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Linus Torvalds
6b5f04b6cf Merge branch 'for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 
Pull cgroup updates from Tejun Heo:
 "cgroup changes for v4.6-rc1.  No userland visible behavior changes in
  this pull request.  I'll send out a separate pull request for the
  addition of cgroup namespace support.

   - The biggest change is the revamping of cgroup core task migration
     and controller handling logic.  There are quite a few places where
     controllers and tasks are manipulated.  Previously, many of those
     places implemented custom operations for each specific use case
     assuming specific starting conditions.  While this worked, it makes
     the code fragile and difficult to follow.

     The bulk of this pull request restructures these operations so that
     most related operations are performed through common helpers which
     implement recursive (subtrees are always processed consistently)
     and idempotent (they make cgroup hierarchy converge to the target
     state rather than performing operations assuming specific starting
     conditions).  This makes the code a lot easier to understand,
     verify and extend.

   - Implicit controller support is added.  This is primarily for using
     perf_event on the v2 hierarchy so that perf can match cgroup v2
     path without requiring the user to do anything special.  The kernel
     portion of perf_event changes is acked but userland changes are
     still pending review.

   - cgroup_no_v1= boot parameter added to ease testing cgroup v2 in
     certain environments.

   - There is a regression introduced during v4.4 devel cycle where
     attempts to migrate zombie tasks can mess up internal object
     management.  This was fixed earlier this week and included in this
     pull request w/ stable cc'd.

   - Misc non-critical fixes and improvements"

* 'for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (44 commits)
  cgroup: avoid false positive gcc-6 warning
  cgroup: ignore css_sets associated with dead cgroups during migration
  Documentation: cgroup v2: Trivial heading correction.
  cgroup: implement cgroup_subsys->implicit_on_dfl
  cgroup: use css_set->mg_dst_cgrp for the migration target cgroup
  cgroup: make cgroup[_taskset]_migrate() take cgroup_root instead of cgroup
  cgroup: move migration destination verification out of cgroup_migrate_prepare_dst()
  cgroup: fix incorrect destination cgroup in cgroup_update_dfl_csses()
  cgroup: Trivial correction to reflect controller.
  cgroup: remove stale item in cgroup-v1 document INDEX file.
  cgroup: update css iteration in cgroup_update_dfl_csses()
  cgroup: allocate 2x cgrp_cset_links when setting up a new root
  cgroup: make cgroup_calc_subtree_ss_mask() take @this_ss_mask
  cgroup: reimplement rebind_subsystems() using cgroup_apply_control() and friends
  cgroup: use cgroup_apply_enable_control() in cgroup creation path
  cgroup: combine cgroup_mutex locking and offline css draining
  cgroup: factor out cgroup_{apply|finalize}_control() from cgroup_subtree_control_write()
  cgroup: introduce cgroup_{save|propagate|restore}_control()
  cgroup: make cgroup_drain_offline() and cgroup_apply_control_{disable|enable}() recursive
  cgroup: factor out cgroup_apply_control_enable() from cgroup_subtree_control_write()
  ...
 2016-03-18 20:25:49 -07:00
Linus Torvalds
fcab86add7 Merge branch 'for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 
Pull libata updates from Tejun Heo:

 - ahci grew runtime power management support so that the controller can
   be turned off if no devices are attached.

 - sata_via isn't dead yet.  It got hotplug support and more refined
   workaround for certain WD drives.

 - Misc cleanups.  There's a merge from for-4.5-fixes to avoid confusing
   conflicts in ahci PCI ID table.

* 'for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  ata: ahci_xgene: dereferencing uninitialized pointer in probe
  AHCI: Remove obsolete Intel Lewisburg SATA RAID device IDs
  ata: sata_rcar: Use ARCH_RENESAS
  sata_via: Implement hotplug for VT6421
  sata_via: Apply WD workaround only when needed on VT6421
  ahci: Add runtime PM support for the host controller
  ahci: Add functions to manage runtime PM of AHCI ports
  ahci: Convert driver to use modern PM hooks
  ahci: Cache host controller version
  scsi: Drop runtime PM usage count after host is added
  scsi: Set request queue runtime PM status back to active on resume
  block: Add blk_set_runtime_active()
  ata: ahci_mvebu: add support for Armada 3700 variant
  libata: fix unbalanced spin_lock_irqsave/spin_unlock_irq() in ata_scsi_park_show()
  libata: support AHCI on OCTEON platform
 2016-03-18 20:06:46 -07:00
Linus Torvalds
ef504fa591 Merge branch 'for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 
Pull workqueue updates from Tejun Heo:
 "Three trivial workqueue changes"

* 'for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: Fix comment for work_on_cpu()
  sched/core: Get rid of 'cpu' argument in wq_worker_sleeping()
  workqueue: Replace usage of init_name with dev_set_name()
 2016-03-18 20:05:39 -07:00
Linus Torvalds
814a2bf957 Merge branch 'akpm' (patches from Andrew) 
Merge second patch-bomb from Andrew Morton:

 - a couple of hotfixes

 - the rest of MM

 - a new timer slack control in procfs

 - a couple of procfs fixes

 - a few misc things

 - some printk tweaks

 - lib/ updates, notably to radix-tree.

 - add my and Nick Piggin's old userspace radix-tree test harness to
   tools/testing/radix-tree/.  Matthew said it was a godsend during the
   radix-tree work he did.

 - a few code-size improvements, switching to __always_inline where gcc
   screwed up.

 - partially implement character sets in sscanf

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits)
  sscanf: implement basic character sets
  lib/bug.c: use common WARN helper
  param: convert some "on"/"off" users to strtobool
  lib: add "on"/"off" support to kstrtobool
  lib: update single-char callers of strtobool()
  lib: move strtobool() to kstrtobool()
  include/linux/unaligned: force inlining of byteswap operations
  include/uapi/linux/byteorder, swab: force inlining of some byteswap operations
  include/asm-generic/atomic-long.h: force inlining of some atomic_long operations
  usb: common: convert to use match_string() helper
  ide: hpt366: convert to use match_string() helper
  ata: hpt366: convert to use match_string() helper
  power: ab8500: convert to use match_string() helper
  power: charger_manager: convert to use match_string() helper
  drm/edid: convert to use match_string() helper
  pinctrl: convert to use match_string() helper
  device property: convert to use match_string() helper
  lib/string: introduce match_string() helper
  radix-tree tests: add test for radix_tree_iter_next
  radix-tree tests: add regression3 test
  ...
 2016-03-18 19:26:54 -07:00
Linus Torvalds
237045fc3c Merge branch 'for-4.6/drivers' of git://git.kernel.dk/linux-block 
Pull block driver updates from Jens Axboe:
 "This is the block driver pull request for this merge window.  It sits
  on top of for-4.6/core, that was just sent out.

  This contains:

   - A set of fixes for lightnvm.  One from Alan, fixing an overflow,
     and the rest from the usual suspects, Javier and Matias.

   - A set of fixes for nbd from Markus and Dan, and a fixup from Arnd
     for correct usage of the signed 64-bit divider.

   - A set of bug fixes for the Micron mtip32xx, from Asai.

   - A fix for the brd discard handling from Bart.

   - Update the maintainers entry for cciss, since that hardware has
     transferred ownership.

   - Three bug fixes for bcache from Eric Wheeler.

   - Set of fixes for xen-blk{back,front} from Jan and Konrad.

   - Removal of the cpqarray driver.  It has been disabled in Kconfig
     since 2013, and we were initially scheduled to remove it in 3.15.

   - Various updates and fixes for NVMe, with the most important being:

        - Removal of the per-device NVMe thread, replacing that with a
          watchdog timer instead. From Christoph.

        - Exposing the namespace WWID through sysfs, from Keith.

        - Set of cleanups from Ming Lin.

        - Logging the controller device name instead of the underlying
          PCI device name, from Sagi.

        - And a bunch of fixes and optimizations from the usual suspects
          in this area"

* 'for-4.6/drivers' of git://git.kernel.dk/linux-block: (49 commits)
  NVMe: Expose ns wwid through single sysfs entry
  drivers:block: cpqarray clean up
  brd: Fix discard request processing
  cpqarray: remove it from the kernel
  cciss: update MAINTAINERS
  NVMe: Remove unused sq_head read in completion path
  bcache: fix cache_set_flush() NULL pointer dereference on OOM
  bcache: cleaned up error handling around register_cache()
  bcache: fix race of writeback thread starting before complete initialization
  NVMe: Create discard zero quirk white list
  nbd: use correct div_s64 helper
  mtip32xx: remove unneeded variable in mtip_cmd_timeout()
  lightnvm: generalize rrpc ppa calculations
  lightnvm: remove struct nvm_dev->total_blocks
  lightnvm: rename ->nr_pages to ->nr_sects
  lightnvm: update closed list outside of intr context
  xen/blback: Fit the important information of the thread in 17 characters
  lightnvm: fold get bb tbl when using dual/quad plane mode
  lightnvm: fix up nonsensical configure overrun checking
  xen-blkback: advertise indirect segment support earlier
  ...
 2016-03-18 17:13:31 -07:00
Linus Torvalds
35d88d97be Merge branch 'for-4.6/core' of git://git.kernel.dk/linux-block 
Pull core block updates from Jens Axboe:
 "Here are the core block changes for this merge window.  Not a lot of
  exciting stuff going on in this round, most of the changes have been
  on the driver side of things.  That pull request is coming next.  This
  pull request contains:

   - A set of fixes for chained bio handling from Christoph.

