We currently do not check if any delimiter exists before the prefix
path in cifs_compose_mount_options(). Consequently when building the
devname using cifs_build_devname() we can end up with multiple
delimiters separating the UNC and the prefix path.

An issue was reported by the customer mounting a folder within a DFS
share from a Netapp server which uses McAfee antivirus. We have
narrowed down the cause to the use of double backslashes in the file
name used to open the file. This was determined to be caused because of
additional delimiters as a result of the bug.

In addition to changes in cifs_build_devname(), we also fix
cifs_parse_devname() to ignore any preceding delimiter for the prefix
path.

The problem was originally reported on RHEL 6 in RHEL bz 1252721. This
is the upstream version of the fix. The fix was confirmed by looking at
the packet capture of a DFS mount.
Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>

CIFS may be used as lower layer of overlayfs and accessing f_path.dentry can
lead to a crash.

Fix by replacing direct access of file->f_path.dentry with the
file_dentry() accessor, which will always return a native object.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Signed-off-by: Steve French <smfrench@gmail.com>

Pull parallel filesystem directory handling update from Al Viro.

This is the main parallel directory work by Al that makes the vfs layer
able to do lookup and readdir in parallel within a single directory.
That's a big change, since this used to be all protected by the
directory inode mutex.

The inode mutex is replaced by an rwsem, and serialization of lookups of
a single name is done by a "in-progress" dentry marker.

The series begins with xattr cleanups, and then ends with switching
filesystems over to actually doing the readdir in parallel (switching to
the "iterate_shared()" that only takes the read lock).

A more detailed explanation of the process from Al Viro:
 "The xattr work starts with some acl fixes, then switches ->getxattr to
  passing inode and dentry separately.  This is the point where the
  things start to get tricky - that got merged into the very beginning
  of the -rc3-based #work.lookups, to allow untangling the
  security_d_instantiate() mess.  The xattr work itself proceeds to
  switch a lot of filesystems to generic_...xattr(); no complications
  there.

  After that initial xattr work, the series then does the following:

   - untangle security_d_instantiate()

   - convert a bunch of open-coded lookup_one_len_unlocked() to calls of
     that thing; one such place (in overlayfs) actually yields a trivial
     conflict with overlayfs fixes later in the cycle - overlayfs ended
     up switching to a variant of lookup_one_len_unlocked() sans the
     permission checks.  I would've dropped that commit (it gets
     overridden on merge from #ovl-fixes in #for-next; proper resolution
     is to use the variant in mainline fs/overlayfs/super.c), but I
     didn't want to rebase the damn thing - it was fairly late in the
     cycle...

   - some filesystems had managed to depend on lookup/lookup exclusion
     for *fs-internal* data structures in a way that would break if we
     relaxed the VFS exclusion.  Fixing hadn't been hard, fortunately.

   - core of that series - parallel lookup machinery, replacing
     ->i_mutex with rwsem, making lookup_slow() take it only shared.  At
     that point lookups happen in parallel; lookups on the same name
     wait for the in-progress one to be done with that dentry.

     Surprisingly little code, at that - almost all of it is in
     fs/dcache.c, with fs/namei.c changes limited to lookup_slow() -
     making it use the new primitive and actually switching to locking
     shared.

   - parallel readdir stuff - first of all, we provide the exclusion on
     per-struct file basis, same as we do for read() vs lseek() for
     regular files.  That takes care of most of the needed exclusion in
     readdir/readdir; however, these guys are trickier than lookups, so
     I went for switching them one-by-one.  To do that, a new method
     '->iterate_shared()' is added and filesystems are switched to it
     as they are either confirmed to be OK with shared lock on directory
     or fixed to be OK with that.  I hope to kill the original method
     come next cycle (almost all in-tree filesystems are switched
     already), but it's still not quite finished.

   - several filesystems get switched to parallel readdir.  The
     interesting part here is dealing with dcache preseeding by readdir;
     that needs minor adjustment to be safe with directory locked only
     shared.

     Most of the filesystems doing that got switched to in those
     commits.  Important exception: NFS.  Turns out that NFS folks, with
     their, er, insistence on VFS getting the fuck out of the way of the
     Smart Filesystem Code That Knows How And What To Lock(tm) have
     grown the locking of their own.  They had their own homegrown
     rwsem, with lookup/readdir/atomic_open being *writers* (sillyunlink
     is the reader there).  Of course, with VFS getting the fuck out of
     the way, as requested, the actual smarts of the smart filesystem
     code etc. had become exposed...

   - do_last/lookup_open/atomic_open cleanups.  As the result, open()
     without O_CREAT locks the directory only shared.  Including the
     ->atomic_open() case.  Backmerge from #for-linus in the middle of
     that - atomic_open() fix got brought in.

   - then comes NFS switch to saner (VFS-based ;-) locking, killing the
     homegrown "lookup and readdir are writers" kinda-sorta rwsem.  All
     exclusion for sillyunlink/lookup is done by the parallel lookups
     mechanism.  Exclusion between sillyunlink and rmdir is a real rwsem
     now - rmdir being the writer.

     Result: NFS lookups/readdirs/O_CREAT-less opens happen in parallel
     now.

   - the rest of the series consists of switching a lot of filesystems
     to parallel readdir; in a lot of cases ->llseek() gets simplified
     as well.  One backmerge in there (again, #for-linus - rockridge
     fix)"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (74 commits)
  ext4: switch to ->iterate_shared()
  hfs: switch to ->iterate_shared()
  hfsplus: switch to ->iterate_shared()
  hostfs: switch to ->iterate_shared()
  hpfs: switch to ->iterate_shared()
  hpfs: handle allocation failures in hpfs_add_pos()
  gfs2: switch to ->iterate_shared()
  f2fs: switch to ->iterate_shared()
  afs: switch to ->iterate_shared()
  befs: switch to ->iterate_shared()
  befs: constify stuff a bit
  isofs: switch to ->iterate_shared()
  get_acorn_filename(): deobfuscate a bit
  btrfs: switch to ->iterate_shared()
  logfs: no need to lock directory in lseek
  switch ecryptfs to ->iterate_shared
  9p: switch to ->iterate_shared()
  fat: switch to ->iterate_shared()
  romfs, squashfs: switch to ->iterate_shared()
  more trivial ->iterate_shared conversions
  ...

Pull irq updates from Thomas Gleixner:
 "This update delivers:

   - Yet another interrupt chip diver (LPC32xx)
   - Core functions to handle partitioned per-cpu interrupts
   - Enhancements to the IPI core
   - Proper handling of irq type configuration
   - A large set of ARM GIC enhancements
   - The usual pile of small fixes, cleanups and enhancements"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
  irqchip/bcm2836: Use a more generic memory barrier call
  irqchip/bcm2836: Fix compiler warning on 64-bit build
  irqchip/bcm2836: Drop smp_set_ops on arm64 builds
  irqchip/gic: Add helper functions for GIC setup and teardown
  irqchip/gic: Store GIC configuration parameters
  irqchip/gic: Pass GIC pointer to save/restore functions
  irqchip/gic: Return an error if GIC initialisation fails
  irqchip/gic: Remove static irq_chip definition for eoimode1
  irqchip/gic: Don't initialise chip if mapping IO space fails
  irqchip/gic: WARN if setting the interrupt type for a PPI fails
  irqchip/gic: Don't unnecessarily write the IRQ configuration
  irqchip: Mask the non-type/sense bits when translating an IRQ
  genirq: Ensure IRQ descriptor is valid when setting-up the IRQ
  irqchip/gic-v3: Configure all interrupts as non-secure Group-1
  irqchip/gic-v2m: Add workaround for Broadcom NS2 GICv2m erratum
  irqchip/irq-alpine-msi: Don't use <asm-generic/msi.h>
  irqchip/mbigen: Checking for IS_ERR() instead of NULL
  irqchip/gic-v3: Remove inexistant register definition
  irqchip/gicv3-its: Don't allow devices whose ID is outside range
  irqchip: Add LPC32xx interrupt controller driver
  ...

