLB
exceptions from the TLB_TAG_ACCESS register.  But this register also
contains the context ID assosciated with the fault in the low 13 bits
of the register value.

This propagates into current_thread_info()->fault_address and can
cause trouble later on.

So clear the low 13-bits out of the TLB_TAG_ACCESS value in the cases
where it matters.

Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-27 17:50:26 -07:00
Linus Torvalds 8448cefe49 HSI changes for the v4.8 series
* proper runtime pm support for omap-ssi and ssi-protocol
 * misc. fixes
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Merge tag 'hsi-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi

Pull HSI updates from Sebastian Reichel:

 - proper runtime pm support for omap-ssi and ssi-protocol

 - misc fixes

* tag 'hsi-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi: (24 commits)
  HSI: omap_ssi: drop pm_runtime_irq_safe
  HSI: omap_ssi_port: use rpm autosuspend API
  HSI: omap_ssi: call msg->complete() from process context
  HSI: omap_ssi_port: ensure clocks are kept enabled during transfer
  HSI: omap_ssi_port: replace pm_runtime_put_sync with non-sync variant
  HSI: omap_ssi_port: avoid calling runtime_pm_*_sync inside spinlock
  HSI: omap_ssi_port: avoid pm_runtime_get_sync in ssi_start_dma and ssi_start_pio
  HSI: omap_ssi_port: switch to threaded pio irq
  HSI: omap_ssi_core: remove pm_runtime_get_sync call from tasklet
  HSI: omap_ssi_core: use pm_runtime_put instead of pm_runtime_put_sync
  HSI: omap_ssi_port: prepare start_tx/stop_tx for blocking pm_runtime calls
  HSI: core: switch port event notifier from atomic to blocking
  HSI: omap_ssi_port: replace wkin_cken with atomic bitmap operations
  HSI: omap_ssi: convert cawake irq handler to thread
  HSI: ssi_protocol: fix ssip_xmit invocation
  HSI: ssi_protocol: replace spin_lock with spin_lock_bh
  HSI: ssi_protocol: avoid ssi_waketest call with held spinlock
  HSI: omap_ssi: do not reset module
  HSI: omap_ssi_port: remove useless newline
  hsi: Only descend into hsi directory when CONFIG_HSI is set
  ...
2016-07-27 15:18:53 -07:00
Linus Torvalds 818e607b57 A number of improvements for the /dev/random driver; the most
important is the use of a ChaCha20-based CRNG for /dev/urandom, which
 is faster, more efficient, and easier to make scalable for
 silly/abusive userspace programs that want to read from /dev/urandom
 in a tight loop on NUMA systems.
 
 This set of patches also improves entropy gathering on VM's running on
 Microsoft Azure, and will take advantage of a hw random number
 generator (if present) to initialize the /dev/urandom pool.
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Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random

Pull random driver updates from Ted Ts'o:
 "A number of improvements for the /dev/random driver; the most
  important is the use of a ChaCha20-based CRNG for /dev/urandom, which
  is faster, more efficient, and easier to make scalable for
  silly/abusive userspace programs that want to read from /dev/urandom
  in a tight loop on NUMA systems.

  This set of patches also improves entropy gathering on VM's running on
  Microsoft Azure, and will take advantage of a hw random number
  generator (if present) to initialize the /dev/urandom pool"

(It turns out that the random tree hadn't been in linux-next this time
around, because it had been dropped earlier as being too quiet.  Oh
well).

* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
  random: strengthen input validation for RNDADDTOENTCNT
  random: add backtracking protection to the CRNG
  random: make /dev/urandom scalable for silly userspace programs
  random: replace non-blocking pool with a Chacha20-based CRNG
  random: properly align get_random_int_hash
  random: add interrupt callback to VMBus IRQ handler
  random: print a warning for the first ten uninitialized random users
  random: initialize the non-blocking pool via add_hwgenerator_randomness()
2016-07-27 15:11:55 -07:00
Linus Torvalds ff9a082fda media updates for v4.8-rc1
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Merge tag 'media/v4.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media documentation updates from Mauro Carvalho Chehab:
 "This patch series does the conversion of all media documentation stuff
  to Restrutured Text markup format and add them to the
  Documentation/index.rst file.

  The media documentation was grouped into 4 books:

    - media uAPI
    - media kAPI
    - V4L driver-specific documentation
    - DVB driver-specific documentation

  It also contains several documentation improvements and one fixup
  patch for a core issue with cropcap.

  PS.  After this patch series, the media DocBook is deprecated and
  should be removed.  I'll add such patch on a future pull request"

