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Author SHA1 Message Date
Kirill A. Shutemov 9823336833 x86: expose number of page table levels on Kconfig level 
We would want to use number of page table level to define mm_struct.
Let's expose it as CONFIG_PGTABLE_LEVELS.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-04-14 16:49:02 -07:00
Konstantin Khlebnikov 761b06771a mm: completely remove dumping per-cpu lists from show_mem() 
It seems nobody needs this.

Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-04-14 16:49:01 -07:00
Konstantin Khlebnikov d1bfcdb8ce mm: hide per-cpu lists in output of show_mem() 
This makes show_mem() much less verbose on huge machines.  Instead of huge
and almost useless dump of counters for each per-zone per-cpu lists this
patch prints the sum of these counters for each zone (free_pcp) and size
of per-cpu list for current cpu (local_pcp).

The filter flag SHOW_MEM_PERCPU_LISTS reverts to the old verbose mode.

[akpm@linux-foundation.org: update show_free_areas comment]
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Acked-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-04-14 16:49:01 -07:00
Konstantin Khlebnikov b9ea25152e page_writeback: clean up mess around cancel_dirty_page() 
This patch replaces cancel_dirty_page() with a helper function
account_page_cleaned() which only updates counters.  It's called from
truncate_complete_page() and from try_to_free_buffers() (hack for ext3).
Page is locked in both cases, page-lock protects against concurrent
dirtiers: see commit 2d6d7f9828 ("mm: protect set_page_dirty() from
ongoing truncation").

Delete_from_page_cache() shouldn't be called for dirty pages, they must
be handled by caller (either written or truncated).  This patch treats
final dirty accounting fixup at the end of __delete_from_page_cache() as
a debug check and adds WARN_ON_ONCE() around it.  If something removes
dirty pages without proper handling that might be a bug and unwritten
data might be lost.

Hugetlbfs has no dirty pages accounting, ClearPageDirty() is enough
here.

cancel_dirty_page() in nfs_wb_page_cancel() is redundant.  This is
helper for nfs_invalidate_page() and it's called only in case complete
invalidation.

The mess was started in v2.6.20 after commits 46d2277c79 ("Clean up
and make try_to_free_buffers() not race with dirty pages") and
3e67c0987d ("truncate: clear page dirtiness before running
try_to_free_buffers()") first was reverted right in v2.6.20 in commit
ecdfc9787f ("Resurrect 'try_to_free_buffers()' VM hackery"), second in
v2.6.25 commit a2b345642f ("Fix dirty page accounting leak with ext3
data=journal").

Custom fixes were introduced between these points.  NFS in v2.6.23, commit
1b3b4a1a2d ("NFS: Fix a write request leak in nfs_invalidate_page()").
Kludge in __delete_from_page_cache() in v2.6.24, commit 3a6927906f ("Do
dirty page accounting when removing a page from the page cache").  Since
v2.6.25 all of them are redundant.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Tejun Heo <tj@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-04-14 16:49:01 -07:00
David Rientjes 30467e0b3b mm, hotplug: fix concurrent memory hot-add deadlock 
There's a deadlock when concurrently hot-adding memory through the probe
interface and switching a memory block from offline to online.

When hot-adding memory via the probe interface, add_memory() first takes
mem_hotplug_begin() and then device_lock() is later taken when registering
the newly initialized memory block.  This creates a lock dependency of (1)
mem_hotplug.lock (2) dev->mutex.

When switching a memory block from offline to online, dev->mutex is first
grabbed in device_online() when the write(2) transitions an existing
memory block from offline to online, and then online_pages() will take
mem_hotplug_begin().

This creates a lock inversion between mem_hotplug.lock and dev->mutex.
Vitaly reports that this deadlock can happen when kworker handling a probe
event races with systemd-udevd switching a memory block's state.

This patch requires the state transition to take mem_hotplug_begin()
before dev->mutex.  Hot-adding memory via the probe interface creates a
memory block while holding mem_hotplug_begin(), there is no way to take
dev->mutex first in this case.

online_pages() and offline_pages() are only called when transitioning
memory block state.  We now require that mem_hotplug_begin() is taken
before calling them -- this requires exporting the mem_hotplug_begin() and
mem_hotplug_done() to generic code.  In all hot-add and hot-remove cases,
mem_hotplug_begin() is done prior to device_online().  This is all that is
needed to avoid the deadlock.

Signed-off-by: David Rientjes <rientjes@google.com>
Reported-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Tested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zhang Zhen <zhenzhang.zhang@huawei.com>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Cc: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-04-14 16:49:00 -07:00
Kirill A. Shutemov 84d33df279 mm: rename FOLL_MLOCK to FOLL_POPULATE 
After commit a1fde08c74 ("VM: skip the stack guard page lookup in
get_user_pages only for mlock") FOLL_MLOCK has lost its original
meaning: we don't necessarily mlock the page if the flags is set -- we
also take VM_LOCKED into consideration.

Since we use the same codepath for __mm_populate(), let's rename
FOLL_MLOCK to FOLL_POPULATE.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-04-14 16:48:59 -07:00
David Rientjes 124dee09f0 mm, slab: correct config option in comment 
CONFIG_SLAB_DEBUG doesn't exist, CONFIG_DEBUG_SLAB does.

Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-04-14 16:48:59 -07:00
Ulrich Obergfell 692297d8f9 watchdog: introduce the hardlockup_detector_disable() function 
Have kvm_guest_init() use hardlockup_detector_disable() instead of
watchdog_enable_hardlockup_detector(false).

Remove the watchdog_hardlockup_detector_is_enabled() and the
watchdog_enable_hardlockup_detector() function which are no longer needed.

Signed-off-by: Ulrich Obergfell <uobergfe@redhat.com>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-04-14 16:48:59 -07:00
Ulrich Obergfell 195daf665a watchdog: enable the new user interface of the watchdog mechanism 
With the current user interface of the watchdog mechanism it is only
possible to disable or enable both lockup detectors at the same time.
This series introduces new kernel parameters and changes the semantics of
some existing kernel parameters, so that the hard lockup detector and the
soft lockup detector can be disabled or enabled individually.  With this
series applied, the user interface is as follows.

- parameters in /proc/sys/kernel

  . soft_watchdog
    This is a new parameter to control and examine the run state of
    the soft lockup detector.

  . nmi_watchdog
    The semantics of this parameter have changed. It can now be used
    to control and examine the run state of the hard lockup detector.

  . watchdog
    This parameter is still available to control the run state of both
    lockup detectors at the same time. If this parameter is examined,
    it shows the logical OR of soft_watchdog and nmi_watchdog.

  . watchdog_thresh
    The semantics of this parameter are not affected by the patch.

- kernel command line parameters

  . nosoftlockup
    The semantics of this parameter have changed. It can now be used
    to disable the soft lockup detector at boot time.

  . nmi_watchdog=0 or nmi_watchdog=1
    Disable or enable the hard lockup detector at boot time. The patch
    introduces '=1' as a new option.

  . nowatchdog
    The semantics of this parameter are not affected by the patch. It
    is still available to disable both lockup detectors at boot time.

Also, remove the proc_dowatchdog() function which is no longer needed.

[dzickus@redhat.com: wrote changelog]
[dzickus@redhat.com: update documentation for kernel params and sysctl]
Signed-off-by: Ulrich Obergfell <uobergfe@redhat.com>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-04-14 16:48:59 -07:00
Ulrich Obergfell 83a80a3907 watchdog: introduce separate handlers for parameters in /proc/sys/kernel 
Separate handlers for each watchdog parameter in /proc/sys/kernel replace
the proc_dowatchdog() function.  Three of those handlers merely call
proc_watchdog_common() with one different argument.

Signed-off-by: Ulrich Obergfell <uobergfe@redhat.com>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-04-14 16:48:59 -07:00
Ulrich Obergfell 84d56e66b9 watchdog: new definitions and variables, initialization 
The hardlockup and softockup had always been tied together.  Due to the
request of KVM folks, they had a need to have one enabled but not the
other.  Internally rework the code to split things apart more cleanly.

