Commit Graph

558835 Commits

Author SHA1 Message Date
Linus Torvalds a5e1d715a8 ARM: SoC cleanups for v4.4
Again we have a sizable (but not huge) cleanup branch with a net delta of about
 -3k lines.
 
 Main contents here is:
 
  - A bunch of development/cleanup of a few PXA boards
  - Removal of bockw platforms on shmobile, since the platform has now gone
    completely multiplatform. Whee!
  - move of the 32kHz timer on OMAP to a proper timesource
  - Misc cleanup of older OMAP material (incl removal of one board file)
  - Switch over to new common PWM lookup support for several platforms
 
 There's also a handful of other cleanups across the tree, but the above are
 the major pieces.
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Merge tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC cleanups from Olof Johansson:
 "Again we have a sizable (but not huge) cleanup branch with a net delta
  of about -3k lines.

  Main contents here is:

   - A bunch of development/cleanup of a few PXA boards
   - Removal of bockw platforms on shmobile, since the platform has now
     gone completely multiplatform.  Whee!
   - move of the 32kHz timer on OMAP to a proper timesource
   - Misc cleanup of older OMAP material (incl removal of one board
     file)
   - Switch over to new common PWM lookup support for several platforms

  There's also a handful of other cleanups across the tree, but the
  above are the major pieces"

* tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (103 commits)
  ARM: OMAP3: hwmod data: Remove legacy mailbox data and addrs
  ARM: DRA7: hwmod data: Remove spinlock hwmod addrs
  ARM: OMAP4: hwmod data: Remove spinlock hwmod addrs
  ARM: DRA7/AM335x/AM437x: hwmod: Remove gpmc address space from hwmod data
  ARM: Remove __ref on hotplug cpu die path
  ARM: Remove open-coded version of IRQCHIP_DECLARE
  arm: omap2: board-generic: use omap4_local_timer_init for AM437x
  ARM: DRA7/AM335x/AM437x: hwmod: Remove elm address space from hwmod data
  ARM: OMAP: Remove duplicated operand in OR operation
  clocksource: ti-32k: make it depend on GENERIC_CLOCKSOURCE
  ARM: pxa: remove incorrect __init annotation on pxa27x_set_pwrmode
  ARM: pxa: raumfeld: make some variables static
  ARM: OMAP: Change all cpu_is_* occurences to soc_is_* for id.c
  ARM: OMAP2+: Rename cpu_is macros to soc_is
  arm: omap2: timer: limit hwmod usage to non-DT boots
  arm: omap2+: select 32k clocksource driver
  clocksource: add TI 32.768 Hz counter driver
  arm: omap2: timer: rename omap_sync32k_timer_init()
  arm: omap2: timer: always call clocksource_of_init() when DT
  arm: omap2: timer: move realtime_counter_init() around
  ...
2015-11-10 14:48:36 -08:00
Linus Torvalds 64fd8c8a0f ARM: SoC non-urgent fixes for v4.4
A handful of fixes that came in and didn't seem warranted to go in through
 the 4.3-rc cycle.
 
  - MAINTAINERS updates for one of the Broadcom platforms and lpc18xx
  - A couple of non-critical Davinci bugfixes
  - A fix to reset irq affinity for TI platforms (silences a warning at reboot)
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Merge tag 'armsoc-fixes-nc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC non-urgent fixes from Olof Johansson:
 "A handful of fixes that came in and didn't seem warranted to go in
  through the 4.3-rc cycle.

   - MAINTAINERS updates for one of the Broadcom platforms and lpc18xx
   - A couple of non-critical Davinci bugfixes
   - A fix to reset irq affinity for TI platforms (silences a warning at
     reboot)"

* tag 'armsoc-fixes-nc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  MAINTAINERS: update lpc18xx entry with more drivers
  soc: ti: reset irq affinity before freeing irq
  ARM: cns3xxx: pci: avoid potential stack overflow
  ARM: davinci: clock: Correct return values for API functions
  ARM: davinci: re-use %*ph specifier
  MAINTAINERS: add entry for the Broadcom Northstar Plus SoCs
2015-11-10 14:45:05 -08:00
Tony Luck b0aeba741b Fix alloc_node_mem_map() to work on ia64 again
In commit a1c34a3bf0 ("mm: Don't offset memmap for flatmem") Laura
fixed a problem for Srinivas relating to the bottom 2MB of RAM on an ARM
IFC6410 board.

One small wrinkle on ia64 is that it allocates the node_mem_map earlier
in arch code, so it skips the block of code where "offset" is
initialized.

Move initialization of start and offset before the check for the
node_mem_map so that they will always be available in the latter part of
the function.

Tested-by: Laura Abbott <laura@labbott.name>
Fixes: a1c34a3bf0 (mm: Don't offset memmap for flatmem)
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-10 14:44:26 -08:00
Linus Torvalds 3934bbc044 config fix for md
config dependency needed as md/raid5 now uses crc32c
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Merge tag 'md/4.4-rc0-fix' of git://neil.brown.name/md

Pull config fix for md from Neil Brown:
 "New config dependency needed as md/raid5 now uses crc32c"

* tag 'md/4.4-rc0-fix' of git://neil.brown.name/md:
  raid5-cache: add crc32c Kconfig dependency
2015-11-10 12:13:00 -08:00
Linus Torvalds 264015f8a8 libnvdimm for 4.4:
1/ Add support for the ACPI 6.0 NFIT hot add mechanism to process
    updates of the NFIT at runtime.
 