* tag 'media/v4.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (322 commits)
  [media] cx23885-cardlist.rst: add a new card
  [media] doc-rst: add some needed escape codes
  [media] doc-rst: kapi: use :c:func: instead of :cpp:func
  doc-rst: kernel-doc: fix a change introduced by mistake
  [media] v4l2-ioctl.h add debug info for struct v4l2_ioctl_ops
  [media] dvb_ringbuffer.h: some documentation improvements
  [media] v4l2-ctrls.h: fully document the header file
  [media] doc-rst: Fix some typedef ugly warnings
  [media] doc-rst: reorganize the kAPI v4l2 chapters
  [media] rename v4l2-framework.rst to v4l2-intro.rst
  [media] move V4L2 clocks to a separate .rst file
  [media] v4l2-fh.rst: add cross references and markups
  [media] v4l2-fh.rst: add fh contents from v4l2-framework.rst
  [media] v4l2-fh.h: add documentation for it
  [media] v4l2-event.rst: add cross-references and markups
  [media] v4l2-event.h: document all functions
  [media] v4l2-event.rst: add text from v4l2-framework.rst
  [media] v4l2-framework.rst: remove videobuf quick chapter
  [media] v4l2-dev: add cross-references and improve markup
  [media] doc-rst: move v4l2-dev doc to a separate file
  ...
2016-07-27 14:58:31 -07:00
Linus Torvalds 6a492b0f23 SCSI misc on 20160727
This update includes the usual round of driver updates (fcoe, lpfc,
 ufs, qla2xxx, hisi_sas).  The most important other change is removing
 the flag to allow non-blk_mq on a per host basis (it's unused); there
 is still a global module parameter for all of SCSI just in case.  The
 rest are an assortment of minor fixes and typo updates.
 
 Signed-off-by: James Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This update includes the usual round of driver updates (fcoe, lpfc,
  ufs, qla2xxx, hisi_sas).  The most important other change is removing
  the flag to allow non-blk_mq on a per host basis (it's unused); there
  is still a global module parameter for all of SCSI just in case.

  The rest are an assortment of minor fixes and typo updates"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (101 commits)
  scsi:libsas: fix oops caused by assigning a freed task to ->lldd_task
  fnic: pci_dma_mapping_error() doesn't return an error code
  scsi: lpfc: avoid harmless comparison warning
  fcoe: implement FIP VLAN responder
  fcoe: Rename 'fip_frame' to 'fip_vn2vn_notify_frame'
  lpfc: call lpfc_sli_validate_fcp_iocb() with the hbalock held
  scsi: ufs: remove unnecessary goto label
  hpsa: change hpsa_passthru_ioctl timeout
  hpsa: correct skipping masked peripherals
  qla2xxx: Update driver version to 8.07.00.38-k
  qla2xxx: Fix BBCR offset
  qla2xxx: Fix duplicate message id.
  qla2xxx: Disable the adapter and skip error recovery in case of register disconnect.
  qla2xxx: Separate ISP type bits out from device type.
  qla2xxx: Correction to function qla26xx_dport_diagnostics().
  qla2xxx: Add support to handle Loop Init error Asynchronus event.
  qla2xxx: Let DPORT be enabled purely by nvram.
  qla2xxx: Add bsg interface to support statistics counter reset.
  qla2xxx: Add bsg interface to support D_Port Diagnostics.
  qla2xxx: Check for device state before unloading the driver.
  ...
2016-07-27 14:48:37 -07:00
Linus Torvalds d85486d471 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
 "Updates for the input subsystem.  This contains the following new
  drivers promised in the last merge window:

   - driver for touchscreen controller found in Surface 3
   - driver for Pegasus Notetaker tablet
   - driver for Atmel Captouch Buttons
   - driver for Raydium I2C touchscreen controllers
   - powerkey driver for HISI 65xx SoC

  plus a few fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (40 commits)
  Input: tty/vt/keyboard - use memdup_user()
  Input: pegasus_notetaker - set device mode in reset_resume() if in use
  Input: pegasus_notetaker - cancel workqueue's work in suspend()
  Input: pegasus_notetaker - fix usb_autopm calls to be balanced
  Input: pegasus_notetaker - handle usb control msg errors
  Input: wacom_w8001 - handle errors from input_mt_init_slots()
  Input: wacom_w8001 - resolution wasn't set for ABS_MT_POSITION_X/Y
  Input: pixcir_ts - add support for axis inversion / swapping
  Input: icn8318 - use of_touchscreen helpers for inverting / swapping axes
  Input: edt-ft5x06 - add support for inverting / swapping axes
  Input: of_touchscreen - add support for inverted / swapped axes
  Input: synaptics-rmi4 - use the RMI_F11_REL_BYTES define in rmi_f11_rel_pos_report
  Input: synaptics-rmi4 - remove unneeded variable
  Input: synaptics-rmi4 - remove pointer to rmi_function in f12_data
  Input: synaptics-rmi4 - support regulator supplies
  Input: raydium_i2c_ts - check CRC of incoming packets
  Input: xen-kbdfront - prefer xenbus_write() over xenbus_printf() where possible
  Input: fix a double word "is is" in include/linux/input.h
  Input: add powerkey driver for HISI 65xx SoC
  Input: apanel - spelling mistake - "skiping" -> "skipping"
  ...
2016-07-27 14:30:41 -07:00
Linus Torvalds 66304207cd Merge branch 'i2c/for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
 "Here is the I2C pull request for 4.8:

   - the core and i801 driver gained support for SMBus Host Notify

   - core support for more than one address in DT

   - i2c_add_adapter() has now better error messages.  We can remove all
     error messages from drivers calling it as a next step.

   - bigger updates to rk3x driver to support rk3399 SoC

   - the at24 eeprom driver got refactored and can now read special
     variants with unique serials or fixed MAC addresses.

