Pull ARM SoC board changes from Arnd Bergmann:
 "As we continue to replace board files with device tree descriptions,
  this part of the ARM support is getting smaller.  We have basically
  just defconfig changes here this time, and a significant number of
  Renesas shmobile changes, as Renesas is still in the process of
  deprecating board file support"

* tag 'boards-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (92 commits)
  ARM: enable fhandle in multi_v7_defconfig
  ARM: tegra: enable fhandle in tegra_defconfig
  ARM: update multi_v7_defconfig for Tegra
  ARM: add Marvell Dove and some drivers to multi_v7 defconfig
  ARM: fix duplicate symbols in multi_v5_defconfig
  ARM: pxa: add gpio keys information
  ARM: tegra: defconfig updates
  ARM: config: keystone: enable AEMIF/NAND support
  ARM: qcom: Enable basic support for Qualcomm platforms in multi_v7_defconfig
  ARM: kirkwood: Add HP T5325 devices to {multi|mvebu}_v5_defconfig
  ARM: config: Add mvebu_v5_defconfig
  ARM: config: Add a multi_v5_defconfig
  ARM: shmobile: r7s72100: update defconfig for I2C usage
  ARM: shmobile: Remove Lager DT reference legacy clock bits
  ARM: shmobile: Remove Koelsch DT reference legacy clock bits
  ARM: shmobile: Remove KZM9D board code
  ARM: mvebu: update defconfigs for Armada 375 and 38x
  ARM: dove: Enable watchdog support in the defconfig
  ARM: mvebu: Enable watchdog support in defconfig
  ARM: config: keystone: enable led support
  ...

Pull ARM SoC specific changes from Arnd Bergmann:
 "Lots of changes specific to one of the SoC families.  Some that stick
  out are:

   - mach-qcom gains new features, most importantly SMP support for the
     newer chips (Stephen Boyd, Rohit Vaswani)
   - mvebu gains support for three new SoCs: Armada 375, 380 and 385
     (Thomas Petazzoni and Free-electrons team)
   - SMP support for Rockchips (Heiko Stübner)
   - Lots of i.MX changes (Shawn Guo)
   - Added support for BCM5301x SoC (Hauke Mehrtens)
   - Multiplatform support for Marvell Kirkwood and Dove (Andrew Lunn
     and Sebastian Hesselbarth doing the final part of a long journey)
   - Unify davinci platforms and remove obsolete ones (Sekhar Nori, Arnd
     Bergmann)"

* tag 'soc-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (126 commits)
  ARM: sunxi: Select HAVE_ARM_ARCH_TIMER
  ARM: cache-tauros2: remove ARMv6 code
  ARM: mvebu: don't select CONFIG_NEON
  ARM: davinci: fix DT booting with default defconfig
  ARM: configs: bcm_defconfig: enable bcm590xx regulator support
  ARM: davinci: remove tnetv107x support
  MAINTAINERS: Update ARM STi maintainers
  ARM: restrict BCM_KONA_UART to ARCH_BCM_MOBILE
  ARM: bcm21664: Add board support.
  ARM: sunxi: Add the new watchog compatibles to the reboot code
  ARM: enable ARM_HAS_SG_CHAIN for multiplatform
  ARM: davinci: remove da8xx_omapl_defconfig
  ARM: davinci: da8xx: fix multiple watchdog device registration
  ARM: davinci: add da8xx specific configs to davinci_all_defconfig
  ARM: davinci: enable da8xx build concurrently with older devices
  ARM: BCM5301X: workaround suppress fault
  ARM: BCM5301X: add early debugging support
  ARM: BCM5301X: initial support for the BCM5301X/BCM470X SoCs with ARM CPU
  ARM: mach-bcm: Remove GENERIC_TIME
  ARM: shmobile: APMU: Fix warnings due to improper printk formats
  ...

Pull ARM SoC cleanups from Arnd Bergmann:
 "These cleanup patches are mainly move stuff around and should all be
  harmless.  They are mainly split out so that other branches can be
  based on top to avoid conflicts.

