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2015-09-24PCI: rcar: Add R8A7794 supportSergei Shtylyov1-1/+2
Add Renesas R8A7794 SoC support to the Renesas R-Car gen2 PCI driver. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Bjorn Helgaas <helgaas@kernel.org> Acked-by: Simon Horman <horms+renesas@verge.net.au>
2015-09-11Merge branch 'for-linus' of ↵Linus Torvalds2-0/+72
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull more input updates from Dmitry Torokhov: "Second round of updates for the input subsystem. This introduces two brand new touchscreen drivers (Colibri and imx6ul_tsc), some small driver fixes, and we are no longer report errors from evdev_flush() as users do not really have a way of handling errors, error codes that we were returning were not on the list of errors supposed to be returned by close(), and errors were causing issues with one of older versions of systemd" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: imx_keypad - remove obsolete comment Input: touchscreen - add imx6ul_tsc driver support Input: Add touchscreen support for Colibri VF50 Input: i8042 - lower log level for "no controller" message Input: evdev - do not report errors form flush() Input: elants_i2c - extend the calibration timeout to 12 seconds Input: sparcspkr - fix module autoload for OF platform drivers Input: regulator-haptic - fix module autoload for OF platform driver Input: pwm-beeper - fix module autoload for OF platform driver Input: ab8500-ponkey - Fix module autoload for OF platform driver Input: cyttsp - remove unnecessary MODULE_ALIAS() Input: elan_i2c - add ACPI ID "ELAN1000"
2015-09-11Merge branch 'next' of ↵Linus Torvalds1-0/+6
git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux Pull thermal updates from Zhang Rui: - use int instead of unsigned long to represent temperature to avoid bogus overheat detection when negative temperature reported. From Sascha Hauer. - export available thermal governors information to user space via sysfs. From Wei Ni. - introduce new thermal driver for Wildcat Point platform controller hub, which uses PCH thermal sensor and associated critical and hot trip points. From Tushar Dave. - add suuport for Intel Skylake and Denlow platforms in powerclamp driver. - some small cleanups in thermal core. * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: thermal: Add Intel PCH thermal driver thermal: Add comment explaining test for critical temperature thermal: Use IS_ENABLED instead of #ifdef thermal: remove unnecessary call to thermal_zone_device_set_polling thermal: trivial: fix typo in comment thermal: consistently use int for temperatures thermal: add available policies sysfs attribute thermal/powerclamp: add cpu id for denlow platform thermal/powerclamp: add cpu id for Skylake u/y thermal/powerclamp: add cpu id for skylake h/s
2015-09-11Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds3-5/+71
Pull watchdog updates from Wim Van Sebroeck: - new driver for NXP LPC18xx Watchdog Timer - new driver for SAMA5D4 watchdog timer - add support for MCP79 to nv_tco driver - clean-up and improvement of the mpc8xxx watchdog driver - improvements to gpio-wdt - at91sam9_wdt clock improvements ... and other small fixes and improvements * git://www.linux-watchdog.org/linux-watchdog: (25 commits) Watchdog: Fix parent of watchdog_devices watchdog: at91rm9200: Correct check for syscon_node_to_regmap() errors watchdog: at91sam9: get and use slow clock Documentation: dt: binding: atmel-sama5d4-wdt: for SAMA5D4 watchdog driver watchdog: add a driver to support SAMA5D4 watchdog timer watchdog: mpc8xxx: allow to compile for MPC512x watchdog: mpc8xxx: use better error code when watchdog cannot be enabled watchdog: mpc8xxx: use dynamic memory for device specific data watchdog: mpc8xxx: use devm_ioremap_resource to map memory watchdog: mpc8xxx: make use of of_device_get_match_data watchdog: mpc8xxx: simplify registration watchdog: mpc8xxx: remove dead code watchdog: lpc18xx_wdt_get_timeleft() can be static DT: watchdog: Add NXP LPC18xx Watchdog Timer binding documentation watchdog: NXP LPC18xx Watchdog Timer Driver watchdog: gpio-wdt: ping already at startup for always running devices watchdog: gpio-wdt: be more strict about hw_algo matching Documentation: watchdog: at91sam9_wdt: add clocks property watchdog: booke_wdt: Use infrastructure to check timeout limits watchdog: (nv_tco) add support for MCP79 ...
2015-09-11Merge branch 'next' into for-linusDmitry Torokhov2-0/+72
Prepare second round of input updates for 4.3 merge window.
2015-09-10Merge branch 'for-4.3/blkcg' of git://git.kernel.dk/linux-blockLinus Torvalds2-22/+63
Pull blk-cg updates from Jens Axboe: "A bit later in the cycle, but this has been in the block tree for a a while. This is basically four patchsets from Tejun, that improve our buffered cgroup writeback. It was dependent on the other cgroup changes, but they went in earlier in this cycle. Series 1 is set of 5 patches that has cgroup writeback updates: - bdi_writeback iteration fix which could lead to some wb's being skipped or repeated during e.g. sync under memory pressure. - Simplification of wb work wait mechanism. - Writeback tracepoints updated to report cgroup. Series 2 is is a set of updates for the CFQ cgroup writeback handling: cfq has always charged all async IOs to the root cgroup. It didn't have much choice as writeback didn't know about cgroups and there was no way to tell who to blame for a given writeback IO. writeback finally grew support for cgroups and now tags each writeback IO with the appropriate cgroup to charge it against. This patchset updates cfq so that it follows the blkcg each bio is tagged with. Async cfq_queues are now shared across cfq_group, which is per-cgroup, instead of per-request_queue cfq_data. This makes all IOs follow the weight based IO resource distribution implemented by cfq. - Switched from GFP_ATOMIC to GFP_NOWAIT as suggested by Jeff. - Other misc review points addressed, acks added and rebased. Series 3 is the blkcg policy cleanup patches: This patchset contains assorted cleanups for blkcg_policy methods and blk[c]g_policy_data handling. - alloc/free added for blkg_policy_data. exit dropped. - alloc/free added for blkcg_policy_data. - blk-throttle's async percpu allocation is replaced with direct allocation. - all methods now take blk[c]g_policy_data instead of blkcg_gq or blkcg. And finally, series 4 is a set of patches cleaning up the blkcg stats handling: blkcg's stats have always been somwhat of a mess. This patchset tries to improve the situation a bit. - The following patches added to consolidate blkcg entry point and blkg creation. This is in itself is an improvement and helps colllecting common stats on bio issue. - per-blkg stats now accounted on bio issue rather than request completion so that bio based and request based drivers can behave the same way. The issue was spotted by Vivek. - cfq-iosched implements custom recursive stats and blk-throttle implements custom per-cpu stats. This patchset make blkcg core support both by default. - cfq-iosched and blk-throttle keep track of the same stats multiple times. Unify them" * 'for-4.3/blkcg' of git://git.kernel.dk/linux-block: (45 commits) blkcg: use CGROUP_WEIGHT_* scale for io.weight on the unified hierarchy blkcg: s/CFQ_WEIGHT_*/CFQ_WEIGHT_LEGACY_*/ blkcg: implement interface for the unified hierarchy blkcg: misc preparations for unified hierarchy interface blkcg: separate out tg_conf_updated() from tg_set_conf() blkcg: move body parsing from blkg_conf_prep() to its callers blkcg: mark existing cftypes as legacy blkcg: rename subsystem name from blkio to io blkcg: refine error codes returned during blkcg configuration blkcg: remove unnecessary NULL checks from __cfqg_set_weight_device() blkcg: reduce stack usage of blkg_rwstat_recursive_sum() blkcg: remove cfqg_stats->sectors blkcg: move io_service_bytes and io_serviced stats into blkcg_gq blkcg: make blkg_[rw]stat_recursive_sum() to be able to index into blkcg_gq blkcg: make blkcg_[rw]stat per-cpu blkcg: add blkg_[rw]stat->aux_cnt and replace cfq_group->dead_stats with it blkcg: consolidate blkg creation in blkcg_bio_issue_check() blk-throttle: improve queue bypass handling blkcg: move root blkg lookup optimization from throtl_lookup_tg() to __blkg_lookup() blkcg: inline [__]blkg_lookup() ...
