- 25 Mar, 2016 25 commits
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Michal Hocko authored
When oom_reaper manages to unmap all the eligible vmas there shouldn't be much of the freable memory held by the oom victim left anymore so it makes sense to clear the TIF_MEMDIE flag for the victim and allow the OOM killer to select another task. The lack of TIF_MEMDIE also means that the victim cannot access memory reserves anymore but that shouldn't be a problem because it would get the access again if it needs to allocate and hits the OOM killer again due to the fatal_signal_pending resp. PF_EXITING check. We can safely hide the task from the OOM killer because it is clearly not a good candidate anymore as everyhing reclaimable has been torn down already. This patch will allow to cap the time an OOM victim can keep TIF_MEMDIE and thus hold off further global OOM killer actions granted the oom reaper is able to take mmap_sem for the associated mm struct. This is not guaranteed now but further steps should make sure that mmap_sem for write should be blocked killable which will help to reduce such a lock contention. This is not done by this patch. Note that exit_oom_victim might be called on a remote task from __oom_reap_task now so we have to check and clear the flag atomically otherwise we might race and underflow oom_victims or wake up waiters too early. Signed-off-by: Michal Hocko <mhocko@suse.com> Suggested-by: Johannes Weiner <hannes@cmpxchg.org> Suggested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Andrea Argangeli <andrea@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Michal Hocko authored
This patch (of 5): This is based on the idea from Mel Gorman discussed during LSFMM 2015 and independently brought up by Oleg Nesterov. The OOM killer currently allows to kill only a single task in a good hope that the task will terminate in a reasonable time and frees up its memory. Such a task (oom victim) will get an access to memory reserves via mark_oom_victim to allow a forward progress should there be a need for additional memory during exit path. It has been shown (e.g. by Tetsuo Handa) that it is not that hard to construct workloads which break the core assumption mentioned above and the OOM victim might take unbounded amount of time to exit because it might be blocked in the uninterruptible state waiting for an event (e.g. lock) which is blocked by another task looping in the page allocator. This patch reduces the probability of such a lockup by introducing a specialized kernel thread (oom_reaper) which tries to reclaim additional memory by preemptively reaping the anonymous or swapped out memory owned by the oom victim under an assumption that such a memory won't be needed when its owner is killed and kicked from the userspace anyway. There is one notable exception to this, though, if the OOM victim was in the process of coredumping the result would be incomplete. This is considered a reasonable constrain because the overall system health is more important than debugability of a particular application. A kernel thread has been chosen because we need a reliable way of invocation so workqueue context is not appropriate because all the workers might be busy (e.g. allocating memory). Kswapd which sounds like another good fit is not appropriate as well because it might get blocked on locks during reclaim as well. oom_reaper has to take mmap_sem on the target task for reading so the solution is not 100% because the semaphore might be held or blocked for write but the probability is reduced considerably wrt. basically any lock blocking forward progress as described above. In order to prevent from blocking on the lock without any forward progress we are using only a trylock and retry 10 times with a short sleep in between. Users of mmap_sem which need it for write should be carefully reviewed to use _killable waiting as much as possible and reduce allocations requests done with the lock held to absolute minimum to reduce the risk even further. The API between oom killer and oom reaper is quite trivial. wake_oom_reaper updates mm_to_reap with cmpxchg to guarantee only NULL->mm transition and oom_reaper clear this atomically once it is done with the work. This means that only a single mm_struct can be reaped at the time. As the operation is potentially disruptive we are trying to limit it to the ncessary minimum and the reaper blocks any updates while it operates on an mm. mm_struct is pinned by mm_count to allow parallel exit_mmap and a race is detected by atomic_inc_not_zero(mm_users). Signed-off-by: Michal Hocko <mhocko@suse.com> Suggested-by: Oleg Nesterov <oleg@redhat.com> Suggested-by: Mel Gorman <mgorman@suse.de> Acked-by: Mel Gorman <mgorman@suse.de> Acked-by: David Rientjes <rientjes@google.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Andrea Argangeli <andrea@kernel.org> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Andrew Morton authored