There is a bunch of churn here, but the end result should be code that
should be easier to maintain and fix without knowing the internals of what
is going on.

This patch (of 9):

Introduce new definitions and variables to separate the user interface in
/proc/sys/kernel from the internal run state of the lockup detectors.  The
internal run state is represented by two bits in a new variable that is
named 'watchdog_enabled'.  This helps simplify the code, for example:

- In order to check if any of the two lockup detectors is enabled,
  it is sufficient to check if 'watchdog_enabled' is not zero.

- In order to enable/disable one or both lockup detectors,
  it is sufficient to set/clear one or both bits in 'watchdog_enabled'.

- Concurrent updates of 'watchdog_enabled' need not be synchronized via
  a spinlock or a mutex. Updates can either be atomic or concurrency can
  be detected by using 'cmpxchg'.

Signed-off-by: Ulrich Obergfell <uobergfe@redhat.com>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-04-14 16:48:58 -07:00
Linus Torvalds b79013b244 Staging driver patches for 4.1-rc1 
Here's the big staging driver patchset for 4.1-rc1.
 
 There's a lot of patches here, the Outreachy application period happened
 during this development cycle, so that means that there was a lot of
 cleanup patches accepted.  Other than the normal coding style and sparse
 fixes here, there are some driver updates and work toward making some of
 the drivers into "mergable" shape (like the Unisys drivers.)
 
 All of these have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver updates from Greg KH:
 "Here's the big staging driver patchset for 4.1-rc1.

  There's a lot of patches here, the Outreachy application period
  happened during this development cycle, so that means that there was a
  lot of cleanup patches accepted.  Other than the normal coding style
  and sparse fixes here, there are some driver updates and work toward
  making some of the drivers into "mergable" shape (like the Unisys
  drivers.)

  All of these have been in linux-next for a while"

* tag 'staging-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1214 commits)
  staging: lustre: orthography & coding style
  staging: lustre: lnet: lnet: fix error return code
  staging: lustre: fix sparse warning
  Revert "Staging: sm750fb: Fix C99 Comments"
  Staging: rtl8192u: use correct array for debug output
  staging: rtl8192e: Remove dead code
  staging: rtl8192e: Comment cleanup (style/format)
  staging: rtl8192e: Fix indentation in rtllib_rx_auth_resp()
  staging: rtl8192e: Decrease nesting of rtllib_rx_auth_resp()
  staging: rtl8192e: Divide rtllib_rx_auth()
  staging: rtl8192e: Fix PRINTK_WITHOUT_KERN_LEVEL warnings
  staging: rtl8192e: Fix DO_WHILE_MACRO_WITH_TRAILING_SEMICOLON warning
  staging: rtl8192e: Fix BRACES warning
  staging: rtl8192e: Fix LINE_CONTINUATIONS warning
  staging: rtl8192e: Fix UNNECESSARY_PARENTHESES warnings
  staging: rtl8192e: remove unused EXPORT_SYMBOL_RSL macro
  staging: rtl8192e: Fix RETURN_VOID warnings
  staging: rtl8192e: Fix UNNECESSARY_ELSE warning
  staging: rtl8723au: Remove unneeded comments
  staging: rtl8723au: Use __func__ in trace logs
  ...
 2015-04-13 17:37:33 -07:00
Linus Torvalds c4be50eee2 Driver core update for 4.1-rc1 
Here's the driver-core / kobject / lz4 tree update for 4.1-rc1.
 
 Everything here has been in linux-next for a while with no reported
 issues.  It's mostly just coding style cleanups, with other minor
 changes in here as well, nothing big.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here's the driver-core / kobject / lz4 tree update for 4.1-rc1.

  Everything here has been in linux-next for a while with no reported
  issues.  It's mostly just coding style cleanups, with other minor
  changes in here as well, nothing big"

* tag 'driver-core-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (32 commits)
  debugfs: allow bad parent pointers to be passed in
  stable_kernel_rules: Add clause about specification of kernel versions to patch.
  kobject: WARN as tip when call kobject_get() to a kobject not initialized
  lib/lz4: Pull out constant tables
  drivers: platform: parse IRQ flags from resources
  driver core: Make probe deferral more quiet
  drivers/core/of: Add symlink to device-tree from devices with an OF node
  device: Add dev_of_node() accessor
  drivers: base: fw: fix ret value when loading fw
  firmware: Avoid manual device_create_file() calls
  drivers/base: cacheinfo: validate device node for all the caches
  drivers/base: use tabs where possible in code indentation
  driver core: add missing blank line after declaration
  drivers: base: node: Delete space after pointer declaration
  drivers: base: memory: Use tabs instead of spaces
  firmware_class: Fix whitespace and indentation
  drivers: base: dma-mapping: Erase blank space after pointer
  drivers: base: class: Add a blank line after declarations
  attribute_container: fix missing blank lines after declarations
  drivers: base: memory: Fix switch indent
  ...
 2015-04-13 17:17:32 -07:00
Linus Torvalds 42e3a58b02 USB patches for 4.1-rc1 
Here's the big USB (and PHY) driver patchset for 4.1-rc1.
 
 Everything here has been in linux-next, and the full details are below
 in the shortlog.  Nothing major, just the normal round of new
 drivers,api updates, and other changes, mostly in the USB gadget area,
 as usual.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB driver updates from Greg KH:
 "Here's the big USB (and PHY) driver patchset for 4.1-rc1.

  Everything here has been in linux-next, and the full details are below
  in the shortlog.  Nothing major, just the normal round of new
  drivers,api updates, and other changes, mostly in the USB gadget area,
  as usual"

* tag 'usb-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (252 commits)
  drivers/usb/core: devio.c: Removed an uneeded space before tab
  usb: dwc2: host: sleep USB_RESUME_TIMEOUT during resume
  usb: chipidea: debug: add low power mode check before print registers
  usb: chipidea: udc: bypass pullup DP when gadget connect in OTG fsm mode
  usb: core: hub: use new USB_RESUME_TIMEOUT
  usb: isp1760: hcd: use new USB_RESUME_TIMEOUT
  usb: dwc2: hcd: use new USB_RESUME_TIMEOUT
  usb: host: sl811: use new USB_RESUME_TIMEOUT
  usb: host: r8a66597: use new USB_RESUME_TIMEOUT
  usb: host: oxu210hp: use new USB_RESUME_TIMEOUT
  usb: host: fusbh200: use new USB_RESUME_TIMEOUT
  usb: host: fotg210: use new USB_RESUME_TIMEOUT
  usb: host: isp116x: use new USB_RESUME_TIMEOUT
  usb: musb: use new USB_RESUME_TIMEOUT
  usb: host: uhci: use new USB_RESUME_TIMEOUT
  usb: host: ehci: use new USB_RESUME_TIMEOUT
  usb: host: xhci: use new USB_RESUME_TIMEOUT
  usb: define a generic USB_RESUME_TIMEOUT macro
  usb: musb: dsps: fix build on i386 when COMPILE_TEST is set
  ehci-hub: use USB_DT_HUB
  ...
 2015-04-13 17:07:21 -07:00
Linus Torvalds 4fd48b45ff Merge branch 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 
Pull cgroup updates from Tejun Heo:
 "Nothing too interesting.  Rik made cpuset cooperate better with
  isolcpus and there are several other cleanup patches"

* 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cpuset, isolcpus: document relationship between cpusets & isolcpus
  cpusets, isolcpus: exclude isolcpus from load balancing in cpusets
  sched, isolcpu: make cpu_isolated_map visible outside scheduler
  cpuset: initialize cpuset a bit early
  cgroup: Use kvfree in pidlist_free()
  cgroup: call cgroup_subsys->bind on cgroup subsys initialization
 2015-04-13 16:47:11 -07:00
Linus Torvalds a1480a166d Merge branch 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 
Pull libata updates from Tejun Heo:

 - Hannes's patchset implements support for better error reporting
   introduced by the new ATA command spec.

 - the deperecated pci_ dma API usages have been replaced by dma_ ones.

 - a bunch of hardware specific updates and some cleanups.