2015-09-10Merge branch 'akpm' (patches from Andrew)Linus Torvalds4-9/+140
Merge third patch-bomb from Andrew Morton: - even more of the rest of MM - lib/ updates - checkpatch updates - small changes to a few scruffy filesystems - kmod fixes/cleanups - kexec updates - a dma-mapping cleanup series from hch * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (81 commits) dma-mapping: consolidate dma_set_mask dma-mapping: consolidate dma_supported dma-mapping: cosolidate dma_mapping_error dma-mapping: consolidate dma_{alloc,free}_noncoherent dma-mapping: consolidate dma_{alloc,free}_{attrs,coherent} mm: use vma_is_anonymous() in create_huge_pmd() and wp_huge_pmd() mm: make sure all file VMAs have ->vm_ops set mm, mpx: add "vm_flags_t vm_flags" arg to do_mmap_pgoff() mm: mark most vm_operations_struct const namei: fix warning while make xmldocs caused by namei.c ipc: convert invalid scenarios to use WARN_ON zlib_deflate/deftree: remove bi_reverse() lib/decompress_unlzma: Do a NULL check for pointer lib/decompressors: use real out buf size for gunzip with kernel fs/affs: make root lookup from blkdev logical size sysctl: fix int -> unsigned long assignments in INT_MIN case kexec: export KERNEL_IMAGE_SIZE to vmcoreinfo kexec: align crash_notes allocation to make it be inside one physical page kexec: remove unnecessary test in kimage_alloc_crash_control_pages() kexec: split kexec_load syscall from kexec core code ...
2015-09-10Merge tag 'armsoc-late' of ↵Linus Torvalds1-0/+6
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull late ARM SoC updates from Kevin Hilman: "This is a collection of a few late fixes and other misc stuff that had dependencies on things being merged from other trees. The bulk of the changes are for samsung/exynos SoCs for some changes that needed a few minor reworks so ended up a bit late. The others are mainly for qcom SoCs: a couple fixes and some DTS updates" * tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (37 commits) ARM: multi_v7_defconfig: Enable PBIAS regulator soc: qcom: smd: Correct fBLOCKREADINTR handling soc: qcom: smd: Use correct remote processor ID soc: qcom: smem: Fix errant private access ARM: dts: qcom: msm8974-sony-xperia-honami: Use stdout-path ARM: dts: qcom: msm8960-cdp: Use stdout-path ARM: dts: qcom: msm8660-surf: Use stdout-path ARM: dts: qcom: ipq8064-ap148: Use stdout-path ARM: dts: qcom: apq8084-mtp: Use stdout-path ARM: dts: qcom: apq8084-ifc6540: Use stdout-path ARM: dts: qcom: apq8074-dragonboard: Use stdout-path ARM: dts: qcom: apq8064-ifc6410: Use stdout-path ARM: dts: qcom: apq8064-cm-qs600: Use stdout-path ARM: dts: qcom: Label serial nodes for aliasing and stdout-path reset: ath79: Fix missing spin_lock_init reset: Add (devm_)reset_control_get stub functions ARM: EXYNOS: switch to using generic cpufreq driver for exynos4x12 cpufreq: exynos: Remove unselectable rule for arm-exynos-cpufreq.o ARM: dts: add iommu property to JPEG device for exynos4 ARM: dts: enable SPI1 for exynos4412-odroidu3 ...
2015-09-10Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds1-4/+11
Pull more kvm updates from Paolo Bonzini: "ARM: - Full debug support for arm64 - Active state switching for timer interrupts - Lazy FP/SIMD save/restore for arm64 - Generic ARMv8 target PPC: - Book3S: A few bug fixes - Book3S: Allow micro-threading on POWER8 x86: - Compiler warnings Generic: - Adaptive polling for guest halt" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (49 commits) kvm: irqchip: fix memory leak kvm: move new trace event outside #ifdef CONFIG_KVM_ASYNC_PF KVM: trace kvm_halt_poll_ns grow/shrink KVM: dynamic halt-polling KVM: make halt_poll_ns per-vCPU Silence compiler warning in arch/x86/kvm/emulate.c kvm: compile process_smi_save_seg_64() only for x86_64 KVM: x86: avoid uninitialized variable warning KVM: PPC: Book3S: Fix typo in top comment about locking KVM: PPC: Book3S: Fix size of the PSPB register KVM: PPC: Book3S HV: Exit on H_DOORBELL if HOST_IPI is set KVM: PPC: Book3S HV: Fix race in starting secondary threads KVM: PPC: Book3S: correct width in XER handling KVM: PPC: Book3S HV: Fix preempted vcore stolen time calculation KVM: PPC: Book3S HV: Fix preempted vcore list locking KVM: PPC: Book3S HV: Implement H_CLEAR_REF and H_CLEAR_MOD KVM: PPC: Book3S HV: Fix bug in dirty page tracking KVM: PPC: Book3S HV: Fix race in reading change bit when removing HPTE KVM: PPC: Book3S HV: Implement dynamic micro-threading on POWER8 KVM: PPC: Book3S HV: Make use of unused threads when running guests ...
2015-09-10proc: export idle flag via kpageflagsVladimir Davydov1-0/+7
As noted by Minchan, a benefit of reading idle flag from /proc/kpageflags is that one can easily filter dirty and/or unevictable pages while estimating the size of unused memory. Note that idle flag read from /proc/kpageflags may be stale in case the page was accessed via a PTE, because it would be too costly to iterate over all page mappings on each /proc/kpageflags read to provide an up-to-date value. To make sure the flag is up-to-date one has to read /sys/kernel/mm/page_idle/bitmap first. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Reviewed-by: Andres Lagar-Cavilla <andreslc@google.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: Greg Thelen <gthelen@google.com> Cc: Michel Lespinasse <walken@google.com> Cc: David Rientjes <rientjes@google.com> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-10mm: introduce idle page trackingVladimir Davydov2-0/+100
Knowing the portion of memory that is not used by a certain application or memory cgroup (idle memory) can be useful for partitioning the system efficiently, e.g. by setting memory cgroup limits appropriately. Currently, the only means to estimate the amount of idle memory provided by the kernel is /proc/PID/{clear_refs,smaps}: the user can clear the access bit for all pages mapped to a particular process by writing 1 to clear_refs, wait for some time, and then count smaps:Referenced. However, this method has two serious shortcomings: - it does not count unmapped file pages - it affects the reclaimer logic To overcome these drawbacks, this patch introduces two new page flags, Idle and Young, and a new sysfs file, /sys/kernel/mm/page_idle/bitmap. A page's Idle flag can only be set from userspace by setting bit in /sys/kernel/mm/page_idle/bitmap at the offset corresponding to the page, and it is cleared whenever the page is accessed either through page tables (it is cleared in page_referenced() in this case) or using the read(2) system call (mark_page_accessed()). Thus by setting the Idle flag for pages of a particular workload, which can be found e.g. by reading /proc/PID/pagemap, waiting for some time to let the workload access its working set, and then reading the bitmap file, one can estimate the amount of pages that are not used by the workload. The Young page flag is used to avoid interference with the memory reclaimer. A page's Young flag is set whenever the Access bit of a page table entry pointing to the page is cleared by writing to the bitmap file. If page_referenced() is called on a Young page, it will add 1 to its return value, therefore concealing the fact that the Access bit was cleared. Note, since there is no room for extra page flags on 32 bit, this feature uses extended page flags when compiled on 32 bit. [akpm@linux-foundation.org: fix build] [akpm@linux-foundation.org: kpageidle requires an MMU] [akpm@linux-foundation.org: decouple from page-flags rework] Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Reviewed-by: Andres Lagar-Cavilla <andreslc@google.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: Greg Thelen <gthelen@google.com> Cc: Michel Lespinasse <walken@google.com> Cc: David Rientjes <rientjes@google.com> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-10proc: add kpagecgroup fileVladimir Davydov1-1/+5
/proc/kpagecgroup contains a 64-bit inode number of the memory cgroup each page is charged to, indexed by PFN. Having this information is useful for estimating a cgroup working set size. The file is present if CONFIG_PROC_PAGE_MONITOR && CONFIG_MEMCG. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Reviewed-by: Andres Lagar-Cavilla <andreslc@google.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: Greg Thelen <gthelen@google.com> Cc: Michel Lespinasse <walken@google.com> Cc: David Rientjes <rientjes@google.com> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-10zswap: update docs for runtime-changeable attributesDan Streetman1-8/+28