 2/ Teach the coredump implementation how to filter out DAX mappings.
 
 3/ Introduce NUMA hints for allocations made by the pmem driver, and as
    a side effect all devm allocations now hint their NUMA node by
    default.
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Merge tag 'libnvdimm-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
 "Outside of the new ACPI-NFIT hot-add support this pull request is more
  notable for what it does not contain, than what it does.  There were a
  handful of development topics this cycle, dax get_user_pages, dax
  fsync, and raw block dax, that need more more iteration and will wait
  for 4.5.

  The patches to make devm and the pmem driver NUMA aware have been in
  -next for several weeks.  The hot-add support has not, but is
  contained to the NFIT driver and is passing unit tests.  The coredump
  support is straightforward and was looked over by Jeff.  All of it has
  received a 0day build success notification across 107 configs.

  Summary:

   - Add support for the ACPI 6.0 NFIT hot add mechanism to process
     updates of the NFIT at runtime.

   - Teach the coredump implementation how to filter out DAX mappings.

   - Introduce NUMA hints for allocations made by the pmem driver, and
     as a side effect all devm allocations now hint their NUMA node by
     default"

* tag 'libnvdimm-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  coredump: add DAX filtering for FDPIC ELF coredumps
  coredump: add DAX filtering for ELF coredumps
  acpi: nfit: Add support for hot-add
  nfit: in acpi_nfit_init, break on a 0-length table
  pmem, memremap: convert to numa aware allocations
  devm_memremap_pages: use numa_mem_id
  devm: make allocations numa aware by default
  devm_memremap: convert to return ERR_PTR
  devm_memunmap: use devres_release()
  pmem: kill memremap_pmem()
  x86, mm: quiet arch_add_memory()
2015-11-10 12:07:22 -08:00
Linus Torvalds d55fc37856 Merge branch 'i2c/for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:

 - New drivers: UniPhier (with and without FIFO)

 - some drivers got some bigger rework: ismt, designware, img-scb (rcar
   had to be reverted because issues were showing up just lately)

 - ACPI: reworked the device scanning and added support for muxes

... and quite a lot of driver bugfixes and cleanups this time.  All
files touched outside of the i2c realm have proper acks.

* 'i2c/for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (70 commits)
  i2c: rcar: Revert the latest refactoring series
  i2c: pnx: remove superfluous assignment
  MAINTAINERS: i2c: drop i2c-pnx maintainer
  MAINTAINERS: i2c: mark also subdirectories as maintained
  i2c: cadence: enable driver for ARM64
  i2c: i801: Document Intel DNV and Broxton
  i2c: at91: manage unexpected RXRDY flag when starting a transfer
  i2c: pnx: Use setup_timer instead of open coding it
  i2c: add ACPI support for I2C mux ports
  acpi: add acpi_preset_companion() stub
  i2c: pxa: Add support for pxa910/988 & new configuration features
  i2c: au1550: Convert to devm_kzalloc and devm_ioremap_resource
  i2c-dev: Fix I2C_SLAVE ioctl comment
  i2c-dev: Fix typo in ioctl name reference
  i2c: sirf: tune the divider to make i2c bus freq more accurate
  i2c: imx: Use -ENXIO as error in the NACK case
  i2c: i801: Add support for Intel Broxton
  i2c: i801: Add support for Intel DNV
  i2c: mediatek: add i2c resume support
  i2c: imx: implement bus recovery
  ...
2015-11-10 11:58:25 -08:00
Linus Torvalds 42d4ebb42a Merge git://www.linux-watchdog.org/linux-watchdog
Pull watchdog update from Wim Van Sebroeck:

 - New driver for Broadcom 7038 Set-Top Box
 - imx2_wdt: Use register definition in regmap_write()
 - intel-mid: add Magic Closure flag
 - watchdog framework improvements:
      - Use device tree alias for naming watchdogs
      - propagate ping error code to the user space
      - Always evaluate new timeout against min_timeout
      - Use single variable name for struct watchdog_device
 - include clean-ups

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: include: add units for timeout values in kerneldoc
  watchdog: include: fix some typos
  watchdog: core: propagate ping error code to the user space
  watchdog: watchdog_dev: Use single variable name for struct watchdog_device
  watchdog: Always evaluate new timeout against min_timeout
  watchdog: intel-mid: add Magic Closure flag
  watchdog: imx2_wdt: Use register definition in regmap_write()
  watchdog: watchdog_dev: Use device tree alias for naming watchdogs
  watchdog: Watchdog driver for Broadcom Set-Top Box
  watchdog: bcm7038: add device tree binding documentation
2015-11-10 10:11:12 -08:00
Linus Torvalds 6aabef681d Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
Pull tiny hwmon update from Jean Delvare.

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  hwmon: (k10temp) Remove duplicate pci-id define
2015-11-10 10:09:01 -08:00
Linus Torvalds 1eb196c3c0 NTB Bug fixes for potential NULL pointer accesses, accesses of a freed
pointer, invalid buffer pointer, and a compiler warning.  Also,
 unification of upstream/downstream addresses.
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Merge tag 'ntb-4.4' of git://github.com/jonmason/ntb

Pull NTB bugfixes from Jon Mason:
 "NTB Bug fixes for potential NULL pointer accesses, accesses of a freed
  pointer, invalid buffer pointer, and a compiler warning.