   - A tag bounds check for blk-mq from Hannes, ensuring that we don't
     do something stupid if a device reports an invalid tag value.

   - A set of fixes/updates for the CFQ IO scheduler from Jan Kara.

   - A set of blk-mq fixes from Keith, adding support for dynamic
     hardware queues, and fixing init of max_dev_sectors for stacking
     devices.

   - A fix for the dynamic hw context from Ming.

   - Enabling of cgroup writeback support on a block device, from
     Shaohua"

* 'for-4.6/core' of git://git.kernel.dk/linux-block:
  blk-mq: add bounds check on tag-to-rq conversion
  block: bio_remaining_done() isn't unlikely
  block: cleanup bio_endio
  block: factor out chained bio completion
  block: don't unecessarily clobber bi_error for chained bios
  block-dev: enable writeback cgroup support
  blk-mq: Fix NULL pointer updating nr_requests
  blk-mq: mark request queue as mq asap
  block: Initialize max_dev_sectors to 0
  blk-mq: dynamic h/w context count
  cfq-iosched: Allow parent cgroup to preempt its child
  cfq-iosched: Allow sync noidle workloads to preempt each other
  cfq-iosched: Reorder checks in cfq_should_preempt()
  cfq-iosched: Don't group_idle if cfqq has big thinktime
 2016-03-18 16:43:11 -07:00
Linus Torvalds
040e3abbb9 USB fixes for 4.6-rc1 
Here is a USB fix for the reported issue with 69bec72598 "USB: core:
 let USB device know device node" as well as some other issues that have
 been reported so far with this merge.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here is a USB fix for the reported issue with commit 69bec72598
  ("USB: core: let USB device know device node") as well as some other
  issues that have been reported so far with this merge window"

* tag 'usb-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: uas: Reduce can_queue to MAX_CMNDS
  USB: cdc-acm: more sanity checking
  USB: usb_driver_claim_interface: add sanity checking
  usb/core: usb_alloc_dev(): fix setting of ->portnum
  USB: iowarrior: fix oops with malicious USB descriptors
 2016-03-18 16:19:15 -07:00
Linus Torvalds
f7813ad5cb Just some minor fixes, nothing big. 
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Merge tag 'for-linus-4.6' of git://git.code.sf.net/p/openipmi/linux-ipmi

Pull IPMI updates from Corey Minyard:
 "Just some minor fixes, nothing big"

* tag 'for-linus-4.6' of git://git.code.sf.net/p/openipmi/linux-ipmi:
  ipmi: do not probe ACPI devices if si_tryacpi is unset
  ipmi_si: Avoid a wrong long timeout on transaction done
  ipmi_si: Fix module parameter doc names
  ipmi_ssif: Fix logic around alert handling
 2016-03-18 10:21:04 -07:00
Linus Torvalds
12e7b0a627 - New Drivers 
- Freescale Touch Screen ADC
    - X-Powers AXP PMIC with RSB
    - TI TPS65086 Power Management IC (PMIC)
  - New Device Support
    - Supply device PCI IDs for Intel Broxton
  - Fix-ups
    - Move to clkdev_create() API; intel_quark_i2c_gpio
    - Complete re-write of TI's TPS65912 Power Management IC (PMIC)
    - Remove unnecessary function argument; axp20x
    - Separate out bus related code; axp20x
    - Coding Style changes; axp20x
    - Allow more drivers to be compiled as modules
    - Work around false positive 'used uninitialised' warning; db8500-prcmu
  - Bug Fixes
    - Remove do_div(); fsl-imx25-gcq
    - Fix driver init when built-in; tps65010
    - Fix clock-unregister leak; intel-lpss
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Merge tag 'mfd-for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "New Drivers:
   - Freescale Touch Screen ADC
   - X-Powers AXP PMIC with RSB
   - TI TPS65086 Power Management IC (PMIC)

  New Device Support:
   - Supply device PCI IDs for Intel Broxton

  Fix-ups:
   - Move to clkdev_create() API; intel_quark_i2c_gpio
   - Complete re-write of TI's TPS65912 Power Management IC (PMIC)
   - Remove unnecessary function argument; axp20x
   - Separate out bus related code; axp20x
   - Coding Style changes; axp20x
   - Allow more drivers to be compiled as modules
   - Work around false positive 'used uninitialised' warning; db8500-prcmu

  Bug Fixes:
   - Remove do_div(); fsl-imx25-gcq
   - Fix driver init when built-in; tps65010
   - Fix clock-unregister leak; intel-lpss"

* tag 'mfd-for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (53 commits)
  mfd: intel-lpss: Pass I2C configuration via properties on BXT
  mfd: imx6sx: Add PCIe register definitions for iomuxc gpr
  mfd: ipaq-micro: Use __maybe_unused to hide pm functions
  mfd: max77686: Add max77802 to I2C device ID table
  mfd: max77686: Export OF module alias information
  mfd: max77686: Allow driver to be built as a module
  mfd: stmpe: Add the proper PWM resources
  mfd: tps65090: Set regmap config reg counts properly
  mfd: syscon: Return ENOTSUPP instead of ENOSYS when disabled
  mfd: as3711: Set regmap config reg counts properly
  mfd: rc5t583: Set regmap config reg counts properly
  gpio: tps65086: Add GPO driver for the TPS65086 PMIC
  mfd: mt6397: Add platform device ID table
  mfd: da9063: Fix missing volatile registers in the core regmap_range volatile lists
  mfd: mt6397: Add MT6323 support to MT6397 driver
  mfd: mt6397: Add support for different Slave types
  mfd: mt6397: int_con and int_status may vary in location
  dt-bindings: mfd: Add bindings for the MediaTek MT6323 PMIC
  mfd: da9062: Fix missing volatile registers in the core regmap_range volatile lists
  mfd: Add documentation for ACT8945A DT bindings
  ...
 2016-03-18 10:15:11 -07:00
Linus Torvalds
021f163d69 sound updates for 4.6-rc1 
After a heavy storm by syzkaller in 4.5 cycle, we have relatively few
 changes in the core at this time while a lot of changes are found in
 the driver side, unsurprisingly.  Below are some highlights:
 
 ALSA core:
 - A few more hardening in ALSA timer codes
 - An extension of sequencer API for advertising the card / pid
 - Small fixes in compress-offload and jack layers
 
 HD-audio:
 - Dynamic PCM assignment in HDMI/DP codec; preparation for upcoming
   DP-MST support
 - Lots of code refactoring for sharing with ASoC SKL driver
 - Regression fixes for Intel HDMI/DP
 - Fixups for CX20724 codec, Lenovo AiO
 
 USB-audio:
 - Add quirk_alias option to make quirk debugging easier
 - Fixes for possible Oops by malformed firmware
 
 Firewire:
 - Add support for FW-1804 in tascam driver
 - Improvements / changes in card registration, multi stream handling,
   etc for DICE
 - Lots of code refactoring
 
 ASoC:
 - Enhancements of still ongoing topology API
 - Lots of commits for Intel Skylake support including HDMI support
 - A few Intel Atom driver updates for recent devices
 - Lots of improvements to the Renesas drivers
 - Capture support for Qualcomm drivers
 - Support for TI DaVinci DRA7xxx devices
 - New machine drivers for Freescale systems with Cirrus CODECs,
   Mediatek systems with RT5650 CODECs
 - New CPU drivers for Allwinner S/PDIF controllers
 - New CODEC drivers for Maxim MAX9867 and MAX98926 and Realtek RT5514
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Merge tag 'sound-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "After a heavy storm by syzkaller in 4.5 cycle, we have relatively few
  changes in the core at this time while a lot of changes are found in
  the driver side, unsurprisingly.  Below are some highlights:

  ALSA core:
   - A few more hardening in ALSA timer codes
   - An extension of sequencer API for advertising the card / pid
   - Small fixes in compress-offload and jack layers