  Notable changes are:

   - We finally remove all mach/timex.h, after CLOCK_TICK_RATE is no
     longer used (Uwe Kleine-König)
   - The Qualcomm MSM platform is split out into legacy mach-msm and
     new-style mach-qcom, to allow easier maintainance of the new
     hardware support without regressions (Kumar Gala)
   - A rework of some of the Kconfig logic to simplify multiplatform
     support (Rob Herring)
   - Samsung Exynos gets closer to supporting multiplatform (Sachin
     Kamat and others)
   - mach-bcm3528 gets merged into mach-bcm (Stephen Warren)
   - at91 gains some common clock framework support (Alexandre Belloni,
     Jean-Jacques Hiblot and other French people)"

* tag 'cleanup-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (89 commits)
  ARM: hisi: select HAVE_ARM_SCU only for SMP
  ARM: efm32: allow uncompress debug output
  ARM: prima2: build reset code standalone
  ARM: at91: add PWM clock
  ARM: at91: move sam9261 SoC to common clk
  ARM: at91: prepare common clk transition for sam9261 SoC
  ARM: at91: updated the at91_dt_defconfig with support for the ADS7846
  ARM: at91: dt: sam9261: Device Tree support for the at91sam9261ek
  ARM: at91: dt: defconfig: Added the sam9261 to the list of DT-enabled SOCs
  ARM: at91: dt: Add at91sam9261 dt SoC support
  ARM: at91: switch sam9rl to common clock framework
  ARM: at91/dt: define main clk frequency of at91sam9rlek
  ARM: at91/dt: define at91sam9rl clocks
  ARM: at91: prepare common clk transition for sam9rl SoCs
  ARM: at91: prepare sam9 dt boards transition to common clk
  ARM: at91: dt: sam9rl: Device Tree for the at91sam9rlek
  ARM: at91/defconfig: Add the sam9rl to the list of DT-enabled SOCs
  ARM: at91: Add at91sam9rl DT SoC support
  ARM: at91: prepare at91sam9rl DT transition
  ARM: at91/defconfig: refresh at91sam9260_9g20_defconfig
  ...

Pull ARM SoC non-critical bug fixes from Arnd Bergmann:
 "Lots of isolated bug fixes that were not found to be important enough
  to be submitted before the merge window or backported into stable
  kernels.

  The vast majority of these came out of Arnd's randconfig testing and
  just prevents running into build-time bugs in configurations that we
  do not care about in practice"

* tag 'fixes-non-critical-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (75 commits)
  ARM: at91: fix a typo
  ARM: moxart: fix CPU selection
  ARM: tegra: fix board DT pinmux setup
  ARM: nspire: Fix compiler warning
  IXP4xx: Fix DMA masks.
  Revert "ARM: ixp4xx: Make dma_set_coherent_mask common, correct implementation"
  IXP4xx: Fix Goramo Multilink GPIO conversion.
  Revert "ARM: ixp4xx: fix gpio rework"
  ARM: tegra: make debug_ll code build for ARMv6
  ARM: sunxi: fix build for THUMB2_KERNEL
  ARM: exynos: add missing include of linux/module.h
  ARM: exynos: fix l2x0 saved regs handling
  ARM: samsung: select CRC32 for SAMSUNG_PM_CHECK
  ARM: samsung: select ATAGS where necessary
  ARM: samsung: fix SAMSUNG_PM_DEBUG Kconfig logic
  ARM: samsung: allow serial driver to be disabled
  ARM: s5pv210: enable IDE support in MACH_TORBRECK
  ARM: s5p64x0: fix building with only one soc type
  ARM: s3c64xx: select power domains only when used
  ARM: s3c64xx: MACH_SMDK6400 needs HSMMC1
  ...

Pull ARM changes from Russell King:

 - Perf updates from Will Deacon:
   - Support for Qualcomm Krait processors (run perf on your phone!)
   - Support for Cortex-A12 (run perf stat on your FPGA!)
   - Support for perf_sample_event_took, allowing us to automatically decrease
     the sample rate if we can't handle the PMU interrupts quickly enough
     (run perf record on your FPGA!).

 - Basic uprobes support from David Long:
     This patch series adds basic uprobes support to ARM. It is based on
     patches developed earlier by Rabin Vincent. That approach of adding
     hooks into the kprobes instruction parsing code was not well received.
     This approach separates the ARM instruction parsing code in kprobes out
     into a separate set of functions which can be used by both kprobes and
     uprobes. Both kprobes and uprobes then provide their own semantic action
     tables to process the results of the parsing.

 - ARMv7M (microcontroller) updates from Uwe Kleine-König

 - OMAP DMA updates (recently added Vinod's Ack even though they've been
   sitting in linux-next for a few months) to reduce the reliance of
   omap-dma on the code in arch/arm.

 - SA11x0 changes from Dmitry Eremin-Solenikov and Alexander Shiyan

 - Support for Cortex-A12 CPU

 - Align support for ARMv6 with ARMv7 so they can cooperate better in a
   single zImage.