* 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  ata: remove deprecated use of pci api
  ahci: st: st_configure_oob must be called after IP is clocked.
  ahci: st: Update the ahci_st DT documentation
  ahci: st: Update the DT example for how to obtain the PHY.
  sata_dwc_460ex: indent an if statement
  libata: Add tracepoints
  libata-eh: Set 'information' field for autosense
  libata: Implement support for sense data reporting
  libata: Implement NCQ autosense
  libata: use status bit definitions in ata_dump_status()
  ide,ata: Rename ATA_IDX to ATA_SENSE
  libata: whitespace fixes in ata_to_sense_error()
  libata: whitespace cleanup in ata_get_cmd_descript()
  libata: use READ_LOG_DMA_EXT
  libata: remove ATA_FLAG_LOWTAG
  sata_dwc_460ex: re-use hsdev->dev instead of dwc_dev
  sata_dwc_460ex: move to generic DMA driver
  sata_dwc_460ex: join messages back
  sata: xgene: add ACPI support for APM X-Gene SATA ports
  ata: sata_mv: add proper definitions for LP_PHY_CTL register values
 2015-04-13 16:42:16 -07:00
Linus Torvalds 45141eeafe Merge branch 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 
Pull workqueue updates from Tejun Heo:
 "Workqueue now prints debug information at the end of sysrq-t which
  should be helpful when tracking down suspected workqueue stalls.  It
  only prints out the ones with something currently going on so it
  shouldn't add much output in most cases"

* 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: Reorder sysfs code
  percpu: Fix trivial typos in comments
  workqueue: dump workqueues on sysrq-t
  workqueue: keep track of the flushing task and pool manager
  workqueue: make the workqueues list RCU walkable
 2015-04-13 16:19:18 -07:00
Linus Torvalds 8954672d86 Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull irq core updates from Thomas Gleixner:
 "Managerial summary:

  Core code:
   - final removal of IRQF_DISABLED
   - new state save/restore functions for virtualization support
   - wakeup support for stacked irqdomains
   - new function to solve the netpoll synchronization problem

 irqchips:
   - new driver for STi based devices
   - new driver for Vybrid MSCM
   - massive cleanup of the GIC driver by moving the GIC-addons to
     stacked irqdomains
   - the usual pile of fixes and updates to the various chip drivers"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits)
  irqchip: GICv3: Add support for irq_[get, set]_irqchip_state()
  irqchip: GIC: Add support for irq_[get, set]_irqchip_state()
  genirq: Allow the irqchip state of an IRQ to be save/restored
  genirq: MSI: Fix freeing of unallocated MSI
  irqchip: renesas-irqc: Add wake-up support
  irqchip: armada-370-xp: Allow using wakeup source
  irqchip: mips-gic: Add new functions to start/stop the GIC counter
  irqchip: tegra: Add Tegra210 support
  irqchip: digicolor: Move digicolor_set_gc to init section
  irqchip: renesas-irqc: Add functional clock to bindings
  irqchip: renesas-irqc: Add minimal runtime PM support
  irqchip: renesas-irqc: Add more register documentation
  DT: exynos: update PMU binding
  ARM: exynos4/5: convert pmu wakeup to stacked domains
  irqchip: gic: Don't complain in gic_get_cpumask() if UP system
  ARM: zynq: switch from gic_arch_extn to gic_set_irqchip_flags
  ARM: ux500: switch from gic_arch_extn to gic_set_irqchip_flags
  ARM: shmobile: remove use of gic_arch_extn.irq_set_wake
  irqchip: gic: Add an entry point to set up irqchip flags
  ARM: omap: convert wakeupgen to stacked domains
  ...
 2015-04-13 15:54:50 -07:00
Linus Torvalds 3be1b98e07 PCI changes for the v4.1 merge window: 
Enumeration
     - Read capability list as dwords, not bytes (Sean O. Stalley)
 
   Resource management
     - Don't check for PNP overlaps with unassigned PCI BARs (Bjorn Helgaas)
     - Mark invalid BARs as unassigned (Bjorn Helgaas)
     - Show driver, BAR#, and resource on pci_ioremap_bar() failure (Bjorn Helgaas)
     - Fail pci_ioremap_bar() on unassigned resources (Bjorn Helgaas)
     - Assign resources before drivers claim devices (Yijing Wang)
     - Claim bus resources before pci_bus_add_devices() (Yijing Wang)
 
   Power management
     - Optimize device state transition delays (Aaron Lu)
     - Don't clear ASPM bits when the FADT declares it's unsupported (Matthew Garrett)
 
   Virtualization
     - Add ACS quirks for Intel 1G NICs (Alex Williamson)
 
   IOMMU
     - Add ptr to OF node arg to of_iommu_configure() (Murali Karicheri)
     - Move of_dma_configure() to device.c to help re-use (Murali Karicheri)
     - Fix size when dma-range is not used (Murali Karicheri)
     - Add helper functions pci_get[put]_host_bridge_device() (Murali Karicheri)
     - Add of_pci_dma_configure() to update DMA configuration (Murali Karicheri)
     - Update DMA configuration from DT (Murali Karicheri)
     - dma-mapping: limit IOMMU mapping size (Murali Karicheri)
     - Calculate device DMA masks based on DT dma-range size (Murali Karicheri)
 
   ARM Versatile host bridge driver
     - Check for devm_ioremap_resource() failures (Jisheng Zhang)
 
   Broadcom iProc host bridge driver
     - Add Broadcom iProc PCIe driver (Ray Jui)
 
   Marvell MVEBU host bridge driver
     - Add suspend/resume support (Thomas Petazzoni)
 
   Renesas R-Car host bridge driver
     - Fix position of MSI enable bit (Nobuhiro Iwamatsu)
     - Write zeroes to reserved PCIEPARL bits (Nobuhiro Iwamatsu)
     - Change PCIEPARL and PCIEPARH to PCIEPALR and PCIEPAUR (Nobuhiro Iwamatsu)
     - Verify that mem_res is 64K-aligned (Nobuhiro Iwamatsu)
 
   Samsung Exynos host bridge driver
     - Fix INTx enablement statement termination error (Jaehoon Chung)
 
   Miscellaneous
     - Make a shareable UUID for PCI firmware ACPI _DSM (Aaron Lu)
     - Clarify policy for vendor IDs in pci.txt (Michael S. Tsirkin)
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Merge tag 'pci-v4.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI changes from Bjorn Helgaas:
 "Enumeration
    - Read capability list as dwords, not bytes (Sean O. Stalley)

  Resource management
    - Don't check for PNP overlaps with unassigned PCI BARs (Bjorn Helgaas)
    - Mark invalid BARs as unassigned (Bjorn Helgaas)
    - Show driver, BAR#, and resource on pci_ioremap_bar() failure (Bjorn Helgaas)
    - Fail pci_ioremap_bar() on unassigned resources (Bjorn Helgaas)
    - Assign resources before drivers claim devices (Yijing Wang)
    - Claim bus resources before pci_bus_add_devices() (Yijing Wang)

  Power management
    - Optimize device state transition delays (Aaron Lu)
    - Don't clear ASPM bits when the FADT declares it's unsupported (Matthew Garrett)

  Virtualization
    - Add ACS quirks for Intel 1G NICs (Alex Williamson)

  IOMMU
    - Add ptr to OF node arg to of_iommu_configure() (Murali Karicheri)
    - Move of_dma_configure() to device.c to help re-use (Murali Karicheri)
    - Fix size when dma-range is not used (Murali Karicheri)
    - Add helper functions pci_get[put]_host_bridge_device() (Murali Karicheri)
    - Add of_pci_dma_configure() to update DMA configuration (Murali Karicheri)
    - Update DMA configuration from DT (Murali Karicheri)
    - dma-mapping: limit IOMMU mapping size (Murali Karicheri)
    - Calculate device DMA masks based on DT dma-range size (Murali Karicheri)

  ARM Versatile host bridge driver
    - Check for devm_ioremap_resource() failures (Jisheng Zhang)