Change the Documentation/vm/zswap.txt doc to indicate that the "zpool" and "compressor" params are now changeable at runtime. Signed-off-by: Dan Streetman <ddstreet@ieee.org> Cc: Seth Jennings <sjennings@variantweb.net> Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-09Merge tag 'qcom-soc-for-4.3-rc2' of ↵Kevin Hilman2-0/+202
git://codeaurora.org/quic/kernel/agross-msm into next/late Qualcomm ARM Based SoC Updates for 4.3-rc2 * Fix errant private access in SMEM * Fix use of correct remote processor ID in SMD transactions * Correct SMD fBLOCKREADINTR handling * tag 'qcom-soc-for-4.3-rc2' of git://codeaurora.org/quic/kernel/agross-msm: soc: qcom: smd: Correct fBLOCKREADINTR handling soc: qcom: smd: Use correct remote processor ID soc: qcom: smem: Fix errant private access devicetree: soc: Add Qualcomm SMD based RPM DT binding soc: qcom: Driver for the Qualcomm RPM over SMD soc: qcom: Add Shared Memory Driver soc: qcom: Add device tree binding for Shared Memory Device drivers: qcom: Select QCOM_SCM unconditionally for QCOM_PM soc: qcom: Add Shared Memory Manager driver
2015-09-09soc: qcom: smd: Use correct remote processor IDAndy Gross1-0/+6
This patch fixes SMEM addressing issues when remote processors need to use secure SMEM partitions. Signed-off-by: Andy Gross <agross@codeaurora.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
2015-09-09Merge tag 'qcom-soc-for-4.3' into v4.2-rc2Andy Gross2-0/+196
Qualcomm ARM Based SoC Updates for 4.3 * Add SMEM driver * Add SMD driver * Add RPM over SMD driver * Select QCOM_SCM by default
2015-09-09Documentation: dt: binding: atmel-sama5d4-wdt: for SAMA5D4 watchdog driverWenyou Yang1-0/+35
The compatible "atmel,sama5d4-wdt" supports the SAMA5D4 watchdog driver and the watchdog's WDT_MR register can be written more than once. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-09-09DT: watchdog: Add NXP LPC18xx Watchdog Timer binding documentationAriel D'Alessandro1-0/+19
Add the devicetree binding document for NXP LPC18xx Watchdog Timer. Signed-off-by: Ariel D'Alessandro <ariel@vanguardiasur.com.ar> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-09-09Documentation: watchdog: at91sam9_wdt: add clocks propertyAlexandre Belloni1-0/+2
The watchdog has an input clock, the slow clock. It is required as it will not function without it. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-09-09Documentation/watchdog: add timeout and ping rate control to watchdog-test.cTimur Tabi1-5/+17
The watchdog test program is much more useful if it can configure the timeout value and ping rate. This will allow you to test actual timeouts. Adds the -t parameter to set the timeout value (in seconds), and -p to set the ping rate (number of seconds between pings). Signed-off-by: Timur Tabi <timur@codeaurora.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-09-09Merge tag 'pwm/for-4.3-rc1' of ↵Linus Torvalds2-0/+47
git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "This set of changes introduces the beginnings of a new API that's based around the concept of states that can be atomically applied. Drivers go to various lengths to implement something similar, which indicates that the core should really be providing the necessary framework. On top of that, there is a bit of cleanup as well as improved kerneldoc and integration into the device-drivers DocBook. Regarding drivers there is a new one for the NXP LPC18xx family of SoCs and a couple of fixes for existing drivers (pca9685, Broadcom Kona and Atmel HLCDC)" * tag 'pwm/for-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: ARM: at91: pwm: atmel-hlcdc: Add at91sam9n12 errata pwm: Add NXP LPC18xx PWM/SCT DT binding documentation pwm: NXP LPC18xx PWM/SCT driver pwm-pca9685: Support changing the output frequency pwm-pca9685: Fix several driver bugs pwm: kona: Modify settings application sequence pwm: pca9685: Drop owner assignment pwm: Add to device-drivers documentation pwm: Clean up kerneldoc pwm: Remove useless whitespace pwm: sysfs: Remove unnecessary padding pwm: sysfs: Properly convert from enum to string pwm: Make use of pwm_get_xxx() helpers where appropriate pwm: Add pwm_get_polarity() helper function pwm: Constify PWM device where possible pwm: Add the pwm_is_enabled() helper
2015-09-09Merge tag 'metag-for-v4.3' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag Pull metag updates from James Hogan: "Metag architecture changes for v4.3. Just a couple of changes for v4.3-rc1. A preparatory IRQ patch to prepare for moving irq_data struct members, and a tweak to Documentation/features since Meta2 could support THP" * tag 'metag-for-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag: Documentation/features/vm: Meta2 is capable of THP metag/irq: Use access helper irq_data_get_affinity_mask()
2015-09-09Merge tag 'for-linus' of ↵Linus Torvalds1-0/+20
git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma Pull inifiniband/rdma updates from Doug Ledford: "This is a fairly sizeable set of changes. I've put them through a decent amount of testing prior to sending the pull request due to that. There are still a few fixups that I know are coming, but I wanted to go ahead and get the big, sizable chunk into your hands sooner rather than waiting for those last few fixups. Of note is the fact that this creates what is intended to be a temporary area in the drivers/staging tree specifically for some cleanups and additions that are coming for the RDMA stack. We deprecated two drivers (ipath and amso1100) and are waiting to hear back if we can deprecate another one (ehca). We also put Intel's new hfi1 driver into this area because it needs to be refactored and a transfer library created out of the factored out code, and then it and the qib driver and the soft-roce driver should all be modified to use that library. I expect drivers/staging/rdma to be around for three or four kernel releases and then to go away as all of the work is completed and final deletions of deprecated drivers are done. Summary of changes for 4.3: - Create drivers/staging/rdma - Move amso1100 driver to staging/rdma and schedule for deletion - Move ipath driver to staging/rdma and schedule for deletion - Add hfi1 driver to staging/rdma and set TODO for move to regular tree - Initial support for namespaces to be used on RDMA devices - Add RoCE GID table handling to the RDMA core caching code - Infrastructure to support handling of devices with differing read and write scatter gather capabilities - Various iSER updates - Kill off unsafe usage of global mr registrations - Update SRP driver - Misc mlx4 driver updates - Support for the mr_alloc verb - Support for a netlink interface between kernel and user space cache daemon to speed path record queries and route resolution - Ininitial support for safe hot removal of verbs devices" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (136 commits) IB/ipoib: Suppress warning for send only join failures IB/ipoib: Clean up send-only multicast joins IB/srp: Fix possible protection fault IB/core: Move SM class defines from ib_mad.h to ib_smi.h IB/core: Remove unnecessary defines from ib_mad.h IB/hfi1: Add PSM2 user space header to header_install IB/hfi1: Add CSRs for CONFIG_SDMA_VERBOSITY mlx5: Fix incorrect wc pkey_index assignment for GSI messages IB/mlx5: avoid destroying a NULL mr in reg_user_mr error flow IB/uverbs: reject invalid or unknown opcodes IB/cxgb4: Fix if statement in pick_local_ip6adddrs IB/sa: Fix rdma netlink message flags IB/ucma: HW Device hot-removal support IB/mlx4_ib: Disassociate support IB/uverbs: Enable device removal when there are active user space applications IB/uverbs: Explicitly pass ib_dev to uverbs commands IB/uverbs: Fix race between ib_uverbs_open and remove_one IB/uverbs: Fix reference counting usage of event files IB/core: Make ib_dealloc_pd return void IB/srp: Create an insecure all physical rkey only if needed ...