  The rest is regular driver updates and bugfixes"

* 'i2c/for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (66 commits)
  i2c: i801: use IS_ENABLED() instead of checking for built-in or module
  Documentation: i2c: slave: give proper example for pm usage
  Documentation: i2c: slave: describe buffer problems a bit better
  i2c: bcm2835: Don't complain on -EPROBE_DEFER from getting our clock
  i2c: i2c-smbus: drop useless stubs
  i2c: efm32: fix a failure path in efm32_i2c_probe()
  Revert "i2c: core: Cleanup I2C ACPI namespace"
  Revert "i2c: core: Add function for finding the bus speed from ACPI"
  i2c: Update the description of I2C_SMBUS
  i2c: i2c-smbus: fix i2c_handle_smbus_host_notify documentation
  eeprom: at24: tweak the loop_until_timeout() macro
  eeprom: at24: add support for at24mac series
  eeprom: at24: support reading the serial number for 24csxx
  eeprom: at24: platform_data: use BIT() macro
  eeprom: at24: split at24_eeprom_write() into specialized functions
  eeprom: at24: split at24_eeprom_read() into specialized functions
  eeprom: at24: hide the read/write loop behind a macro
  eeprom: at24: call read/write functions via function pointers
  eeprom: at24: coding style fixes
  eeprom: at24: move at24_read() below at24_eeprom_write()
  ...
2016-07-27 14:19:25 -07:00
Linus Torvalds 7ae0ae4a02 spi: Updates for v4.8
Quite a lot of cleanup and maintainence work going on this release in
 various drivers, and also a fix for a nasty locking issue in the core:
 
  - A fix for locking issues when external drivers explicitly locked the
    bus with spi_bus_lock() - we were using the same lock to both control
    access to the physical bus in multi-threaded I/O operations and
    exclude multiple callers.  Confusion between these two caused us to
    have scenarios where we were dropping locks.  These are fixed by
    splitting into two separate locks like should have been done
    originally, making everything much clearer and correct.
  - Support for DMA in spi_flash_read().
  - Support for instantiating spidev on ACPI systems, including some test
    devices used in Windows validation.
  - Use of the core DMA mapping functionality in the McSPI driver.
  - Start of support for ThunderX SPI controllers, involving a very big
    set of changes to the Cavium driver.
  - Support for Braswell, Exynos 5433, Kaby Lake, Merrifield, RK3036,
    RK3228, RK3368 controllers.
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Merge tag 'spi-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "Quite a lot of cleanup and maintainence work going on this release in
  various drivers, and also a fix for a nasty locking issue in the core:

   - A fix for locking issues when external drivers explicitly locked
     the bus with spi_bus_lock() - we were using the same lock to both
     control access to the physical bus in multi-threaded I/O operations
     and exclude multiple callers.

     Confusion between these two caused us to have scenarios where we
     were dropping locks.  These are fixed by splitting into two
     separate locks like should have been done originally, making
     everything much clearer and correct.

   - Support for DMA in spi_flash_read().

   - Support for instantiating spidev on ACPI systems, including some
     test devices used in Windows validation.

   - Use of the core DMA mapping functionality in the McSPI driver.

   - Start of support for ThunderX SPI controllers, involving a very big
     set of changes to the Cavium driver.

   - Support for Braswell, Exynos 5433, Kaby Lake, Merrifield, RK3036,
     RK3228, RK3368 controllers"

* tag 'spi-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (64 commits)
  spi: Split bus and I/O locking
  spi: octeon: Split driver into Octeon specific and common parts
  spi: octeon: Move include file from arch/mips to drivers/spi
  spi: octeon: Put register offsets into a struct
  spi: octeon: Store system clock freqency in struct octeon_spi
  spi: octeon: Convert driver to use readq()/writeq() functions
  spi: pic32-sqi: fixup wait_for_completion_timeout return handling
  spi: pic32: fixup wait_for_completion_timeout return handling
  spi: rockchip: limit transfers to (64K - 1) bytes
  spi: xilinx: Return IRQ_NONE if no interrupts were detected
  spi: xilinx: Handle errors from platform_get_irq()
  spi: s3c64xx: restore removed comments
  spi: s3c64xx: add Exynos5433 compatible for ioclk handling
  spi: s3c64xx: use error code from clk_prepare_enable()
  spi: s3c64xx: rename goto labels to meaningful names
  spi: s3c64xx: document the clocks and the clock-name property
  spi: s3c64xx: add exynos5433 spi compatible
  spi: s3c64xx: fix reference leak to master in s3c64xx_spi_remove()
  spi: spi-sh: Remove deprecated create_singlethread_workqueue
  spi: spi-topcliff-pch: Remove deprecated create_singlethread_workqueue
  ...
2016-07-27 14:11:43 -07:00
Linus Torvalds 607e11ab66 New LED class driver:
- LED driver for TI LP3952 6-Channel Color LED
 
 LED core improvements:
 - Only descend into leds directory when CONFIG_NEW_LEDS is set
 - Add no-op gpio_led_register_device when LED subsystem is disabled
 - MAINTAINERS: Add file patterns for led device tree bindings
 
 LED Trigger core improvements:
 - return error if invalid trigger name is provided via sysfs
 
 LED class drivers improvements
 - is31fl32xx: define complete i2c_device_id table
 - is31fl32xx: fix typo in id and match table names
 - leds-gpio: Set of_node for created LED devices
 - pca9532: Add device tree support
 
 Conversion of IDE trigger to common disk trigger:
 - leds: convert IDE trigger to common disk trigger
 - leds: documentation: 'ide-disk' to 'disk-activity'
 - unicore32: use the new LED disk activity trigger
 - parisc: use the new LED disk activity trigger
 - mips: use the new LED disk activity trigger
 - arm: use the new LED disk activity trigger
 - powerpc: use the new LED disk activity trigger
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Merge tag 'leds_for_4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds

Pull LED updates from Jacek Anaszewski:
 "New LED class driver:
   - LED driver for TI LP3952 6-Channel Color LED

  LED core improvements:
   - Only descend into leds directory when CONFIG_NEW_LEDS is set
   - Add no-op gpio_led_register_device when LED subsystem is disabled
   - MAINTAINERS: Add file patterns for led device tree bindings

  LED Trigger core improvements:
   - return error if invalid trigger name is provided via sysfs

  LED class drivers improvements
   - is31fl32xx: define complete i2c_device_id table
   - is31fl32xx: fix typo in id and match table names
   - leds-gpio: Set of_node for created LED devices
   - pca9532: Add device tree support

  Conversion of IDE trigger to common disk trigger:
   - leds: convert IDE trigger to common disk trigger
   - leds: documentation: 'ide-disk' to 'disk-activity'
   - unicore32: use the new LED disk activity trigger
   - parisc: use the new LED disk activity trigger
   - mips: use the new LED disk activity trigger
   - arm: use the new LED disk activity trigger
   - powerpc: use the new LED disk activity trigger"

* tag 'leds_for_4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  leds: is31fl32xx: define complete i2c_device_id table
  leds: is31fl32xx: fix typo in id and match table names
  leds: LED driver for TI LP3952 6-Channel Color LED
  leds: leds-gpio: Set of_node for created LED devices
  leds: triggers: return error if invalid trigger name is provided via sysfs
  leds: Only descend into leds directory when CONFIG_NEW_LEDS is set
  leds: Add no-op gpio_led_register_device when LED subsystem is disabled
  unicore32: use the new LED disk activity trigger
  parisc: use the new LED disk activity trigger
  mips: use the new LED disk activity trigger
  arm: use the new LED disk activity trigger
  powerpc: use the new LED disk activity trigger
  leds: documentation: 'ide-disk' to 'disk-activity'
  leds: convert IDE trigger to common disk trigger
  leds: pca9532: Add device tree support
  MAINTAINERS: Add file patterns for led device tree bindings
2016-07-27 14:03:52 -07:00
Linus Torvalds 78d51aee04 Remove some old cruft that was disabled by default a long time ago.
No modern hardware should need this, and anybody who really
 doesn't have something to automatically detect IPMI can add the
 device by hand on the module commandline or hot add it.
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Merge tag 'for-linus-4.8' of git://git.code.sf.net/p/openipmi/linux-ipmi

Pull IPMI updates from Corey Minyard:
 "Remove some old cruft that was disabled by default a long time ago.

  No modern hardware should need this, and anybody who really doesn't
  have something to automatically detect IPMI can add the device by hand
  on the module commandline or hot add it"

* tag 'for-linus-4.8' of git://git.code.sf.net/p/openipmi/linux-ipmi:
  ipmi: remove trydefaults parameter and default init
2016-07-27 13:46:07 -07:00
Linus Torvalds c79a14defb * Altera Arria10 ethernet FIFO buffer support (Thor Thayer)
* Minor cleanups
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Merge tag 'edac_for_4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull EDAC updates from Borislav Petkov:
 "This last cycle, Thor was busy adding Arria10 eth FIFO support to the
  altera_edac driver along with other improvements.  We have two
  cleanups/fixes too.

  Summary:

   - Altera Arria10 ethernet FIFO buffer support (Thor Thayer)

   - Minor cleanups"

* tag 'edac_for_4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  ARM: dts: Add Arria10 Ethernet EDAC devicetree entry
  EDAC, altera: Add Arria10 Ethernet EDAC support
  EDAC, altera: Add Arria10 ECC memory init functions
  Documentation: dt: socfpga: Add Arria10 Ethernet binding
  EDAC, altera: Drop some ifdeffery
  EDAC, altera: Add panic flag check to A10 IRQ
  EDAC, altera: Check parent status for Arria10 EDAC block
  EDAC, altera: Make all private data structures static
  EDAC: Correct channel count limit
  EDAC, amd64_edac: Init opstate at the proper time during init
  EDAC, altera: Handle Arria10 SDRAM child node
  EDAC, altera: Add ECC Manager IRQ controller support
  Documentation: dt: socfpga: Add interrupt-controller to ecc-manager
2016-07-27 13:40:47 -07:00
Linus Torvalds 6e8d666e92 Disable "maybe-uninitialized" warning globally
Several build configurations had already disabled this warning because
it generates a lot of false positives.  But some had not, and it was
still enabled for "allmodconfig" builds, for example.

Looking at the warnings produced, every single one I looked at was a
false positive, and the warnings are frequent enough (and big enough)
that they can easily hide real problems that you don't notice in the
noise generated by -Wmaybe-uninitialized.

The warning is good in theory, but this is a classic case of a warning
that causes more problems than the warning can solve.

If gcc gets better at avoiding false positives, we may be able to
re-enable this warning.  But as is, we're better off without it, and I
want to be able to see the *real* warnings.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-07-27 13:17:41 -07:00
Arnaldo Carvalho de Melo 8149a774d5 tools lib api: Add str_error_c to libapi
Because it uses that function, which would lead every tool using it
to need to link against tools/lib/str_error_r.o.

This fixes building tools/vm/, that links with libapi.