Pull timer updates from Thomas Gleixner:
 "A rather small set of patches from the timer departement:

   - Some more y2038 work
   - Yet another new clocksource driver
   - The usual set of small fixes, cleanups and enhancements"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource/drivers/tegra: Remove unused suspend/resume code
  clockevents/driversi/mps2: add MPS2 Timer driver
  dt-bindings: document the MPS2 timer bindings
  clocksource/drivers/mtk_timer: Add __init attribute
  clockevents/drivers/dw_apb_timer: Implement ->set_state_oneshot_stopped()
  time: Introduce do_sys_settimeofday64()
  security: Introduce security_settime64()
  clocksource: Add missing include of of.h.

Merge tag 'trace-fixes-v4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing ring-buffer fixes from Steven Rostedt:
 "Hao Qin reported an integer overflow possibility with signed and
  unsigned numbers in the ring-buffer code.

    https://bugzilla.kernel.org/show_bug.cgi?id=118001

  At first I did not think this was too much of an issue, because the
  overflow would be caught later when either too much data was allocated
  or it would trigger RB_WARN_ON() which shuts down the ring buffer.

  But looking closer into it, I found that the right settings could
  bypass the checks and crash the kernel.  Luckily, this is only
  accessible by root.

  The first fix is to convert all the variables into long, such that we
  don't get into issues between 32 bit variables being assigned 64 bit
  ones.  This fixes the RB_WARN_ON() triggering.

  The next fix is to get rid of a duplicate DIV_ROUND_UP() that when
  called twice with the right value, can cause a kernel crash.

  The first DIV_ROUND_UP() is to normalize the input and it is checked
  against the minimum allowable value.  But then DIV_ROUND_UP() is
  called again, which can overflow due to the (a + b - 1)/b, logic.  The
  first called upped the value, the second can overflow (with the +b
  part).

  The second call to DIV_ROUND_UP() came in via a second change a while
  ago and the code is cleaned up to remove it"

* tag 'trace-fixes-v4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ring-buffer: Prevent overflow of size in ring_buffer_resize()
  ring-buffer: Use long for nr_pages to avoid overflow failures

Pull crypto update from Herbert Xu:
 "API:

   - Crypto self tests can now be disabled at boot/run time.
   - Add async support to algif_aead.

  Algorithms:

   - A large number of fixes to MPI from Nicolai Stange.
   - Performance improvement for HMAC DRBG.

  Drivers:

   - Use generic crypto engine in omap-des.
   - Merge ppc4xx-rng and crypto4xx drivers.
   - Fix lockups in sun4i-ss driver by disabling IRQs.
   - Add DMA engine support to ccp.
   - Reenable talitos hash algorithms.
   - Add support for Hisilicon SoC RNG.
   - Add basic crypto driver for the MXC SCC.

  Others:

   - Do not allocate crypto hash tfm in NORECLAIM context in ecryptfs"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (77 commits)
  crypto: qat - change the adf_ctl_stop_devices to void
  crypto: caam - fix caam_jr_alloc() ret code
  crypto: vmx - comply with ABIs that specify vrsave as reserved.
  crypto: testmgr - Add a flag allowing the self-tests to be disabled at runtime.
  crypto: ccp - constify ccp_actions structure
  crypto: marvell/cesa - Use dma_pool_zalloc
  crypto: qat - make adf_vf_isr.c dependant on IOV config
  crypto: qat - Fix typo in comments
  lib: asn1_decoder - add MODULE_LICENSE("GPL")
  crypto: omap-sham - Use dma_request_chan() for requesting DMA channel
  crypto: omap-des - Use dma_request_chan() for requesting DMA channel
  crypto: omap-aes - Use dma_request_chan() for requesting DMA channel
  crypto: omap-des - Integrate with the crypto engine framework
  crypto: s5p-sss - fix incorrect usage of scatterlists api
  crypto: s5p-sss - Fix missed interrupts when working with 8 kB blocks
  crypto: s5p-sss - Use common BIT macro
  crypto: mxc-scc - fix unwinding in mxc_scc_crypto_register()
  crypto: mxc-scc - signedness bugs in mxc_scc_ablkcipher_req_init()
  crypto: talitos - fix ahash algorithms registration
  crypto: ccp - Ensure all dependencies are specified
  ...

Backmerge to resolve a conflict in ovl_lookup_real();
"ovl_lookup_real(): use lookup_one_len_unlocked()" instead,
but it was too late in the cycle to rebase.

Merge tag 'device-properties-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull device properties update from Rafael Wysocki:
 "Generic device properties framework update.

  Just one commit reworking the handling of built-in properties
  initialization and updating a few drivers in accordance with the core
  framework changes"

* tag 'device-properties-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  device property: don't bother the drivers with struct property_set

Pull ACPI updates from Rafael Wysocki:
 "The new features here are ACPI 6.1 support (and some previously
  missing bits of ACPI 6.0 support) in ACPICA and two new drivers, a
  driver for the ACPI Generic Event Device (GED) feature introduced by
  ACPI 6.1 and the INT3406 thermal driver for display thermal
  management.  Also the value returned by the _HRV (hardware revision)
  ACPI object will be exported to user space via sysfs now.

  In addition to that, ACPI on ARM64 will not depend on EXPERT any more.

  The rest is mostly fixes and cleanups and some code reorganization.