2015-09-09pwm: Add NXP LPC18xx PWM/SCT DT binding documentationAriel D'Alessandro1-0/+20
Add the devicetree binding document for NXP LPC18xx PWM/SCT. Signed-off-by: Ariel D'Alessandro <ariel@vanguardiasur.com.ar> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2015-09-08Merge tag 'for-linus-4.3' of git://git.code.sf.net/p/openipmi/linux-ipmiLinus Torvalds1-0/+25
Pull IPMI updates from Corey Minyard: "Most of these have been sitting in linux-next for more than a release, particularly commit 0fbcf4af7c83 ("ipmi: Convert the IPMI SI ACPI handling to a platform device") which is probably the most complex patch. That is also the one that changes drivers/acpi/acpi_pnp.c. The change in that file is only removing IPMI from a "special platform devices" list, since I convert it to the standard PNP interface. I posted this one to the ACPI list twice and got no response, and it seems to work well in my testing, so I'm hoping it's good. Hidehiro Kawai posted a set of changes that improves the panic time handling in the IPMI driver. The rest of the changes are minor bug fixes or cleanups and some documentation" * tag 'for-linus-4.3' of git://git.code.sf.net/p/openipmi/linux-ipmi: ipmi:ssif: Add a module parm to specify that SMBus alerts don't work ipmi: add of_device_id in MODULE_DEVICE_TABLE ipmi: Compensate for BMCs that wont set the irq enable bit ipmi: Don't call receive handler in the panic context ipmi: Avoid touching possible corrupted lists in the panic context ipmi: Don't flush messages in sender() in run-to-completion mode ipmi: Factor out message flushing procedure ipmi: Remove unneeded set_run_to_completion call ipmi: Make some data const that was only read ipmi: constify SSIF ACPI device ids ipmi: Delete an unnecessary check before the function call "cleanup_one_si" char:ipmi - Change 1 to true for bool type variables during initialization. impi:Remove unneeded setting of module owner to THIS_MODULE in the platform structure, powernv_ipmi_driver ipmi: Add a comment in how messages are delivered from the lower layer ipmi/powernv: Fix potential invalid pointer dereference ipmi: Convert the IPMI SI ACPI handling to a platform device ipmi: Add device tree bindings information
2015-09-08Merge branch 'akpm' (patches from Andrew)Linus Torvalds8-18/+54
Merge second patch-bomb from Andrew Morton: "Almost all of the rest of MM. There was an unusually large amount of MM material this time" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (141 commits) zpool: remove no-op module init/exit mm: zbud: constify the zbud_ops mm: zpool: constify the zpool_ops mm: swap: zswap: maybe_preload & refactoring zram: unify error reporting zsmalloc: remove null check from destroy_handle_cache() zsmalloc: do not take class lock in zs_shrinker_count() zsmalloc: use class->pages_per_zspage zsmalloc: consider ZS_ALMOST_FULL as migrate source zsmalloc: partial page ordering within a fullness_list zsmalloc: use shrinker to trigger auto-compaction zsmalloc: account the number of compacted pages zsmalloc/zram: introduce zs_pool_stats api zsmalloc: cosmetic compaction code adjustments zsmalloc: introduce zs_can_compact() function zsmalloc: always keep per-class stats zsmalloc: drop unused variable `nr_to_migrate' mm/memblock.c: fix comment in __next_mem_range() mm/page_alloc.c: fix type information of memoryless node memory-hotplug: fix comments in zone_spanned_pages_in_node() and zone_spanned_pages_in_node() ...
2015-09-08Merge tag 'iommu-updates-v4.3' of ↵Linus Torvalds2-0/+12
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull iommu updates for from Joerg Roedel: "This time the IOMMU updates are mostly cleanups or fixes. No big new features or drivers this time. In particular the changes include: - Bigger cleanup of the Domain<->IOMMU data structures and the code that manages them in the Intel VT-d driver. This makes the code easier to understand and maintain, and also easier to keep the data structures in sync. It is also a preparation step to make use of default domains from the IOMMU core in the Intel VT-d driver. - Fixes for a couple of DMA-API misuses in ARM IOMMU drivers, namely in the ARM and Tegra SMMU drivers. - Fix for a potential buffer overflow in the OMAP iommu driver's debug code - A couple of smaller fixes and cleanups in various drivers - One small new feature: Report domain-id usage in the Intel VT-d driver to easier detect bugs where these are leaked" * tag 'iommu-updates-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (83 commits) iommu/vt-d: Really use upper context table when necessary x86/vt-d: Fix documentation of DRHD iommu/fsl: Really fix init section(s) content iommu/io-pgtable-arm: Unmap and free table when overwriting with block iommu/io-pgtable-arm: Move init-fn declarations to io-pgtable.h iommu/msm: Use BUG_ON instead of if () BUG() iommu/vt-d: Access iomem correctly iommu/vt-d: Make two functions static iommu/vt-d: Use BUG_ON instead of if () BUG() iommu/vt-d: Return false instead of 0 in irq_remapping_cap() iommu/amd: Use BUG_ON instead of if () BUG() iommu/amd: Make a symbol static iommu/amd: Simplify allocation in irq_remapping_alloc() iommu/tegra-smmu: Parameterize number of TLB lines iommu/tegra-smmu: Factor out tegra_smmu_set_pde() iommu/tegra-smmu: Extract tegra_smmu_pte_get_use() iommu/tegra-smmu: Use __GFP_ZERO to allocate zeroed pages iommu/tegra-smmu: Remove PageReserved manipulation iommu/tegra-smmu: Convert to use DMA API iommu/tegra-smmu: smmu_flush_ptc() wants device addresses ...
2015-09-08Merge tag 'mmc-v4.3' of git://git.linaro.org/people/ulf.hansson/mmcLinus Torvalds4-2/+29
Pull MMC updates from Ulf Hansson: "MMC core: - Fix a race condition in the request handling - Skip trim commands for some buggy kingston eMMCs - An optimization and a correction for erase groups - Set CMD23 quirk for some Sandisk cards MMC host: - sdhci: Give GPIO CD higher precedence and don't poll when it's used - sdhci: Fix DMA memory leakage - sdhci: Some updates for clock management - sdhci-of-at91: introduce driver for the Atmel SDMMC - sdhci-of-arasan: Add support for sdhci-5.1 - sdhci-esdhc-imx: Add support for imx7d which also supports HS400 - sdhci: A collection of fixes and improvements for various sdhci hosts - omap_hsmmc: Modernization of the regulator code - dw_mmc: A couple of fixes for DMA and PIO mode - usdhi6rol0: A few fixes and support probe deferral for regulators - pxamci: Convert to use dmaengine - sh_mmcif: Fix the suspend process in a short term solution - tmio: Adjust timeout for commands - sunxi: Fix timeout while gating/ungating clock" * tag 'mmc-v4.3' of git://git.linaro.org/people/ulf.hansson/mmc: (67 commits) mmc: android-goldfish: remove incorrect __iomem annotation mmc: core: fix race condition in mmc_wait_data_done mmc: host: omap_hsmmc: remove CONFIG_REGULATOR check mmc: host: omap_hsmmc: use ios->vdd for setting vmmc voltage mmc: host: omap_hsmmc: use regulator_is_enabled to find pbias status mmc: host: omap_hsmmc: enable/disable vmmc_aux regulator based on previous state mmc: host: omap_hsmmc: don't use ->set_power to set initial regulator state mmc: host: omap_hsmmc: avoid pbias regulator enable on power off mmc: host: omap_hsmmc: add separate function to set pbias mmc: host: omap_hsmmc: add separate functions for enable/disable supply mmc: host: omap_hsmmc: return error if any of the regulator APIs fail mmc: host: omap_hsmmc: remove unnecessary pbias set_voltage mmc: host: omap_hsmmc: use mmc_host's vmmc and vqmmc mmc: host: omap_hsmmc: use the ocrmask provided by the vmmc regulator mmc: host: omap_hsmmc: cleanup omap_hsmmc_reg_get() mmc: host: omap_hsmmc: return on fatal errors from omap_hsmmc_reg_get mmc: host: omap_hsmmc: use devm_regulator_get_optional() for vmmc mmc: sdhci-of-at91: fix platform_no_drv_owner.cocci warnings mmc: sh_mmcif: Fix suspend process mmc: usdhi6rol0: fix error return code ...