  Also, unification of upstream/downstream addresses"

* tag 'ntb-4.4' of git://github.com/jonmason/ntb:
  NTB: fix 32-bit compiler warning
  NTB: unify translation addresses
  NTB: invalid buf pointer in multi-MW setups
  NTB: remove unused variable
  NTB: fix access of free-ed pointer
  NTB: Fix issue where we may be accessing NULL ptr
2015-11-10 10:07:50 -08:00
Linus Torvalds 041c79514a dmaengine updates for 4.4-rc1
This time we have a very typical update which is mostly fixes and updates to
 drivers and no new drivers.
 
 - Biggest change is coming from Peter for edma cleanup which even caused
   some last minute regression, things seem settled now
 - idma64 and dw updates
 - iotdma updates
 - module autoload fixes for various drivers
 - scatter gather support for hdmac
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Merge tag 'dmaengine-4.4-rc1' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine updates from Vinod Koul:
 "This time we have a very typical update which is mostly fixes and
  updates to drivers and no new drivers.

   - the biggest change is coming from Peter for edma cleanup which even
     caused some last minute regression, things seem settled now
   - idma64 and dw updates
   - iotdma updates
   - module autoload fixes for various drivers
   - scatter gather support for hdmac"

* tag 'dmaengine-4.4-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (77 commits)
  dmaengine: edma: Add dummy driver skeleton for edma3-tptc
  Revert "ARM: DTS: am33xx: Use the new DT bindings for the eDMA3"
  Revert "ARM: DTS: am437x: Use the new DT bindings for the eDMA3"
  dmaengine: dw: some Intel devices has no memcpy support
  dmaengine: dw: platform: provide platform data for Intel
  dmaengine: dw: don't override platform data with autocfg
  dmaengine: hdmac: Add scatter-gathered memset support
  dmaengine: hdmac: factorise memset descriptor allocation
  dmaengine: virt-dma: Fix kernel-doc annotations
  ARM: DTS: am437x: Use the new DT bindings for the eDMA3
  ARM: DTS: am33xx: Use the new DT bindings for the eDMA3
  dmaengine: edma: New device tree binding
  dmaengine: Kconfig: edma: Select TI_DMA_CROSSBAR in case of ARCH_OMAP
  dmaengine: ti-dma-crossbar: Add support for crossbar on AM33xx/AM43xx
  dmaengine: edma: Merge the of parsing functions
  dmaengine: edma: Do not allocate memory for edma_rsv_info in case of DT boot
  dmaengine: edma: Refactor the dma device and channel struct initialization
  dmaengine: edma: Get qDMA channel information from HW also
  dmaengine: edma: Merge map_dmach_to_queue into assign_channel_eventq
  dmaengine: edma: Correct PaRAM access function names (_parm_ to _param_)
  ...
2015-11-10 10:05:17 -08:00
Linus Torvalds 7d884710bb RTC for 4.4
Core:
  - Fix rtctest error path
 
 New drivers:
  - Microcrystal RV8803
 
 Subsystem wide cleanups:
  - remove misuse of IRQF_NO_SUSPEND flag
 
 Drivers:
  - at91rm9200: clear RTC alarm status flag prior to suspending
  - davinci: remove incorrect reference to probe function
  - ds1307: Fix alarm programming for mcp794xx
  - ds1390: trickle charger support, fix ds1390_get_reg
  - isl1208: Pass the IRQF_ONESHOT flag
  - opal: fix type of token
  - pcf2127: fix RTC_READ_VL, remove useless driver version
  - pcf85063: return an error when date is invalid
  - pcf8563: add CLKOUT to common clock framework
  - rx8025: remove unnecessary braces
  - s3c: Set year, month, day value for setting alarm
  - stmp3xxx: unify register access macros
  - License fixes: pcf2127, da9063
  - wakeup-source support for isl12057 and opal
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Merge tag 'rtc-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "Core:
   - Fix rtctest error path

  New drivers:
   - Microcrystal RV8803

  Subsystem wide cleanups:
   - remove misuse of IRQF_NO_SUSPEND flag

  Drivers:
   - at91rm9200: clear RTC alarm status flag prior to suspending
   - davinci: remove incorrect reference to probe function
   - ds1307: Fix alarm programming for mcp794xx
   - ds1390: trickle charger support, fix ds1390_get_reg
   - isl1208: Pass the IRQF_ONESHOT flag
   - opal: fix type of token
   - pcf2127: fix RTC_READ_VL, remove useless driver version
   - pcf85063: return an error when date is invalid
   - pcf8563: add CLKOUT to common clock framework
   - rx8025: remove unnecessary braces
   - s3c: Set year, month, day value for setting alarm
   - stmp3xxx: unify register access macros
   - License fixes: pcf2127, da9063
   - wakeup-source support for isl12057 and opal"