  HD-audio:
   - Dynamic PCM assignment in HDMI/DP codec; preparation for upcoming
     DP-MST support
   - Lots of code refactoring for sharing with ASoC SKL driver
   - Regression fixes for Intel HDMI/DP
   - Fixups for CX20724 codec, Lenovo AiO

  USB-audio:
   - Add quirk_alias option to make quirk debugging easier
   - Fixes for possible Oops by malformed firmware

  Firewire:
   - Add support for FW-1804 in tascam driver
   - Improvements / changes in card registration, multi stream handling,
     etc for DICE
   - Lots of code refactoring

  ASoC:
   - Enhancements of still ongoing topology API
   - Lots of commits for Intel Skylake support including HDMI support
   - A few Intel Atom driver updates for recent devices
   - Lots of improvements to the Renesas drivers
   - Capture support for Qualcomm drivers
   - Support for TI DaVinci DRA7xxx devices
   - New machine drivers for Freescale systems with Cirrus CODECs,
     Mediatek systems with RT5650 CODECs
   - New CPU drivers for Allwinner S/PDIF controllers
   - New CODEC drivers for Maxim MAX9867 and MAX98926 and Realtek RT5514"

* tag 'sound-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (291 commits)
  ALSA: hda - Fix mutex deadlock at HDMI/DP hotplug
  ALSA: ctl: change return value in compatibility layer so that it's the same value in core implementation
  ALSA: mixart: silence an uninitialized variable warning
  ALSA: usb-audio: Add sanity checks for endpoint accesses
  ALSA: usb-audio: Minor code cleanup in create_fixed_stream_quirk()
  ALSA: usb-audio: Fix NULL dereference in create_fixed_stream_quirk()
  ALSA: hda - Limit i915 HDMI binding only for HSW and later
  ALSA: hda - Fix unconditional GPIO toggle via automute
  ALSA: mixart: silence unitialized variable warnings
  ALSA: hda - Fixes double fault in nvhdmi_chmap_cea_alloc_validate_get_type
  ALSA: intel8x0: Add clock quirk entry for AD1981B on IBM ThinkPad X41.
  ALSA: hda - Add new GPU codec ID 0x10de0082 to snd-hda
  ASoC: rsnd: add simplified module explanation
  ASoC: hdac_hdmi: Add broxton device ID
  ASoC: Intel: Bxtn: Add Broxton PCI ID
  ASoC: Intel: Skylake: Move Skylake dsp ops & loader ops
  ASoC: Intel: add dmabuffer to common sst_dsp
  ASoC: Intel: Skylake: Unstatify skl_dsp_enable_core
  ASoC: Intel: Skylake: Fix whitepsace issues
  ASoC: Intel: Skylake: Move module id defines
  ...
 2016-03-18 10:05:46 -07:00
Linus Torvalds
9ea4463520 Initial roundup of 4.6 merge window patches 
- cxgb4 updates
 - nes updates
 - unification of iwarp portmapper code to core
 - add drain_cq API
 - various ib_core updates
 - minor ipoib updates
 - minor mlx4 updates
 - more significant mlx5 updates (including a minor merge conflict with
   net-next tree...merge is simple to resolve and Stephen's resolution was
   confirmed by Mellanox)
 - trivial net/9p rdma conversion
 - ocrdma RoCEv2 update
 - srpt updates
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull rdma updates from Doug Ledford:
 "Initial roundup of 4.6 merge window patches.

  This is the first of two pull requests.  It is the smaller request,
  but touches for more different things (this is everything but what is
  in or going into staging).  The pull request for the code in
  staging/rdma is on hold until after we decide what to do on the
  write/writev API issue and may be partially deferred until 4.7 as a
  result.

  Summary:

   - cxgb4 updates
   - nes updates
   - unification of iwarp portmapper code to core
   - add drain_cq API
   - various ib_core updates
   - minor ipoib updates
   - minor mlx4 updates
   - more significant mlx5 updates (including a minor merge conflict
     with net-next tree...merge is simple to resolve and Stephen's
     resolution was confirmed by Mellanox)
   - trivial net/9p rdma conversion
   - ocrdma RoCEv2 update
   - srpt updates"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (85 commits)
  iwpm: crash fix for large connections test
  iw_cxgb3: support for iWARP port mapping
  iw_cxgb4: remove port mapper related code
  iw_nes: remove port mapper related code
  iwcm: common code for port mapper
  net/9p: convert to new CQ API
  IB/mlx5: Add support for don't trap rules
  net/mlx5_core: Introduce forward to next priority action
  net/mlx5_core: Create anchor of last flow table
  iser: Accept arbitrary sg lists mapping if the device supports it
  mlx5: Add arbitrary sg list support
  IB/core: Add arbitrary sg_list support
  IB/mlx5: Expose correct max_fast_reg_page_list_len
  IB/mlx5: Make coding style more consistent
  IB/mlx5: Convert UMR CQ to new CQ API
  IB/ocrdma: Skip using unneeded intermediate variable
  IB/ocrdma: Skip using unneeded intermediate variable
  IB/ocrdma: Delete unnecessary variable initialisations in 11 functions
  IB/core: Documentation fix in the MAD header file
  IB/core: trivial prink cleanup.
  ...
 2016-03-18 09:39:22 -07:00
Hans de Goede
55ff8cfbc4 USB: uas: Reduce can_queue to MAX_CMNDS 
The uas driver can never queue more then MAX_CMNDS (- 1) tags and tags
are shared between luns, so there is no need to claim that we can_queue
some random large number.

Not claiming that we can_queue 65536 commands, fixes the uas driver
failing to initialize while allocating the tag map with a "Page allocation
failure (order 7)" error on systems which have been running for a while
and thus have fragmented memory.

Cc: stable@vger.kernel.org
Reported-and-tested-by: Yves-Alexis Perez <corsac@corsac.net>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2016-03-18 09:19:02 -07:00
Oliver Neukum
8835ba4a39 USB: cdc-acm: more sanity checking 
An attack has become available which pretends to be a quirky
device circumventing normal sanity checks and crashes the kernel
by an insufficient number of interfaces. This patch adds a check
to the code path for quirky devices.

Signed-off-by: Oliver Neukum <ONeukum@suse.com>
CC: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2016-03-18 09:19:02 -07:00
Oliver Neukum
0b818e3956 USB: usb_driver_claim_interface: add sanity checking 
Attacks that trick drivers into passing a NULL pointer
to usb_driver_claim_interface() using forged descriptors are
known. This thwarts them by sanity checking.

Signed-off-by: Oliver Neukum <ONeukum@suse.com>
CC: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2016-03-18 09:19:02 -07:00
Nicolai Stange
7222c83225 usb/core: usb_alloc_dev(): fix setting of ->portnum 
With commit 69bec72598 ("USB: core: let USB device know device node"),
the port1 argument of usb_alloc_dev() gets overwritten as follows:

  ... usb_alloc_dev(..., unsigned port1)
  {
    ...
    if (!parent->parent) {
      port1 = usb_hcd_find_raw_port_number(..., port1);
    }
    ...
  }

Later on, this now overwritten port1 gets assigned to ->portnum:

  dev->portnum = port1;

However, since xhci_find_raw_port_number() isn't idempotent, the
aforementioned commit causes a number of KASAN splats like the following:

  BUG: KASAN: slab-out-of-bounds in xhci_find_raw_port_number+0x98/0x170
                                       at addr ffff8801d9311670
  Read of size 8 by task kworker/2:1/87
  [...]
  Workqueue: usb_hub_wq hub_event
   0000000000000188 000000005814b877 ffff8800cba17588 ffffffff8191447e
   0000000041b58ab3 ffffffff82a03209 ffffffff819143a2 ffffffff82a252f4
   ffff8801d93115e0 0000000000000188 ffff8801d9311628 ffff8800cba17588
  Call Trace:
   [<ffffffff8191447e>] dump_stack+0xdc/0x15e
   [<ffffffff819143a2>] ? _atomic_dec_and_lock+0xa2/0xa2
   [<ffffffff814e2cd1>] ? print_section+0x61/0xb0
   [<ffffffff814e4939>] print_trailer+0x179/0x2c0
   [<ffffffff814f0d84>] object_err+0x34/0x40
   [<ffffffff814f4388>] kasan_report_error+0x2f8/0x8b0
   [<ffffffff814eb91e>] ? __slab_alloc+0x5e/0x90
   [<ffffffff812178c0>] ? __lock_is_held+0x90/0x130
   [<ffffffff814f5091>] kasan_report+0x71/0xa0
   [<ffffffff814ec082>] ? kmem_cache_alloc_trace+0x212/0x560
   [<ffffffff81d99468>] ? xhci_find_raw_port_number+0x98/0x170
   [<ffffffff814f33d4>] __asan_load8+0x64/0x70
   [<ffffffff81d99468>] xhci_find_raw_port_number+0x98/0x170
   [<ffffffff81db0105>] xhci_setup_addressable_virt_dev+0x235/0xa10
   [<ffffffff81d9ea51>] xhci_setup_device+0x3c1/0x1430
   [<ffffffff8121cddd>] ? trace_hardirqs_on+0xd/0x10
   [<ffffffff81d9fac0>] ? xhci_setup_device+0x1430/0x1430
   [<ffffffff81d9fad3>] xhci_address_device+0x13/0x20
   [<ffffffff81d2081a>] hub_port_init+0x55a/0x1550
   [<ffffffff81d28705>] hub_event+0xef5/0x24d0
   [<ffffffff81d27810>] ? hub_port_debounce+0x2f0/0x2f0
   [<ffffffff8195e1ee>] ? debug_object_deactivate+0x1be/0x270
   [<ffffffff81210203>] ? print_rt_rq+0x53/0x2d0
   [<ffffffff8121657d>] ? trace_hardirqs_off+0xd/0x10
   [<ffffffff8226acfb>] ? _raw_spin_unlock_irqrestore+0x5b/0x60
   [<ffffffff81250000>] ? irq_domain_set_hwirq_and_chip+0x30/0xb0
   [<ffffffff81256339>] ? debug_lockdep_rcu_enabled+0x39/0x40
   [<ffffffff812178c0>] ? __lock_is_held+0x90/0x130
   [<ffffffff81196877>] process_one_work+0x567/0xec0
  [...]

Afterwards, xhci reports some functional errors:

  xhci_hcd 0000:00:14.0: ERROR: unexpected setup address command completion
                                code 0x11.
  xhci_hcd 0000:00:14.0: ERROR: unexpected setup address command completion
                                code 0x11.
  usb 4-3: device not accepting address 2, error -22

Fix this by not overwriting the port1 argument in usb_alloc_dev(), but
storing the raw port number as required by OF in an additional variable,
raw_port.

Fixes: 69bec72598 ("USB: core: let USB device know device node")
Signed-off-by: Nicolai Stange <nicstange@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2016-03-18 09:19:02 -07:00
Josh Boyer
4ec0ef3a82 USB: iowarrior: fix oops with malicious USB descriptors 
The iowarrior driver expects at least one valid endpoint.  If given
malicious descriptors that specify 0 for the number of endpoints,
it will crash in the probe function.  Ensure there is at least
one endpoint on the interface before using it.

The full report of this issue can be found here:
http://seclists.org/bugtraq/2016/Mar/87

Reported-by: Ralf Spenneberg <ralf@spenneberg.net>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2016-03-18 09:19:02 -07:00
Joe Lawrence
9f0257b39c ipmi: do not probe ACPI devices if si_tryacpi is unset 
Extend the tryacpi module parameter to turn off acpi_ipmi_probe such
that hard-coded options (type, ports, address, etc.) have complete
control over the smi_info data structures setup by the driver.

Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
 2016-03-18 07:01:24 -05:00
Corey Minyard
d9dffd2a0b ipmi_si: Avoid a wrong long timeout on transaction done 
Under some circumstances, the IPMI state machine could return
a call without delay option but the driver would still do a long
delay because the result wasn't checked.  Instead of calling
the state machine after transaction done, just go back to the
top of the processing to start over.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
 2016-03-18 07:01:23 -05:00
Corey Minyard
f813655a36 ipmi_si: Fix module parameter doc names 
Several were tryacpi instead of their actual values.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
 2016-03-18 07:01:23 -05:00
Corey Minyard
21c8f9154d ipmi_ssif: Fix logic around alert handling 
There was a mistake in the logic, if an alert came in very quickly
it would hang the driver.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
 2016-03-18 07:01:23 -05:00
Linus Torvalds
9dffdb38d8 Staging driver patches for 4.6-rc1 
Here is the big staging driver pull request for 4.6-rc1.
 
 Lots of little things here, over 1600 patches or so.  Notible is all of
 the good Lustre work happening, those developers have finally woken up
 and are cleaning up their code greatly.  The Outreachy intern
 application process is also happening, which brought in another 400 or
 so patches.  Full details are in the very long shortlog.
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver updates from Greg KH:
 "Here is the big staging driver pull request for 4.6-rc1.

  Lots of little things here, over 1600 patches or so.  Notable is all
  of the good Lustre work happening, those developers have finally woken
  up and are cleaning up their code greatly.  The Outreachy intern
  application process is also happening, which brought in another 400 or
  so patches.  Full details are in the very long shortlog.

  All of these have been in linux-next with no reported issues"

* tag 'staging-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1673 commits)
  staging: lustre: fix aligments in lnet selftest
  staging: lustre: report minimum of two buffers for LNet selftest load test
  staging: lustre: test for proper errno code in lstcon_rpc_trans_abort
  staging: lustre: filter remaining extra spacing for lnet selftest
  staging: lustre: remove extra spacing when setting variable for lnet selftest
  staging: lustre: remove extra spacing of variable declartions for lnet selftest
  staging: lustre: fix spacing issues checkpatch reported in lnet selftest
  staging: lustre: remove returns in void function for lnet selftest
  staging: lustre: fix bogus lst errors for lnet selftest
  staging: netlogic: Replacing pr_err with dev_err after the call to devm_kzalloc
  staging: mt29f_spinand: Replacing pr_info with dev_info after the call to devm_kzalloc
  staging: android: ion: fix up file mode
  staging: ion: debugfs invalid gfp mask
  staging: rts5208: Replace pci_enable_device with pcim_enable_device
  Staging: ieee80211: Place constant on right side of the test.
  staging: speakup: Replace del_timer with del_timer_sync
  staging: lowmemorykiller: fix 2 checks that checkpatch complained
  staging: mt29f_spinand: Drop void pointer cast
  staging: rdma: hfi1: file_ops: Replace ALIGN with PAGE_ALIGN
  staging: rdma: hfi1: driver: Replace IS_ALIGNED with PAGE_ALIGNED
  ...
 2016-03-17 22:13:41 -07:00
Linus Torvalds
10fdfee7f7 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 
Pull input updates from Dmitry Torokhov:
 "The most notable item is addition of support for Synaptics RMI4
  protocol which is native protocol for all current Synaptics devices
  (touchscreens, touchpads).  In later releases we'll switch devices
  using HID and PS/2 protocol emulation to RMI4.

  You will also get:
   - BYD PS/2 touchpad protocol support for psmouse
   - MELFAS MIP4 Touchscreen driver
   - rotary encoder was moved away from legacy platform data and to
     generic device properties API, devm_* API, and can now handle
     encoders using more than 2 GPIOs
   - Cypress touchpad driver was switched to devm_* API and device
     properties
   - other assorted driver fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (40 commits)
  ARM: pxa/raumfeld: use PROPERTY_ENTRY_INTEGER to define props
  Input: synaptics-rmi4 - using logical instead of bitwise AND
  Input: powermate - fix oops with malicious USB descriptors
  Input: snvs_pwrkey - fix returned value check of syscon_regmap_lookup_by_phandle()
  MAINTAINERS: add devicetree bindings to Input Drivers section
  Input: synaptics-rmi4 - add device tree support to the SPI transport driver
  Input: synaptics-rmi4 - add SPI transport driver
  Input: synaptics-rmi4 - add support for F30
  Input: synaptics-rmi4 - add support for F12
  Input: synaptics-rmi4 - add device tree support for 2d sensors and F11
  Input: synaptics-rmi4 - add support for 2D sensors and F11
  Input: synaptics-rmi4 - add device tree support for RMI4 I2C devices
  Input: synaptics-rmi4 - add I2C transport driver
  Input: synaptics-rmi4 - add support for Synaptics RMI4 devices
  Input: ad7879 - add device tree support
  Input: ad7879 - fix default x/y axis assignment
  Input: ad7879 - move header to platform_data directory
  Input: ts4800 - add hardware dependency
  Input: cyapa - fix for losing events during device power transitions
  Input: sh_keysc - remove dependency on SUPERH
  ...
 2016-03-17 21:51:52 -07:00
Linus Torvalds
0f49fc95b8 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching 
Pull livepatching update from Jiri Kosina:

 - cleanup of module notifiers; this depends on a module.c cleanup which
   has been acked by Rusty; from Jessica Yu