  Specifics:

   - In-kernel ACPICA code update to the upstream release 20160422
     adding support for ACPI 6.1 along with some previously missing bits
     of ACPI 6.0 support, making a fair amount of fixes and cleanups and
     reducing divergences between the upstream ACPICA and the in-kernel
     code (Bob Moore, Lv Zheng, Al Stone, Aleksey Makarov, Will Miles)

   - ACPI Generic Event Device (GED) support and a fix for it (Sinan
     Kaya, Paul Gortmaker)

   - INT3406 thermal driver for display thermal management and ACPI
     backlight support code reorganization related to it (Aaron Lu, Arnd
     Bergmann)

   - Support for exporting the value returned by the _HRV (hardware
     revision) ACPI object via sysfs (Betty Dall)

   - Removal of the EXPERT dependency for ACPI on ARM64 (Mark Brown)

   - Rework of the handling of ACPI _OSI mechanism allowing the
     _OSI("Darwin") support to be overridden from the kernel command
     line among other things (Lv Zheng, Chen Yu)

   - Rework of the ACPI tables override mechanism to prepare it for the
     introduction of overlays support going forward (Lv Zheng, Rafael
     Wysocki)

   - Fixes related to the ECDT support and module-level execution of AML
     (Lv Zheng)

   - ACPI PCI interrupts management update to make it work better on
     ARM64 mostly (Sinan Kaya)

   - ACPI SRAT handling update to make the code process all entires in
     the table order regardless of the entry type (Lukasz Anaczkowski)

   - EFI power off support for full-hardware ACPI platforms that don't
     support ACPI S5 (Chen Yu)

   - Fixes and cleanups related to the ACPI core's sysfs interface (Dan
     Carpenter, Betty Dall)

   - acpi_dev_present() API rework to reduce possible confusion related
     to it (Lukas Wunner)

   - Removal of CLK_IS_ROOT from two ACPI drivers (Stephen Boyd)"

* tag 'acpi-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (82 commits)
  ACPI / video: mark acpi_video_get_levels() inline
  Thermal / ACPI / video: add INT3406 thermal driver
  ACPI / GED: make evged.c explicitly non-modular
  ACPI / tables: Fix DSDT override mechanism
  ACPI / sysfs: fix error code in get_status()
  ACPICA: Update version to 20160422
  ACPICA: Move all ASCII utilities to a common file
  ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support for acpi_hw_write()
  ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support in acpi_hw_read()
  ACPICA: Executer: Introduce a set of macros to handle bit width mask generation
  ACPICA: Hardware: Add optimized access bit width support
  ACPICA: Utilities: Add ACPI_IS_ALIGNED() macro
  ACPICA: Renamed some #defined flag constants for clarity
  ACPICA: ACPI 6.0, tools/iasl: Add support for new resource descriptors
  ACPICA: ACPI 6.0: Update _BIX support for new package element
  ACPICA: ACPI 6.1: Support for new PCCT subtable
  ACPICA: Refactor evaluate_object to reduce nesting
  ACPICA: Divergence: remove unwanted spaces for typedef
  ACPI,PCI,IRQ: remove SCI penalize function
  ACPI,PCI,IRQ: remove redundant code in acpi_irq_penalty_init()
  ..

Pull power management updates from Rafael Wysocki:
 "The majority of changes go into the cpufreq subsystem this time.

  To me, quite obviously, the biggest ticket item is the new "schedutil"
  governor.  Interestingly enough, it's the first new cpufreq governor
  since the beginning of the git era (except for some out-of-the-tree
  ones).

  There are two main differences between it and the existing governors.
  First, it uses the information provided by the scheduler directly for
  making its decisions, so it doesn't have to track anything by itself.
  Second, it can invoke drivers (supporting that feature) to adjust CPU
  performance right away without having to spawn work items to be
  executed in process context or similar.  Currently, the acpi-cpufreq
  driver is the only one supporting that mode of operation, but then it
  is used on a large number of systems.

  The "schedutil" governor as included here is very simple and mostly
  regarded as a foundation for future work on the integration of the
  scheduler with CPU power management (in fact, there is work in
  progress on top of it already).  Nevertheless it works and the
  preliminary results obtained with it are encouraging.

  There also is some consolidation of CPU frequency management for ARM
  platforms that can add their machine IDs the the new stub dt-platdev
  driver now and that will take care of creating the requisite platform
  device for cpufreq-dt, so it is not necessary to do that in platform
  code any more.  Several ARM platforms are switched over to using this
  generic mechanism.

  In addition to that, the intel_pstate driver is now going to respect
  CPU frequency limits set by the platform firmware (or a BMC) and
  provided via the ACPI _PPC object.

  The devfreq subsystem is getting a new "passive" governor for SoCs
  subsystems that will depend on somebody else to manage their voltage
  rails and its support for Samsung Exynos SoCs is consolidated.

  The rest is support for new hardware (Intel Broxton support in
  intel_idle for one example), bug fixes, optimizations and cleanups in
  a number of places.

  Specifics:

   - New cpufreq "schedutil" governor (making decisions based on CPU
     utilization information provided by the scheduler and capable of
     switching CPU frequencies right away if the underlying driver
     supports that) and support for fast frequency switching in the
     acpi-cpufreq driver (Rafael Wysocki)

   - Consolidation of CPU frequency management on ARM platforms allowing
     them to get rid of some platform-specific boilerplate code if they
     are going to use the cpufreq-dt driver (Viresh Kumar, Finley Xiao,
     Marc Gonzalez)

   - Support for ACPI _PPC and CPU frequency limits in the intel_pstate
     driver (Srinivas Pandruvada)

   - Fixes and cleanups in the cpufreq core and generic governor code
     (Rafael Wysocki, Sai Gurrappadi)

   - intel_pstate driver optimizations and cleanups (Rafael Wysocki,
     Philippe Longepe, Chen Yu, Joe Perches)

   - cpufreq powernv driver fixes and cleanups (Akshay Adiga, Shilpasri
     Bhat)

   - cpufreq qoriq driver fixes and cleanups (Jia Hongtao)

   - ACPI cpufreq driver cleanups (Viresh Kumar)

   - Assorted cpufreq driver updates (Ashwin Chaugule, Geliang Tang,
     Javier Martinez Canillas, Paul Gortmaker, Sudeep Holla)

   - Assorted cpufreq fixes and cleanups (Joe Perches, Arnd Bergmann)

   - Fixes and cleanups in the OPP (Operating Performance Points)
     framework, mostly related to OPP sharing, and reorganization of
     OF-dependent code in it (Viresh Kumar, Arnd Bergmann, Sudeep Holla)

   - New "passive" governor for devfreq (for SoC subsystems that will
     rely on someone else for the management of their power resources)
     and consolidation of devfreq support for Exynos platforms, coding
     style and typo fixes for devfreq (Chanwoo Choi, MyungJoo Ham)

   - PM core fixes and cleanups, mostly to make it work better with the
     generic power domains (genpd) framework, and updates for that
     framework (Ulf Hansson, Thierry Reding, Colin Ian King)

   - Intel Broxton support for the intel_idle driver (Len Brown)

   - cpuidle core optimization and fix (Daniel Lezcano, Dave Gerlach)

   - ARM cpuidle cleanups (Jisheng Zhang)

   - Intel Kabylake support for the RAPL power capping driver (Jacob
     Pan)

   - AVS (Adaptive Voltage Switching) rockchip-io driver update (Heiko
     Stuebner)

   - Updates for the cpupower tool (Arjun Sreedharan, Colin Ian King,
     Mattia Dongili, Thomas Renninger)"

* tag 'pm-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (112 commits)
  intel_pstate: Clean up get_target_pstate_use_performance()
  intel_pstate: Use sample.core_avg_perf in get_avg_pstate()
  intel_pstate: Clarify average performance computation
  intel_pstate: Avoid unnecessary synchronize_sched() during initialization
  cpufreq: schedutil: Make default depend on CONFIG_SMP
  cpufreq: powernv: del_timer_sync when global and local pstate are equal
  cpufreq: powernv: Move smp_call_function_any() out of irq safe block
  intel_pstate: Clean up intel_pstate_get()
  cpufreq: schedutil: Make it depend on CONFIG_SMP
  cpufreq: governor: Fix handling of special cases in dbs_update()
  PM / OPP: Move CONFIG_OF dependent code in a separate file
  cpufreq: intel_pstate: Ignore _PPC processing under HWP
  cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table
  PM / OPP: add non-OF versions of dev_pm_opp_{cpumask_, }remove_table
  cpufreq: tango: Use generic platdev driver
  PM / OPP: pass cpumask by reference
  cpufreq: Fix GOV_LIMITS handling for the userspace governor
  cpupower: fix potential memory leak
  PM / devfreq: style/typo fixes
  PM / devfreq: exynos: Add the detailed correlation for Exynos5422 bus
  ..