 - Addition of first AT_HWCAP2 feature bits for ARMv8 crypto support.

 - Removal of IRQ_DISABLED from various ARM files

 - Improved efficiency of virt_to_page() for single zImage

 - Patch from Ulf Hansson to permit runtime PM callbacks to be available for
   AMBA devices for suspend/resume as well.

 - Finally kill asm/system.h on ARM.

* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (89 commits)
  dmaengine: omap-dma: more consolidation of CCR register setup
  dmaengine: omap-dma: move IRQ handling to omap-dma
  dmaengine: omap-dma: move register read/writes into omap-dma.c
  ARM: omap: dma: get rid of 'p' allocation and clean up
  ARM: omap: move dma channel allocation into plat-omap code
  ARM: omap: dma: get rid of errata global
  ARM: omap: clean up DMA register accesses
  ARM: omap: remove almost-const variables
  ARM: omap: remove references to disable_irq_lch
  dmaengine: omap-dma: cleanup errata 3.3 handling
  dmaengine: omap-dma: provide register read/write functions
  dmaengine: omap-dma: use cached CCR value when enabling DMA
  dmaengine: omap-dma: move barrier to omap_dma_start_desc()
  dmaengine: omap-dma: move clnk_ctrl setting to preparation functions
  dmaengine: omap-dma: improve efficiency loading C.SA/C.EI/C.FI registers
  dmaengine: omap-dma: consolidate clearing channel status register
  dmaengine: omap-dma: move CCR buffering disable errata out of the fast path
  dmaengine: omap-dma: provide register definitions
  dmaengine: omap-dma: consolidate setup of CCR
  dmaengine: omap-dma: consolidate setup of CSDP
  ...

Pull Hexagon updates from Richard Kuo:
 "Mostly cleanups for compilation with allmodconfig and some other
  miscellaneous fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rkuo/linux-hexagon-kernel:
  Hexagon: update CR year for elf.h
  Hexagon: remove SP macro
  Hexagon:  set ELF_EXEC_PAGESIZE to PAGE_SIZE
  Hexagon: set the e_flags in user regset view for core dumps
  Hexagon: fix atomic_set
  Hexagon: add screen_info for VGA_CONSOLE
  hexagon: correct type on pgd copy
  smp, hexagon: kill SMP single function call interrupt
  arch: hexagon: include: asm: add generic macro 'mmiowb' in "io.h"
  arch: hexagon: kernel: hexagon_ksyms.c: export related symbols which various modules need
  arch: hexagon: kernel: reset.c: use function pointer instead of function for pm_power_off and export it
  arch: hexagon: include: asm: add "vga.h" in Kbuild
  arch: hexagon: include: asm: Kbuild: add generic "serial.h" in Kbuild
  arch: hexagon: include: uapi: asm: setup.h add swith macro __KERNEL__
  arch: hexagon: include: asm: add prefix "hvm[ci]_" for all enum members in "hexagon_vm.h"
  arch: hexagon: Kconfig: add HAVE_DMA_ATTR in Kconfig and remove "linux/dma-mapping.h" from "asm/dma-mapping.h"
  arch: hexagon: kernel: add export symbol function __delay()
  hexagon: include: asm: kgdb: extend DBG_MAX_REG_NUM for "cs0/1"
  hexagon: kernel: kgdb: include related header for pass compiling.
  hexagon: kernel: remove useless variables 'dn', 'r' and 'err' in time_init_deferred() in "time.c"

Pull m68k fixes from Greg Ungerer:
 "Just a couple of fixes.  Clean up compile warnings by using correct
  types in function args, and clean out the removed CONFIG_MTD_PARTITIONS"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68knommu: fix arg types for outs* functions
  m68k : Kill CONFIG_MTD_PARTITIONS

Pull exynos media updates from Mauro Carvalho Chehab:
 "These are the remaining patches I have for the merge windows.  It
  basically adds a new sensor and adds the needed DT bits for it to
  work"

* 'topic/exynos' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] s5p-fimc: Remove reference to outdated macro
  [media] s5p-jpeg: Fix broken indentation in jpeg-regs.h
  [media] exynos4-is: Add the FIMC-IS ISP capture DMA driver
  [media] exynos4-is: Add support for asynchronous subdevices registration
  [media] exynos4-is: Add clock provider for the SCLK_CAM clock outputs
  [media] exynos4-is: Use external s5k6a3 sensor driver
  [media] V4L: s5c73m3: Add device tree support
  [media] V4L: Add driver for s5k6a3 image sensor
  [media] Documentation: devicetree: Update Samsung FIMC DT binding
  [media] Documentation: dt: Add binding documentation for S5C73M3 camera
  [media] Documentation: dt: Add binding documentation for S5K6A3 image sensor