* tag 'rtc-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (23 commits)
  rtc: Add a driver for Micro Crystal RV8803
  rtc: s3c: Set year, month, day value for setting alarm
  rtc: ds1307: Fix alarm programming for mcp794xx
  rtc: isl12057: enable support for the standard "wakeup-source" property
  rtc: opal: enable support for the stardard "wakeup-source" property
  rtc: isl1208: Pass the IRQF_ONESHOT flag
  rtc: pcf8563: add CLKOUT to common clock framework
  rtc: davinci: remove incorrect reference to probe function
  rtc: at91rm9200: clear RTC alarm status flag prior to suspending
  rtc: pcf2127: remove useless driver version
  rtc: pcf2127: fix reading uninitialized value on RTC_READ_VL ioctl
  rtc: stmp3xxx: unify register access macros
  rtc: da9063: GPL copyright inconsistency fix
  rtc: pcf85063: return an error when date is invalid
  rtc: rx8025: remove unnecessary braces
  rtc: ds1343: remove misuse of IRQF_NO_SUSPEND flag
  rtc: ab8500: remove misuse of IRQF_NO_SUSPEND flag
  rtc: pl031: remove misuse of IRQF_NO_SUSPEND flag
  rtc: opal: fix type of token
  rtc: ds1390: Add trickle charger device tree binding
  ...
2015-11-10 10:01:21 -08:00
Linus Torvalds 3b13866869 fbdev changes for 4.4
* omap: fix hdmi audio configuration issue
 * ssd1307fb: add ssd1309 support
 * tridentfb: support DDC
 * gxt4500: enable support for non-PPC platforms
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Merge tag 'fbdev-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux

Pull fbdev updates from Tomi Valkeinen:
 - omap: fix hdmi audio configuration issue
 - ssd1307fb: add ssd1309 support
 - tridentfb: support DDC
 - gxt4500: enable support for non-PPC platforms

* tag 'fbdev-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
  radeonfb: Deinline large functions
  gxt4500: enable panning
  gxt4500: Use arch_phys_wc_* for framebuffer
  gxt4500: fix color order
  gxt4500: fix 16bpp 565 mode
  gxt4500: enable on non-PPC architectures
  tridentfb: Add DDC support
  fb_ddc: Allow I2C adapters without SCL read capability
  fbdev: ssd1307fb: add ssd1309 support
  fbdev: ssd1307fb: alphabetize headers
  video/omap: remove invalid check
  OMAPDSS: hdmi: Reconfigure and restart audio when display is enabled
2015-11-10 10:00:09 -08:00
Linus Torvalds 3e82806b97 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
 "I Was Almost Tempted To Capitalise Every Word, but then I decided I
  couldn't read it myself!

  I've also got one pull request for the sti driver outstanding.  It
  relied on a commit in Greg's tree and I didn't find out in time, that
  commit is in your tree now so I might send that along once this is
  merged.

  I also had the accidental misfortune to have access to a Skylake on my
  desk for a few days, and I've had to encourage Intel to try harder,
  which seems to be happening now.

  Here is the main drm-next pull request for 4.4.

  Highlights:

  New driver:
        vc4 driver for the Rasberry Pi VPU.
        (From Eric Anholt at Broadcom.)

  Core:
        Atomic fbdev support
        Atomic helpers for runtime pm
        dp/aux i2c STATUS_UPDATE handling
        struct_mutex usage cleanups.
        Generic of probing support.

  Documentation:
        Kerneldoc for VGA switcheroo code.
        Rename to gpu instead of drm to reflect scope.

  i915:
        Skylake GuC firmware fixes
        HPD A support
        VBT backlight fallbacks
        Fastboot by default for some systems
        FBC work
        BXT/SKL workarounds
        Skylake deeper sleep state fixes

  amdgpu:
        Enable GPU scheduler by default
        New atombios opcodes
        GPUVM debugging options
        Stoney support.
        Fencing cleanups.

  radeon:
        More efficient CS checking

  nouveau:
        gk20a instance memory handling improvements.
        Improved PGOB detection and GK107 support
        Kepler GDDR5 PLL statbility improvement
        G8x/GT2xx reclock improvements
        new userspace API compatiblity fixes.

  virtio-gpu:
        Add 3D support - qemu 2.5 has it merged for it's gtk backend.

  msm:
        Initial msm88896 (snapdragon 8200)

  exynos:
        HDMI cleanups
        Enable mixer driver byt default
        Add DECON-TV support

  vmwgfx:
        Move to using memremap + fixes.

  rcar-du:
        Add support for R8A7793/4 DU

  armada:
        Remove support for non-component mode
        Improved plane handling
        Power savings while in DPMS off.

  tda998x:
        Remove unused slave encoder support
        Use more HDMI helpers
        Fix EDID read handling

  dwhdmi:
        Interlace video mode support for ipu-v3/dw_hdmi
        Hotplug state fixes
        Audio driver integration

  imx:
        More color formats support.

  tegra:
        Minor fixes/improvements"

[ Merge fixup: remove unused variable 'dev' that had all uses removed in
  commit 4e270f088011: "drm/gem: Drop struct_mutex requirement from
  drm_gem_mmap_obj" ]

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (764 commits)
  drm/vmwgfx: Relax irq locking somewhat
  drm/vmwgfx: Properly flush cursor updates and page-flips
  drm/i915/skl: disable display side power well support for now
  drm/i915: Extend DSL readout fix to BDW and SKL.
  drm/i915: Do graphics device reset under forcewake
  drm/i915: Skip fence installation for objects with rotated views (v4)
  vga_switcheroo: Drop client power state VGA_SWITCHEROO_INIT
  drm/amdgpu: group together common fence implementation
  drm/amdgpu: remove AMDGPU_FENCE_OWNER_MOVE
  drm/amdgpu: remove now unused fence functions
  drm/amdgpu: fix fence fallback check
  drm/amdgpu: fix stoping the scheduler timeout
  drm/amdgpu: cleanup on error in amdgpu_cs_ioctl()
  drm/i915: Fix locking around GuC firmware load
  drm/amdgpu: update Fiji's Golden setting
  drm/amdgpu: update Fiji's rev id
  drm/amdgpu: extract common code in vi_common_early_init
  drm/amd/scheduler: don't oops on failure to load
  drm/amdgpu: don't oops on failure to load (v2)
  drm/amdgpu: don't VT switch on suspend
  ...
2015-11-10 09:33:06 -08:00
Linus Torvalds bd4f203e43 Merge branch 'akpm' (patches from Andrew)
Merge third patch-bomb from Andrew Morton:
 "We're pretty much done over here - I'm still waiting for a nouveau
  merge so I can cleanly finish up Christoph's dma-mapping rework.