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Add TRACE support to be able to debug request flow
   - Extend/improve reset support for (e)MMC
   - Convert MMC pwrseq to platform device drivers
   - Use IDA for indexes
   - Some additional minor improvements

  MMC host:
   - sdhci: Re-factoring, clean-ups and improvements
   - sdhci-acpi|pci: Use MMC_CAP_AGGRESSIVE_PM for Broxton
   - omap/omap_hsmmc: Convert to use dma_request_chan()
   - usdhi6rol0: Add support for UHS modes
   - sh_mmcif: Update runtime PM support
   - tmio: Wolfram Sang steps in as maintainer
   - tmio: Add UHS-I mode support
   - sh_mobile_sdhi: Add UHS-I mode support
   - tmio/sdhi: Re-factoring, clean-ups and improvements
   - dw_mmc: Re-factoring and clean-ups
   - davinci: Convert to use dma_request_chan()"

* tag 'mmc-v4.7' of git://git.linaro.org/people/ulf.hansson/mmc: (99 commits)
  mmc: mmc: Fix partition switch timeout for some eMMCs
  mmc: sh_mobile_sdhi: enable SDIO IRQs for RCar Gen3
  mmc: sdio: fall back to SDIO 1.0 for broken 1.1 cards
  mmc: sdhci-st: correct name of sd-uhs-sdr50 property
  MAINTAINERS: update entry for TMIO MMC driver
  mmc: block: improve logging of handling emmc timeouts
  mmc: sdhci: removed unneeded function wrappers
  mmc: core: remove the invalid message in mmc_select_timing
  mmc: core: fix using wrong io voltage if mmc_select_hs200 fails
  mmc: sdhci-of-arasan: fix set_clock when a phy is supported
  mmc: omap: Use dma_request_chan() for requesting DMA channel
  mmc: mmc: Attempt to flush cache before reset
  mmc: sh_mobile_sdhi: check return value when changing clk
  mmc: sh_mobile_sdhi: only change the clock on RCar Gen2+
  mmc: tmio/sdhi: introduce flag for RCar 2+ specific features
  mmc: sh_mobile_sdhi: make clk_update function more compact
  mmc: omap_hsmmc: Use dma_request_chan() for requesting DMA channel
  mmc: sdhci-of-at91: add presets setup
  mmc: usdhi6rol0: add pinctrl to set pin drive strength
  mmc: usdhi6rol0: add support for UHS modes
  ...

Pull regulator updates from Mark Brown:
 "A few core enhancements to deal with some of the slightly more
  complicated edge cases that have started cropping up in systems, both
  new ones and old ones that people started worrying about upstream, but
  otherwise a quiet release for the regulator API:

   - When applying constraints at system image if we have a voltage
     range specified and the regulator is currently configured outside
     the bounds of that range bring the regulator to the nearest end of
     the range.

   - When regulators are in non-regulating bypass modes make sure that
     we always use the voltage from the parent regulator.

   - Support for LP873x, PV88080, PM8894 and FAN53555 chips"

* tag 'regulator-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (71 commits)
  regulator: rk808: Migrate to regulator core's simplified DT parsing code
  regulator: lp873x: Add support for lp873x PMIC regulators
  regulator: tps65917/palmas: Simplify multiple dereference of match->of_node
  regulator: tps65917/palmas: Handle possible memory allocation failure
  regulator: tps65917/palmas: Simplify multiple dereference of pdata->reg_init[idx]
  regulator: tps65917/palmas: Simplify multiple dereference of ddata->palmas_matches[idx]
  regulator: pwm: Use pwm_get_args() where appropriate
  pwm: Introduce the pwm_args concept
  regulator: max77686: Configure enable time to properly handle regulator enable
  regulator: rk808: Add rk808_reg_ops_ranges for LDO3
  regulator: core: Add early supply resolution for regulators
  regulator: axp20x: Fix axp22x ldo_io voltage ranges
  regulator: tps65917/palmas: Add bypass "On" value
  regulator: rk808: remove unused rk808_reg_ops_ranges
  regulator: refactor valid_ops_mask checking code
  regulator: rk808: remove linear range definitions with a single range
  regulator: max77620: Add support for device specific ramp rate setting
  regulator: max77620: Add details of device specific ramp rate setting
  regulator: helpers: Ensure bypass register field matches ON value
  regulator: core: Move registration of regulator device
  ...

Pull regmap updates from Mark Brown:
 "The updates for this kernel release really are trivial:

   - Check that max_register is set for the flat cache to avoid a crash
     on initialization

   - Fix a typo in the documentation"

* tag 'regmap-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regcache: flat: Require max_registers to be set
  regmap: cache: Fix typo in cache_bypass parameter description

Pull IPMI updates from Corey Minyard:
 "Some small fixes and cleanups, these latest have been in linux-next
  for a few weeks"

* tag 'for-linus-4.7' of git://git.code.sf.net/p/openipmi/linux-ipmi:
  ipmi: Fix the I2C address extraction from SPMI tables
  IPMI: reserve memio regions separately
  ipmi: Fix some minor coding style issues

Merge tag 'hwmon-for-linus-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:

 - major rework of it87 driver: cleanup, added support for additional
   attributes, added support for two chips in the system, added support
   for IT8728E

 - fam17h_power driver now reports accumulated power consumption

 - new driver for MAX31722/MAX31723 temperature sensors

 - minor fixes to sch5636 and ads7828 drivers

* tag 'hwmon-for-linus-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (35 commits)
  hwmon: (sch5636) trivial fix of spelling mistake on revision
  hwmon: (it87) Add support for IT8628E
  hwmon: (it87) Fix pwm_temp_map for system with 6 pwm channels
  hwmon: (it87) Support automatic pwm control on newer chips
  hwmon: (it87) Enhance validation for fan4 and fan5
  hwmon: (it87) Support disabling fan control for all pwm control and chips
  hwmon: (it87) Formatting cleanup
  hwmon: (it87) Use defines for array sizes and sensor counts
  hwmon: (it87) Use BIT macro
  hwmon: (it87) Add support for VIN7 to VIN10 on IT8620E
  hwmon: (it87) Simplify reading voltage registers
  hwmon: (it87) Support up to 6 temperature sensors on IT8620E
  hwmon: (it87) Convert to use new hwmon API
  hwmon: (it87) Use single group and is_visible for miscellaneous attributes
  hwmon: (it87) Use is_visible for pwm attributes
  hwmon: (it87) Use is_visible for fan attributes
  hwmon: (it87) Use is_visible for temperature sensors
  hwmon: (it87) Use is_visible for voltage sensors
  hwmon: (it87) Rearrange code to avoid forward declarations
  hwmon: (it87) Add support for second Super-IO chip
  ...