  Broadcom iProc host bridge driver
    - Add Broadcom iProc PCIe driver (Ray Jui)

  Marvell MVEBU host bridge driver
    - Add suspend/resume support (Thomas Petazzoni)

  Renesas R-Car host bridge driver
    - Fix position of MSI enable bit (Nobuhiro Iwamatsu)
    - Write zeroes to reserved PCIEPARL bits (Nobuhiro Iwamatsu)
    - Change PCIEPARL and PCIEPARH to PCIEPALR and PCIEPAUR (Nobuhiro Iwamatsu)
    - Verify that mem_res is 64K-aligned (Nobuhiro Iwamatsu)

  Samsung Exynos host bridge driver
    - Fix INTx enablement statement termination error (Jaehoon Chung)

  Miscellaneous
    - Make a shareable UUID for PCI firmware ACPI _DSM (Aaron Lu)
    - Clarify policy for vendor IDs in pci.txt (Michael S. Tsirkin)"

* tag 'pci-v4.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (36 commits)
  PCI: Read capability list as dwords, not bytes
  PCI: layerscape: Simplify platform_get_resource_byname() failure checking
  PCI: keystone: Don't dereference possible NULL pointer
  PCI: versatile: Check for devm_ioremap_resource() failures
  PCI: Don't clear ASPM bits when the FADT declares it's unsupported
  PCI: Clarify policy for vendor IDs in pci.txt
  PCI/ACPI: Optimize device state transition delays
  PCI: Export pci_find_host_bridge() for use inside PCI core
  PCI: Make a shareable UUID for PCI firmware ACPI _DSM
  PCI: Fix typo in Thunderbolt kernel message
  PCI: exynos: Fix INTx enablement statement termination error
  PCI: iproc: Add Broadcom iProc PCIe support
  PCI: iproc: Add DT docs for Broadcom iProc PCIe driver
  PCI: Export symbols required for loadable host driver modules
  PCI: Add ACS quirks for Intel 1G NICs
  PCI: mvebu: Add suspend/resume support
  PCI: Cleanup control flow
  sparc/PCI: Claim bus resources before pci_bus_add_devices()
  PCI: Assign resources before drivers claim devices (pci_scan_root_bus())
  PCI: Fail pci_ioremap_bar() on unassigned resources
  ...
 2015-04-13 15:45:47 -07:00
Linus Torvalds 392b46f31f HSI changes for the v4.1 series 
* nokia-modem: support speech data
 * misc. fixes
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Merge tag 'hsi-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi

Pull HSI changes from Sebastian Reichel:

 - nokia-modem: support speech data
 - misc fixes

* tag 'hsi-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi:
  HSI: cmt_speech: fix error return code
  HSI: nokia-modem: Add cmt-speech support
  HSI: cmt_speech: Add cmt-speech driver
  HSI: nokia-modem: fix error return code
 2015-04-13 15:36:31 -07:00
Linus Torvalds a21c1ea656 power supply and reset changes for the v4.1 series 
* new API for safe access of power supply function attrs
  * devres support for power supply (un)registration
  * new drivers / chips
   - generic syscon based poweroff driver
   - iio & charger driver for da9150
   - fuel gauge driver for axp288
   - bq27x00: add support for bq27510
   - bq2415x: add support for bq24157s
  * twl4030-madc-battery: convert to iio consumer
  * misc fixes
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Merge tag 'for-v4.1' of git://git.infradead.org/battery-2.6

Pull power supply and reset changes from Sebastian Reichel:

 - new API for safe access of power supply function attrs

 - devres support for power supply (un)registration

 - new drivers / chips:
     - generic syscon based poweroff driver
     - iio & charger driver for da9150
     - fuel gauge driver for axp288
     - bq27x00: add support for bq27510
     - bq2415x: add support for bq24157s

 - twl4030-madc-battery: convert to iio consumer

 - misc fixes

* tag 'for-v4.1' of git://git.infradead.org/battery-2.6: (66 commits)
  power: twl4030_madc_battery: Add missing MODULE_ALIAS
  power: twl4030-madc-battery: Convert to iio consumer.
  dt: power: Add docs for generic SYSCON poweroff driver.
  power: reset: Add generic SYSCON register mapped poweroff.
  power: max17042_battery: add missed blank
  power: max17042_battery: Use reg type instead of chip type
  power/reset: at91: big endian fixes for atsama5d3x
  power_supply: charger-manager: Fix dereferencing of ERR_PTR
  HID: input: Fix NULL pointer dereference when power_supply_register fails
  power: constify of_device_id array
  power/reset/rmobile-reset.c: Fix !HAS_IOMEM build
  power_supply: 88pm860x_charger: Fix possible NULL pointer dereference and use of initialized variable
  arm: mach-pxa: Decrement the power supply's device reference counter
  mfd: ab8500: Decrement the power supply's device reference counter
  power_supply: bq2415x_charger: Decrement the power supply's device reference counter
  power_supply: 88pm860x_charger: Decrement the power supply's device reference counter
  x86/olpc/xo15/sci: Use newly added power_supply_put API
  x86/olpc/xo1/sci: Use newly added power_supply_put API
  power_supply: charger-manager: Decrement the power supply's device reference counter
  power_supply: Increment power supply use counter when obtaining references
  ...
 2015-04-13 15:21:34 -07:00
Linus Torvalds d700b05671 regulator: Updates for v4.1 
Another release, another set of regulator updates.  Not much of it is
 showing up in the code yet but there's been a lot of discussion going on
 about how to enhance the regulator API to work better with modern SoCs
 which have a microcontroller sitting between Linux and the hardware.
 I'm hopeful that'll start to come through into mainline for v4.2 but
 it's not quite there for v4.1 - what we do have (along with the usual
 small updates is) is:
 
  - Work from Bjorn Andersson on refactoring the configuration of
    regulator loading interfaces to be useful for use with
    microcontrollers, the existing interfaces were never actually useful
    for anything as-is since nobody was willing to put enough data into
    public code.
  - A summary tree display in debugfs from Heiko Stübner.
  - Support for act6000 regulators.
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Merge tag 'regulator-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "Another release, another set of regulator updates.  Not much of it is
  showing up in the code yet but there's been a lot of discussion going
  on about how to enhance the regulator API to work better with modern
  SoCs which have a microcontroller sitting between Linux and the
  hardware.

  I'm hopeful that'll start to come through into mainline for v4.2 but
  it's not quite there for v4.1 - what we do have (along with the usual
  small updates is) is:

   - work from Bjorn Andersson on refactoring the configuration of
     regulator loading interfaces to be useful for use with
     microcontrollers, the existing interfaces were never actually
     useful for anything as-is since nobody was willing to put enough
     data into public code.

   - a summary tree display in debugfs from Heiko Stübner.

   - support for act6000 regulators"

* tag 'regulator-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (34 commits)
  regulator: max8660: Handle empty regulator data
  regulator: output current-limit for all regulators in summary
  regulator: add a summary tree in debugfs
  regulator: qcom: Tidy up probe()
  regulator: qcom: Rework to single platform device
  regulator: qcom: Refactor of-parsing code
  regulator: qcom: Don't enable DRMS in driver
  regulator: max8660: fix assignment of pdata to data that becomes dead
  regulator: Defer lookup of supply to regulator_get
  mfd: max77693: Remove unused structures
  regulator: max77693: Let core parse DT and drop board files support
  regulator: Ensure unique regulator debugfs directory names
  regulator: stw481x: Remove unused fields from struct stw481x
  regulator: palmas: Add has_regen3 check for TPS659038
  regulator: constify of_device_id array
  regulator: fixes for regulator_set_optimum_mode name change
  regulator: Drop temporary regulator_set_optimum_mode wrapper
  usb: phy: phy-msm-usb: Rename regulator_set_optimum_mode
  usb: phy: ab8500-usb: Rename regulator_set_optimum_mode
  ufs: Rename of regulator_set_optimum_mode
  ...
 2015-04-13 15:13:25 -07:00
Linus Torvalds 0055dc5b23 spi: Updates for v4.1 
Only one framework update this time around, a change from Lars-Peter to
 move full to pm_ops and remove the legacy bus PM ops.  Otherwise it's
 all driver updates:
 
  - Make the spidev driver complain loudly if registered as spidev with
    DT rather than with a compatible string, hopefully helping people
    avoid making that mistake.
  - Error handling and robustness fixes for the Designware and Intel MID
    drivers from Andy Shevchenko.
  - Substantial performance improvements for the Raspberry Pi driver from
    Martin Sperl.
  - Several new features for spidev_test from Adrian Remonda and Ian
    Abbott.
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Merge tag 'spi-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "Only one framework update this time around, a change from Lars-Peter
  to move full to pm_ops and remove the legacy bus PM ops.  Otherwise
  it's all driver updates:

   - make the spidev driver complain loudly if registered as spidev with
     DT rather than with a compatible string, hopefully helping people
     avoid making that mistake.