This will be needed in the patch "mm, oom: introduce oom reaper". Acked-by: Michal Hocko <mhocko@suse.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
This reverts commit e7223f18. It causes problems when a ppdev tries to register before the parport driver has been registered with the device model. That will trigger the BUG_ON(!drv->bus->p); at drivers/base/driver.c:153. The call chain is kernel_init -> kernel_init_freeable -> do_one_initcall -> ppdev_init -> __parport_register_driver -> driver_register *BOOM* Reported-by: kernel test robot <fengguang.wu@intel.com> Reported-by: Ross Zwisler <zwisler@gmail.com> Reported-by: Petr Mladek <pmladek@suse.com> Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394Linus Torvalds authored
Pull firewire leftover from Stefan Richter: "Occurrences of timeval were supposed to be eliminated last round, now remove a last forgotten one" * tag 'firewire-update2' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394: firewire: nosy: Replace timeval with timespec64
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull drm fixes from Dave Airlie: "Just a couple of dma-buf related fixes and some amdgpu fixes, along with a regression fix for radeon off but default feature, but makes my 30" monitor happy again" * 'drm-next' of git://people.freedesktop.org/~airlied/linux: drm/radeon/mst: cleanup code indentation drm/radeon/mst: fix regression in lane/link handling. drm/amdgpu: add invalidate_page callback for userptrs drm/amdgpu: Revert "remove the userptr rmn->lock" drm/amdgpu: clean up path handling for powerplay drm/amd/powerplay: fix memory leak of tdp_table dma-buf/fence: fix fence_is_later v2 dma-buf: Update docs for SYNC ioctl drm: remove excess description dma-buf, drm, ion: Propagate error code from dma_buf_start_cpu_access() drm/atmel-hlcdc: use helper to get crtc state drm/atomic: use helper to get crtc state
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git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-genericLinus Torvalds authored
Pull asm-generic updates from Arnd Bergmann: "There are only three patches this time, most other changes to files in include/asm-generic tend to go through the tree of whoever depends on the change. Two patches are cleanups for stuff that is no longer needed, the main change is to adapt the generic version of BUG_ON() for CONFIG_BUG=n to make it behave consistently with BUG(). This avoids undefined behavior along with a number of warnings about that undefined behavior in randconfig builds when we keep going on after hitting a BUG_ON()" * tag 'asm-generic-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: asm-generic: remove old nonatomic-io wrapper files asm-generic: default BUG_ON(x) to if(x)BUG() asm-generic: page.h: Remove useless get_user_page and free_user_page
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git://people.freedesktop.org/~agd5f/linuxDave Airlie authored
some amd fixes * 'drm-next-4.6' of git://people.freedesktop.org/~agd5f/linux: drm/radeon/mst: cleanup code indentation drm/radeon/mst: fix regression in lane/link handling. drm/amdgpu: add invalidate_page callback for userptrs drm/amdgpu: Revert "remove the userptr rmn->lock" drm/amdgpu: clean up path handling for powerplay drm/amd/powerplay: fix memory leak of tdp_table
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull more power management and ACPI updates from Rafael Wysocki: "The second batch of power management and ACPI updates for v4.6. Included are fixups on top of the previous PM/ACPI pull request and other material that didn't make into it but still should go into 4.6. Among other things, there's a fix for an intel_pstate driver issue uncovered by recent cpufreq changes, a workaround for a boot hang on Skylake-H related to the handling of deep C-states by the platform and a PCI/ACPI fix for the handling of IO port resources on non-x86 architectures plus some new device IDs and similar. Specifics: - Fix for an intel_pstate driver issue related to the handling of MSR updates uncovered by the recent cpufreq rework (Rafael Wysocki). - cpufreq core cleanups related to starting governors and frequency synchronization during resume from system suspend and a locking fix for cpufreq_quick_get() (Rafael Wysocki, Richard Cochran). - acpi-cpufreq and powernv cpufreq driver updates (Jisheng Zhang, Michael Neuling, Richard Cochran, Shilpasri Bhat). - intel_idle driver update preventing some Skylake-H systems from hanging during initialization by disabling deep C-states mishandled by the platform in the problematic configurations (Len Brown). - Intel Xeon Phi Processor x200 support for intel_idle (Dasaratharaman Chandramouli). - cpuidle menu governor