   - bunch of small misc stuff

   - fold abs64() into abs(), remove abs64()

   - new_valid_dev() cleanups

   - binfmt_elf_fdpic feature work"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (24 commits)
  fs/binfmt_elf_fdpic.c: provide NOMMU loader for regular ELF binaries
  fs/stat.c: remove unnecessary new_valid_dev() check
  fs/reiserfs/namei.c: remove unnecessary new_valid_dev() check
  fs/nilfs2/namei.c: remove unnecessary new_valid_dev() check
  fs/ncpfs/dir.c: remove unnecessary new_valid_dev() check
  fs/jfs: remove unnecessary new_valid_dev() checks
  fs/hpfs/namei.c: remove unnecessary new_valid_dev() check
  fs/f2fs/namei.c: remove unnecessary new_valid_dev() check
  fs/ext2/namei.c: remove unnecessary new_valid_dev() check
  fs/exofs/namei.c: remove unnecessary new_valid_dev() check
  fs/btrfs/inode.c: remove unnecessary new_valid_dev() check
  fs/9p: remove unnecessary new_valid_dev() checks
  include/linux/kdev_t.h: old/new_valid_dev() can return bool
  include/linux/kdev_t.h: remove unused huge_valid_dev()
  kmap_atomic_to_page() has no users, remove it
  drivers/scsi/cxgbi: fix build with EXTRA_CFLAGS
  dma: remove external references to dma_supported
  Documentation/sysctl/vm.txt: fix misleading code reference of overcommit_memory
  remove abs64()
  kernel.h: make abs() work with 64-bit types
  ...
2015-11-09 21:05:13 -08:00
Linus Torvalds e6604ecb70 NFS client updates for Linux 4.4
Highlights include:
 
 Features:
 - RDMA client backchannel from Chuck
 - Support for NFSv4.2 file CLONE using the btrfs ioctl
 
 Bugfixes + cleanups
 - Move socket data receive out of the bottom halves and into a workqueue
 - Refactor NFSv4 error handling so synchronous and asynchronous RPC handles
   errors identically.
 - Fix a panic when blocks or object layouts reads return a bad data length
 - Fix nfsroot so it can handle a 1024 byte long path.
 - Fix bad usage of page offset in bl_read_pagelist
 - Various NFSv4 callback cleanups+fixes
 - Fix GETATTR bitmap verification
 - Support hexadecimal number for sunrpc debug sysctl files
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Merge tag 'nfs-for-4.4-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

  New features:
   - RDMA client backchannel from Chuck
   - Support for NFSv4.2 file CLONE using the btrfs ioctl

  Bugfixes + cleanups:
   - Move socket data receive out of the bottom halves and into a
     workqueue
   - Refactor NFSv4 error handling so synchronous and asynchronous RPC
     handles errors identically.
   - Fix a panic when blocks or object layouts reads return a bad data
     length
   - Fix nfsroot so it can handle a 1024 byte long path.
   - Fix bad usage of page offset in bl_read_pagelist
   - Various NFSv4 callback cleanups+fixes
   - Fix GETATTR bitmap verification
   - Support hexadecimal number for sunrpc debug sysctl files"

* tag 'nfs-for-4.4-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (53 commits)
  Sunrpc: Supports hexadecimal number for sysctl files of sunrpc debug
  nfs: Fix GETATTR bitmap verification
  nfs: Remove unused xdr page offsets in getacl/setacl arguments
  fs/nfs: remove unnecessary new_valid_dev check
  SUNRPC: fix variable type
  NFS: Enable client side NFSv4.1 backchannel to use other transports
  pNFS/flexfiles: Add support for FF_FLAGS_NO_IO_THRU_MDS
  pNFS/flexfiles: When mirrored, retry failed reads by switching mirrors
  SUNRPC: Remove the TCP-only restriction in bc_svc_process()
  svcrdma: Add backward direction service for RPC/RDMA transport
  xprtrdma: Handle incoming backward direction RPC calls
  xprtrdma: Add support for sending backward direction RPC replies
  xprtrdma: Pre-allocate Work Requests for backchannel
  xprtrdma: Pre-allocate backward rpc_rqst and send/receive buffers
  SUNRPC: Abstract backchannel operations
  xprtrdma: Saving IRQs no longer needed for rb_lock
  xprtrdma: Remove reply tasklet
  xprtrdma: Use workqueue to process RPC/RDMA replies
  xprtrdma: Replace send and receive arrays
  xprtrdma: Refactor reply handler error handling
  ...
2015-11-09 18:11:22 -08:00
Linus Torvalds 9d74288ca7 GFS2: merge window
Here is a list of patches we've accumulated for GFS2 for the current upstream
 merge window. There are only six patches this time:
 
 1. A cleanup patch from Andreas to remove the gl_spin #define in favor
    of its value for the sake of clarity.
 2. A fix from Andy Price to mark the inode dirty during fallocate.
 3. A fix from Andy Price to set s_mode on mount failures to prevent
    a stack trace.
 4. A patch from me to prevent a kernel BUG() in trans_add_meta/trans_add_data
    due to uninitialized storage.
 5. A patch from me to protecting our freeing of the in-core directory
    hash table to prevent double-free.
 6. A fix for a page/block rounding problem that resulted in a metadata
    coherency problem when the block size != page size.
 