   - error handling and robustness fixes for the Designware and Intel
     MID drivers from Andy Shevchenko.

   - substantial performance improvements for the Raspberry Pi driver
     from Martin Sperl.

   - several new features for spidev_test from Adrian Remonda and Ian
     Abbott"

* tag 'spi-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (75 commits)
  spi: bcm2835: enabling polling mode for transfers shorter than 30us
  spi: bcm2835: transform native-cs to gpio-cs on first spi_setup
  spi: img-spfi: Control CS lines with GPIO
  spi: img-spfi: Reset controller after each message
  spi: img-spfi: Implement a handle_err() callback
  spi: img-spfi: Setup TRANSACTION register before CONTROL register
  spi: Make master->handle_err() callback optional to avoid crashes
  spi: img-spfi: Limit bit clock to 1/4th of input clock
  spi: img-spfi: Implement a prepare_message() callback
  spi: fsl-dspi: Add ~50ns delay between cs and sck
  spi: fsl-dspi: Add cs-sck delays
  spi: fsl-dspi: Fix clock rate scale values
  spi: signedness bug in qspi_trigger_transfer_out_int()
  spi: imx: read back the RX/TX watermark levels earlier
  spi: spi-bfin5xx: Initialize cr_width in bfin_spi_pump_transfers()
  spi: bitbang: only toggle bitchanges
  spi: pxa2xx: missing break in pxa2xx_ssp_get_clk_div()
  spi: fsl-dspi: Fix clock rate scale values
  spi: Using Trigger number to transmit/receive data
  spi: bcm2835: fill FIFO before enabling interrupts to reduce interrupts/message
  ...
 2015-04-13 15:05:40 -07:00
Linus Torvalds 1b57c7c2fb regmap: Patch for v4.1 
Just one patch for regmap this time around, a change from Steven Rostedt
 to prettify the way we're making the regmap internal header available to
 the trace events (it turns out that the trace subsystem doesn't actually
 need to be in trace/events).
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Merge tag 'regmap-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap update from Mark Brown:
 "Just one patch for regmap this time around, a change from Steven
  Rostedt to prettify the way we're making the regmap internal header
  available to the trace events (it turns out that the trace subsystem
  doesn't actually need to be in trace/events)"

* tag 'regmap-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: Move tracing header into drivers/base/regmap
 2015-04-13 15:00:55 -07:00
Linus Torvalds 8d9095c667 MMC core: 
- Add support for marking HPI as broken through devicetree
 - Enable runtime PM management of host devices
 - Remove the ->enable|disable() callbacks
 - Restructure code and cleanups
 - Refreshed some of the MMC sections in MAINTAINERS
 
 MMC host:
 - dw_mmc: HS400 mode support
 - dw_mmc: Add the cmd11 timer to detect a timeout
 - dw_mmc: Endian agnostic IO accessors
 - dw_mmc: Bugfixes
 - sh_mmcif: Add exclusion between cmd and interrupt
 - omap_hsmmc: Hibernation support
 - omap_hsmmc: Rework and simplify cover/card detect
 - omap_hsmmc: Stop using ->enable|disable() callbacks
 - atmel-mci: Endian agnostic IO
 - sunxi: Enable MMC_CAP_SDIO_IRQ
 - sdhci-st: Add support for the stih407 family silicon
 - sdhci-st: UHS card support in SDR104 mode
 - sdhci-st: HS200 mode support
 - sdhci-esdhc-imx: Use common mmc DT parser
 - sdhci-of-arasan: Use common mmc DT parser
 - sdhci-iproc: Add new driver for Broadcom IPROC SDHCI controller
 - sdhci-tegra: Convert to GPIO descriptors
 - sdhci-tegra: Optmize write_w path for tegra114 and later
 - sdhci-sirf: Update tuning procedure
 - sdhci: Fix card presence logic
 - sdhci: Cleanups and consolidation
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Merge tag 'mmc-v4.1' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Add support for marking HPI as broken through devicetree
   - Enable runtime PM management of host devices
   - Remove the ->enable|disable() callbacks
   - Restructure code and cleanups
   - Refreshed some of the MMC sections in MAINTAINERS

  MMC host:
   - dw_mmc: HS400 mode support
   - dw_mmc: Add the cmd11 timer to detect a timeout
   - dw_mmc: Endian agnostic IO accessors
   - dw_mmc: Bugfixes
   - sh_mmcif: Add exclusion between cmd and interrupt
   - omap_hsmmc: Hibernation support
   - omap_hsmmc: Rework and simplify cover/card detect
   - omap_hsmmc: Stop using ->enable|disable() callbacks
   - atmel-mci: Endian agnostic IO
   - sunxi: Enable MMC_CAP_SDIO_IRQ
   - sdhci-st: Add support for the stih407 family silicon
   - sdhci-st: UHS card support in SDR104 mode
   - sdhci-st: HS200 mode support
   - sdhci-esdhc-imx: Use common mmc DT parser
   - sdhci-of-arasan: Use common mmc DT parser
   - sdhci-iproc: Add new driver for Broadcom IPROC SDHCI controller
   - sdhci-tegra: Convert to GPIO descriptors
   - sdhci-tegra: Optmize write_w path for tegra114 and later
   - sdhci-sirf: Update tuning procedure
   - sdhci: Fix card presence logic
   - sdhci: Cleanups and consolidation"

* tag 'mmc-v4.1' of git://git.linaro.org/people/ulf.hansson/mmc: (79 commits)
  mmc: sdhci-st: Update ST SDHCI binding documentation.
  mmc: sdhci-st: Update the quirks for this controller.
  mmc: sdhci-st: Add sdhci_st_set_uhs_signaling function.
  mmc: sdhci-st: Add st_mmcss_cconfig function to configure mmcss glue registers.
  mmc: sdhci-st: Add delay management functions for top registers (eMMC).
  mmc: sdhci-st: Add support for de-asserting reset signal and top regs resource
  mmc: sdhci-st: Add macros for register offsets and bitfields for mmcss glue regs
  mmc: sdhci-esdhc-imx: Call mmc_of_parse()
  mmc: dw_mmc: Add locking around cmd11 timer
  mmc: dw_mmc: Add a return in an unexpected cmd11 timeout
  mmc: dw_mmc: Increase cmd11 timeout to 500ms
  mmc: dw_mmc: fix fifo ordering in big endian
  mmc: dw_mmc: change idmac descriptor files to __le32
  mmc: dw_mmc: make IO accessors endian agnostic
  mmc: core: Convert the error field in struct mmc_command|data into an int
  mmc: sdhci-of-arasan: Call OF parsing for MMC
  mmc: sdhci-pci: fix 64 BIT DMA quirks for rtsx
  mmc: Add support for marking hpi as broken through devicetree
  mmc: sdhci-tegra: convert to use GPIO descriptors
  mmc: omap_hsmmc: use generic slot-gpio isr to manage card detect pin
  ...
 2015-04-13 14:53:03 -07:00
Linus Torvalds 6cf78d4b37 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 changes in this cycle were:

   - reduce the x86/32 PAE per task PGD allocation overhead from 4K to
     0.032k (Fenghua Yu)

   - early_ioremap/memunmap() usage cleanups (Juergen Gross)