updates to make it always honor PM QoS latency constraints (and prevent C1 from being used as the fallback C-state on x86 when they are set below its exit latency) and to restore the previous behavior to fall back to C1 if the next timer event is set far enough in the future that was changed in 4.4 which led to an energy consumption regression (Rik van Riel, Rafael Wysocki). - New device ID for a future AMD UART controller in the ACPI driver for AMD SoCs (Wang Hongcheng). - Rockchip rk3399 support for the rockchip-io-domain adaptive voltage scaling (AVS) driver (David Wu). - ACPI PCI resources management fix for the handling of IO space resources on architectures where the IO space is memory mapped (IA64 and ARM64) broken by the introduction of common ACPI resources parsing for PCI host bridges in 4.4 (Lorenzo Pieralisi). - Fix for the ACPI backend of the generic device properties API to make it parse non-device (data node only) children of an ACPI device correctly (Irina Tirdea). - Fixes for the handling of global suspend flags (introduced in 4.4) during hibernation and resume from it (Lukas Wunner). - Support for obtaining configuration information from Device Trees in the PM clocks framework (Jon Hunter). - ACPI _DSM helper code and devfreq framework cleanups (Colin Ian King, Geert Uytterhoeven)" * tag 'pm+acpi-4.6-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (23 commits) PM / AVS: rockchip-io: add io selectors and supplies for rk3399 intel_idle: Support for Intel Xeon Phi Processor x200 Product Family intel_idle: prevent SKL-H boot failure when C8+C9+C10 enabled ACPI / PM: Runtime resume devices when waking from hibernate PM / sleep: Clear pm_suspend_global_flags upon hibernate cpufreq: governor: Always schedule work on the CPU running update cpufreq: Always update current frequency before startig governor cpufreq: Introduce cpufreq_update_current_freq() cpufreq: Introduce cpufreq_start_governor() cpufreq: powernv: Add sysfs attributes to show throttle stats cpufreq: acpi-cpufreq: make Intel/AMD MSR access, io port access static PCI: ACPI: IA64: fix IO port generic range check ACPI / util: cast data to u64 before shifting to fix sign extension cpufreq: powernv: Define per_cpu chip pointer to optimize hot-path cpuidle: menu: Fall back to polling if next timer event is near cpufreq: acpi-cpufreq: Clean up hot plug notifier callback intel_pstate: Do not call wrmsrl_on_cpu() with disabled interrupts cpufreq: Make cpufreq_quick_get() safe to call ACPI / property: fix data node parsing in acpi_get_next_subnode() ACPI / APD: Add device HID for future AMD UART controller ...
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git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linuxLinus Torvalds authored
Pull more RTC updates from Alexandre Belloni: "A second pull request for v4.6 with a few fixesi before -rc1. The new features for abx80x actually make the RTC behave correctly. Drivers: - abx80x: handle both XT and RC oscillators, XT failure bit and autocalibration - m41t80: avoid out of range year values - rv8803: workaround an i2c HW issue" * tag 'rtc-4.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: rtc: abx80x: handle the oscillator failure bit rtc: abx80x: handle autocalibration rtc: rv8803: workaround i2c HW issue rtc: mcp795: add devicetree support rtc: asm9260: remove incorrect __init/__exit annotations rtc: m41t80: avoid out of range year values rtc: s3c: Don't print an error on probe deferral rtc: rv3029: stop mentioning rv3029c2
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Linus Torvalds authored
Merge tag 'hwmon-for-linus-v4.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull more hwmon updates from Guenter Roeck: "Update hwmon mailing list and web page" * tag 'hwmon-for-linus-v4.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: MAINTAINERS: Update mailing list and web page for hwmon subsystem
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: "Final round of fixes for this merge window - some of this has come up after the initial pull request, and some of it was put in a post-merge branch before the merge window. This contains: - Fix for a bad check for an error on dma mapping in the mtip32xx driver, from Alexey Khoroshilov. - A set of fixes for lightnvm, from Javier, Matias, and Wenwei. - An NVMe completion record corruption fix from Marta, ensuring that we read things in the right order. - Two writeback fixes from Tejun, marked for stable@ as well. - A blk-mq sw queue iterator fix from Thomas, fixing an oops for sparse CPU maps. They hit this in the hot plug/unplug rework" * 'for-linus' of git://git.kernel.dk/linux-block: nvme: avoid cqe corruption when update at the same time as read writeback, cgroup: fix use of the wrong bdi_writeback which mismatches the inode writeback, cgroup: fix premature wb_put() in locked_inode_to_wb_and_lock_list() blk-mq: Use proper cpumask iterator mtip32xx: fix checks for dma mapping errors lightnvm: do not load L2P table if not supported lightnvm: do not reserve lun on l2p loading nvme: lightnvm: return ppa completion status lightnvm: add a bitmap of luns lightnvm: specify target's logical address area null_blk: add lightnvm null_blk device to the nullb_list