Pull fbdev changes from Tomi Valkeinen:
 "Various fbdev fixes and improvements, but nothing big"

* tag 'fbdev-main-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (38 commits)
  fbdev: Make the switch from generic to native driver less alarming
  Video: atmel: avoid the id of fix screen info is overwritten
  video: imxfb: Add DT default contrast control register property.
  video: atmel_lcdfb: ensure the hardware is initialized with the correct mode
  fbdev: vesafb: add dev->remove() callback
  fbdev: efifb: add dev->remove() callback
  video: pxa3xx-gcu: switch to devres functions
  video: pxa3xx-gcu: provide an empty .open call
  video: pxa3xx-gcu: pass around struct device *
  video: pxa3xx-gcu: rename some symbols
  sisfb: fix 1280x720 resolution support
  video: fbdev: uvesafb: Remove impossible code path in uvesafb_init_info
  video: fbdev: uvesafb: Remove redundant NULL check in uvesafb_remove
  fbdev: FB_OPENCORES should depend on HAS_DMA
  OMAPDSS: convert pixel clock to common videomode style
  OMAPDSS: Remove unused get_context_loss_count support
  OMAPDSS: use DISPC register to detect context loss
  video: da8xx-fb: Use "SIMPLE_DEV_PM_OPS" macro
  video: imxfb: Convert to SIMPLE_DEV_PM_OPS
  video: imxfb: Resolve mismatch between backlight/contrast
  ...

Pull single ktest fix from Steven Rostedt:
 "This just contains a single update by Satoru Takeuchi, which adds
  CLOSE_CONSOLE_SIGNAL to the kvm.conf file, as the kvm guest requires a
  different signal than a normal console uses"

* tag 'ktest-v3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
  ktest: Set CLOSE_CONSOLE_SIGNAL in the kvm.conf

Pull /dev/random changes from Ted Ts'o:
 "A number of cleanups plus support for the RDSEED instruction, which
  will be showing up in Intel Broadwell CPU's"

* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
  random: Add arch_has_random[_seed]()
  random: If we have arch_get_random_seed*(), try it before blocking
  random: Use arch_get_random_seed*() at init time and once a second
  x86, random: Enable the RDSEED instruction
  random: use the architectural HWRNG for the SHA's IV in extract_buf()
  random: clarify bits/bytes in wakeup thresholds
  random: entropy_bytes is actually bits
  random: simplify accounting code
  random: tighten bound on random_read_wakeup_thresh
  random: forget lock in lockless accounting
  random: simplify accounting logic
  random: fix comment on "account"
  random: simplify loop in random_read
  random: fix description of get_random_bytes
  random: fix comment on proc_do_uuid
  random: fix typos / spelling errors in comments

Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

The SP/r29 macro wasn't used anywhere else and was causing conflicts
with another module, so just remove it.
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Normal writes in our our architecture don't invalidate lock
reservations.
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

swapper_pg_dir is an array of pgd_t, not pgd_t*. This has no actual
effect since sizeof(pgd_t) == sizeof(pgd_t*), but unconfuses tools that
check types.
Signed-off-by: NIlia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Commit 9a46ad6d "smp: make smp_call_function_many() use logic
similar to smp_call_function_single()" has unified the way to handle
single and multiple cross-CPU function calls. Now only one intterupt
is needed for architecture specific code to support generic SMP function
call interfaces, so kill the redundant single function call interrupt.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Shaohua Li <shli@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jiri Kosina <trivial@kernel.org>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: linux-hexagon@vger.kernel.org
Signed-off-by: NJiang Liu <liuj97@gmail.com>
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Need dumy mmiowb(), or can not pass compiling, the related error with
allmodconfig:

    CC [M]  drivers/mmc/host/sdhci.o
  drivers/mmc/host/sdhci.c: In function 'sdhci_request':
  drivers/mmc/host/sdhci.c:1409:2: error: implicit declaration of function 'mmiowb' [-Werror=implicit-function-declaration]
Signed-off-by: NChen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Need export all related functions and symbols for various modules with
allmodconfig. The related errors:

    MODPOST 2879 modules
  ERROR: "__vmyield" [sound/sound_firmware.ko] undefined!
  ERROR: "__phys_offset" [sound/drivers/snd-dummy.ko] undefined!
  ERROR: "ioremap_nocache" [drivers/char/ipmi/ipmi_si.ko] undefined!
  ERROR: "__iounmap" [drivers/char/ipmi/ipmi_si.ko] undefined!
  ...