   - gbpages support cleanups (Luis R Rodriguez)

   - improve AMD Bulldozer (family 0x15) ASLR I$ aliasing workaround to
     increase randomization by 3 bits (per bootup) (Hector
     Marco-Gisbert)

   - misc fixlets"

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Improve AMD Bulldozer ASLR workaround
  x86/mm/pat: Initialize __cachemode2pte_tbl[] and __pte2cachemode_tbl[] in a bit more readable fashion
  init.h: Clean up the __setup()/early_param() macros
  x86/mm: Simplify probe_page_size_mask()
  x86/mm: Further simplify 1 GB kernel linear mappings handling
  x86/mm: Use early_param_on_off() for direct_gbpages
  init.h: Add early_param_on_off()
  x86/mm: Simplify enabling direct_gbpages
  x86/mm: Use IS_ENABLED() for direct_gbpages
  x86/mm: Unexport set_memory_ro() and set_memory_rw()
  x86/mm, efi: Use early_ioremap() in arch/x86/platform/efi/efi-bgrt.c
  x86/mm: Use early_memunmap() instead of early_iounmap()
  x86/mm/pat: Ensure different messages in STRICT_DEVMEM and PAT cases
  x86/mm: Reduce PAE-mode per task pgd allocation overhead from 4K to 32 bytes
 2015-04-13 13:31:32 -07:00
Linus Torvalds 60f898eeaa Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 asm changes from Ingo Molnar:
 "There were lots of changes in this development cycle:

   - over 100 separate cleanups, restructuring changes, speedups and
     fixes in the x86 system call, irq, trap and other entry code, part
     of a heroic effort to deobfuscate a decade old spaghetti asm code
     and its C code dependencies (Denys Vlasenko, Andy Lutomirski)

   - alternatives code fixes and enhancements (Borislav Petkov)

   - simplifications and cleanups to the compat code (Brian Gerst)

   - signal handling fixes and new x86 testcases (Andy Lutomirski)

   - various other fixes and cleanups

  By their nature many of these changes are risky - we tried to test
  them well on many different x86 systems (there are no known
  regressions), and they are split up finely to help bisection - but
  there's still a fair bit of residual risk left so caveat emptor"

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (148 commits)
  perf/x86/64: Report regs_user->ax too in get_regs_user()
  perf/x86/64: Simplify regs_user->abi setting code in get_regs_user()
  perf/x86/64: Do report user_regs->cx while we are in syscall, in get_regs_user()
  perf/x86/64: Do not guess user_regs->cs, ss, sp in get_regs_user()
  x86/asm/entry/32: Tidy up JNZ instructions after TESTs
  x86/asm/entry/64: Reduce padding in execve stubs
  x86/asm/entry/64: Remove GET_THREAD_INFO() in ret_from_fork
  x86/asm/entry/64: Simplify jumps in ret_from_fork
  x86/asm/entry/64: Remove a redundant jump
  x86/asm/entry/64: Optimize [v]fork/clone stubs
  x86/asm/entry: Zero EXTRA_REGS for stub32_execve() too
  x86/asm/entry/64: Move stub_x32_execvecloser() to stub_execveat()
  x86/asm/entry/64: Use common code for rt_sigreturn() epilogue
  x86/asm/entry/64: Add forgotten CFI annotation
  x86/asm/entry/irq: Simplify interrupt dispatch table (IDT) layout
  x86/asm/entry/64: Move opportunistic sysret code to syscall code path
  x86, selftests: Add sigreturn selftest
  x86/alternatives: Guard NOPs optimization
  x86/asm/entry: Clear EXTRA_REGS for all executable formats
  x86/signal: Remove pax argument from restore_sigcontext
  ...
 2015-04-13 13:16:36 -07:00
Linus Torvalds 7fd56474db Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull timer updates from Ingo Molnar:
 "The main changes in this cycle were:

   - clockevents state machine cleanups and enhancements (Viresh Kumar)

   - clockevents broadcast notifier horror to state machine conversion
     and related cleanups (Thomas Gleixner, Rafael J Wysocki)

   - clocksource and timekeeping core updates (John Stultz)

   - clocksource driver updates and fixes (Ben Dooks, Dmitry Osipenko,
     Hans de Goede, Laurent Pinchart, Maxime Ripard, Xunlei Pang)

   - y2038 fixes (Xunlei Pang, John Stultz)

   - NMI-safe ktime_get_raw_fast() and general refactoring of the clock
     code, in preparation to perf's per event clock ID support (Peter
     Zijlstra)

   - generic sched/clock fixes, optimizations and cleanups (Daniel
     Thompson)

   - clockevents cpu_down() race fix (Preeti U Murthy)"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (94 commits)
  timers/PM: Drop unnecessary braces from tick_freeze()
  timers/PM: Fix up tick_unfreeze()
  timekeeping: Get rid of stale comment
  clockevents: Cleanup dead cpu explicitely
  clockevents: Make tick handover explicit
  clockevents: Remove broadcast oneshot control leftovers
  sched/idle: Use explicit broadcast oneshot control function
  ARM: Tegra: Use explicit broadcast oneshot control function
  ARM: OMAP: Use explicit broadcast oneshot control function
  intel_idle: Use explicit broadcast oneshot control function
  ACPI/idle: Use explicit broadcast control function
  ACPI/PAD: Use explicit broadcast oneshot control function
  x86/amd/idle, clockevents: Use explicit broadcast oneshot control functions
  clockevents: Provide explicit broadcast oneshot control functions
  clockevents: Remove the broadcast control leftovers
  ARM: OMAP: Use explicit broadcast control function
  intel_idle: Use explicit broadcast control function
  cpuidle: Use explicit broadcast control function
  ACPI/processor: Use explicit broadcast control function
  ACPI/PAD: Use explicit broadcast control function
  ...
 2015-04-13 11:08:28 -07:00
Linus Torvalds 49d2953c72 Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull scheduler changes from Ingo Molnar:
 "Major changes:

   - Reworked CPU capacity code, for better SMP load balancing on
     systems with assymetric CPUs. (Vincent Guittot, Morten Rasmussen)

   - Reworked RT task SMP balancing to be push based instead of pull
     based, to reduce latencies on large CPU count systems. (Steven
     Rostedt)

   - SCHED_DEADLINE support updates and fixes. (Juri Lelli)

   - SCHED_DEADLINE task migration support during CPU hotplug. (Wanpeng Li)

   - x86 mwait-idle optimizations and fixes. (Mike Galbraith, Len Brown)

   - sched/numa improvements. (Rik van Riel)

   - various cleanups"

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits)
  sched/core: Drop debugging leftover trace_printk call
  sched/deadline: Support DL task migration during CPU hotplug
  sched/core: Check for available DL bandwidth in cpuset_cpu_inactive()
  sched/deadline: Always enqueue on previous rq when dl_task_timer() fires
  sched/core: Remove unused argument from init_[rt|dl]_rq()
  sched/deadline: Fix rt runtime corruption when dl fails its global constraints
  sched/deadline: Avoid a superfluous check
  sched: Improve load balancing in the presence of idle CPUs
  sched: Optimize freq invariant accounting
  sched: Move CFS tasks to CPUs with higher capacity
  sched: Add SD_PREFER_SIBLING for SMT level
  sched: Remove unused struct sched_group_capacity::capacity_orig
  sched: Replace capacity_factor by usage
  sched: Calculate CPU's usage statistic and put it into struct sg_lb_stats::group_usage
  sched: Add struct rq::cpu_capacity_orig
  sched: Make scale_rt invariant with frequency
  sched: Make sched entity usage tracking scale-invariant
  sched: Remove frequency scaling from cpu_capacity
  sched: Track group sched_entity usage contributions
  sched: Add sched_avg::utilization_avg_contrib
  ...
 2015-04-13 10:47:34 -07:00
Linus Torvalds cc76ee75a9 Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull core locking changes from Ingo Molnar:
 "Main changes:

   - jump label asm preparatory work for PowerPC (Anton Blanchard)