 I've got a lot more patches in various stages of review and testing,
 but I'm afraid they'll have to wait until the next merge window. So
 next time we're likely to have a lot more.
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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:
 "Here is a list of patches we've accumulated for GFS2 for the current
  upstream merge window.  There are only six patches this time:

   1. A cleanup patch from Andreas to remove the gl_spin #define in favor
      of its value for the sake of clarity.
   2. A fix from Andy Price to mark the inode dirty during fallocate.
   3. A fix from Andy Price to set s_mode on mount failures to prevent a
      stack trace.
   4  A patch from me to prevent a kernel BUG() in trans_add_meta/trans_add_data
      due to uninitialized storage.
   5. A patch from me to protecting our freeing of the in-core directory
      hash table to prevent double-free.
   6. A fix for a page/block rounding problem that resulted in a metadata
      coherency problem when the block size != page size"

  I've got a lot more patches in various stages of review and testing,
  but I'm afraid they'll have to wait until the next merge window.  So
  next time we're likely to have a lot more"

* tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  GFS2: Fix rgrp end rounding problem for bsize < page size
  GFS2: Protect freeing directory hash table with i_lock spin_lock
  gfs2: Remove gl_spin define
  gfs2: Add missing else in trans_add_meta/data
  GFS2: Set s_mode before parsing mount options
  GFS2: fallocate: do not rely on file_update_time to mark the inode dirty
2015-11-09 18:01:23 -08:00
Linus Torvalds 123a28d8b5 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull ext2 fix from Jan Kara:
 "Fix for DAX on ext2"

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  ext2: Add locking for DAX faults
2015-11-09 17:38:34 -08:00
Linus Torvalds 373ee21eec Merge branch 'parisc-4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
 "We have two patches in here:

   - The parisc uapi headers have been screwed up since quite some time.
     This patch fixes some bugs (e.g. endianess not respected in
     compat_semid64_ds) and cleans them up (e.g. uid_t was used instead
     of __kernel_uid_t) so that they can be used by userspace again.
     This patch has been reviewed by Arnd Bergmann and is scheduled for
     stable kernel series.

   - Drop the hpux_stat64 struct from stat.h, we do not support HP-UX
     binaries since kernel 4.0"

* 'parisc-4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fixes and cleanups in kernel uapi header files
  parisc: Drop hpux_stat64 struct from stat.h header file
2015-11-09 16:37:00 -08:00
Linus Torvalds f4d68930a8 nios2 update for v4.4-rc1
- nios2: Remove unnecessary #ifdef guards
 - nios2: Switch to generic __xchg()
 - nios2: Fix unused variable warning
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Merge tag 'nios2-v4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2

Pull nios2 updates from Ley Foon Tan:

 - nios2: Remove unnecessary #ifdef guards
 - nios2: Switch to generic __xchg()
 - nios2: Fix unused variable warning

* tag 'nios2-v4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2:
  nios2: Remove unnecessary #ifdef guards
  nios2: Switch to generic __xchg()
  nios2: Fix unused variable warning
2015-11-09 16:36:10 -08:00
Linus Torvalds 3510ca19a8 Xtensa patchset for 4.4
- fix remaining issues with noMMU cores;
 - fix build for cores w/o cache or zero overhead loop options;
 - fix boot of secondary cores in SMP configuration;
 - add support for DMA to high memory pages;
 - add dma_to_phys and phys_to_dma functions.
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Merge tag 'xtensa-20151108' of git://github.com/czankel/xtensa-linux

Pull xtensa updates from Chris Zankel:

 - fix remaining issues with noMMU cores
 - fix build for cores w/o cache or zero overhead loop options
 - fix boot of secondary cores in SMP configuration
 - add support for DMA to high memory pages
 - add dma_to_phys and phys_to_dma functions.

* tag 'xtensa-20151108' of git://github.com/czankel/xtensa-linux:
  xtensa: implement dma_to_phys and phys_to_dma
  xtensa: support DMA to high memory
  Revert "xtensa: cache inquiry and unaligned cache handling functions"
  xtensa: drop unused sections and remapped reset handlers
  xtensa: fix secondary core boot in SMP
  xtensa: add FORCE_MAX_ZONEORDER to Kconfig
  xtensa: nommu: provide defconfig for de212 on kc705
  xtensa: nommu: xtfpga: add kc705 DTS
  xtensa: add de212 core variant
  xtensa: nommu: select HAVE_FUTEX_CMPXCHG
  xtensa: nommu: fix default memory start address
  xtensa: nommu: provide correct KIO addresses
  xtensa: nommu: fix USER_RING definition
  xtensa: xtfpga: fix integer overflow in TASK_SIZE
  xtensa: fix build for configs without cache options
  xtensa: fixes for configs without loop option
2015-11-09 16:32:13 -08:00
Linus Torvalds e4da7e9a54 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu/coldfire fix from Greg Ungerer:
 "Only a single patch, fixes brk area setup problem in nommu
  environments"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  fs/binfmt_elf_fdpic.c: fix brk area overlap with stack on NOMMU
2015-11-09 16:22:26 -08:00
Linus Torvalds 50c36504fc Nothing exciting, minor tweaks and cleanups.
Cheers,
 Rusty.
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Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