Reported-by: Arjan van de Ven <arjan@linux.intel.com>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Fixes: b31e3e3316 ("tools lib api fs: Use str_error_r()")
Link: http://lkml.kernel.org/n/tip-aedt3qzibhnhaov2j4caqi61@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-27 17:16:43 -03:00
Linus Torvalds 468fc7ed55 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:

 1) Unified UDP encapsulation offload methods for drivers, from
    Alexander Duyck.

 2) Make DSA binding more sane, from Andrew Lunn.

 3) Support QCA9888 chips in ath10k, from Anilkumar Kolli.

 4) Several workqueue usage cleanups, from Bhaktipriya Shridhar.

 5) Add XDP (eXpress Data Path), essentially running BPF programs on RX
    packets as soon as the device sees them, with the option to mirror
    the packet on TX via the same interface.  From Brenden Blanco and
    others.

 6) Allow qdisc/class stats dumps to run lockless, from Eric Dumazet.

 7) Add VLAN support to b53 and bcm_sf2, from Florian Fainelli.

 8) Simplify netlink conntrack entry layout, from Florian Westphal.

 9) Add ipv4 forwarding support to mlxsw spectrum driver, from Ido
    Schimmel, Yotam Gigi, and Jiri Pirko.

10) Add SKB array infrastructure and convert tun and macvtap over to it.
    From Michael S Tsirkin and Jason Wang.

11) Support qdisc packet injection in pktgen, from John Fastabend.

12) Add neighbour monitoring framework to TIPC, from Jon Paul Maloy.

13) Add NV congestion control support to TCP, from Lawrence Brakmo.

14) Add GSO support to SCTP, from Marcelo Ricardo Leitner.

15) Allow GRO and RPS to function on macsec devices, from Paolo Abeni.

16) Support MPLS over IPV4, from Simon Horman.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1622 commits)
  xgene: Fix build warning with ACPI disabled.
  be2net: perform temperature query in adapter regardless of its interface state
  l2tp: Correctly return -EBADF from pppol2tp_getname.
  net/mlx5_core/health: Remove deprecated create_singlethread_workqueue
  net: ipmr/ip6mr: update lastuse on entry change
  macsec: ensure rx_sa is set when validation is disabled
  tipc: dump monitor attributes
  tipc: add a function to get the bearer name
  tipc: get monitor threshold for the cluster
  tipc: make cluster size threshold for monitoring configurable
  tipc: introduce constants for tipc address validation
  net: neigh: disallow transition to NUD_STALE if lladdr is unchanged in neigh_update()
  MAINTAINERS: xgene: Add driver and documentation path
  Documentation: dtb: xgene: Add MDIO node
  dtb: xgene: Add MDIO node
  drivers: net: xgene: ethtool: Use phy_ethtool_gset and sset
  drivers: net: xgene: Use exported functions
  drivers: net: xgene: Enable MDIO driver
  drivers: net: xgene: Add backward compatibility
  drivers: net: phy: xgene: Add MDIO driver
  ...
2016-07-27 12:03:20 -07:00
Linus Torvalds 08fd8c1768 xen: features and fixes for 4.8-rc0
- ACPI support for guests on ARM platforms.
 - Generic steal time support for arm and x86.
 - Support cases where kernel cpu is not Xen VCPU number (e.g., if
   in-guest kexec is used).
 - Use the system workqueue instead of a custom workqueue in various
   places.
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Merge tag 'for-linus-4.8-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen updates from David Vrabel:
 "Features and fixes for 4.8-rc0:

   - ACPI support for guests on ARM platforms.
   - Generic steal time support for arm and x86.
   - Support cases where kernel cpu is not Xen VCPU number (e.g., if
     in-guest kexec is used).
   - Use the system workqueue instead of a custom workqueue in various
     places"

* tag 'for-linus-4.8-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (47 commits)
  xen: add static initialization of steal_clock op to xen_time_ops
  xen/pvhvm: run xen_vcpu_setup() for the boot CPU
  xen/evtchn: use xen_vcpu_id mapping
  xen/events: fifo: use xen_vcpu_id mapping
  xen/events: use xen_vcpu_id mapping in events_base
  x86/xen: use xen_vcpu_id mapping when pointing vcpu_info to shared_info
  x86/xen: use xen_vcpu_id mapping for HYPERVISOR_vcpu_op
  xen: introduce xen_vcpu_id mapping
  x86/acpi: store ACPI ids from MADT for future usage
  x86/xen: update cpuid.h from Xen-4.7
  xen/evtchn: add IOCTL_EVTCHN_RESTRICT
  xen-blkback: really don't leak mode property
  xen-blkback: constify instance of "struct attribute_group"
  xen-blkfront: prefer xenbus_scanf() over xenbus_gather()
  xen-blkback: prefer xenbus_scanf() over xenbus_gather()
  xen: support runqueue steal time on xen
  arm/xen: add support for vm_assist hypercall
  xen: update xen headers
  xen-pciback: drop superfluous variables
  xen-pciback: short-circuit read path used for merging write values
  ...
2016-07-27 11:35:37 -07:00
Linus Torvalds e831101a73 arm64 updates for 4.8:
- Kexec support for arm64
 - Kprobes support
 - Expose MIDR_EL1 and REVIDR_EL1 CPU identification registers to sysfs
 - Trapping of user space cache maintenance operations and emulation in
   the kernel (CPU errata workaround)
 - Clean-up of the early page tables creation (kernel linear mapping, EFI
   run-time maps) to avoid splitting larger blocks (e.g. pmds) into
   smaller ones (e.g. ptes)
 - VDSO support for CLOCK_MONOTONIC_RAW in clock_gettime()
 - ARCH_HAS_KCOV enabled for arm64
 - Optimise IP checksum helpers
 - SWIOTLB optimisation to only allocate/initialise the buffer if the
   available RAM is beyond the 32-bit mask
 - Properly handle the "nosmp" command line argument
 - Fix for the initialisation of the CPU debug state during early boot
 - vdso-offsets.h build dependency workaround
 - Build fix when RANDOMIZE_BASE is enabled with MODULES off
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Catalin Marinas:

 - Kexec support for arm64

 - Kprobes support

 - Expose MIDR_EL1 and REVIDR_EL1 CPU identification registers to sysfs

 - Trapping of user space cache maintenance operations and emulation in
   the kernel (CPU errata workaround)

 - Clean-up of the early page tables creation (kernel linear mapping,
   EFI run-time maps) to avoid splitting larger blocks (e.g.  pmds) into
   smaller ones (e.g.  ptes)

 - VDSO support for CLOCK_MONOTONIC_RAW in clock_gettime()

 - ARCH_HAS_KCOV enabled for arm64

 - Optimise IP checksum helpers

 - SWIOTLB optimisation to only allocate/initialise the buffer if the
   available RAM is beyond the 32-bit mask

 - Properly handle the "nosmp" command line argument

 - Fix for the initialisation of the CPU debug state during early boot

 - vdso-offsets.h build dependency workaround

 - Build fix when RANDOMIZE_BASE is enabled with MODULES off

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (64 commits)
  arm64: arm: Fix-up the removal of the arm64 regs_query_register_name() prototype
  arm64: Only select ARM64_MODULE_PLTS if MODULES=y
  arm64: mm: run pgtable_page_ctor() on non-swapper translation table pages
  arm64: mm: make create_mapping_late() non-allocating
  arm64: Honor nosmp kernel command line option
  arm64: Fix incorrect per-cpu usage for boot CPU
  arm64: kprobes: Add KASAN instrumentation around stack accesses
  arm64: kprobes: Cleanup jprobe_return
  arm64: kprobes: Fix overflow when saving stack
  arm64: kprobes: WARN if attempting to step with PSTATE.D=1
  arm64: debug: remove unused local_dbg_{enable, disable} macros
  arm64: debug: remove redundant spsr manipulation
  arm64: debug: unmask PSTATE.D earlier
  arm64: localise Image objcopy flags
  arm64: ptrace: remove extra define for CPSR's E bit
  kprobes: Add arm64 case in kprobe example module
  arm64: Add kernel return probes support (kretprobes)
  arm64: Add trampoline code for kretprobes
  arm64: kprobes instruction simulation support
  arm64: Treat all entry code as non-kprobe-able
  ...
2016-07-27 11:16:05 -07:00
Linus Torvalds f9abf53af4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
Pull tile architecture updates from Chris Metcalf:
 "A few stray changes"

* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  tile: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO
  tile: support gcc 7 optimization to use __multi3
  tile 32-bit big-endian: fix bugs in syscall argument order
  tile: allow disabling CONFIG_EARLY_PRINTK
2016-07-27 10:54:11 -07:00
Linus Torvalds ba4f67899f dlm for 4.8
This set includes two trivial changes, one to
 use kmemdup and another to control the log level
 of recovery messages.
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Merge tag 'dlm-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm

Pull dlm updates from David Teigland:
 "This set includes two trivial changes, one to use kmemdup and another
  to control the log level of recovery messages"

* tag 'dlm-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
  dlm: Use kmemdup instead of kmalloc and memcpy
  dlm: add log_info config option
2016-07-27 10:47:24 -07:00
Linus Torvalds 4fc29c1aa3 The major change in this version is mitigating cpu overheads on write paths by
replacing redundant inode page updates with mark_inode_dirty calls. And we tried
 to reduce lock contentions as well to improve filesystem scalability.
 Other feature is setting F2FS automatically when detecting host-managed SMR.
 
 = Enhancement =
  - ioctl to move a range of data between files
  - inject orphan inode errors
  - avoid flush commands congestion
  - support lazytime
 
 = Bug fixes =
  - return proper results for some dentry operations
  - fix deadlock in add_link failure
  - disable extent_cache for fcollapse/finsert
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Merge tag 'for-f2fs-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "The major change in this version is mitigating cpu overheads on write
  paths by replacing redundant inode page updates with mark_inode_dirty
  calls.  And we tried to reduce lock contentions as well to improve
  filesystem scalability.  Other feature is setting F2FS automatically
  when detecting host-managed SMR.