   - rwsem optimizations and cleanups (Davidlohr Bueso)

   - mutex optimizations and cleanups (Jason Low)

   - futex fix (Oleg Nesterov)

   - remove broken atomicity checks from {READ,WRITE}_ONCE() (Peter
     Zijlstra)"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  powerpc, jump_label: Include linux/jump_label.h to get HAVE_JUMP_LABEL define
  jump_label: Allow jump labels to be used in assembly
  jump_label: Allow asm/jump_label.h to be included in assembly
  locking/mutex: Further simplify mutex_spin_on_owner()
  locking: Remove atomicy checks from {READ,WRITE}_ONCE
  locking/rtmutex: Rename argument in the rt_mutex_adjust_prio_chain() documentation as well
  locking/rwsem: Fix lock optimistic spinning when owner is not running
  locking: Remove ACCESS_ONCE() usage
  locking/rwsem: Check for active lock before bailing on spinning
  locking/rwsem: Avoid deceiving lock spinners
  locking/rwsem: Set lock ownership ASAP
  locking/rwsem: Document barrier need when waking tasks
  locking/futex: Check PF_KTHREAD rather than !p->mm to filter out kthreads
  locking/mutex: Refactor mutex_spin_on_owner()
  locking/mutex: In mutex_spin_on_owner(), return true when owner changes
 2015-04-13 10:27:28 -07:00
Linus Torvalds 9c65e12a55 Merge branch 'core-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull EFI update from Ingo Molnar:
 "This tree includes various fixes, cleanups, a new efi=debug boot
  option and EFI boot stub memory allocation optimizations"

* 'core-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/libstub: Retrieve FDT size when loaded from UEFI config table
  efi: Clean up the efi_call_phys_[prolog|epilog]() save/restore interaction
  efi: Disable interrupts around EFI calls, not in the epilog/prolog calls
  x86/efi: Add a "debug" option to the efi= cmdline
  firmware: dmi_scan: Use direct access to static vars
  firmware: dmi_scan: Use full dmi version for SMBIOS3
 2015-04-13 10:22:30 -07:00
Linus Torvalds 9003601310 The most interesting bit here is irqfd/ioeventfd support for ARM and ARM64. 
ARM/ARM64: fixes for live migration, irqfd and ioeventfd support (enabling
 vhost, too), page aging
 
 s390: interrupt handling rework, allowing to inject all local interrupts
 via new ioctl and to get/set the full local irq state for migration
 and introspection.  New ioctls to access memory by virtual address,
 and to get/set the guest storage keys.  SIMD support.
 
 MIPS: FPU and MIPS SIMD Architecture (MSA) support.  Includes some patches
 from Ralf Baechle's MIPS tree.
 
 x86: bugfixes (notably for pvclock, the others are small) and cleanups.
 Another small latency improvement for the TSC deadline timer.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Paolo Bonzini:
 "First batch of KVM changes for 4.1

  The most interesting bit here is irqfd/ioeventfd support for ARM and
  ARM64.

  Summary:

  ARM/ARM64:
     fixes for live migration, irqfd and ioeventfd support (enabling
     vhost, too), page aging

  s390:
     interrupt handling rework, allowing to inject all local interrupts
     via new ioctl and to get/set the full local irq state for migration
     and introspection.  New ioctls to access memory by virtual address,
     and to get/set the guest storage keys.  SIMD support.

  MIPS:
     FPU and MIPS SIMD Architecture (MSA) support.  Includes some
     patches from Ralf Baechle's MIPS tree.

  x86:
     bugfixes (notably for pvclock, the others are small) and cleanups.
     Another small latency improvement for the TSC deadline timer"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (146 commits)
  KVM: use slowpath for cross page cached accesses
  kvm: mmu: lazy collapse small sptes into large sptes
  KVM: x86: Clear CR2 on VCPU reset
  KVM: x86: DR0-DR3 are not clear on reset
  KVM: x86: BSP in MSR_IA32_APICBASE is writable
  KVM: x86: simplify kvm_apic_map
  KVM: x86: avoid logical_map when it is invalid
  KVM: x86: fix mixed APIC mode broadcast
  KVM: x86: use MDA for interrupt matching
  kvm/ppc/mpic: drop unused IRQ_testbit
  KVM: nVMX: remove unnecessary double caching of MAXPHYADDR
  KVM: nVMX: checks for address bits beyond MAXPHYADDR on VM-entry
  KVM: x86: cache maxphyaddr CPUID leaf in struct kvm_vcpu
  KVM: vmx: pass error code with internal error #2
  x86: vdso: fix pvclock races with task migration
  KVM: remove kvm_read_hva and kvm_read_hva_atomic
  KVM: x86: optimize delivery of TSC deadline timer interrupt
  KVM: x86: extract blocking logic from __vcpu_run
  kvm: x86: fix x86 eflags fixed bit
  KVM: s390: migrate vcpu interrupt state
  ...
 2015-04-13 09:47:01 -07:00
Linus Torvalds 6a23b45f1d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 
Pull vfs and fs fixes from Al Viro:
 "Several AIO and OCFS2 fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  ocfs2: _really_ sync the right range
  ocfs2_file_write_iter: keep return value and current position update in sync
  [regression] ocfs2: do *not* increment ->ki_pos twice
  ioctx_alloc(): fix vma (and file) leak on failure
  fix mremap() vs. ioctx_kill() race
 2015-04-12 10:56:12 -07:00
Mark Brown 8afba181b9 Merge remote-tracking branches 'spi/topic/omap-100k', 'spi/topic/omap-uwire', 'spi/topic/pl022', 'spi/topic/pm' and 'spi/topic/pxa2xx' into spi-next 2015-04-11 23:09:18 +01:00
Mark Brown 431959c079 Merge remote-tracking branches 'spi/topic/blackfin', 'spi/topic/cadence', 'spi/topic/dw' and 'spi/topic/err' into spi-next 2015-04-11 23:09:09 +01:00
Mark Brown f9de73426c Merge remote-tracking branches 'spi/topic/atmel', 'spi/topic/bcm2385', 'spi/topic/bcm2835', 'spi/topic/bcm53xx' and 'spi/topic/bitbang' into spi-next 2015-04-11 23:09:03 +01:00
Thomas Gleixner b7dccbea6b irqchip core change for v4.1 (round 3) 
- Purge the gic_arch_extn hacks and abuse by using the new stacked domains
 
    NOTE: Due to the nature of these changes, patches crossing subsystems have
          been kept together in their own branches.
 
     - tegra
 
        - Handle the LIC properly
 
     - omap
 
        - Convert crossbar to stacked domains
        - kill arm,routable-irqs in GIC binding
 
     - exynos
 
        - Convert PMU wakeup to stacked domains
 
     - shmobile, ux500, zynq (irq_set_wake branch)
 
        - Switch from abusing gic_arch_extn to using gic_set_irqchip_flags
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Merge tag 'irqchip-core-4.1-3' of git://git.infradead.org/users/jcooper/linux into irq/core

irqchip core change for v4.1 (round 3) from Jason Cooper

 Purge the gic_arch_extn hacks and abuse by using the new stacked domains

   NOTE: Due to the nature of these changes, patches crossing subsystems have
         been kept together in their own branches.

    - tegra
       - Handle the LIC properly

    - omap
       - Convert crossbar to stacked domains
       - kill arm,routable-irqs in GIC binding

    - exynos
       - Convert PMU wakeup to stacked domains

    - shmobile, ux500, zynq (irq_set_wake branch)
       - Switch from abusing gic_arch_extn to using gic_set_irqchip_flags
 2015-04-11 11:17:28 +02:00
Thomas Gleixner 425b655ce4 irqchip core changes for v4.1 (round 2) 
- gic
 
     - Tolerate uni-processor systems better in gic_get_cpumask()
 
  - mvebu
 
     - Handle per-cpu interrupts properly
     - Enable PMU interrupts
     - Enable wakeup source
 
  - vybrid
 
     - Add MSCM interrupt router
 
  - renesas
 
     - Add PM and wakeup support
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Merge tag 'irqchip-core-4.1-2' of git://git.infradead.org/users/jcooper/linux into irq/core

irqchip core changes for v4.1 (round 2) from Jason Cooper

 - gic
    - Tolerate uni-processor systems better in gic_get_cpumask()

 - mvebu
    - Handle per-cpu interrupts properly
    - Enable PMU interrupts
    - Enable wakeup source

 - vybrid
    - Add MSCM interrupt router

 - renesas
    - Add PM and wakeup support
 2015-04-11 11:15:38 +02:00
Linus Torvalds 3259b12ae1 SCSI fixes on 20150410 
This is our remaining set of three fixes for 4.0: two oops fixes(one for cable
 pulls triggering oopses and the other be2iscsi specific) and one warn on in
 sysfs on multipath devices using enclosures.
 
 Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is our remaining set of three fixes for 4.0: two oops fixes(one
  for cable pulls triggering oopses and the other be2iscsi specific) and
  one warn on in sysfs on multipath devices using enclosures"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  Defer processing of REQ_PREEMPT requests for blocked devices
  be2iscsi: Fix kernel panic when device initialization fails
  enclosure: fix WARN_ON removing an adapter in multi-path devices
 2015-04-10 17:41:47 -07:00
Jason Cooper a01e7b3258 Merge branch 'irqchip/stacked-irq_set_wake' into irqchip/core 
Conflicts:
	drivers/irqchip/irq-gic.c
 2015-04-10 22:58:19 +00:00
Jason Cooper 07c523f149 Merge branch 'irqchip/stacked-omap' into irqchip/core 2015-04-10 22:57:56 +00:00
Mark Brown bea3672833 Merge remote-tracking branches 'regulator/topic/mode', 'regulator/topic/notifier', 'regulator/topic/palmas', 'regulator/topic/qcom' and 'regulator/topic/stw481x' into regulator-next 2015-04-10 19:16:03 +01:00
Mark Brown 3984c9da45 Merge remote-tracking branches 'regulator/topic/dbx500', 'regulator/topic/load-op', 'regulator/topic/max77693' and 'regulator/topic/max8660' into regulator-next 2015-04-10 19:16:02 +01:00
Mark Brown e5073849f9 Merge remote-tracking branches 'regulator/topic/act8865', 'regulator/topic/arizona-ldo1', 'regulator/topic/arizona-micsupp' and 'regulator/topic/da9211' into regulator-next 2015-04-10 19:16:00 +01:00
Mark Brown 5fc31b43d5 Merge remote-tracking branch 'regulator/topic/core' into regulator-next 2015-04-10 19:15:59 +01:00
Bjorn Helgaas 5468d5a64b Merge branch 'pci/misc' into next 
* pci/misc:
  PCI: Read capability list as dwords, not bytes
  PCI: Don't clear ASPM bits when the FADT declares it's unsupported
  PCI: Clarify policy for vendor IDs in pci.txt
  PCI/ACPI: Optimize device state transition delays
  PCI: Export pci_find_host_bridge() for use inside PCI core
  PCI: Make a shareable UUID for PCI firmware ACPI _DSM
  PCI: Fix typo in Thunderbolt kernel message
 2015-04-10 08:27:18 -05:00
Greg Kroah-Hartman 2aebe3f3b2 New Features 
============
 *) Add driver for USB PHYs on sun9i
 *) Add driver for USB PHY on dm816x
 *) Modified exynos5-usbdrd driver to add support for Exynos5433 SoC
 
 Fixes
 =====
 *) Fix power_on/power_off failure paths in some drivers
 *) Make miphy365x use generic PHY type constants
 *) Fix build errors due to missing export symbols in qcom-ufs driver
 *) Make all the functions return proper error values
 
 Cleanups
 ========
 *) use PTR_ERR_OR_ZERO to simplify code
 *) use devm_kcalloc instead of devm_kzalloc with multiply
 *) remove un-necessary ifdef CONFIG_OF
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Merge tag 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-next

Kishon writes:

New Features
============
*) Add driver for USB PHYs on sun9i
*) Add driver for USB PHY on dm816x
*) Modified exynos5-usbdrd driver to add support for Exynos5433 SoC

Fixes
=====
*) Fix power_on/power_off failure paths in some drivers
*) Make miphy365x use generic PHY type constants
*) Fix build errors due to missing export symbols in qcom-ufs driver
*) Make all the functions return proper error values

Cleanups
========
*) use PTR_ERR_OR_ZERO to simplify code
*) use devm_kcalloc instead of devm_kzalloc with multiply
*) remove un-necessary ifdef CONFIG_OF
 2015-04-10 13:47:50 +02:00
Greg Kroah-Hartman c8d1bc12c7 usb: generic resume timeout for v4.1 
This part 2 pull request contains only the patches
 which make sure everybody on linux uses the same
 resume timeout value.
 
 Signed-off-by: Felipe Balbi <balbi@ti.com>
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Merge tag 'usb-for-v4.1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-testing

Felipe writes:

usb: generic resume timeout for v4.1

This part 2 pull request contains only the patches
which make sure everybody on linux uses the same
resume timeout value.

Signed-off-by: Felipe Balbi <balbi@ti.com>
 2015-04-10 13:45:27 +02:00
Linus Torvalds e5e02de066 Power management and ACPI fixes for v4.0-rc8 
- Revert a 3.17 hibernate commit that was supposed to fix an issue
    related to e820 reserved regions, but broke resume from hibernation
    on Lenovo x230 (Rafael J Wysocki).
 
  - Prevent the ACPI cpuidle driver from overwriting the name and
    description of the C0 state set by the core when the list of
    C-states changes (Thomas Schlichter).
 
  - Remove the no longer needed state_count field from struct cpuidle_device
    which prevents the list of C-states shown by the sysfs interface from
    becoming incorrect when the current number of them is different from
    the number of C-states on boot (Bartlomiej Zolnierkiewicz).
 
  - The cpufreq core updates the policy object of the only online CPU
    during system resume to make it reflect the current hardware state,
    but it always assumes that CPU to be CPU0 which need not be the
    case, so fix the code to avoid that assumption (Viresh Kumar).
 
 /
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Merge tag 'pm+acpi-4.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI fixes from Rafael Wysocki:
 "These are stable-candidate fixes of some recently reported issues in
  the cpufreq core, cpuidle core, the ACPI cpuidle driver and the
  hibernate core.

  Specifics:

   - Revert a 3.17 hibernate commit that was supposed to fix an issue
     related to e820 reserved regions, but broke resume from hibernation
     on Lenovo x230 (Rafael J Wysocki).

   - Prevent the ACPI cpuidle driver from overwriting the name and
     description of the C0 state set by the core when the list of
     C-states changes (Thomas Schlichter).

   - Remove the no longer needed state_count field from struct
     cpuidle_device which prevents the list of C-states shown by the
     sysfs interface from becoming incorrect when the current number of
     them is different from the number of C-states on boot (Bartlomiej
     Zolnierkiewicz).

   - The cpufreq core updates the policy object of the only online CPU
     during system resume to make it reflect the current hardware state,
     but it always assumes that CPU to be CPU0 which need not be the
     case, so fix the code to avoid that assumption (Viresh Kumar)"

* tag 'pm+acpi-4.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  Revert "PM / hibernate: avoid unsafe pages in e820 reserved regions"
  cpuidle: ACPI: do not overwrite name and description of C0
  cpuidle: remove state_count field from struct cpuidle_device
  cpufreq: Schedule work for the first-online CPU on resume
 2015-04-09 17:44:27 -07:00
Rafael J. Wysocki b2d5fb97d3 Merge branches 'pm-sleep', 'pm-cpufreq' and 'pm-cpuidle' 
* pm-sleep:
  Revert "PM / hibernate: avoid unsafe pages in e820 reserved regions"

* pm-cpufreq:
  cpufreq: Schedule work for the first-online CPU on resume

* pm-cpuidle:
  cpuidle: ACPI: do not overwrite name and description of C0
  cpuidle: remove state_count field from struct cpuidle_device
 2015-04-09 23:25:23 +02:00