Pull EDAC updates from Borislav Petkov:
 "It was pretty busy in EDAC land this time:

   - Altera Arria10 L2 cache and On-Chip RAM ECC handling (Thor Thayer)

   - Remove ad-hoc buffering of MCE records in sb_edac and i7core_edac
     (Tony Luck)

   - Do not register sb_edac with pci_register_driver() (Tony Luck)

   - Add support for Skylake to ie31200_edac (Jason Baron)

   - Do not register amd64_edac with pci_register_driver() (Borislav
     Petkov)

  ... plus the usual round of cleanups and fixes all over the place"

* tag 'edac_for_4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: (25 commits)
  EDAC, amd64_edac: Drop pci_register_driver() use
  EDAC, ie31200_edac: Add Skylake support
  EDAC, sb_edac: Use cpu family/model in driver detection
  EDAC, i7core: Remove double buffering of error records
  EDAC, amd64_edac: Issue driver banner only on success
  ARM: socfpga: Initialize Arria10 OCRAM ECC on startup
  EDAC: Increment correct counter in edac_inc_ue_error()
  EDAC, sb_edac: Remove double buffering of error records
  EDAC: Fix used after kfree() error in edac_unregister_sysfs()
  EDAC, altera: Avoid unused function warnings
  EDAC, altera: Remove useless casts
  ARM: socfpga: Enable Arria10 OCRAM ECC on startup
  EDAC, altera: Add Arria10 OCRAM ECC support
  Documentation: dt: socfpga: Add Altera Arria10 OCRAM binding
  EDAC, altera: Make OCRAM ECC dependency check generic
  EDAC, altera: Add register offset for ECC Enable
  EDAC, altera: Extract error inject operations to a struct fops
  ARM: socfpga: Enable Arria10 L2 cache ECC on startup
  EDAC, altera: Add Arria10 L2 Cache ECC handling
  Documentation, dt, socfpga: Add Altera Arria10 L2 cache binding
  ...

Pull LED updates from Jacek Anaszewski:
 "In this merge cycle we had an interaction with MTD subsystem, that
  included converting drivers/mtd/nand/nand_base.c to use newly
  introduced MTD (NAND/NOR) LED trigger instead of implementing it on
  its own.

  Related MTD patches are intended to be merged through the LED tree,
  before MTD tree is merged, since further MTD development is based on
  those modifications.

  Summary:

  LEDs:
   - Introduce a kernel panic LED trigger

   - Introduce a MTD (NAND/NOR) trigger

   - led-tca6507: silence an uninitialized variable warning

   - ledtrig-ide-disk: Move ide_blink_delay to ledtrig_ide_activity()

   - leds-ss4200: Add depend on x86 arch

   - leds-ss4200: add DMI data for FSC SCALEO Home Server

   - leds-triggers: Allow to switch the trigger to "panic" on a kernel panic

   - devicetree: leds: Introduce "panic-indicator" optional property

   - leds-gpio: Support the "panic-indicator" firmware property

  MTD:
   - Uninline mtd_write_oob and move it to mtdcore.c

   - Remove the "nand-disk" LED trigger

   - Hook I/O activity to the MTD LED trigger"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  leds: gpio: Support the "panic-indicator" firmware property
  devicetree: leds: Introduce "panic-indicator" optional property
  leds: triggers: Allow to switch the trigger to "panic" on a kernel panic
  leds: ss4200: add DMI data for FSC SCALEO Home Server
  leds: ss4200: Add depend on x86 arch
  leds: ledtrig-ide-disk: Move ide_blink_delay to ledtrig_ide_activity()
  leds: tca6507: silence an uninitialized variable warning
  mtd: Hook I/O activity to the MTD LED trigger
  mtd: nand: Remove the "nand-disk" LED trigger
  leds: trigger: Introduce a MTD (NAND/NOR) trigger
  mtd: Uninline mtd_write_oob and move it to mtdcore.c
  leds: trigger: Introduce a kernel panic LED trigger

Unlike everywhere else in the IPMI specification, the I2C address
specified in the SPMI table is not shifted to the left one bit with
the LSB zero.  Instead it is not shifted with the MSB zero.
Reported-by: Sanjeev <singhsan@codeaurora.org>
Signed-off-by: Corey Minyard <cminyard@mvista.com>

Commit d61a3ead ("[PATCH] IPMI: reserve I/O ports separately")
changed the way I/O ports were reserved and includes this comment in
log:

 Some BIOSes reserve disjoint I/O regions in their ACPI tables for the IPMI
 controller.  This causes problems when trying to register the entire I/O
 region.  Therefore we must register each I/O port separately.

There is a similar problem with memio regions on an arm64 platform
(AMD Seattle). Where I see:

 ipmi message handler version 39.2
 ipmi_si AMDI0300:00: probing via device tree
 ipmi_si AMDI0300:00: ipmi_si: probing via ACPI
 ipmi_si AMDI0300:00: [mem 0xe0010000] regsize 1 spacing 4 irq 23
 ipmi_si: Adding ACPI-specified kcs state machine
 IPMI System Interface driver.
 ipmi_si: Trying ACPI-specified kcs state machine at mem \
          address 0xe0010000, slave address 0x0, irq 23
 ipmi_si: Could not set up I/O space

The problem is that the ACPI core registers disjoint regions for the
platform device:

e0010000-e0010000 : AMDI0300:00
e0010004-e0010004 : AMDI0300:00

and the ipmi_si driver tries to register one region e0010000-e0010004.

Based on a patch from Mark Salter <msalter@redhat.com>, who also wrote
all the above text.
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Tested-by: Mark Salter <msalter@redhat.com>

Signed-off-by: Corey Minyard <cminyard@mvista.com>

Pull arm64 perf updates from Will Deacon:
 "The main addition here is support for Broadcom's Vulcan core using the
  architected ID registers for discovering supported events.

   - Support for the PMU in Broadcom's Vulcan CPU

   - Dynamic event detection using the PMCEIDn_EL0 ID registers"

* tag 'arm64-perf' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: perf: don't expose CHAIN event in sysfs
  arm64/perf: Add Broadcom Vulcan PMU support
  arm64/perf: Filter common events based on PMCEIDn_EL0
  arm64/perf: Access pmu register using <read/write>_sys_reg
  arm64/perf: Define complete ARMv8 recommended implementation defined events
  arm64/perf: Changed events naming as per the ARM ARM
  arm64: dts: Add Broadcom Vulcan PMU in dts
  Documentation: arm64: pmu: Add Broadcom Vulcan PMU binding

Pull arm64 updates from Will Deacon:

 - virt_to_page/page_address optimisations

 - support for NUMA systems described using device-tree

 - support for hibernate/suspend-to-disk

 - proper support for maxcpus= command line parameter

 - detection and graceful handling of AArch64-only CPUs

 - miscellaneous cleanups and non-critical fixes

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (92 commits)
  arm64: do not enforce strict 16 byte alignment to stack pointer
  arm64: kernel: Fix incorrect brk randomization
  arm64: cpuinfo: Missing NULL terminator in compat_hwcap_str
  arm64: secondary_start_kernel: Remove unnecessary barrier
  arm64: Ensure pmd_present() returns false after pmd_mknotpresent()
  arm64: Replace hard-coded values in the pmd/pud_bad() macros
  arm64: Implement pmdp_set_access_flags() for hardware AF/DBM
  arm64: Fix typo in the pmdp_huge_get_and_clear() definition
  arm64: mm: remove unnecessary EXPORT_SYMBOL_GPL
  arm64: always use STRICT_MM_TYPECHECKS
  arm64: kvm: Fix kvm teardown for systems using the extended idmap
  arm64: kaslr: increase randomization granularity
  arm64: kconfig: drop CONFIG_RTC_LIB dependency
  arm64: make ARCH_SUPPORTS_DEBUG_PAGEALLOC depend on !HIBERNATION
  arm64: hibernate: Refuse to hibernate if the boot cpu is offline
  arm64: kernel: Add support for hibernate/suspend-to-disk
  PM / Hibernate: Call flush_icache_range() on pages restored in-place
  arm64: Add new asm macro copy_page
  arm64: Promote KERNEL_START/KERNEL_END definitions to a header file
  arm64: kernel: Include _AC definition in page.h
  ...

Pull m68k updates from Geert Uytterhoeven:
 "Preparatory work for Arnd's genrtc removal series"

* tag 'm68k-for-v4.7-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/mvme16x: Include generic <linux/rtc.h>
  m68k/bvme6000: Include generic <linux/rtc.h>

Pull metag architecture updates from James Hogan:
 "Three minor fixes:

   - removal of stale comment
   - fix build for Meta1 when perf events are enabled
   - fix inline asm constraint in atomics"

* tag 'metag-for-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
  metag: Fix atomic_*_return inline asm constraints
  metag: perf: fix build on Meta1
  metag: ftrace: remove the misleading comment for ftrace_dyn_arch_init

Pull x86 platform updates from Ingo Molnar:
 "The main change is the addition of SGI/UV4 support"

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits)
  x86/platform/UV: Fix incorrect nodes and pnodes for cpuless and memoryless nodes
  x86/platform/UV: Remove Obsolete GRU MMR address translation
  x86/platform/UV: Update physical address conversions for UV4
  x86/platform/UV: Build GAM reference tables
  x86/platform/UV: Support UV4 socket address changes
  x86/platform/UV: Add obtaining GAM Range Table from UV BIOS
  x86/platform/UV: Add UV4 addressing discovery function
  x86/platform/UV: Fold blade info into per node hub info structs
  x86/platform/UV: Allocate common per node hub info structs on local node
  x86/platform/UV: Move blade local processor ID to the per cpu info struct
  x86/platform/UV: Move scir info to the per cpu info struct
  x86/platform/UV: Create per cpu info structs to replace per hub info structs
  x86/platform/UV: Update MMIOH setup function to work for both UV3 and UV4
  x86/platform/UV: Clean up redunduncies after merge of UV4 MMR definitions
  x86/platform/UV: Add UV4 Specific MMR definitions
  x86/platform/UV: Prep for UV4 MMR updates
  x86/platform/UV: Add UV MMR Illegal Access Function
  x86/platform/UV: Add UV4 Specific Defines
  x86/platform/UV: Add UV Architecture Defines
  x86/platform/UV: Add Initial UV4 definitions
  ...

Pull x86 debug cleanup from Ingo Molnar:
 "A printk() output simplification"

* 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/dumpstack: Combine some printk()s

Pull x86 cleanup from Ingo Molnar:
 "Inline optimizations"

* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Fix non-static inlines

Pull x86-64 defconfig update from Ingo Molnar:
 "Small defconfig addition"

[ I'm not actually convinced our defconfig is sensible, but whatever ]

* 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/build/defconfig/64: Enable CONFIG_E1000E=y

Pull x86 boot updates from Ingo Molnar:
 "The biggest changes in this cycle were:

   - prepare for more KASLR related changes, by restructuring, cleaning
     up and fixing the existing boot code.  (Kees Cook, Baoquan He,
     Yinghai Lu)

   - simplifly/concentrate subarch handling code, eliminate
     paravirt_enabled() usage.  (Luis R Rodriguez)"

* 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
  x86/KASLR: Clarify purpose of each get_random_long()
  x86/KASLR: Add virtual address choosing function
  x86/KASLR: Return earliest overlap when avoiding regions
  x86/KASLR: Add 'struct slot_area' to manage random_addr slots
  x86/boot: Add missing file header comments
  x86/KASLR: Initialize mapping_info every time
  x86/boot: Comment what finalize_identity_maps() does
  x86/KASLR: Build identity mappings on demand
  x86/boot: Split out kernel_ident_mapping_init()
  x86/boot: Clean up indenting for asm/boot.h
  x86/KASLR: Improve comments around the mem_avoid[] logic
  x86/boot: Simplify pointer casting in choose_random_location()
  x86/KASLR: Consolidate mem_avoid[] entries
  x86/boot: Clean up pointer casting
  x86/boot: Warn on future overlapping memcpy() use
  x86/boot: Extract error reporting functions
  x86/boot: Correctly bounds-check relocations
  x86/KASLR: Clean up unused code from old 'run_size' and rename it to 'kernel_total_size'
  x86/boot: Fix "run_size" calculation
  x86/boot: Calculate decompression size during boot not build
  ...

Pull x86 asm updates from Ingo Molnar:
 "The main changes in this cycle were:

   - MSR access API fixes and enhancements (Andy Lutomirski)

   - early exception handling improvements (Andy Lutomirski)

   - user-space FS/GS prctl usage fixes and improvements (Andy
     Lutomirski)

   - Remove the cpu_has_*() APIs and replace them with equivalents
     (Borislav Petkov)

   - task switch micro-optimization (Brian Gerst)

   - 32-bit entry code simplification (Denys Vlasenko)

   - enhance PAT handling in enumated CPUs (Toshi Kani)

  ... and lots of other cleanups/fixlets"

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (70 commits)
  x86/arch_prctl/64: Restore accidentally removed put_cpu() in ARCH_SET_GS
  x86/entry/32: Remove asmlinkage_protect()
  x86/entry/32: Remove GET_THREAD_INFO() from entry code
  x86/entry, sched/x86: Don't save/restore EFLAGS on task switch
  x86/asm/entry/32: Simplify pushes of zeroed pt_regs->REGs
  selftests/x86/ldt_gdt: Test set_thread_area() deletion of an active segment
  x86/tls: Synchronize segment registers in set_thread_area()
  x86/asm/64: Rename thread_struct's fs and gs to fsbase and gsbase
  x86/arch_prctl/64: Remove FSBASE/GSBASE < 4G optimization
  x86/segments/64: When load_gs_index fails, clear the base
  x86/segments/64: When loadsegment(fs, ...) fails, clear the base
  x86/asm: Make asm/alternative.h safe from assembly
  x86/asm: Stop depending on ptrace.h in alternative.h
  x86/entry: Rename is_{ia32,x32}_task() to in_{ia32,x32}_syscall()
  x86/asm: Make sure verify_cpu() has a good stack
  x86/extable: Add a comment about early exception handlers
  x86/msr: Set the return value to zero when native_rdmsr_safe() fails
  x86/paravirt: Make "unsafe" MSR accesses unsafe even if PARAVIRT=y
  x86/paravirt: Add paravirt_{read,write}_msr()
  x86/msr: Carry on after a non-"safe" MSR access fails
  ...