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git://git.infradead.org/linux-mtdLinus Torvalds authored
Pull MTD updates from Brian Norris: "NAND: - Add sunxi_nand randomizer support - begin refactoring NAND ecclayout structs - fix pxa3xx_nand dmaengine usage - brcmnand: fix support for v7.1 controller - add Qualcomm NAND controller driver SPI NOR: - add new ls1021a, ls2080a support to Freescale QuadSPI - add new flash ID entries - support bottom-block protection for Winbond flash - support Status Register Write Protect - remove broken QPI support for Micron SPI flash JFFS2: - improve post-mount CRC scan efficiency General: - refactor bcm63xxpart parser, to later extend for NAND - add writebuf size parameter to mtdram Other minor code quality improvements" * tag 'for-linus-20160324' of git://git.infradead.org/linux-mtd: (72 commits) mtd: nand: remove kerneldoc for removed function parameter mtd: nand: Qualcomm NAND controller driver dt/bindings: qcom_nandc: Add DT bindings mtd: nand: don't select chip in nand_chip's block_bad op mtd: spi-nor: support lock/unlock for a few Winbond chips mtd: spi-nor: add TB (Top/Bottom) protect support mtd: spi-nor: add SPI_NOR_HAS_LOCK flag mtd: spi-nor: use BIT() for flash_info flags mtd: spi-nor: disallow further writes to SR if WP# is low mtd: spi-nor: make lock/unlock bounds checks more obvious and robust mtd: spi-nor: silently drop lock/unlock for already locked/unlocked region mtd: spi-nor: wait for SR_WIP to clear on initial unlock mtd: nand: simplify nand_bch_init() usage mtd: mtdswap: remove useless if (!mtd->ecclayout) test mtd: create an mtd_oobavail() helper and make use of it mtd: kill the ecclayout->oobavail field mtd: nand: check status before reporting timeout mtd: bcm63xxpart: give width specifier an 'int', not 'size_t' mtd: mtdram: Add parameter for setting writebuf size mtd: nand: pxa3xx_nand: kill unused field 'drcmr_cmd' ...
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git://git.infradead.org/linux-ubifsLinus Torvalds authored
Pull UBI/UBIFS updates from Richard Weinberger: "This contains cleanups and a maintainer update for UBI and UBIFS" * tag 'upstream-4.6-rc1' of git://git.infradead.org/linux-ubifs: ubifs: Remove unused header MAINTAINERS: Update UBIFS entry mtd: ubi: Add logging functions ubi_msg, ubi_warn and ubi_err ubifs: Add logging functions for ubifs_msg, ubifs_err and ubifs_warn
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git://linux-nfs.org/~bfields/linuxLinus Torvalds authored
Pull more nfsd updates from Bruce Fields: "Apologies for the previous request, which omitted the top 8 commits from my for-next branch (including the SCSI layout commits). Thanks to Trond for spotting my error!" This actually includes the new layout types, so here's that part of the pull message repeated: "Support for a new pnfs layout type from Christoph Hellwig. The new layout type is a variant of the block layout which uses SCSI features to offer improved fencing and device identification. Note this pull request also includes the client side of SCSI layout, with Trond's permission" * tag 'nfsd-4.6-1' of git://linux-nfs.org/~bfields/linux: nfsd: use short read as well as i_size to set eof nfsd: better layoutupdate bounds-checking nfsd: block and scsi layout drivers need to depend on CONFIG_BLOCK nfsd: add SCSI layout support nfsd: move some blocklayout code nfsd: add a new config option for the block layout driver nfs/blocklayout: add SCSI layout support nfs4.h: add SCSI layout definitions
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuildLinus Torvalds authored
Pull kbuild misc updates from Michal Marek: "The non-critical part of kbuild for v4.6-rc1: - coccinelle cleanup and a new patch - make tags rule for kprobe helpers - make rpm fix to avoid spurious grub2 entries - make rpm support for %postun script (Fedora only at the moment)" * 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild/mkspec: clean boot loader configuration on rpm removal kbuild/mkspec: fix grub2 installkernel issue Coccinelle: Add api/setup_timer.cocci coccinelle: bugon: reduce rule applicability Coccinelle: pm_runtime: reduce rule applicability Coccinelle: array_size: reduce rule applicability Coccinelle: reduce rule applicability scripts/tags.sh: add regex to map kprobe helpers scripts/coccinelle: modernize &
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuildLinus Torvalds authored