Pull module updates from Rusty Russell:
 "Nothing exciting, minor tweaks and cleanups"

* tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  scripts: [modpost] add new sections to white list
  modpost: Add flag -E for making section mismatches fatal
  params: don't ignore the rest of cmdline if parse_one() fails
  modpost: abort if a module symbol is too long
2015-11-09 15:53:39 -08:00
Rich Felker 1bde925d23 fs/binfmt_elf_fdpic.c: provide NOMMU loader for regular ELF binaries
The ELF binary loader in binfmt_elf.c requires an MMU, making it
impossible to use regular ELF binaries on NOMMU archs.  However, the FDPIC
ELF loader in binfmt_elf_fdpic.c is fully capable as a loader for plain
ELF, which requires constant displacements between LOAD segments, since it
already supports FDPIC ELF files flagged as needing constant displacement.

This patch adjusts the FDPIC ELF loader to accept non-FDPIC ELF files on
NOMMU archs.  They are treated identically to FDPIC ELF files with the
constant-displacement flag bit set, except for personality, which must
match the ABI of the program being loaded; the PER_LINUX_FDPIC personality
controls how the kernel interprets function pointers passed to sigaction.

Files that do not set a stack size requirement explicitly are given a
default stack size (matching the amount of committed stack the normal ELF
loader for MMU archs would give them) rather than being rejected; this is
necessary because plain ELF files generally do not declare stack
requirements in theit program headers.

Only ET_DYN (PIE) format ELF files are supported, since loading at a fixed
virtual address is not possible on NOMMU.

This patch was developed and tested on J2 (SH2-compatible) but should
be usable immediately on all archs where binfmt_elf_fdpic is
available. Moreover, by providing dummy definitions of the
elf_check_fdpic() and elf_check_const_displacement() macros for archs
which lack an FDPIC ABI, it should be possible to enable building of
binfmt_elf_fdpic on all other NOMMU archs and thereby give them ELF
binary support, but I have not yet tested this.

The motivation for using binfmt_elf_fdpic.c rather than adapting
binfmt_elf.c to NOMMU is that the former already has all the necessary
code to work properly on NOMMU and has already received widespread
real-world use and testing. I hope this is not controversial.

I'm not really happy with having to unset the FDPIC_FUNCPTRS
personality bit when loading non-FDPIC ELF. This bit should really
reset automatically on execve, since otherwise, executing non-ELF
binaries (e.g. bFLT) from an FDPIC process will leave the personality
in the wrong state and severely break signal handling. But that's a
separate, existing bug and I don't know the right place to fix it.

Signed-off-by: Rich Felker <dalias@libc.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: Oleg Endo <oleg.endo@t-online.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Yaowei Bai 28f65708a5 fs/stat.c: remove unnecessary new_valid_dev() check
new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed.  Remove it.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Yaowei Bai 3cc5d9a905 fs/reiserfs/namei.c: remove unnecessary new_valid_dev() check
new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed.  Remove it.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Yaowei Bai 3348a172be fs/nilfs2/namei.c: remove unnecessary new_valid_dev() check
new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed.  Remove it.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Yaowei Bai 4467e29f0c fs/ncpfs/dir.c: remove unnecessary new_valid_dev() check
new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed.  Remove it.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Petr Vandrovec <petr@vandrovec.name>
Cc: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@fb.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Yaowei Bai a2a1704409 fs/jfs: remove unnecessary new_valid_dev() checks
new_valid_dev() always returns 1, so the !new_valid_dev() checks are not
needed.  Remove them.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Acked-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Yaowei Bai fdca5e6a6d fs/hpfs/namei.c: remove unnecessary new_valid_dev() check
new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed.  Remove it.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Yaowei Bai a8415e4b13 fs/f2fs/namei.c: remove unnecessary new_valid_dev() check
new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed.  Remove it.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Changman Lee <cm224.lee@samsung.com>
Cc: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Yaowei Bai d7df00072e fs/ext2/namei.c: remove unnecessary new_valid_dev() check
new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed.  Remove it.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Jan Kara <jack@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Yaowei Bai 5738939289 fs/exofs/namei.c: remove unnecessary new_valid_dev() check
new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed.  Remove it.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Acked-by: Boaz Harrosh <ooo@electrozaur.com>
Cc: Benny Halevy <bhalevy@primarydata.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Yaowei Bai 7cac0a8599 fs/btrfs/inode.c: remove unnecessary new_valid_dev() check
new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed.  Remove it.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <jbacik@fb.com>
Acked-by: David Sterba <dsterba@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Yaowei Bai 349c7037b1 fs/9p: remove unnecessary new_valid_dev() checks
new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed.  Remove it.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@sandia.gov>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Yaowei Bai 8b9758b9c6 include/linux/kdev_t.h: old/new_valid_dev() can return bool
Make old/new_valid_dev return bool due to these two particular functions
only using either one or zero as their return value.

No functional change.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Yaowei Bai 7bc4f1d281 include/linux/kdev_t.h: remove unused huge_valid_dev()
There's no user of huge_valid_dev() any more, so remove it.