2015-09-08Merge tag 'platform-drivers-x86-v4.3-1' of ↵Linus Torvalds1-1/+1
git://git.infradead.org/users/dvhart/linux-platform-drivers-x86 Pull x86 platform driver updates from Darren Hart: "Significant work on toshiba_acpi, including new hardware support, refactoring, and cleanups. Extend device support for asus, ideapad, and acer systems. New surface pro 3 buttons driver. Misc minor cleanups for thinkpad and hp-wireless. acer-wmi: - No rfkill on HP Omen 15 wifi thinkpad_acpi: - Remove side effects from vdbg_printk -> no_printk macro surface pro 3: - Add support driver for Surface Pro 3 buttons hp-wireless: - remove unneeded goto/label in hpwl_init ideapad-laptop: - add alternative representation for Yoga 2 to DMI table - Add Lenovo Yoga 3 14 to no_hw_rfkill dmi list asus-laptop: - Add key found on Asus F3M MAINTAINERS: - Remove Toshiba Linux mailing list address toshiba_acpi: - Bump driver version to 0.23 - Remove unnecessary checks and returns in HCI/SCI functions - Refactor *{get, set} functions return value - Remove "*not supported" feature prints - Change *available functions return type - Add set_fan_status function - Change some variables to avoid warnings from ninja-check - Reorder toshiba_acpi_alt_keymap entries - Remove unused wireless defines - Transflective backlight updates - Avoid registering input device on WMI event laptops - Add /dev/toshiba_acpi device - Adapt /proc/acpi/toshiba/keys to TOS1900 devices" * tag 'platform-drivers-x86-v4.3-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86: (21 commits) acer-wmi: No rfkill on HP Omen 15 wifi thinkpad_acpi: Remove side effects from vdbg_printk -> no_printk macro surface pro 3: Add support driver for Surface Pro 3 buttons hp-wireless: remove unneeded goto/label in hpwl_init ideapad-laptop: add alternative representation for Yoga 2 to DMI table asus-laptop: Add key found on Asus F3M MAINTAINERS: Remove Toshiba Linux mailing list address ideapad-laptop: Add Lenovo Yoga 3 14 to no_hw_rfkill dmi list toshiba_acpi: Bump driver version to 0.23 toshiba_acpi: Remove unnecessary checks and returns in HCI/SCI functions toshiba_acpi: Refactor *{get, set} functions return value toshiba_acpi: Remove "*not supported" feature prints toshiba_acpi: Change *available functions return type toshiba_acpi: Add set_fan_status function toshiba_acpi: Change some variables to avoid warnings from ninja-check toshiba_acpi: Reorder toshiba_acpi_alt_keymap entries toshiba_acpi: Remove unused wireless defines toshiba_acpi: Transflective backlight updates toshiba_acpi: Avoid registering input device on WMI event laptops toshiba_acpi: Add /dev/toshiba_acpi device ...
2015-09-08Merge branch 'i2c/for-4.3' of ↵Linus Torvalds13-4/+192
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: "Features: - new drivers: Renesas EMEV2, register based MUX, NXP LPC2xxx - core: scans DT and assigns wakeup interrupts. no driver changes needed. - core: some refcouting issues fixed and better API for that - core: new helper function for best effort block read emulation - slave framework: proper DT bindings and userspace instantiation - some bigger work for xiic, pxa, omap drivers .. and quite a number of smaller driver fixes, cleanups, improvements" * 'i2c/for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (65 commits) i2c: mux: reg Change ioread endianness for readback i2c: mux: reg: fix compilation warnings i2c: mux: reg: simplify register size checking i2c: muxes: fix leaked i2c adapter device node references i2c: allow specifying separate wakeup interrupt in device tree of/irq: export of_get_irq_byname() i2c: xgene-slimpro: dma_mapping_error() doesn't return an error code i2c: Replace I2C_CROS_EC_TUNNEL dependency eeprom: at24: use i2c_smbus_read_i2c_block_data_or_emulated i2c: core: Add support for best effort block read emulation i2c: lpc2k: add driver i2c: mux: Add register-based mux i2c-mux-reg i2c: dt: describe generic bindings i2c: slave: print warning if slave flag not set i2c: support 10 bit and slave addresses in sysfs 'new_device' i2c: take address space into account when checking for used addresses i2c: apply DT flags when probing i2c: make address check indpendent from client struct i2c: rename address check functions i2c: apply address offset for slaves, too ...
2015-09-08Merge tag 'rtc-v4.3' of ↵Linus Torvalds3-0/+50
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "Core: - use is_visible() to control sysfs attributes - switch wakealarm attribute to DEVICE_ATTR_RW - make rtc_does_wakealarm() return boolean - properly manage lifetime of dev and cdev in rtc device - remove unnecessary device_get() in rtc_device_unregister - fix double free in rtc_register_device() error path New drivers: - NXP LPC24xx - Xilinx Zynq MP - Dialog DA9062 Subsystem wide cleanups: - fix drivers that consider 0 as a valid IRQ in client->irq - Drop (un)likely before IS_ERR(_OR_NULL) - drop the remaining owner assignment for i2c_driver and platform_driver - module autoload fixes Drivers: - 88pm80x: add device tree support - abx80x: fix RTC write bit - ab8500: Add a sentinel to ab85xx_rtc_ids[] - armada38x: Align RTC set time procedure with the official errata - as3722: correct month value - at91sam9: cleanups - at91rm9200: get and use slow clock and cleanups - bq32k: remove redundant check - cmos: century support, proper fix for the spurious wakeup - ds1307: cleanups and wakeup irq support - ds1374: Remove unused variable - ds1685: Use module_platform_driver - ds3232: fix WARNING trace in resume function - gemini: fix ptr_ret.cocci warnings - mt6397: implement suspend/resume - omap: support internal and external clock enabling - opal: Enable alarms only when opal supports tpo - pcf2127: use OFS flag to detect unreliable date and warn the user - pl031: fix typo for author email - rx8025: huge cleanup and fixes - sa1100/pxa: share common code - s5m: fix to update ctrl register - s3c: fix clocks and wakeup, cleanup - sirfsoc: use regmap - nvram_read()/nvram_write() functions for cmos, ds1305, ds1307, ds1343, ds1511, ds1553, ds1742, m48t59, rp5c01, stk17ta8, tx4939 - use rtc_valid_tm() error code when reading date/time instead of 0 for isl12022, pcf2123, pcf2127" * tag 'rtc-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (90 commits) rtc: abx80x: fix RTC write bit rtc: ab8500: Add a sentinel to ab85xx_rtc_ids[] rtc: ds1374: Remove unused variable rtc: Fix module autoload for OF platform drivers rtc: Fix module autoload for rtc-{ab8500,max8997,s5m} drivers rtc: omap: Add external clock enabling support rtc: omap: Add internal clock enabling support ARM: dts: AM437x: Add the internal and external clock nodes for rtc rtc: s5m: fix to update ctrl register rtc: add xilinx zynqmp rtc driver devicetree: bindings: rtc: add bindings for xilinx zynqmp rtc rtc: as3722: correct month value ARM: config: Switch PXA27x platforms to use PXA RTC driver ARM: mmp: remove unused RTC register definitions ARM: sa1100: remove unused RTC register definitions rtc: sa1100/pxa: convert to run-time register mapping ARM: pxa: add memory resource to SA1100 RTC device rtc: pxa: convert to use shared sa1100 functions rtc: sa1100: prepare to share sa1100_rtc_ops rtc: ds3232: fix WARNING trace in resume function ...