For including files, need "linux/*" first, then "asm/*". All related
included files and symbols need be sorted by alphabetical order.
Signed-off-by: NChen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

arch: hexagon: kernel: reset.c: use function pointer instead of function for pm_power_off and export it

'pm_power_off' is a function pointer, not a function, so need change
its type, and also need export it, or can not pass compiling with
allmodconfig. The related error:

    MODPOST 2879 modules
  ERROR: "pm_power_off" [drivers/char/ipmi/ipmi_poweroff.ko] undefined!
Signed-off-by: NChen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Need include generic "vga.h", or can not pass compiling with
allmodconfig, the related error:

    CC [M]  drivers/gpu/drm/drm_irq.o
  In file included from include/linux/vgaarb.h:34:0,
                   from drivers/gpu/drm/drm_irq.c:42:
  include/video/vga.h:22:21: fatal error: asm/vga.h: No such file or directory

Also move "preempt.h" upper to match sort order.
Signed-off-by: NChen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Add "serial.h" in Kbuild, or can not pass compiling with allmodconfig,
the related error:

    CC [M]  drivers/staging/speakup/speakup_acntpc.o
  In file included from drivers/staging/speakup/speakup_acntpc.c:33:0:
  drivers/staging/speakup/serialio.h:7:24: fatal error: asm/serial.h: No such file or directory
Signed-off-by: NChen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Define dummy '__init' instead of include "linux/init.h" if !__KERNEL__,
or can not pass checking. The related error (with allmodconfig under
hexagon):

    CHECK   include/asm (34 files)
  usr/include/asm/setup.h:22: included file 'linux/init.h' is not exported
Signed-off-by: NChen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Append "hvmc_" or "hvmi_" to all related enum members (which are too
common to make conflict with another sub-systems). The related error
with allmodconfig:

    CC [M]  drivers/md/raid1.o
  drivers/md/raid1.c:1440:13: error: 'status' redeclared as different kind of symbol
  arch/hexagon/include/asm/hexagon_vm.h:76:2: note: previous definition of 'status' was here

Also use 'affinity' instead of 'locdis' for __vmintop_affinity().
Signed-off-by: NChen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

arch: hexagon: Kconfig: add HAVE_DMA_ATTR in Kconfig and remove "linux/dma-mapping.h" from "asm/dma-mapping.h"

When HAS_DMA, and also need use generic implementation, HAVE_DMA_ATTR
must be enabled, or can not pass compiling with allmodconfig, the
related error:

    CC [M]  drivers/ata/libata-core.o
  drivers/ata/libata-core.c: In function 'ata_sg_clean':
  drivers/ata/libata-core.c:4598:3: error: implicit declaration of function 'dma_unmap_sg' [-Werror=implicit-function-declaration]
  drivers/ata/libata-core.c: In function 'ata_sg_setup':
  drivers/ata/libata-core.c:4708:2: error: implicit declaration of function 'dma_map_sg' [-Werror=implicit-function-declaration]

"linux/dma-mapping.h" will include "asm/dma-mapping.h", so need remove
"linux/dma-mapping.h" from "asm/dma-mapping.h",
Signed-off-by: NChen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Need add __delay() implementation, or can not pass allmodconfig in
next-20131118 tree.

The related error:

    CC      kernel/locking/spinlock_debug.o
  kernel/locking/spinlock_debug.c: In function '__spin_lock_debug':
  kernel/locking/spinlock_debug.c:114:3: error: implicit declaration of function '__delay' [-Werror=implicit-function-declaration]
Signed-off-by: NChen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Need extend maximized number for "cs0/1", the related warning (with
allmodconfig for v4):

  arch/hexagon/kernel/kgdb.c:79: warning: excess elements in array initializer
  arch/hexagon/kernel/kgdb.c:79: warning: (near initialization for 'dbg_reg_def')
  arch/hexagon/kernel/kgdb.c:80: warning: excess elements in array initializer
  arch/hexagon/kernel/kgdb.c:80: warning: (near initialization for 'dbg_reg_def')
Signed-off-by: NChen Gang <gang.chen@asianux.com>
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Need include related headers for pass compiling, the related error
(with allmodconfig for v4):