No functional change.

Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Nicolas Pitre 77c5b5da02 kmap_atomic_to_page() has no users, remove it
Removal started in commit 5bbeed12bd ("sparc32: drop unused
kmap_atomic_to_page").  Let's do it across the whole tree.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Jiri Slaby ce1fb04153 drivers/scsi/cxgbi: fix build with EXTRA_CFLAGS
EXTRA_CFLAGS are intended to be used on the command line, not by Kbuild.
In case of cxgbi drivers, use of EXTRA_CFLAGS results in a compilation
failure:

  drivers/scsi/cxgbi/cxgb4i/cxgb4i.c:24:21: fatal error: t4_regs.h: No such file or directory

when building like:

$ make drivers/scsi/cxgbi/ EXTRA_CFLAGS=-Wwhatever

Use ccflags-y instead of EXTRA_CFLAGS.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Christoph Hellwig 0e77acef8e dma: remove external references to dma_supported
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Chun Chen c56050c700 Documentation/sysctl/vm.txt: fix misleading code reference of overcommit_memory
The origin document references to cap_vm_enough_memory is because
cap_vm_enough_memory invoked __vm_enough_memory before and it no longer
does now.

Signed-off-by: Chun Chen <ramichen@tencent.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Andrew Morton 79211c8ed1 remove abs64()
Switch everything to the new and more capable implementation of abs().
Mainly to give the new abs() a bit of a workout.

Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Michal Nazarewicz c8299cb605 kernel.h: make abs() work with 64-bit types
For 64-bit arguments, the abs macro casts it to an int which leads to
lost precision and may cause incorrect results.  To deal with 64-bit
types abs64 macro has been introduced but still there are places where
abs macro is used incorrectly.

To deal with the problem, expand abs macro such that it operates on s64
type when dealing with 64-bit types while still returning long when
dealing with smaller types.

This fixes one known bug (per John):

The internal clocksteering done for fine-grained error correction uses a
: logarithmic approximation, so any time adjtimex() adjusts the clock
: steering, timekeeping_freqadjust() quickly approximates the correct clock
: frequency over a series of ticks.
:
: Unfortunately, the logic in timekeeping_freqadjust(), introduced in commit
: dc491596f6 (Rework frequency adjustments to work better w/ nohz),
: used the abs() function with a s64 error value to calculate the size of
: the approximated adjustment to be made.
:
: Per include/linux/kernel.h: "abs() should not be used for 64-bit types
: (s64, u64, long long) - use abs64()".
:
: Thus on 32-bit platforms, this resulted in the clocksteering to take a
: quite dampended random walk trying to converge on the proper frequency,
: which caused the adjustments to be made much slower then intended (most
: easily observed when large adjustments are made).

Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Reported-by: John Stultz <john.stultz@linaro.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Mathieu Desnoyers 9c2d5eebfe sparc/sparc64: allocate sys_membarrier system call number
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Eric B Munson 784567f4b0 mips: add entry for new mlock2 syscall
A previous commit introduced the new mlock2 syscall, add entries for the
MIPS architecture.

Signed-off-by: Eric B Munson <emunson@akamai.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Randy Dunlap dbce03b9e3 fs/writeback.c: fix kernel-doc warnings
Fix kernel-doc warnings in fs/fs-writeback.c by moving a #define macro to
after the function's opening brace.  Also #undef this macro at the end of
the function.

  ../fs/fs-writeback.c:1984: warning: Excess function parameter 'inode' description in 'I_DIRTY_INODE'
  ../fs/fs-writeback.c:1984: warning: Excess function parameter 'flags' description in 'I_DIRTY_INODE'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Randy Dunlap 30fdc8ee0e fs/inode.c: fix kernel-doc warning
Fix kernel-doc warning in fs/inode.c:

  ../fs/inode.c:1606: warning: No description found for parameter 'inode'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-09 15:11:24 -08:00
Ross Zwisler ab27a8d04b coredump: add DAX filtering for FDPIC ELF coredumps
Add explicit filtering for DAX mappings to FDPIC ELF coredump.  This is
useful because DAX mappings have the potential to be very large.

This patch has only been compile tested.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2015-11-09 13:29:54 -05:00
Ross Zwisler 5037835c1f coredump: add DAX filtering for ELF coredumps
Add two new flags to the existing coredump mechanism for ELF files to
allow us to explicitly filter DAX mappings.  This is desirable because
DAX mappings, like hugetlb mappings, have the potential to be very
large.

Update the coredump_filter documentation in
Documentation/filesystems/proc.txt so that it addresses the new DAX
coredump flags.  Also update the documented default value of
coredump_filter to be consistent with the core(5) man page.  The
documentation being updated talks about bit 4, Dump ELF headers, which
is enabled if CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is turned on in the
kernel config.  This kernel config option defaults to "y" if both ELF
binaries and coredump are enabled.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2015-11-09 13:29:54 -05:00
Dan Williams 85ce230051 Merge branch 'for-4.4/hotplug' into libnvdimm-for-next 2015-11-09 13:29:39 -05:00
Bob Peterson 31dddd9eb9 GFS2: Fix rgrp end rounding problem for bsize < page size
This patch fixes a bug introduced by commit 7005c3e. That patch
tries to map a vm range for resource groups, but the calculation
breaks down when the block size is less than the page size.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
2015-11-09 09:38:02 -06:00