  Enhancements:
   - ioctl to move a range of data between files
   - inject orphan inode errors
   - avoid flush commands congestion
   - support lazytime

  Bug fixes:
   - return proper results for some dentry operations
   - fix deadlock in add_link failure
   - disable extent_cache for fcollapse/finsert"

* tag 'for-f2fs-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (68 commits)
  f2fs: clean up coding style and redundancy
  f2fs: get victim segment again after new cp
  f2fs: handle error case with f2fs_bug_on
  f2fs: avoid data race when deciding checkpoin in f2fs_sync_file
  f2fs: support an ioctl to move a range of data blocks
  f2fs: fix to report error number of f2fs_find_entry
  f2fs: avoid memory allocation failure due to a long length
  f2fs: reset default idle interval value
  f2fs: use blk_plug in all the possible paths
  f2fs: fix to avoid data update racing between GC and DIO
  f2fs: add maximum prefree segments
  f2fs: disable extent_cache for fcollapse/finsert inodes
  f2fs: refactor __exchange_data_block for speed up
  f2fs: fix ERR_PTR returned by bio
  f2fs: avoid mark_inode_dirty
  f2fs: move i_size_write in f2fs_write_end
  f2fs: fix to avoid redundant discard during fstrim
  f2fs: avoid mismatching block range for discard
  f2fs: fix incorrect f_bfree calculation in ->statfs
  f2fs: use percpu_rw_semaphore
  ...
2016-07-27 10:36:31 -07:00
Linus Torvalds 0e6acf0204 xfs: update for 4.8-rc1
Changes in this update:
 o generic iomap based IO path infrastructure
 o generic iomap based fiemap implementation
 o xfs iomap based Io path implementation
 o buffer error handling fixes
 o tracking of in flight buffer IO for unmount serialisation
 o direct IO and DAX io path separation and simplification
 o shortform directory format definition changes for wider platform compatibility
 o various buffer cache fixes
 o cleanups in preparation for rmap merge
 o error injection cleanups and fixes
 o log item format buffer memory allocation restructuring to prevent rare OOM
   reclaim deadlocks
 o sparse inode chunks are now fully supported.
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Merge tag 'xfs-for-linus-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs

Pull xfs updates from Dave Chinner:
 "The major addition is the new iomap based block mapping
  infrastructure.  We've been kicking this about locally for years, but
  there are other filesystems want to use it too (e.g. gfs2).  Now it
  is fully working, reviewed and ready for merge and be used by other
  filesystems.

  There are a lot of other fixes and cleanups in the tree, but those are
  XFS internal things and none are of the scale or visibility of the
  iomap changes.  See below for details.

  I am likely to send another pull request next week - we're just about
  ready to merge some new functionality (on disk block->owner reverse
  mapping infrastructure), but that's a huge chunk of code (74 files
  changed, 7283 insertions(+), 1114 deletions(-)) so I'm keeping that
  separate to all the "normal" pull request changes so they don't get
  lost in the noise.

  Summary of changes in this update:
   - generic iomap based IO path infrastructure
   - generic iomap based fiemap implementation
   - xfs iomap based Io path implementation
   - buffer error handling fixes
   - tracking of in flight buffer IO for unmount serialisation
   - direct IO and DAX io path separation and simplification
   - shortform directory format definition changes for wider platform
     compatibility
   - various buffer cache fixes
   - cleanups in preparation for rmap merge
   - error injection cleanups and fixes
   - log item format buffer memory allocation restructuring to prevent
     rare OOM reclaim deadlocks
   - sparse inode chunks are now fully supported"

* tag 'xfs-for-linus-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs: (53 commits)
  xfs: remove EXPERIMENTAL tag from sparse inode feature
  xfs: bufferhead chains are invalid after end_page_writeback
  xfs: allocate log vector buffers outside CIL context lock
  libxfs: directory node splitting does not have an extra block
  xfs: remove dax code from object file when disabled
  xfs: skip dirty pages in ->releasepage()
  xfs: remove __arch_pack
  xfs: kill xfs_dir2_inou_t
  xfs: kill xfs_dir2_sf_off_t
  xfs: split direct I/O and DAX path
  xfs: direct calls in the direct I/O path
  xfs: stop using generic_file_read_iter for direct I/O
  xfs: split xfs_file_read_iter into buffered and direct I/O helpers
  xfs: remove s_maxbytes enforcement in xfs_file_read_iter
  xfs: kill ioflags
  xfs: don't pass ioflags around in the ioctl path
  xfs: track and serialize in-flight async buffers against unmount
  xfs: exclude never-released buffers from buftarg I/O accounting
  xfs: don't reset b_retries to 0 on every failure
  xfs: remove extraneous buffer flag changes
  ...
2016-07-27 09:53:35 -07:00
Tony Camuso b07b58a3e4 ipmi: remove trydefaults parameter and default init
Parameter trydefaults=1 causes the ipmi_init to initialize ipmi through
the legacy port io space that was designated for ipmi. Architectures
that do not map legacy port io can panic when trydefaults=1.

Rather than implement build-time conditional exceptions for each
architecture that does not map legacy port io, we have removed legacy
port io from the driver.

Parameter 'trydefaults' has been removed. Attempts to use it hereafter
will evoke the "Unknown symbol in module, or unknown parameter" message.

The patch was built against a number of architectures and tested for
regressions and functionality on x86_64 and ARM64.