 - small assorted fixes and MAINTAINERS update

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
  livepatch/module: remove livepatch module notifier
  modules: split part of complete_formation() into prepare_coming_module()
  livepatch: Update maintainers
  livepatch: Fix the error message about unresolvable ambiguity
  klp: remove CONFIG_LIVEPATCH dependency from klp headers
  klp: remove superfluous errors in asm/livepatch.h
 2016-03-17 21:46:32 -07:00
Linus Torvalds
49dc2b7173 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 
Pull trivial tree updates from Jiri Kosina.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial:
  drivers/rtc: broken link fix
  drm/i915 Fix typos in i915_gem_fence.c
  Docs: fix missing word in REPORTING-BUGS
  lib+mm: fix few spelling mistakes
  MAINTAINERS: add git URL for APM driver
  treewide: Fix typo in printk
 2016-03-17 21:38:27 -07:00
Linus Torvalds
d66435cc7d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 
Pull HID updates from Jiri Kosina:

 - functionally equivalent cleanups for wacom driver, making the code
   more readable, from Benjamin Tissoires

 - a bunch of improvements and fixes for thingm driver from Heiner
   Kallweit

 - bugfixes to out-of-bound access for generic parsing functions (which
   have been there since ever) extract() and implement(), from Dmitry
   Torokhov

 - a lot of added / improved device support in sony, wacom, microsoft,
   multitouch and logitech driver, from various people

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (44 commits)
  HID: microsoft: Add ID for MS Wireless Comfort Keyboard
  hid: thingm: reorder calls in thingm_probe
  HID: i2c-hid: fix OOB write in i2c_hid_set_or_send_report()
  HID: multitouch: Release all touch slots on reset_resume
  HID: usbhid: enable NO_INIT_REPORTS quirk for Semico USB Keykoard2
  HID: penmount: report only one button for PenMount 6000 USB touchscreen controller
  HID: i2c-hid: Fix suspend/resume when already runtime suspended
  HID: i2c-hid: Add hid-over-i2c name to i2c id table
  HID: multitouch: force retrieving of Win8 signature blob
  HID: Support for CMedia CM6533 HID audio jack controls
  HID: thingm: improve locking
  HID: thingm: switch to managed version of led_classdev_register
  HID: thingm: remove workqueue
  HID: corsair: fix mapping of non-keyboard usages
  HID: wacom: close the wireless receiver on remove()
  HID: wacom: cleanup input devices
  HID: wacom: reuse wacom_parse_and_register() in wireless_work
  HID: wacom: move down wireless_work()
  HID: wacom: break out parsing of device and registering of input
  HID: wacom: break out wacom_intuos_get_tool_type
  ...
 2016-03-17 21:32:20 -07:00
Linus Torvalds
1a46712aa9 This is the bulk of GPIO changes for kernel v4.6: 
Core changes:
 
 - The gpio_chip is now a *real device*. Until now the gpio chips
   were just piggybacking the parent device or (gasp) floating in
   space outside of the device model. We now finally make GPIO chips
   devices. The gpio_chip will create a gpio_device which contains
   a struct device, and this gpio_device struct is kept private.
   Anything that needs to be kept private from the rest of the kernel
   will gradually be moved over to the gpio_device.
 
 - As a result of making the gpio_device a real device, we have added
   resource management, so devm_gpiochip_add_data() will cut down on
   overhead and reduce code lines. A huge slew of patches convert
   almost all drivers in the subsystem to use this.
 
 - Building on making the GPIO a real device, we add the first step
   of a new userspace ABI: the GPIO character device. We take small
   steps here, so we first add a pure *information* ABI and the tool
   "lsgpio" that will list all GPIO devices on the system and all
   lines on these devices. We can now discover GPIOs properly from
   userspace. We still have not come up with a way to actually *use*
   GPIOs from userspace.
 
 - To encourage people to use the character device for the future,
   we have it always-enabled when using GPIO. The old sysfs ABI is
   still opt-in (and can be used in parallel), but is marked as
   deprecated. We will keep it around for the foreseeable future,
   but it will not be extended to cover ever more use cases.
 
 Cleanup:
 
 - Bjorn Helgaas removed a whole slew of per-architecture <asm/gpio.h>
   includes. This dates back to when GPIO was an opt-in feature and
   no shared library even existed: just a header file with proper
   prototypes was provided and all semantics were up to the arch to
   implement. These patches make the GPIO chip even more a proper
   device and cleans out leftovers of the old in-kernel API here
   and there. Still some cruft is left but it's very little now.
 
 - There is still some clamping of return values for .get() going
   on, but we now return sane values in the vast majority of drivers
   and the errorpath is sanitized. Some patches for powerpc, blackfin
   and unicore still drop in.
 
 - We continue to switch the ARM, MIPS, blackfin, m68k local GPIO
   implementations to use gpiochip_add_data() and cut down on code
   lines.
 
 - MPC8xxx is converted to use the generic GPIO helpers.
 
 - ATH79 is converted to use the generic GPIO helpers.
 
 New drivers:
 
 - WinSystems WS16C48
 
 - Acces 104-DIO-48E
 
 - F81866 (a F7188x variant)
 
 - Qoric (a MPC8xxx variant)
 
 - TS-4800
 
 - SPI serializers (pisosr): simple 74xx shift registers connected
   to SPI to obtain a dirt-cheap output-only GPIO expander.
 
 - Texas Instruments TPIC2810
 
 - Texas Instruments TPS65218
 
 - Texas Instruments TPS65912
 
 - X-Gene (ARM64) standby GPIO controller
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Merge tag 'gpio-v4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO updates from Linus Walleij:
 "This is the bulk of GPIO changes for kernel v4.6.  There is quite a
  lot of interesting stuff going on.

  The patches to other subsystems and arch-wide are ACKed as far as
  possible, though I consider things like per-arch <asm/gpio.h> as
  essentially a part of the GPIO subsystem so it should not be needed.

  Core changes:

   - The gpio_chip is now a *real device*.  Until now the gpio chips
     were just piggybacking the parent device or (gasp) floating in
     space outside of the device model.

     We now finally make GPIO chips devices.  The gpio_chip will create
     a gpio_device which contains a struct device, and this gpio_device
     struct is kept private.  Anything that needs to be kept private
     from the rest of the kernel will gradually be moved over to the
     gpio_device.

   - As a result of making the gpio_device a real device, we have added
     resource management, so devm_gpiochip_add_data() will cut down on
     overhead and reduce code lines.  A huge slew of patches convert
     almost all drivers in the subsystem to use this.

   - Building on making the GPIO a real device, we add the first step of
     a new userspace ABI: the GPIO character device.  We take small
     steps here, so we first add a pure *information* ABI and the tool
     "lsgpio" that will list all GPIO devices on the system and all
     lines on these devices.

     We can now discover GPIOs properly from userspace.  We still have
     not come up with a way to actually *use* GPIOs from userspace.

   - To encourage people to use the character device for the future, we
     have it always-enabled when using GPIO.  The old sysfs ABI is still
     opt-in (and can be used in parallel), but is marked as deprecated.

     We will keep it around for the foreseeable future, but it will not
     be extended to cover ever more use cases.

  Cleanup:

   - Bjorn Helgaas removed a whole slew of per-architecture <asm/gpio.h>
     includes.

     This dates back to when GPIO was an opt-in feature and no shared
     library even existed: just a header file with proper prototypes was
     provided and all semantics were up to the arch to implement.  These
     patches make the GPIO chip even more a proper device and cleans out
     leftovers of the old in-kernel API here and there.

     Still some cruft is left but it's very little now.

   - There is still some clamping of return values for .get() going on,
     but we now return sane values in the vast majority of drivers and
     the errorpath is sanitized.  Some patches for powerpc, blackfin and
     unicore still drop in.

   - We continue to switch the ARM, MIPS, blackfin, m68k local GPIO
     implementations to use gpiochip_add_data() and cut down on code
     lines.

   - MPC8xxx is converted to use the generic GPIO helpers.

   - ATH79 is converted to use the generic GPIO helpers.

  New drivers:

   - WinSystems WS16C48

   - Acces 104-DIO-48E

   - F81866 (a F7188x variant)

   - Qoric (a MPC8xxx variant)

   - TS-4800

   - SPI serializers (pisosr): simple 74xx shift registers connected to
     SPI to obtain a dirt-cheap output-only GPIO expander.