    CC      arch/hexagon/kernel/kgdb.o
  arch/hexagon/kernel/kgdb.c:30: error: invalid use of undefined type 'struct pt_regs'
  arch/hexagon/kernel/kgdb.c:31: error: invalid use of undefined type 'struct pt_regs'
  ...
  arch/hexagon/kernel/kgdb.c:220: error: implicit declaration of function 'local_irq_save'
  arch/hexagon/kernel/kgdb.c:222: error: implicit declaration of function 'local_irq_restore'
  ...
Signed-off-by: NChen Gang <gang.chen@asianux.com>
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

Remove them, since they are useless. The related warnings (with
allmodconfig for v4):

    CC      arch/hexagon/kernel/time.o
  arch/hexagon/kernel/time.c: In function 'time_init_deferred':
  arch/hexagon/kernel/time.c:196: warning: unused variable 'err'
  arch/hexagon/kernel/time.c:195: warning: unused variable 'r'
  arch/hexagon/kernel/time.c:194: warning: unused variable 'dn'
Signed-off-by: NChen Gang <gang.chen@asianux.com>
Signed-off-by: NRichard Kuo <rkuo@codeaurora.org>

get_user_pages(write=1, force=1) has always had odd behaviour on write-
protected shared mappings: although it demands FMODE_WRITE-access to the
underlying object (do_mmap_pgoff sets neither VM_SHARED nor VM_MAYWRITE
without that), it ends up with do_wp_page substituting private anonymous
Copied-On-Write pages for the shared file pages in the area.

That was long ago intentional, as a safety measure to prevent ptrace
setting a breakpoint (or POKETEXT or POKEDATA) from inadvertently
corrupting the underlying executable.  Yet exec and dynamic loaders open
the file read-only, and use MAP_PRIVATE rather than MAP_SHARED.

The traditional odd behaviour still causes surprises and bugs in mm, and
is probably not what any caller wants - even the comment on the flag
says "You do not want this" (although it's undoubtedly necessary for
overriding userspace protections in some contexts, and good when !write).

Let's stop doing that.  But it would be dangerous to remove the long-
standing safety at this stage, so just make get_user_pages(write,force)
fail with EFAULT when applied to a write-protected shared area.
Infiniband may in future want to force write through to underlying
object: we can add another FOLL_flag later to enable that if required.

Odd though the old behaviour was, there is no doubt that we may turn out
to break userspace with this change, and have to revert it quickly.
Issue a WARN_ON_ONCE to help debug the changed case (easily triggered by
userspace, so only once to prevent spamming the logs); and delay a few
associated cleanups until this change is proved.

get_user_pages callers who might see trouble from this change:
  ptrace poking, or writing to /proc/<pid>/mem
  drivers/infiniband/
  drivers/media/v4l2-core/
  drivers/gpu/drm/exynos/exynos_drm_gem.c
  drivers/staging/tidspbridge/core/tiomap3430.c
if they ever apply get_user_pages to write-protected shared mappings
of an object which was opened for writing.

I went to apply the same change to mm/nommu.c, but retreated.  NOMMU has
no place for COW, and its VM_flags conventions are not the same: I'd be
more likely to screw up NOMMU than make an improvement there.
Suggested-by: NLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: NHugh Dickins <hughd@google.com>
Acked-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Pull xfs update from Dave Chinner:
 "There are a couple of new fallocate features in this request - it was
  decided that it was easiest to push them through the XFS tree using
  topic branches and have the ext4 support be based on those branches.
  Hence you may see some overlap with the ext4 tree merge depending on
  how they including those topic branches into their tree.  Other than
  that, there is O_TMPFILE support, some cleanups and bug fixes.

  The main changes in the XFS tree for 3.15-rc1 are:

   - O_TMPFILE support
   - allowing AIO+DIO writes beyond EOF
   - FALLOC_FL_COLLAPSE_RANGE support for fallocate syscall and XFS
     implementation
   - FALLOC_FL_ZERO_RANGE support for fallocate syscall and XFS
     implementation
   - IO verifier cleanup and rework
   - stack usage reduction changes
   - vm_map_ram NOIO context fixes to remove lockdep warings
   - various bug fixes and cleanups"