2015-09-08zsmalloc: account the number of compacted pagesSergey Senozhatsky1-1/+2
Compaction returns back to zram the number of migrated objects, which is quite uninformative -- we have objects of different sizes so user space cannot obtain any valuable data from that number. Change compaction to operate in terms of pages and return back to compaction issuer the number of pages that were freed during compaction. So from now on we will export more meaningful value in zram<id>/mm_stat -- the number of freed (compacted) pages. This requires: (a) a rename of `num_migrated' to 'pages_compacted' (b) a internal API change -- return first_page's fullness_group from putback_zspage(), so we know when putback_zspage() did free_zspage(). It helps us to account compaction stats correctly. Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Acked-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-08mm/page_alloc.c: fix a misleading commentYaowei Bai1-2/+2
The comment says that the per-cpu batchsize and zone watermarks are determined by present_pages which is definitely wrong, they are both calculated from managed_pages. Fix it. Signed-off-by: Yaowei Bai <bywxiaobai@163.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-08Documentation: update libhugetlbfs location and use for testingMike Kravetz1-4/+11
The URL for libhugetlbfs has changed. Also, put a stronger emphasis on using libgugetlbfs for hugetlb regression testing. Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com> Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Joern Engel <joern@logfs.org> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: David Rientjes <rientjes@google.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-08mm: add dma_pool_zalloc() call to DMA APISean O. Stalley1-0/+7
Add a wrapper function for dma_pool_alloc() to get zeroed memory. Signed-off-by: Sean O. Stalley <sean.stalley@intel.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Gilles Muller <Gilles.Muller@lip6.fr> Cc: Nicolas Palix <nicolas.palix@imag.fr> Cc: Michal Marek <mmarek@suse.cz> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-08mm, oom: do not panic for oom kills triggered from sysrqDavid Rientjes1-1/+2
Sysrq+f is used to kill a process either for debug or when the VM is otherwise unresponsive. It is not intended to trigger a panic when no process may be killed. Avoid panicking the system for sysrq+f when no processes are killed. Signed-off-by: David Rientjes <rientjes@google.com> Suggested-by: Michal Hocko <mhocko@suse.cz> Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-08mm: /proc/pid/smaps:: show proportional swap share of the mappingMinchan Kim1-5/+13
We want to know per-process workingset size for smart memory management on userland and we use swap(ex, zram) heavily to maximize memory efficiency so workingset includes swap as well as RSS. On such system, if there are lots of shared anonymous pages, it's really hard to figure out exactly how many each process consumes memory(ie, rss + wap) if the system has lots of shared anonymous memory(e.g, android). This patch introduces SwapPss field on /proc/<pid>/smaps so we can get more exact workingset size per process. Bongkyu tested it. Result is below. 1. 50M used swap SwapTotal: 461976 kB SwapFree: 411192 kB $ adb shell cat /proc/*/smaps | grep "SwapPss:" | awk '{sum += $2} END {print sum}'; 48236 $ adb shell cat /proc/*/smaps | grep "Swap:" | awk '{sum += $2} END {print sum}'; 141184 2. 240M used swap SwapTotal: 461976 kB SwapFree: 216808 kB $ adb shell cat /proc/*/smaps | grep "SwapPss:" | awk '{sum += $2} END {print sum}'; 230315 $ adb shell cat /proc/*/smaps | grep "Swap:" | awk '{sum += $2} END {print sum}'; 1387744 [akpm@linux-foundation.org: simplify kunmap_atomic() call] Signed-off-by: Minchan Kim <minchan@kernel.org> Reported-by: Bongkyu Kim <bongkyu.kim@lge.com> Tested-by: Bongkyu Kim <bongkyu.kim@lge.com> Cc: Hugh Dickins <hughd@google.com> Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Jerome Marchand <jmarchan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-08pagemap: update documentationKonstantin Khlebnikov1-2/+12
Notes about recent changes. [akpm@linux-foundation.org: various tweaks] Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Cc: Mark Williamson <mwilliamson@undo-software.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-08pagemap: add mmap-exclusive bit for marking pages mapped only hereKonstantin Khlebnikov1-1/+2
This patch sets bit 56 in pagemap if this page is mapped only once. It allows to detect exclusively used pages without exposing PFN: present file exclusive state 0 0 0 non-present 1 1 0 file page mapped somewhere else 1 1 1 file page mapped only here 1 0 0 anon non-CoWed page (shared with parent/child) 1 0 1 anon CoWed page (or never forked) CoWed pages in (MAP_FILE | MAP_PRIVATE) areas are anon in this context. MMap-exclusive bit doesn't reflect potential page-sharing via swapcache: page could be mapped once but has several swap-ptes which point to it. Application could detect that by swap bit in pagemap entry and touch that pte via /proc/pid/mem to get real information. See http://lkml.kernel.org/r/CAEVpBa+_RyACkhODZrRvQLs80iy0sqpdrd0AaP_-tgnX3Y9yNQ@mail.gmail.com Requested by Mark Williamson. [akpm@linux-foundation.org: fix spello] Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Reviewed-by: Mark Williamson <mwilliamson@undo-software.com> Tested-by: Mark Williamson <mwilliamson@undo-software.com> Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-08dax: add huge page fault supportMatthew Wilcox1-3/+4
This is the support code for DAX-enabled filesystems to allow them to provide huge pages in response to faults. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Cc: Hillf Danton <dhillf@gmail.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-08Merge tag 'libnvdimm-for-4.3' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm updates from Dan Williams: "This update has successfully completed a 0day-kbuild run and has appeared in a linux-next release. The changes outside of the typical drivers/nvdimm/ and drivers/acpi/nfit.[ch] paths are related to the removal of IORESOURCE_CACHEABLE, the introduction of memremap(), and the introduction of ZONE_DEVICE + devm_memremap_pages(). Summary: - Introduce ZONE_DEVICE and devm_memremap_pages() as a generic mechanism for adding device-driver-discovered memory regions to the kernel's direct map. This facility is used by the pmem driver to enable pfn_to_page() operations on the page frames returned by DAX ('direct_access' in 'struct block_device_operations'). For now, the 'memmap' allocation for these "device" pages comes from "System RAM". Support for allocating the memmap from device memory will arrive in a later kernel. - Introduce memremap() to replace usages of ioremap_cache() and ioremap_wt(). memremap() drops the __iomem annotation for these mappings to memory that do not have i/o side effects. The replacement of ioremap_cache() with memremap() is limited to the pmem driver to ease merging the api change in v4.3. Completion of the conversion is targeted for v4.4. - Similar to the usage of memcpy_to_pmem() + wmb_pmem() in the pmem driver, update the VFS DAX implementation and PMEM api to provide persistence guarantees for kernel operations on a DAX mapping. - Convert the ACPI NFIT 'BLK' driver to map the block apertures as cacheable to improve performance. - Miscellaneous updates and fixes to libnvdimm including support for issuing "address range scrub" commands, clarifying the optimal 'sector size' of pmem devices, a clarification of the usage of the ACPI '_STA' (status) property for DIMM devices, and other minor fixes" * tag 'libnvdimm-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (34 commits) libnvdimm, pmem: direct map legacy pmem by default libnvdimm, pmem: 'struct page' for pmem libnvdimm, pfn: 'struct page' provider infrastructure x86, pmem: clarify that ARCH_HAS_PMEM_API implies PMEM mapped WB add devm_memremap_pages mm: ZONE_DEVICE for "device memory" mm: move __phys_to_pfn and __pfn_to_phys to asm/generic/memory_model.h dax: drop size parameter to ->direct_access() nd_blk: change aperture mapping from WC to WB nvdimm: change to use generic kvfree() pmem, dax: have direct_access use __pmem annotation dax: update I/O path to do proper PMEM flushing pmem: add copy_from_iter_pmem() and clear_pmem() pmem, x86: clean up conditional pmem includes pmem: remove layer when calling arch_has_wmb_pmem() pmem, x86: move x86 PMEM API to new pmem.h header libnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a tristate option pmem: switch to devm_ allocations devres: add devm_memremap libnvdimm, btt: write and validate parent_uuid ...