   - Texas Instruments TPIC2810

   - Texas Instruments TPS65218

   - Texas Instruments TPS65912

   - X-Gene (ARM64) standby GPIO controller"

* tag 'gpio-v4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (194 commits)
  Revert "Share upstreaming patches"
  gpio: mcp23s08: Fix clearing of interrupt.
  gpiolib: Fix comment referring to gpio_*() in gpiod_*()
  gpio: pca953x: Fix pca953x_gpio_set_multiple() on 64-bit
  gpio: xgene: Fix kconfig for standby GIPO contoller
  gpio: Add generic serializer DT binding
  gpio: uapi: use 0xB4 as ioctl() major
  gpio: tps65912: fix bad merge
  Revert "gpio: lp3943: Drop pin_used and lp3943_gpio_request/lp3943_gpio_free"
  gpio: omap: drop dev field from gpio_bank structure
  gpio: mpc8xxx: Slightly update the code for better readability
  gpio: mpc8xxx: Remove *read_reg and *write_reg from struct mpc8xxx_gpio_chip
  gpio: mpc8xxx: Fixup setting gpio direction output
  gpio: mcp23s08: Add support for mcp23s18
  dt-bindings: gpio: altera: Fix altr,interrupt-type property
  gpio: add driver for MEN 16Z127 GPIO controller
  gpio: lp3943: Drop pin_used and lp3943_gpio_request/lp3943_gpio_free
  gpio: timberdale: Switch to devm_ioremap_resource()
  gpio: ts4800: Add IMX51 dependency
  gpiolib: rewrite gpiodev_add_to_list
  ...
 2016-03-17 21:05:32 -07:00
Linus Torvalds
82b666eee7 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu 
Pull m68knommu updates from Greg Ungerer:
 "The main change is the removal of the bit-rotten 68360 support.  Also
  a fix to always make the ethernet FEC platform info available"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68knommu: remove obsolete 68360 support
  m68knommu: fix FEC platform device registration when driver is modular
 2016-03-17 20:19:19 -07:00
Linus Torvalds
588ab3f9af arm64 updates for 4.6: 
- Initial page table creation reworked to avoid breaking large block
   mappings (huge pages) into smaller ones. The ARM architecture requires
   break-before-make in such cases to avoid TLB conflicts but that's not
   always possible on live page tables
 
 - Kernel virtual memory layout: the kernel image is no longer linked to
   the bottom of the linear mapping (PAGE_OFFSET) but at the bottom of
   the vmalloc space, allowing the kernel to be loaded (nearly) anywhere
   in physical RAM
 
 - Kernel ASLR: position independent kernel Image and modules being
   randomly mapped in the vmalloc space with the randomness is provided
   by UEFI (efi_get_random_bytes() patches merged via the arm64 tree,
   acked by Matt Fleming)
 
 - Implement relative exception tables for arm64, required by KASLR
   (initial code for ARCH_HAS_RELATIVE_EXTABLE added to lib/extable.c but
   actual x86 conversion to deferred to 4.7 because of the merge
   dependencies)
 
 - Support for the User Access Override feature of ARMv8.2: this allows
   uaccess functions (get_user etc.) to be implemented using LDTR/STTR
   instructions. Such instructions, when run by the kernel, perform
   unprivileged accesses adding an extra level of protection. The
   set_fs() macro is used to "upgrade" such instruction to privileged
   accesses via the UAO bit
 
 - Half-precision floating point support (part of ARMv8.2)
 
 - Optimisations for CPUs with or without a hardware prefetcher (using
   run-time code patching)
 
 - copy_page performance improvement to deal with 128 bytes at a time
 
 - Sanity checks on the CPU capabilities (via CPUID) to prevent
   incompatible secondary CPUs from being brought up (e.g. weird
   big.LITTLE configurations)
 
 - valid_user_regs() reworked for better sanity check of the sigcontext
   information (restored pstate information)
 
 - ACPI parking protocol implementation
 
 - CONFIG_DEBUG_RODATA enabled by default
 
 - VDSO code marked as read-only
 
 - DEBUG_PAGEALLOC support
 
 - ARCH_HAS_UBSAN_SANITIZE_ALL enabled
 
 - Erratum workaround Cavium ThunderX SoC
 
 - set_pte_at() fix for PROT_NONE mappings
 
 - Code clean-ups
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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:
 "Here are the main arm64 updates for 4.6.  There are some relatively
  intrusive changes to support KASLR, the reworking of the kernel
  virtual memory layout and initial page table creation.

  Summary:

   - Initial page table creation reworked to avoid breaking large block
     mappings (huge pages) into smaller ones.  The ARM architecture
     requires break-before-make in such cases to avoid TLB conflicts but
     that's not always possible on live page tables

   - Kernel virtual memory layout: the kernel image is no longer linked
     to the bottom of the linear mapping (PAGE_OFFSET) but at the bottom
     of the vmalloc space, allowing the kernel to be loaded (nearly)
     anywhere in physical RAM

   - Kernel ASLR: position independent kernel Image and modules being
     randomly mapped in the vmalloc space with the randomness is
     provided by UEFI (efi_get_random_bytes() patches merged via the
     arm64 tree, acked by Matt Fleming)

   - Implement relative exception tables for arm64, required by KASLR
     (initial code for ARCH_HAS_RELATIVE_EXTABLE added to lib/extable.c
     but actual x86 conversion to deferred to 4.7 because of the merge
     dependencies)

   - Support for the User Access Override feature of ARMv8.2: this
     allows uaccess functions (get_user etc.) to be implemented using
     LDTR/STTR instructions.  Such instructions, when run by the kernel,
     perform unprivileged accesses adding an extra level of protection.
     The set_fs() macro is used to "upgrade" such instruction to
     privileged accesses via the UAO bit

   - Half-precision floating point support (part of ARMv8.2)

   - Optimisations for CPUs with or without a hardware prefetcher (using
     run-time code patching)

   - copy_page performance improvement to deal with 128 bytes at a time

   - Sanity checks on the CPU capabilities (via CPUID) to prevent
     incompatible secondary CPUs from being brought up (e.g.  weird
     big.LITTLE configurations)

   - valid_user_regs() reworked for better sanity check of the
     sigcontext information (restored pstate information)

   - ACPI parking protocol implementation

   - CONFIG_DEBUG_RODATA enabled by default

   - VDSO code marked as read-only

   - DEBUG_PAGEALLOC support

   - ARCH_HAS_UBSAN_SANITIZE_ALL enabled

   - Erratum workaround Cavium ThunderX SoC

   - set_pte_at() fix for PROT_NONE mappings

   - Code clean-ups"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (99 commits)
  arm64: kasan: Fix zero shadow mapping overriding kernel image shadow
  arm64: kasan: Use actual memory node when populating the kernel image shadow
  arm64: Update PTE_RDONLY in set_pte_at() for PROT_NONE permission
  arm64: Fix misspellings in comments.
  arm64: efi: add missing frame pointer assignment
  arm64: make mrs_s prefixing implicit in read_cpuid
  arm64: enable CONFIG_DEBUG_RODATA by default
  arm64: Rework valid_user_regs
  arm64: mm: check at build time that PAGE_OFFSET divides the VA space evenly
  arm64: KVM: Move kvm_call_hyp back to its original localtion
  arm64: mm: treat memstart_addr as a signed quantity
  arm64: mm: list kernel sections in order
  arm64: lse: deal with clobbered IP registers after branch via PLT
  arm64: mm: dump: Use VA_START directly instead of private LOWEST_ADDR
  arm64: kconfig: add submenu for 8.2 architectural features
  arm64: kernel: acpi: fix ioremap in ACPI parking protocol cpu_postboot
  arm64: Add support for Half precision floating point
  arm64: Remove fixmap include fragility
  arm64: Add workaround for Cavium erratum 27456
  arm64: mm: Mark .rodata as RO
  ...
 2016-03-17 20:03:47 -07:00
Linus Torvalds
3d15cfdb1b linux-kselftest-4.6-rc1 
This update for Kselftest adds:
 
 - A new feature to create test-specific kconfig fragments.
   This feature helps configure Kselftests to test specific
   Kernel Configuration options as opposed to defconfig.
 
 - A new test for Media Controller API
 
 - A few fixes
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Merge tag 'linux-kselftest-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull Kselftest updates from Shuah Khan:
 "This update for Kselftest adds:

   - A new feature to create test-specific kconfig fragments.  This
     feature helps configure Kselftests to test specific Kernel
     Configuration options as opposed to defconfig.

   - A new test for Media Controller API

   - A few fixes"

* tag 'linux-kselftest-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: media_dcevice_test fix usage information
  selftests: media_dcevice_test fix to handle ioctl failure case
  selftests: add missing .gitignore file or entry
  Makefile: add kselftest-merge
  selftests: create test-specific kconfig fragments
  selftests: breakpoint: add step_after_suspend_test
  selftests: add a new test for Media Controller API
 2016-03-17 19:37:08 -07:00
Linus Torvalds
5cd0911a9e Allow ram backend to be configured with addresses above 4GB 
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Merge tag 'please-pull-pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux

Pull pstore update from Tony Luck:
 "Allow ram backend to be configured with addresses above 4GB"

* tag 'please-pull-pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  pstore: Add support for 64 Bit address space
 2016-03-17 16:57:55 -07:00
Linus Torvalds
1ca80a0a3e GFS2: merge window 
We only have six patches ready for this merge window.
 