Pull scheduler updates from Ingo Molnar:

 - massive CPU hotplug rework (Thomas Gleixner)

 - improve migration fairness (Peter Zijlstra)

 - CPU load calculation updates/cleanups (Yuyang Du)

 - cpufreq updates (Steve Muckle)

 - nohz optimizations (Frederic Weisbecker)

 - switch_mm() micro-optimization on x86 (Andy Lutomirski)

 - ... lots of other enhancements, fixes and cleanups.

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (66 commits)
  ARM: Hide finish_arch_post_lock_switch() from modules
  sched/core: Provide a tsk_nr_cpus_allowed() helper
  sched/core: Use tsk_cpus_allowed() instead of accessing ->cpus_allowed
  sched/loadavg: Fix loadavg artifacts on fully idle and on fully loaded systems
  sched/fair: Correct unit of load_above_capacity
  sched/fair: Clean up scale confusion
  sched/nohz: Fix affine unpinned timers mess
  sched/fair: Fix fairness issue on migration
  sched/core: Kill sched_class::task_waking to clean up the migration logic
  sched/fair: Prepare to fix fairness problems on migration
  sched/fair: Move record_wakee()
  sched/core: Fix comment typo in wake_q_add()
  sched/core: Remove unused variable
  sched: Make hrtick_notifier an explicit call
  sched/fair: Make ilb_notifier an explicit call
  sched/hotplug: Make activate() the last hotplug step
  sched/hotplug: Move migration CPU_DYING to sched_cpu_dying()
  sched/migration: Move CPU_ONLINE into scheduler state
  sched/migration: Move calc_load_migrate() into CPU_DYING
  sched/migration: Move prepare transition to SCHED_STARTING state
  ...

Pull RAS updates from Ingo Molnar:
 "Main changes in this cycle were:

   - AMD MCE/RAS handling updates (Yazen Ghannam, Aravind
     Gopalakrishnan)

   - Cleanups (Borislav Petkov)

   - logging fix (Tony Luck)"

* 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/RAS: Add SMCA support to AMD Error Injector
  EDAC, mce_amd: Detect SMCA using X86_FEATURE_SMCA
  x86/mce: Update AMD mcheck init to use cpu_has() facilities
  x86/cpu: Add detection of AMD RAS Capabilities
  x86/mce/AMD: Save an indentation level in prepare_threshold_block()
  x86/mce/AMD: Disable LogDeferredInMcaStat for SMCA systems
  x86/mce/AMD: Log Deferred Errors using SMCA MCA_DE{STAT,ADDR} registers
  x86/mce: Detect local MCEs properly
  x86/mce: Look in genpool instead of mcelog for pending error records
  x86/mce: Detect and use SMCA-specific msr_ops
  x86/mce: Define vendor-specific MSR accessors
  x86/mce: Carve out writes to MCx_STATUS and MCx_CTL
  x86/mce: Grade uncorrected errors for SMCA-enabled systems
  x86/mce: Log MCEs after a warm rest on AMD, Fam17h and later
  x86/mce: Remove explicit smp_rmb() when starting CPUs sync
  x86/RAS: Rename AMD MCE injector config item

Pull perf updates from Ingo Molnar:
 "Bigger kernel side changes:

   - Add backwards writing capability to the perf ring-buffer code,
     which is preparation for future advanced features like robust
     'overwrite support' and snapshot mode.  (Wang Nan)

   - Add pause and resume ioctls for the perf ringbuffer (Wang Nan)

   - x86 Intel cstate code cleanups and reorgnization (Thomas Gleixner)

   - x86 Intel uncore and CPU PMU driver updates (Kan Liang, Peter
     Zijlstra)

   - x86 AUX (Intel PT) related enhancements and updates (Alexander
     Shishkin)

   - x86 MSR PMU driver enhancements and updates (Huang Rui)

   - ... and lots of other changes spread out over 40+ commits.

  Biggest tooling side changes:

   - 'perf trace' features and enhancements.  (Arnaldo Carvalho de Melo)

   - BPF tooling updates (Wang Nan)

   - 'perf sched' updates (Jiri Olsa)

   - 'perf probe' updates (Masami Hiramatsu)

   - ... plus 200+ other enhancements, fixes and cleanups to tools/

  The merge commits, the shortlog and the changelogs contain a lot more
  details"

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (249 commits)
  perf/core: Disable the event on a truncated AUX record
  perf/x86/intel/pt: Generate PMI in the STOP region as well
  perf buildid-cache: Use lsdir() for looking up buildid caches
  perf symbols: Use lsdir() for the search in kcore cache directory
  perf tools: Use SBUILD_ID_SIZE where applicable
  perf tools: Fix lsdir to set errno correctly
  perf trace: Move seccomp args beautifiers to tools/perf/trace/beauty/
  perf trace: Move flock op beautifier to tools/perf/trace/beauty/
  perf build: Add build-test for debug-frame on arm/arm64
  perf build: Add build-test for libunwind cross-platforms support
  perf script: Fix export of callchains with recursion in db-export
  perf script: Fix callchain addresses in db-export
  perf script: Fix symbol insertion behavior in db-export
  perf symbols: Add dso__insert_symbol function
  perf scripting python: Use Py_FatalError instead of die()
  perf tools: Remove xrealloc and ALLOC_GROW
  perf help: Do not use ALLOC_GROW in add_cmd_list
  perf pmu: Make pmu_formats_string to check return value of strbuf
  perf header: Make topology checkers to check return value of strbuf
  perf tools: Make alias handler to check return value of strbuf
  ...

Pull support for killable rwsems from Ingo Molnar:
 "This, by Michal Hocko, implements down_write_killable().

  The main usecase will be to update mm_sem usage sites to use this new
  API, to allow the mm-reaper introduced in commit aac45363 ("mm,
  oom: introduce oom reaper") to tear down oom victim address spaces
  asynchronously with minimum latencies and without deadlock worries"

[ The vfs will want it too as the inode lock is changed from a mutex to
  a rwsem due to the parallel lookup and readdir updates ]

* 'locking-rwsem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/rwsem: Fix comment on register clobbering
  locking/rwsem: Fix down_write_killable()
  locking/rwsem, x86: Add frame annotation for call_rwsem_down_write_failed_killable()
  locking/rwsem: Provide down_write_killable()
  locking/rwsem, x86: Provide __down_write_killable()
  locking/rwsem, s390: Provide __down_write_killable()
  locking/rwsem, ia64: Provide __down_write_killable()
  locking/rwsem, alpha: Provide __down_write_killable()
  locking/rwsem: Introduce basis for down_write_killable()
  locking/rwsem, sparc: Drop superfluous arch specific implementation
  locking/rwsem, sh: Drop superfluous arch specific implementation
  locking/rwsem, xtensa: Drop superfluous arch specific implementation
  locking/rwsem: Drop explicit memory barriers
  locking/rwsem: Get rid of __down_write_nested()