2015-09-08Merge tag 'trace-v4.3' of ↵Linus Torvalds1-13/+38
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing update from Steven Rostedt: "Mostly this is just clean ups and micro optimizations. The changes with more meat are: - Allowing the trace event filters to filter on CPU number and process ids - Two new markers for trace output latency were added (10 and 100 msec latencies) - Have tracing_thresh filter function profiling time I also worked on modifying the ring buffer code for some future work, and moved the adding of the timestamp around. One of my changes caused a regression, and since other changes were built on top of it and already tested, I had to operate a revert of that change. Instead of rebasing, this change set has the code that caused a regression as well as the code to revert that change without touching the other changes that were made on top of it" * tag 'trace-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ring-buffer: Revert "ring-buffer: Get timestamp after event is allocated" tracing: Don't make assumptions about length of string on task rename tracing: Allow triggers to filter for CPU ids and process names ftrace: Format MCOUNT_ADDR address as type unsigned long tracing: Introduce two additional marks for delay ftrace: Fix function_graph duration spacing with 7-digits ftrace: add tracing_thresh to function profile tracing: Clean up stack tracing and fix fentry updates ring-buffer: Reorganize function locations ring-buffer: Make sure event has enough room for extend and padding ring-buffer: Get timestamp after event is allocated ring-buffer: Move the adding of the extended timestamp out of line ring-buffer: Add event descriptor to simplify passing data ftrace: correct the counter increment for trace_buffer data tracing: Fix for non-continuous cpu ids tracing: Prefer kcalloc over kzalloc with multiply
2015-09-08Merge branch 'next' of ↵Linus Torvalds5-20/+95
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem updates from James Morris: "Highlights: - PKCS#7 support added to support signed kexec, also utilized for module signing. See comments in 3f1e1bea. ** NOTE: this requires linking against the OpenSSL library, which must be installed, e.g. the openssl-devel on Fedora ** - Smack - add IPv6 host labeling; ignore labels on kernel threads - support smack labeling mounts which use binary mount data - SELinux: - add ioctl whitelisting (see http://kernsec.org/files/lss2015/vanderstoep.pdf) - fix mprotect PROT_EXEC regression caused by mm change - Seccomp: - add ptrace options for suspend/resume" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (57 commits) PKCS#7: Add OIDs for sha224, sha284 and sha512 hash algos and use them Documentation/Changes: Now need OpenSSL devel packages for module signing scripts: add extract-cert and sign-file to .gitignore modsign: Handle signing key in source tree modsign: Use if_changed rule for extracting cert from module signing key Move certificate handling to its own directory sign-file: Fix warning about BIO_reset() return value PKCS#7: Add MODULE_LICENSE() to test module Smack - Fix build error with bringup unconfigured sign-file: Document dependency on OpenSSL devel libraries PKCS#7: Appropriately restrict authenticated attributes and content type KEYS: Add a name for PKEY_ID_PKCS7 PKCS#7: Improve and export the X.509 ASN.1 time object decoder modsign: Use extract-cert to process CONFIG_SYSTEM_TRUSTED_KEYS extract-cert: Cope with multiple X.509 certificates in a single file sign-file: Generate CMS message as signature instead of PKCS#7 PKCS#7: Support CMS messages also [RFC5652] X.509: Change recorded SKID & AKID to not include Subject or Issuer PKCS#7: Check content type and versions MAINTAINERS: The keyrings mailing list has moved ...
2015-09-08Merge tag 'for-linus-4.3-rc0-tag' of ↵Linus Torvalds2-0/+30
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from David Vrabel: "Xen features and fixes for 4.3: - Convert xen-blkfront to the multiqueue API - [arm] Support binding event channels to different VCPUs. - [x86] Support > 512 GiB in a PV guests (off by default as such a guest cannot be migrated with the current toolstack). - [x86] PMU support for PV dom0 (limited support for using perf with Xen and other guests)" * tag 'for-linus-4.3-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (33 commits) xen: switch extra memory accounting to use pfns xen: limit memory to architectural maximum xen: avoid another early crash of memory limited dom0 xen: avoid early crash of memory limited dom0 arm/xen: Remove helpers which are PV specific xen/x86: Don't try to set PCE bit in CR4 xen/PMU: PMU emulation code xen/PMU: Intercept PMU-related MSR and APIC accesses xen/PMU: Describe vendor-specific PMU registers xen/PMU: Initialization code for Xen PMU xen/PMU: Sysfs interface for setting Xen PMU mode xen: xensyms support xen: remove no longer needed p2m.h xen: allow more than 512 GB of RAM for 64 bit pv-domains xen: move p2m list if conflicting with e820 map xen: add explicit memblock_reserve() calls for special pages mm: provide early_memremap_ro to establish read-only mapping xen: check for initrd conflicting with e820 map xen: check pre-allocated page tables for conflict with memory map xen: check for kernel memory conflicting with memory layout ...
2015-09-07Merge tag 'nfs-for-4.3-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds1-0/+9
Pull NFS client updates from Trond Myklebust: "Highlights include: Stable patches: - Fix atomicity of pNFS commit list updates - Fix NFSv4 handling of open(O_CREAT|O_EXCL|O_RDONLY) - nfs_set_pgio_error sometimes misses errors - Fix a thinko in xs_connect() - Fix borkage in _same_data_server_addrs_locked() - Fix a NULL pointer dereference of migration recovery ops for v4.2 client - Don't let the ctime override attribute barriers. - Revert "NFSv4: Remove incorrect check in can_open_delegated()" - Ensure flexfiles pNFS driver updates the inode after write finishes - flexfiles must not pollute the attribute cache with attrbutes from the DS - Fix a protocol error in layoutreturn - Fix a protocol issue with NFSv4.1 CLOSE stateids Bugfixes + cleanups - pNFS blocks bugfixes from Christoph - Various cleanups from Anna - More fixes for delegation corner cases - Don't fsync twice for O_SYNC/IS_SYNC files - Fix pNFS and flexfiles layoutstats bugs - pnfs/flexfiles: avoid duplicate tracking of mirror data - pnfs: Fix layoutget/layoutreturn/return-on-close serialisation issues - pnfs/flexfiles: error handling retries a layoutget before fallback to MDS Features: - Full support for the OPEN NFS4_CREATE_EXCLUSIVE4_1 mode from Kinglong - More RDMA client transport improvements from Chuck - Removal of the deprecated ib_reg_phys_mr() and ib_rereg_phys_mr() verbs from the SUNRPC, Lustre and core infiniband tree. - Optimise away the close-to-open getattr if there is no cached data" * tag 'nfs-for-4.3-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (108 commits) NFSv4: Respect the server imposed limit on how many changes we may cache NFSv4: Express delegation limit in units of pages Revert "NFS: Make close(2) asynchronous when closing NFS O_DIRECT files" NFS: Optimise away the close-to-open getattr if there is no cached data NFSv4.1/flexfiles: Clean up ff_layout_write_done_cb/ff_layout_commit_done_cb NFSv4.1/flexfiles: Mark the layout for return in ff_layout_io_track_ds_error() nfs: Remove unneeded checking of the return value from scnprintf nfs: Fix truncated client owner id without proto type NFSv4.1/flexfiles: Mark layout for return if the mirrors are invalid NFSv4.1/flexfiles: RW layouts are valid only if all mirrors are valid NFSv4.1/flexfiles: Fix incorrect usage of pnfs_generic_mark_devid_invalid() NFSv4.1/flexfiles: Fix freeing of mirrors NFSv4.1/pNFS: Don't request a minimal read layout beyond the end of file NFSv4.1/pnfs: Handle LAYOUTGET return values correctly NFSv4.1/pnfs: Don't ask for a read layout for an empty file. NFSv4.1: Fix a protocol issue with CLOSE stateids NFSv4.1/flexfiles: Don't mark the entire deviceid as bad for file errors SUNRPC: Prevent SYN+SYNACK+RST storms SUNRPC: xs_reset_transport must mark the connection as disconnected NFSv4.1/pnfs: Ensure layoutreturn reserves space for the opaque payload ...