 - Arnd Bergmann contributed a patch that fixes an uninitialized variable
   warning.
 - The second patch avoids a kernel panic due to referencing an iopen
   glock that may not be held, in an error path.
 - The third patch fixes a rounding error that caused xfs_tests direct IO
   write "fsx" tests to fail on GFS2.
 - The fourth patch tidies up the code path when glocks are being reused
   to recreate a dinode that was recently deleted.
 - The fifth reverts an ages-old patch that should no longer be needed, and
   which interfered with the transition of dinodes from unlinked to free.
 - And lastly, a patch to eliminate a function parameter that's not needed.
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Merge tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2

Pull GFS2 updates from Bob Peterson:
 "We only have six patches ready for this merge window:

   - Arnd Bergmann contributed a patch that fixes an uninitialized
     variable warning.

   - The second patch avoids a kernel panic due to referencing an iopen
     glock that may not be held, in an error path.

   - The third patch fixes a rounding error that caused xfs_tests direct
     IO write "fsx" tests to fail on GFS2.

   - The fourth patch tidies up the code path when glocks are being
     reused to recreate a dinode that was recently deleted.

   - The fifth reverts an ages-old patch that should no longer be
     needed, and which interfered with the transition of dinodes from
     unlinked to free.

   - And lastly, a patch to eliminate a function parameter that's not
     needed"

* tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  GFS2: Eliminate parameter non_block on gfs2_inode_lookup
  GFS2: Don't filter out I_FREEING inodes anymore
  GFS2: Prevent delete work from occurring on glocks used for create
  GFS2: Fix direct IO write rounding error
  gfs2: avoid uninitialized variable warning
  GFS2: Check if iopen is held when deleting inode
 2016-03-17 16:51:32 -07:00
Linus Torvalds
d77bed0d4c dlm for 4.6 
Previous changes introduced the use of socket error reporting
 for dlm sockets.  This set includes two fixes in how the
 socket error callbacks are used.
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Merge tag 'dlm-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm

Pull dlm updates from David Teigland:
 "Previous changes introduced the use of socket error reporting for dlm
  sockets.  This set includes two fixes in how the socket error
  callbacks are used"

* tag 'dlm-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
  DLM: Save and restore socket callbacks properly
  DLM: Replace nodeid_to_addr with kernel_getpeername
 2016-03-17 16:38:36 -07:00
Linus Torvalds
faeb20ecfa Performance improvements in SEEK_DATA and xattr scalability 
improvements, plus a lot of clean ups and bug fixes.
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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:
 "Performance improvements in SEEK_DATA and xattr scalability
  improvements, plus a lot of clean ups and bug fixes"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (38 commits)
  ext4: clean up error handling in the MMP support
  jbd2: do not fail journal because of frozen_buffer allocation failure
  ext4: use __GFP_NOFAIL in ext4_free_blocks()
  ext4: fix compile error while opening the macro DOUBLE_CHECK
  ext4: print ext4 mount option data_err=abort correctly
  ext4: fix NULL pointer dereference in ext4_mark_inode_dirty()
  ext4: drop unneeded BUFFER_TRACE in ext4_delete_inline_entry()
  ext4: fix misspellings in comments.
  jbd2: fix FS corruption possibility in jbd2_journal_destroy() on umount path
  ext4: more efficient SEEK_DATA implementation
  ext4: cleanup handling of bh->b_state in DAX mmap
  ext4: return hole from ext4_map_blocks()
  ext4: factor out determining of hole size
  ext4: fix setting of referenced bit in ext4_es_lookup_extent()
  ext4: remove i_ioend_count
  ext4: simplify io_end handling for AIO DIO
  ext4: move trans handling and completion deferal out of _ext4_get_block
  ext4: rename and split get blocks functions
  ext4: use i_mutex to serialize unaligned AIO DIO
  ext4: pack ioend structure better
  ...
 2016-03-17 16:31:18 -07:00
Linus Torvalds
364e8dd9d6 Configfs changes for the 4.6 merge window: 
- A large patch from me to simplify setting up the list of default
    groups by actually implementing it as a list instead of an array.
  - a small Y2083 prep patch from Deepa Dinamani.  Probably doesn't matter
    on it's own, but it seems like he is trying to get rid of all CURRENT_TIME
    uses in file systems, which is a worthwhile goal.
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Merge tag 'configfs-for-linus' of git://git.infradead.org/users/hch/configfs

Pull configfs updates from Christoph Hellwig:

 - A large patch from me to simplify setting up the list of default
   groups by actually implementing it as a list instead of an array.

 - a small Y2083 prep patch from Deepa Dinamani.  Probably doesn't
   matter on it's own, but it seems like he is trying to get rid of all
   CURRENT_TIME uses in file systems, which is a worthwhile goal.

* tag 'configfs-for-linus' of git://git.infradead.org/users/hch/configfs:
  configfs: switch ->default groups to a linked list
  configfs: Replace CURRENT_TIME by current_fs_time()
 2016-03-17 16:25:46 -07:00
Jessica Yu
f9310b2f9a sscanf: implement basic character sets 
Implement basic character sets for the '%[' conversion specifier.

The '%[' conversion specifier matches a nonempty sequence of characters
from the specified set of accepted (or with '^', rejected) characters
between the brackets.  The substring matched is to be made up of
characters in (or not in) the set.  This is useful for matching
substrings that are delimited by something other than spaces.

This implementation differs from its glibc counterpart in the following ways:
 (1) No support for character ranges (e.g., 'a-z' or '0-9')
 (2) The hyphen '-' is not a special character
 (3) The closing bracket ']' cannot be matched
 (4) No support (yet) for discarding matching input ('%*[')

The bitmap code is largely based upon sample code which was provided by
Rasmus.

The motivation for adding character set support to sscanf originally
stemmed from the kernel livepatching project.  An ongoing patchset
utilizes new livepatch Elf symbol and section names to store important
metadata livepatch needs to properly apply its patches.  Such metadata
is stored in these section and symbol names as substrings delimited by
periods '.' and commas ','.  For example, a livepatch symbol name might
look like this:

.klp.sym.vmlinux.printk,0

However, sscanf currently can only extract "substrings" delimited by
whitespace using the "%s" specifier.  Thus for the above symbol name,
one cannot not use sscanf() to extract substrings "vmlinux" or
"printk", for example.  A number of discussions on the livepatch
mailing list dealing with string parsing code for extracting these '.'
and ',' delimited substrings eventually led to the conclusion that such
code would be completely unnecessary if the kernel sscanf() supported
character sets.  Thus only a single sscanf() call would be necessary to
extract these substrings.  In addition, such an addition to sscanf()
could benefit other areas of the kernel that might have a similar need
in the future.

[akpm@linux-foundation.org: 80-col tweaks]
Signed-off-by: Jessica Yu <jeyu@redhat.com>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Josh Poimboeuf
2553b67a1f lib/bug.c: use common WARN helper 
The traceoff_on_warning option doesn't have any effect on s390, powerpc,
arm64, parisc, and sh because there are two different types of WARN
implementations:

1) The above mentioned architectures treat WARN() as a special case of a
   BUG() exception.  They handle warnings in report_bug() in lib/bug.c.

2) All other architectures just call warn_slowpath_*() directly.  Their
   warnings are handled in warn_slowpath_common() in kernel/panic.c.

Support traceoff_on_warning on all architectures and prevent any future
divergence by using a single common function to emit the warning.

Also remove the '()' from '%pS()', because the parentheses look funky:

  [   45.607629] WARNING: at /root/warn_mod/warn_mod.c:17 .init_dummy+0x20/0x40 [warn_mod]()

Reported-by: Chunyu Hu <chuhu@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Kees Cook
4cc7ecb7f2 param: convert some "on"/"off" users to strtobool 
This changes several users of manual "on"/"off" parsing to use
strtobool.

Some side-effects:
- these uses will now parse y/n/1/0 meaningfully too
- the early_param uses will now bubble up parse errors

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Amitkumar Karwar <akarwar@marvell.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Joe Perches <joe@perches.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Nishant Sarmukadam <nishants@marvell.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Steve French <sfrench@samba.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Kees Cook
a81a5a17d4 lib: add "on"/"off" support to kstrtobool 
Add support for "on" and "off" when converting to boolean.

Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Amitkumar Karwar <akarwar@marvell.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Joe Perches <joe@perches.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nishant Sarmukadam <nishants@marvell.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Steve French <sfrench@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Kees Cook
1404297ebf lib: update single-char callers of strtobool() 
Some callers of strtobool() were passing a pointer to unterminated
strings.  In preparation of adding multi-character processing to
kstrtobool(), update the callers to not pass single-character pointers,
and switch to using the new kstrtobool_from_user() helper where
possible.

Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Amitkumar Karwar <akarwar@marvell.com>
Cc: Nishant Sarmukadam <nishants@marvell.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Steve French <sfrench@samba.org>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Joe Perches <joe@perches.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Kees Cook
ef95159907 lib: move strtobool() to kstrtobool() 
Create the kstrtobool_from_user() helper and move strtobool() logic into
the new kstrtobool() (matching all the other kstrto* functions).
Provides an inline wrapper for existing strtobool() callers.

Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Joe Perches <joe@perches.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Amitkumar Karwar <akarwar@marvell.com>
Cc: Nishant Sarmukadam <nishants@marvell.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Steve French <sfrench@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Denys Vlasenko
e3bde9568d include/linux/unaligned: force inlining of byteswap operations 
Sometimes gcc mysteriously doesn't inline
very small functions we expect to be inlined. See

    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66122

With this .config:
http://busybox.net/~vda/kernel_config_OPTIMIZE_INLINING_and_Os,
the following functions get deinlined many times.
Examples of disassembly:

<get_unaligned_be16> (24 copies, 108 calls):
       66 8b 07                mov    (%rdi),%ax
       55                      push   %rbp
       48 89 e5                mov    %rsp,%rbp
       86 e0                   xchg   %ah,%al
       5d                      pop    %rbp
       c3                      retq

<get_unaligned_be32> (25 copies, 181 calls):
       8b 07                   mov    (%rdi),%eax
       55                      push   %rbp
       48 89 e5                mov    %rsp,%rbp
       0f c8                   bswap  %eax
       5d                      pop    %rbp
       c3                      retq

<get_unaligned_be64> (23 copies, 94 calls):
       48 8b 07                mov    (%rdi),%rax
       55                      push   %rbp
       48 89 e5                mov    %rsp,%rbp
       48 0f c8                bswap  %rax
       5d                      pop    %rbp
       c3                      retq

<put_unaligned_be16> (2 copies, 11 calls):
       89 f8                   mov    %edi,%eax
       55                      push   %rbp
       c1 ef 08                shr    $0x8,%edi
       c1 e0 08                shl    $0x8,%eax
       09 c7                   or     %eax,%edi
       48 89 e5                mov    %rsp,%rbp
       66 89 3e                mov    %di,(%rsi)

<put_unaligned_be32> (8 copies, 43 calls):
       55                      push   %rbp
       0f cf                   bswap  %edi
       89 3e                   mov    %edi,(%rsi)
       48 89 e5                mov    %rsp,%rbp
       5d                      pop    %rbp
       c3                      retq

<put_unaligned_be64> (26 copies, 157 calls):
       55                      push   %rbp
       48 0f cf                bswap  %rdi
       48 89 3e                mov    %rdi,(%rsi)
       48 89 e5                mov    %rsp,%rbp
       5d                      pop    %rbp
       c3                      retq

This patch fixes this via s/inline/__always_inline/.

It only affects arches with efficient unaligned access insns, such as x86.
(arched which lack such ops do not include linux/unaligned/access_ok.h)

Code size decrease after the patch is ~8.5k:

    text     data      bss       dec     hex filename
92197848 20826112 36417536 149441496 8e84bd8 vmlinux
92189231 20826144 36417536 149432911 8e82a4f vmlinux6_unaligned_be_after

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Graf <tgraf@suug.ch>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Denys Vlasenko
bc27fb68aa include/uapi/linux/byteorder, swab: force inlining of some byteswap operations 
Sometimes gcc mysteriously doesn't inline
very small functions we expect to be inlined. See

    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66122

With this .config:
http://busybox.net/~vda/kernel_config_OPTIMIZE_INLINING_and_Os,
the following functions get deinlined many times.
Examples of disassembly:

<get_unaligned_be16> (12 copies, 51 calls):
       66 8b 07                mov    (%rdi),%ax
       55                      push   %rbp
       48 89 e5                mov    %rsp,%rbp
       86 e0                   xchg   %ah,%al
       5d                      pop    %rbp
       c3                      retq

<get_unaligned_be32> (12 copies, 135 calls):
       8b 07                   mov    (%rdi),%eax
       55                      push   %rbp
       48 89 e5                mov    %rsp,%rbp
       0f c8                   bswap  %eax
       5d                      pop    %rbp
       c3                      retq

<get_unaligned_be64> (2 copies, 20 calls):
       48 8b 07                mov    (%rdi),%rax
       55                      push   %rbp
       48 89 e5                mov    %rsp,%rbp
       48 0f c8                bswap  %rax
       5d                      pop    %rbp
       c3                      retq

<__swab16p> (16 copies, 146 calls):
       55                      push   %rbp
       89 f8                   mov    %edi,%eax
       86 e0                   xchg   %ah,%al
       48 89 e5                mov    %rsp,%rbp
       5d                      pop    %rbp
       c3                      retq

<__swab32p> (43 copies, ~560 calls):
       55                      push   %rbp
       89 f8                   mov    %edi,%eax
       0f c8                   bswap  %eax
       48 89 e5                mov    %rsp,%rbp
       5d                      pop    %rbp
       c3                      retq

<__swab64p> (21 copies, 119 calls):
       55                      push   %rbp
       48 89 f8                mov    %rdi,%rax
       48 0f c8                bswap  %rax
       48 89 e5                mov    %rsp,%rbp
       5d                      pop    %rbp
       c3                      retq

<__swab32s> (6 copies, 47 calls):
       8b 07                   mov    (%rdi),%eax
       55                      push   %rbp
       48 89 e5                mov    %rsp,%rbp
       0f c8                   bswap  %eax
       89 07                   mov    %eax,(%rdi)
       5d                      pop    %rbp
       c3                      retq

This patch fixes this via s/inline/__always_inline/.
Code size decrease after the patch is ~4.5k:

    text     data      bss       dec     hex filename
92202377 20826112 36417536 149446025 8e85d89 vmlinux
92197848 20826112 36417536 149441496 8e84bd8 vmlinux5_swap_after

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Graf <tgraf@suug.ch>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Denys Vlasenko
a644fdf029 include/asm-generic/atomic-long.h: force inlining of some atomic_long operations 
Sometimes gcc mysteriously doesn't inline
very small functions we expect to be inlined. See

    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66122

With this .config:
http://busybox.net/~vda/kernel_config_OPTIMIZE_INLINING_and_Os,
atomic_long_inc(), atomic_long_dec() and atomic_long_add()
functions get deinlined about 40 times. Examples of disassembly:

<atomic_long_inc> (21 copies, 147 calls):
       55                      push   %rbp
       48 89 e5                mov    %rsp,%rbp
       f0 48 ff 07             lock incq (%rdi)
       5d                      pop    %rbp
       c3                      retq

<atomic_long_dec> (4 copies, 14 calls) is similar to inc.

<atomic_long_add> (11 copies, 41 calls):
       55                      push   %rbp
       48 89 e5                mov    %rsp,%rbp
       f0 48 01 3e             lock add %rdi,(%rsi)
       5d                      pop    %rbp
       c3                      retq

This patch fixes this via s/inline/__always_inline/.
Code size decrease after the patch is ~1.3k:

    text     data      bss       dec     hex filename
92203657 20826112 36417536 149447305 8e86289 vmlinux
92202377 20826112 36417536 149446025 8e85d89 vmlinux4_atomiclong_after

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Graf <tgraf@suug.ch>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Heikki Krogerus
efc2cd7937 usb: common: convert to use match_string() helper 
The new helper returns index of the mathing string in an array.  We
would use it here.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Andy Shevchenko
9adb9254f4 ide: hpt366: convert to use match_string() helper 
The new helper returns index of the mathing string in an array.  We
would use it here.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Andy Shevchenko
908913bdbd ata: hpt366: convert to use match_string() helper 
The new helper returns index of the mathing string in an array.  We
would use it here.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Andy Shevchenko
ea32cea140 power: ab8500: convert to use match_string() helper 
The new helper returns index of the mathing string in an array.  We
would use it here.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Andy Shevchenko
5f4768225c power: charger_manager: convert to use match_string() helper 
The new helper returns index of the mathing string in an array.  We
would use it here.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Andy Shevchenko
7a5cf52dbb drm/edid: convert to use match_string() helper 
The new helper returns index of the mathing string in an array.  We
would use it here.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00
Andy Shevchenko
dff4359448 pinctrl: convert to use match_string() helper 
The new helper returns index of the mathing string in an array.  We
would use it here.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2016-03-17 15:09:34 -07:00