Signed-off-by: Tony Camuso <tcamuso@redhat.com>

Removed the config entry and the address source entry for default,
since neither were used any more.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2016-07-27 10:24:38 -05:00
Mauro Carvalho Chehab 85538b1ad1 Merge branch 'topic/docs-next' into v4l_for_linus
* topic/docs-next: (322 commits)
  [media] cx23885-cardlist.rst: add a new card
  [media] doc-rst: add some needed escape codes
  [media] doc-rst: kapi: use :c:func: instead of :cpp:func
  doc-rst: kernel-doc: fix a change introduced by mistake
  [media] v4l2-ioctl.h add debug info for struct v4l2_ioctl_ops
  [media] dvb_ringbuffer.h: some documentation improvements
  [media] v4l2-ctrls.h: fully document the header file
  [media] doc-rst: Fix some typedef ugly warnings
  [media] doc-rst: reorganize the kAPI v4l2 chapters
  [media] rename v4l2-framework.rst to v4l2-intro.rst
  [media] move V4L2 clocks to a separate .rst file
  [media] v4l2-fh.rst: add cross references and markups
  [media] v4l2-fh.rst: add fh contents from v4l2-framework.rst
  [media] v4l2-fh.h: add documentation for it
  [media] v4l2-event.rst: add cross-references and markups
  [media] v4l2-event.h: document all functions
  [media] v4l2-event.rst: add text from v4l2-framework.rst
  [media] v4l2-framework.rst: remove videobuf quick chapter
  [media] v4l2-dev: add cross-references and improve markup
  [media] doc-rst: move v4l2-dev doc to a separate file
  ...
2016-07-27 10:45:04 -03:00
Borislav Petkov 4a1a8e1b8f x86/asm, x86/microcode: Add __PAGE_OFFSET_BASE define on 32-bit
... in order to avoid #ifdeffery in code computing the ASLR randomization
offset. Remove that #ifdeffery in the microcode loader.

Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nicolai Stange <nicstange@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Garnier <thgarnie@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20160727120939.GA18911@nazgul.tnic
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-27 14:59:59 +02:00
Ingo Molnar df15929f8f Merge branch 'linus' into x86/microcode, to pick up merge window changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-27 12:35:35 +02:00
Miklos Szeredi 1b91dbdd29 Merge branch 'd_real' into overlayfs-next 2016-07-27 11:36:03 +02:00
Oleg Nesterov ce4f06dcbb stop_machine: Touch_nmi_watchdog() after MULTI_STOP_PREPARE
Suppose that stop_machine(fn) hangs because fn() hangs. In this case NMI
hard-lockup can be triggered on another CPU which does nothing wrong and
the trace from nmi_panic() won't help to investigate the problem.

And this change "fixes" the problem we (seem to) hit in practice.

 - stop_two_cpus(0, 1) races with show_state_filter() running on CPU_0.

 - CPU_1 already spins in MULTI_STOP_PREPARE state, it detects the soft
   lockup and tries to report the problem.

 - show_state_filter() enables preemption, CPU_0 calls multi_cpu_stop()
   which goes to MULTI_STOP_DISABLE_IRQ state and disables interrupts.

 - CPU_1 spends more than 10 seconds trying to flush the log buffer to
   the slow serial console.

 - NMI interrupt on CPU_0 (which now waits for CPU_1) calls nmi_panic().

Reported-by: Wang Shu <shuwang@redhat.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dave Anderson <anderson@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/20160726185736.GB4088@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-27 11:12:11 +02:00
Paul Gortmaker 5cada17426 objtool: Add 'fixdep' to objtool/.gitignore
To fix:

   Untracked files:
     (use "git add <file>..." to include in what will be committed)

           tools/objtool/fixdep

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/a4571f6893caf737d05524cfa3829c2abc1fb240.1469452729.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-27 11:07:11 +02:00
Ingo Molnar e4b3e0694b perf/urgent fixes:
- Fix obtaining the 'start' address for a kernel module on s390, where
   .text doesn't coincides with the start of the module as reported on
   /proc/modules (Song Shan Gong)
 
 - Use official ELF e_machine value for BPF objects generated via perf + LLVM
   when specifying BPF scriptlet in 'perf record/trace --event' (Wang Nan)
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-urgent-for-mingo-20160726' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

 - Fix obtaining the 'start' address for a kernel module on s390, where
   .text doesn't coincide with the start of the module as reported in
   /proc/modules (Song Shan Gong)

 - Use official ELF e_machine value for BPF objects generated via perf + LLVM
   when specifying BPF scriptlet in 'perf record/trace --event' (Wang Nan)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-27 11:01:06 +02:00
Arnd Bergmann 7616ac70d1 apparmor: fix SECURITY_APPARMOR_HASH_DEFAULT parameter handling
The newly added Kconfig option could never work and just causes a build error
when disabled:

security/apparmor/lsm.c:675:25: error: 'CONFIG_SECURITY_APPARMOR_HASH_DEFAULT' undeclared here (not in a function)
 bool aa_g_hash_policy = CONFIG_SECURITY_APPARMOR_HASH_DEFAULT;

The problem is that the macro undefined in this case, and we need to use the IS_ENABLED()
helper to turn it into a boolean constant.

Another minor problem with the original patch is that the option is even offered
in sysfs when SECURITY_APPARMOR_HASH is not enabled, so this also hides the option
in that case.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 6059f71f1e ("apparmor: add parameter to control whether policy hashing is used")
Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
2016-07-27 17:39:26 +10:00
Catalin Marinas fd6380b750 arm64: arm: Fix-up the removal of the arm64 regs_query_register_name() prototype
Commit 0a8ea52c3e ("arm64: Add HAVE_REGS_AND_STACK_ACCESS_API
feature") inadvertently removed the arch/arm prototype instead of the
arm64 one introduced by the original patch. There should not be any
bisection issues since this function is not called from anywhere else
(it could as well be removed from arch/arm at some point).

Fixes: 0a8ea52c3e ("arm64: Add HAVE_REGS_AND_STACK_ACCESS_API feature")
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-07-27 08:15:42 +01:00