Pull locking changes from Ingo Molnar:
 "The main changes in this cycle were:

   - pvqspinlock statistics fixes (Davidlohr Bueso)

   - flip atomic_fetch_or() arguments (Peter Zijlstra)

   - locktorture simplification (Paul E.  McKenney)

   - documentation updates (SeongJae Park, David Howells, Davidlohr
     Bueso, Paul E McKenney, Peter Zijlstra, Will Deacon)

   - various fixes"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/atomics: Flip atomic_fetch_or() arguments
  locking/pvqspinlock: Robustify init_qspinlock_stat()
  locking/pvqspinlock: Avoid double resetting of stats
  lcoking/locktorture: Simplify the torture_runnable computation
  locking/Documentation: Clarify that ACQUIRE applies to loads, RELEASE applies to stores
  locking/Documentation: State purpose of memory-barriers.txt
  locking/Documentation: Add disclaimer
  locking/Documentation/lockdep: Fix spelling mistakes
  locking/lockdep: Deinline register_lock_class(), save 2328 bytes
  locking/locktorture: Fix NULL pointer dereference for cleanup paths
  locking/locktorture: Fix deboosting NULL pointer dereference
  locking/Documentation: Mention smp_cond_acquire()
  locking/Documentation: Insert white spaces consistently
  locking/Documentation: Fix formatting inconsistencies
  locking/Documentation: Add missed subsection in TOC
  locking/Documentation: Fix missed s/lock/acquire renames
  locking/Documentation: Clarify relationship of barrier() to control dependencies

Pull EFI updates from Ingo Molnar:
 "The main changes in this cycle were:

   - Drop the unused EFI_SYSTEM_TABLES efi.flags bit and ensure the
     ARM/arm64 EFI System Table mapping is read-only (Ard Biesheuvel)

   - Add a comment to explain that one of the code paths in the x86/pat
     code is only executed for EFI boot (Matt Fleming)

   - Improve Secure Boot status checks on arm64 and handle unexpected
     errors (Linn Crosetto)

   - Remove the global EFI memory map variable 'memmap' as the same
     information is already available in efi::memmap (Matt Fleming)

   - Add EFI Memory Attribute table support for ARM/arm64 (Ard
     Biesheuvel)

   - Add EFI GOP framebuffer support for ARM/arm64 (Ard Biesheuvel)

   - Add EFI Bootloader Control driver for storing reboot(2) data in EFI
     variables for consumption by bootloaders (Jeremy Compostella)

   - Add Core EFI capsule support (Matt Fleming)

   - Add EFI capsule char driver (Kweh, Hock Leong)

   - Unify EFI memory map code for ARM and arm64 (Ard Biesheuvel)

   - Add generic EFI support for detecting when firmware corrupts CPU
     status register bits (like IRQ flags) when performing EFI runtime
     service calls (Mark Rutland)

  ... and other misc cleanups"

* 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (46 commits)
  efivarfs: Make efivarfs_file_ioctl() static
  efi: Merge boolean flag arguments
  efi/capsule: Move 'capsule' to the stack in efi_capsule_supported()
  efibc: Fix excessive stack footprint warning
  efi/capsule: Make efi_capsule_pending() lockless
  efi: Remove unnecessary (and buggy) .memmap initialization from the Xen EFI driver
  efi/runtime-wrappers: Remove ARCH_EFI_IRQ_FLAGS_MASK #ifdef
  x86/efi: Enable runtime call flag checking
  arm/efi: Enable runtime call flag checking
  arm64/efi: Enable runtime call flag checking
  efi/runtime-wrappers: Detect firmware IRQ flag corruption
  efi/runtime-wrappers: Remove redundant #ifdefs
  x86/efi: Move to generic {__,}efi_call_virt()
  arm/efi: Move to generic {__,}efi_call_virt()
  arm64/efi: Move to generic {__,}efi_call_virt()
  efi/runtime-wrappers: Add {__,}efi_call_virt() templates
  efi/arm-init: Reserve rather than unmap the memory map for ARM as well
  efi: Add misc char driver interface to update EFI firmware
  x86/efi: Force EFI reboot to process pending capsules
  efi: Add 'capsule' update support
  ...

Pull core signal updates from Ingo Molnar:
 "These updates from Stas Sergeev and Andy Lutomirski, improve the
  sigaltstack interface by extending its ABI with the SS_AUTODISARM
  feature, which makes it possible to use swapcontext() in a sighandler
  that works on sigaltstack.  Without this flag, the subsequent signal
  will corrupt the state of the switched-away sighandler.

  The inspiration is more robust dosemu signal handling"

* 'core-signals-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  signals/sigaltstack: Change SS_AUTODISARM to (1U << 31)
  signals/sigaltstack: Report current flag bits in sigaltstack()
  selftests/sigaltstack: Fix the sigaltstack test on old kernels
  signals/sigaltstack: If SS_AUTODISARM, bypass on_sig_stack()
  selftests/sigaltstack: Add new testcase for sigaltstack(SS_ONSTACK|SS_AUTODISARM)
  signals/sigaltstack: Implement SS_AUTODISARM flag
  signals/sigaltstack: Prepare to add new SS_xxx flags
  signals/sigaltstack, x86/signals: Unify the x86 sigaltstack check with other architectures

Pull RCU updates from Ingo Molnar:
 "The main changes are:

   - Documentation updates, including fixes to the design-level
     requirements documentation and a fixed version of the design-level
     data-structure documentation.  These fixes include removing
     cartoons and getting rid of the html/htmlx duplication.

   - Further improvements to the new-age expedited grace periods.

   - Miscellaneous fixes.

   - Torture-test changes, including a new rcuperf module for measuring
     RCU grace-period performance and scalability, which is useful for
     the expedited-grace-period changes"

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (56 commits)
  rcutorture: Add boot-time adjustment of leaf fanout
  rcutorture: Add irqs-disabled test for call_rcu()
  rcutorture: Dump trace buffer upon shutdown
  rcutorture: Don't rebuild identical kernel
  rcutorture: Add OS-jitter capability
  documentation: Add documentation for RCU's major data structures
  rcutorture: Convert test duration to seconds early
  torture: Kill qemu, not parent process
  torture: Clarify refusal to run more than one torture test
  rcutorture: Consider FROZEN hotplug notifier transitions
  rcutorture: Remove redundant initialization to zero
  rcuperf: Do not wake up shutdown wait queue if "shutdown" is false.
  rcutorture: Add largish-system rcuperf scenario
  rcutorture: Avoid RCU CPU stall warning and RT throttling
  rcutorture: Add rcuperf holdoff boot parameter to reduce interference
  rcutorture: Make scripts analyze rcuperf trace data, if present
  rcutorture: Make rcuperf collect expedited event-trace data
  rcutorture: Print measure of batching efficiency
  rcutorture: Set rcuperf writer kthreads to real-time priority
  rcutorture: Bind rcuperf reader/writer kthreads to CPUs
  ...

Pull core/lib update from Ingo Molnar:
 "This contains a single commit that removes an unused facility that the
  scheduler used to make use of"

* 'core-lib-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  lib/proportions: Remove unused code