* tag 'xfs-for-linus-3.15-rc1' of git://oss.sgi.com/xfs/xfs: (34 commits)
  xfs: fix directory hash ordering bug
  xfs: extra semi-colon breaks a condition
  xfs: Add support for FALLOC_FL_ZERO_RANGE
  fs: Introduce FALLOC_FL_ZERO_RANGE flag for fallocate
  xfs: inode log reservations are still too small
  xfs: xfs_check_page_type buffer checks need help
  xfs: avoid AGI/AGF deadlock scenario for inode chunk allocation
  xfs: use NOIO contexts for vm_map_ram
  xfs: don't leak EFSBADCRC to userspace
  xfs: fix directory inode iolock lockdep false positive
  xfs: allocate xfs_da_args to reduce stack footprint
  xfs: always do log forces via the workqueue
  xfs: modify verifiers to differentiate CRC from other errors
  xfs: print useful caller information in xfs_error_report
  xfs: add xfs_verifier_error()
  xfs: add helper for updating checksums on xfs_bufs
  xfs: add helper for verifying checksums on xfs_bufs
  xfs: Use defines for CRC offsets in all cases
  xfs: skip pointless CRC updates after verifier failures
  xfs: Add support FALLOC_FL_COLLAPSE_RANGE for fallocate
  ...

Pull ext4 updates from Ted Ts'o:
 "Major changes for 3.14 include support for the newly added ZERO_RANGE
  and COLLAPSE_RANGE fallocate operations, and scalability improvements
  in the jbd2 layer and in xattr handling when the extended attributes
  spill over into an external block.

  Other than that, the usual clean ups and minor bug fixes"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (42 commits)
  ext4: fix premature freeing of partial clusters split across leaf blocks
  ext4: remove unneeded test of ret variable
  ext4: fix comment typo
  ext4: make ext4_block_zero_page_range static
  ext4: atomically set inode->i_flags in ext4_set_inode_flags()
  ext4: optimize Hurd tests when reading/writing inodes
  ext4: kill i_version support for Hurd-castrated file systems
  ext4: each filesystem creates and uses its own mb_cache
  fs/mbcache.c: doucple the locking of local from global data
  fs/mbcache.c: change block and index hash chain to hlist_bl_node
  ext4: Introduce FALLOC_FL_ZERO_RANGE flag for fallocate
  ext4: refactor ext4_fallocate code
  ext4: Update inode i_size after the preallocation
  ext4: fix partial cluster handling for bigalloc file systems
  ext4: delete path dealloc code in ext4_ext_handle_uninitialized_extents
  ext4: only call sync_filesystm() when remounting read-only
  fs: push sync_filesystem() down to the file system's remount_fs()
  jbd2: improve error messages for inconsistent journal heads
  jbd2: minimize region locked by j_list_lock in jbd2_journal_forget()
  jbd2: minimize region locked by j_list_lock in journal_get_create_access()
  ...

Pull pstore fixes from Tony Luck:
 "Series of small bug fixes for pstore"

* tag 'please-pull-pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  pstore: Fix memory leak when decompress using big_oops_buf
  pstore: Fix buffer overflow while write offset equal to buffer size
  pstore: Correct the max_dump_cnt clearing of ramoops
  pstore: Fix NULL pointer fault if get NULL prz in ramoops_get_next_prz
  pstore: skip zero size persistent ram buffer in traverse
  pstore: clarify clearing of _read_cnt in ramoops_context

Pull ubifs updates from Artem Bityutskiy:
 "This pull request includes the 'ubiblock' driver which provides R/O
  block access to UBI volumes.  It is useful for those who want to use
  squashfs on top of raw flash devices.  UBI will provide bit-flip
  handling and wear-levelling in this case (e.g., if there are other UBI
  volumes with R/W UBIFS too).

  The driver is actually pretty small and it is part of the UBI kernel
  subsystem.  Delivered by Ezequiel Garcia, along with a piece of
  documentation on the MTD web site and the user-space tool for creating
  and removing block devices"

* tag 'upstream-3.15-rc1' of git://git.infradead.org/linux-ubifs:
  UBI: block: Remove __initdata from ubiblock_param_ops
  UBI: make UBI_IOCVOLCRBLK take a parameter for future usage
  UBI: rename block device ioctls
  UBI: block: Use ENOSYS as return value when CONFIG_UBIBLOCK=n
  UBI: block: Add CONFIG_BLOCK dependency
  UBI: block: Use 'u64' for the 64-bit dividend
  UBI: block: Mark init-only symbol as __initdata
  UBI: block: do not use term "attach"
  UBI: R/O block driver on top of UBI volumes