2015-09-07Documentation/features/vm: Meta2 is capable of THPJames Hogan1-1/+1
Change metag Transparent Huge Pages (THP) support from .. to TODO. Meta2 has variable sized pages, between 4KB and 4MB, specified at the 1st level page table level, and already supports hugetlbfs, so supporting THP is theoretically possible too. Signed-off-by: James Hogan <james.hogan@imgtec.com> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-metag@vger.kernel.org Cc: linux-doc@vger.kernel.org
2015-09-05Merge tag 'media/v4.3-1' of ↵Linus Torvalds12-35/+235
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - new DVB frontend drivers: ascot2e, cxd2841er, horus3a, lnbh25 - new HDMI capture driver: tc358743 - new driver for NetUP DVB new boards (netup_unidvb) - IR support for DVBSky cards (smipcie-ir) - Coda driver has gain macroblock tiling support - Renesas R-Car gains JPEG codec driver - new DVB platform driver for STi boards: c8sectpfe - added documentation for the media core kABI to device-drivers DocBook - lots of driver fixups, cleanups and improvements * tag 'media/v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (297 commits) [media] c8sectpfe: Remove select on undefined LIBELF_32 [media] i2c: fix platform_no_drv_owner.cocci warnings [media] cx231xx: Use wake_up_interruptible() instead of wake_up_interruptible_nr() [media] tc358743: only queue subdev notifications if devnode is set [media] tc358743: add missing Kconfig dependency/select [media] c8sectpfe: Use %pad to print 'dma_addr_t' [media] DocBook media: Fix typo "the the" in xml files [media] tc358743: make reset gpio optional [media] tc358743: set direction of reset gpio using devm_gpiod_get [media] dvbdev: document most of the functions/data structs [media] dvb_frontend.h: document the struct dvb_frontend [media] dvb-frontend.h: document struct dtv_frontend_properties [media] dvb-frontend.h: document struct dvb_frontend_ops [media] dvb: Use DVBFE_ALGO_HW where applicable [media] dvb_frontend.h: document struct analog_demod_ops [media] dvb_frontend.h: Document struct dvb_tuner_ops [media] Docbook: Document struct analog_parameters [media] dvb_frontend.h: get rid of dvbfe_modcod [media] add documentation for struct dvb_tuner_info [media] dvb_frontend: document dvb_frontend_tune_settings ...
2015-09-05Merge tag 'md/4.3' of git://neil.brown.name/mdLinus Torvalds1-2/+2
Pull md updates from Neil Brown: - an assortment of little fixes, several for minor races only likely to be hit during testing - further cluster-md-raid1 development, not ready for real use yet. - new RAID6 syndrome code for ARM NEON - fix a race where a write can return before failure of one device is properly recorded in metadata, so an immediate crash might result in that write being lost. * tag 'md/4.3' of git://neil.brown.name/md: (33 commits) md/raid5: ensure device failure recorded before write request returns. md/raid5: use bio_list for the list of bios to return. md/raid10: ensure device failure recorded before write request returns. md/raid1: ensure device failure recorded before write request returns. md-cluster: remove inappropriate try_module_get from join() md: extend spinlock protection in register_md_cluster_operations md-cluster: Read the disk bitmap sb and check if it needs recovery md-cluster: only call complete(&cinfo->completion) when node join cluster md-cluster: add missed lockres_free md-cluster: remove the unused sb_lock md-cluster: init suspend_list and suspend_lock early in join md-cluster: add the error check if failed to get dlm lock md-cluster: init completion within lockres_init md-cluster: fix deadlock issue on message lock md-cluster: transfer the resync ownership to another node md-cluster: split recover_slot for future code reuse md-cluster: use %pU to print UUIDs md: setup safemode_timer before it's being used md/raid5: handle possible race as reshape completes. md: sync sync_completed has correct value as recovery finishes. ...
2015-09-05Merge tag 'nfsd-4.3' of git://linux-nfs.org/~bfields/linuxLinus Torvalds1-9/+7
Pull nfsd updates from Bruce Fields: "Nothing major, but: - Add Jeff Layton as an nfsd co-maintainer: no change to existing practice, just an acknowledgement of the status quo. - Two patches ("nfsd: ensure that...") for a race overlooked by the state locking rewrite, causing a crash noticed by multiple users. - Lots of smaller bugfixes all over from Kinglong Mee. - From Jeff, some cleanup of server rpc code in preparation for possible shift of nfsd threads to workqueues" * tag 'nfsd-4.3' of git://linux-nfs.org/~bfields/linux: (52 commits) nfsd: deal with DELEGRETURN racing with CB_RECALL nfsd: return CLID_INUSE for unexpected SETCLIENTID_CONFIRM case nfsd: ensure that delegation stateid hash references are only put once nfsd: ensure that the ol stateid hash reference is only put once net: sunrpc: fix tracepoint Warning: unknown op '->' nfsd: allow more than one laundry job to run at a time nfsd: don't WARN/backtrace for invalid container deployment. fs: fix fs/locks.c kernel-doc warning nfsd: Add Jeff Layton as co-maintainer NFSD: Return word2 bitmask if setting security label in OPEN/CREATE NFSD: Set the attributes used to store the verifier for EXCLUSIVE4_1 nfsd: SUPPATTR_EXCLCREAT must be encoded before SECURITY_LABEL. nfsd: Fix an FS_LAYOUT_TYPES/LAYOUT_TYPES encode bug NFSD: Store parent's stat in a separate value nfsd: Fix two typos in comments lockd: NLM grace period shouldn't block NFSv4 opens nfsd: include linux/nfs4.h in export.h sunrpc: Switch to using hash list instead single list sunrpc/nfsd: Remove redundant code by exports seq_operations functions sunrpc: Store cache_detail in seq_file's private directly ...
2015-09-05Merge branch 'akpm' (patches from Andrew)Linus Torvalds3-0/+185
Merge patch-bomb from Andrew Morton: - a few misc things - Andy's "ambient capabilities" - fs/nofity updates - the ocfs2 queue - kernel/watchdog.c updates and feature work. - some of MM. Includes Andrea's userfaultfd feature. [ Hadn't noticed that userfaultfd was 'default y' when applying the patches, so that got fixed in this merge instead. We do _not_ mark new features that nobody uses yet 'default y' - Linus ] * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits) mm/hugetlb.c: make vma_has_reserves() return bool mm/madvise.c: make madvise_behaviour_valid() return bool mm/memory.c: make tlb_next_batch() return bool mm/dmapool.c: change is_page_busy() return from int to bool mm: remove struct node_active_region mremap: simplify the "overlap" check in mremap_to() mremap: don't do uneccesary checks if new_len == old_len mremap: don't do mm_populate(new_addr) on failure mm: move ->mremap() from file_operations to vm_operations_struct mremap: don't leak new_vma if f_op->mremap() fails mm/hugetlb.c: make vma_shareable() return bool mm: make GUP handle pfn mapping unless FOLL_GET is requested mm: fix status code which move_pages() returns for zero page mm: memcontrol: bring back the VM_BUG_ON() in mem_cgroup_swapout() genalloc: add support of multiple gen_pools per device genalloc: add name arg to gen_pool_get() and devm_gen_pool_create() mm/memblock: WARN_ON when nid differs from overlap region Documentation/features/vm: add feature description and arch support status for batched TLB flush after unmap mm: defer flush of writable TLB entries mm: send one IPI per CPU to TLB flush all entries after unmapping pages ...
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