Pull fuse update from Miklos Szeredi:
 "This series adds cached writeback support to fuse, improving write
  throughput"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: fix "uninitialized variable" warning
  fuse: Turn writeback cache on
  fuse: Fix O_DIRECT operations vs cached writeback misorder
  fuse: fuse_flush() should wait on writeback
  fuse: Implement write_begin/write_end callbacks
  fuse: restructure fuse_readpage()
  fuse: Flush files on wb close
  fuse: Trust kernel i_mtime only
  fuse: Trust kernel i_size only
  fuse: Connection bit for enabling writeback
  fuse: Prepare to handle short reads
  fuse: Linking file to inode helper

Pull dlm updates from David Teigland:
 "This set includes a couple trivial cleanups and changes recovery log
  messages from DEBUG to INFO"

* tag 'dlm-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
  dlm: use INFO for recovery messages
  fs: Include appropriate header file in dlm/ast.c
  dlm: silence a harmless use after free warning

Pull btrfs changes from Chris Mason:
 "This is a pretty long stream of bug fixes and performance fixes.

  Qu Wenruo has replaced the btrfs async threads with regular kernel
  workqueues.  We'll keep an eye out for performance differences, but
  it's nice to be using more generic code for this.

  We still have some corruption fixes and other patches coming in for
  the merge window, but this batch is tested and ready to go"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (108 commits)
  Btrfs: fix a crash of clone with inline extents's split
  btrfs: fix uninit variable warning
  Btrfs: take into account total references when doing backref lookup
  Btrfs: part 2, fix incremental send's decision to delay a dir move/rename
  Btrfs: fix incremental send's decision to delay a dir move/rename
  Btrfs: remove unnecessary inode generation lookup in send
  Btrfs: fix race when updating existing ref head
  btrfs: Add trace for btrfs_workqueue alloc/destroy
  Btrfs: less fs tree lock contention when using autodefrag
  Btrfs: return EPERM when deleting a default subvolume
  Btrfs: add missing kfree in btrfs_destroy_workqueue
  Btrfs: cache extent states in defrag code path
  Btrfs: fix deadlock with nested trans handles
  Btrfs: fix possible empty list access when flushing the delalloc inodes
  Btrfs: split the global ordered extents mutex
  Btrfs: don't flush all delalloc inodes when we doesn't get s_umount lock
  Btrfs: reclaim delalloc metadata more aggressively
  Btrfs: remove unnecessary lock in may_commit_transaction()
  Btrfs: remove the unnecessary flush when preparing the pages
  Btrfs: just do dirty page flush for the inode with compression before direct IO
  ...

Pull GFS2 updates from Steven Whitehouse:
 "One of the main highlights this time, is not the patches themselves
  but instead the widening contributor base.  It is good to see that
  interest is increasing in GFS2, and I'd like to thank all the
  contributors to this patch set.

  In addition to the usual set of bug fixes and clean ups, there are
  patches to improve inode creation performance when xattrs are required
  and some improvements to the transaction code which is intended to
  help improve scalability after further changes in due course.

  Journal extent mapping is also updated to make it more efficient and
  again, this is a foundation for future work in this area.

  The maximum number of ACLs has been increased to 300 (for a 4k block
  size) which means that even with a few additional xattrs from selinux,
  everything should fit within a single fs block.

  There is also a patch to bring GFS2's own copy of the writepages code
  up to the same level as the core VFS.  Eventually we may be able to
  merge some of this code, since it is fairly similar.

  The other major change this time, is bringing consistency to the
  printing of messages via fs_<level>, pr_<level> macros"

* tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw: (29 commits)
  GFS2: Fix address space from page function
  GFS2: Fix uninitialized VFS inode in gfs2_create_inode
  GFS2: Fix return value in slot_get()
  GFS2: inline function gfs2_set_mode
  GFS2: Remove extraneous function gfs2_security_init
  GFS2: Increase the max number of ACLs
  GFS2: Re-add a call to log_flush_wait when flushing the journal
  GFS2: Ensure workqueue is scheduled after noexp request
  GFS2: check NULL return value in gfs2_ok_to_move
  GFS2: Convert gfs2_lm_withdraw to use fs_err
  GFS2: Use fs_<level> more often
  GFS2: Use pr_<level> more consistently
  GFS2: Move recovery variables to journal structure in memory
  GFS2: global conversion to pr_foo()
  GFS2: return -E2BIG if hit the maximum limits of ACLs
  GFS2: Clean up journal extent mapping
  GFS2: replace kmalloc - __vmalloc / memset 0
  GFS2: Remove extra "if" in gfs2_log_flush()
  fs: NULL dereference in posix_acl_to_xattr()
  GFS2: Move log buffer accounting to transaction
  ...