Pull kconfig updates from Michal Marek: "Just two kconfig commits this time: - kconfig Makefile fix for make 3.80 - Fix calculating symbols so that KCONFIG_ALLCONFIG=... does not disable CONFIG_MODULES silently" * 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: unbreak allmodconfig KCONFIG_ALLCONFIG=... scripts/kconfig: allow building with make 3.80 again
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuildLinus Torvalds authored
Pull kbuild updates from Michal Marek: - make dtbs_install fix - Error handling fix fixdep and link-vmlinux.sh - __UNIQUE_ID fix for clang - Fix for if_changed_* to suppress the "is up to date." message - The kernel is built with -Werror=incompatible-pointer-types * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild: Add option to turn incompatible pointer check into error kbuild: suppress annoying "... is up to date." message kbuild: fixdep: Check fstat(2) return value scripts/link-vmlinux.sh: force error on kallsyms failure Kbuild: provide a __UNIQUE_ID for clang dtbsinstall: don't move target directory out of the way
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linuxLinus Torvalds authored
Pull parisc updates from Helge Deller: "This patchset adds stack usage debug info for parisc and metag (on both the stack grows upwards), switches to the new generic realative extable search and sort routines, drops the long time ago removed syscalls alloc_hugepages and free_hugepages and wires up the new preadv2 and pwritev2 syscalls" * 'parisc-4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Wire up preadv2 and pwritev2 syscalls parisc: Use generic extable search and sort routines parisc: Panic immediately when panic_on_oops parisc,metag: Implement CONFIG_DEBUG_STACK_USAGE option parisc: Drop alloc_hugepages and free_hugepages syscalls
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull second set of arm64 updates from Catalin Marinas: - KASLR bug fixes: use callee-saved register, boot-time I-cache maintenance - inv_entry asm macro fix (EL0 check typo) - pr_notice("Virtual kernel memory layout...") splitting - Clean-ups: use p?d_set_huge consistently, allow preemption around copy_to_user_page, remove unused __local_flush_icache_all() * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: mm: allow preemption in copy_to_user_page arm64: consistently use p?d_set_huge arm64: kaslr: use callee saved register to preserve SCTLR across C call arm64: Split pr_notice("Virtual kernel memory layout...") into multiple pr_cont() arm64: drop unused __local_flush_icache_all() arm64: fix KASLR boot-time I-cache maintenance arm64/kernel: fix incorrect EL0 check in inv_entry macro
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds authored
Pull more ARM DT changes from Arnd Bergmann: "Here are some final updates for ARM SoC specific dts files: - The i.MX changes were sent relatively late, and had a dependency on the clk tree, so I delayed that a bit. Support for the new i.MX6qp SoC and a couple of new boards is added in this branch. - Uniphier renames a few files to match the final product names that were decided by the company, kudos to the kernel developer(s) for getting support upstream before the product release. Also two boards are added. The patches were posted early enough and nice overall, but we forgot to apply them and decided to give it some more time in linux-next - at91 has two small bug fixes" * tag 'armsoc-dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (83 commits) ARM: dts: at91: sama5d4 Xplained: don't disable hsmci regulator ARM: dts: at91: sama5d3 Xplained: don't disable hsmci regulator ARM: dts: uniphier: add pinmux node for I2C ch4 ARM: dts: uniphier: add @{address} to EEPROM node ARM: dts: uniphier: add PH1-Pro4 Sanji board support ARM: dts: uniphier: add PH1-Pro4 Ace board support ARM: dts: uniphier: enable I2C channel 2 of ProXstream2 Gentil board ARM: dts: uniphier: add EEPROM node for ProXstream2 Gentil board ARM: dts: uniphier: add reference clock nodes ARM: dts: uniphier: rework UniPhier System Bus nodes ARM: dts: uniphier: factor out ranges property of support card arm64: dts: uniphier: rename PH1-LD10 to PH1-LD20 ARM: dts: imx53-qsb: Fix gpio button polarity ARM: dts: vfxxx: Add DAC node for Vybrid SoC ARM: dts: imx6q: add missing links between ipu2 and mipi dsi ARM: dts: imx: Add support for Advantech/GE B850v3 ARM: dts: imx: Add support for Advantech/GE B650v3 ARM: dts: imx: Add support for Advantech/GE B450v3 ARM: dts: imx: Add support for Advantech/GE Bx50v3 ARM: dts: imx: Add Advantech BA-16 Qseven module ...
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git://git.osdn.jp/gitroot/uclinux-h8/linuxLinus Torvalds authored
Pull h8300 updates from Yoshinori Sato: "Various h8300 fixes" * tag 'for-4.6' of git://git.osdn.jp/gitroot/uclinux-h8/linux: h8300: switch EARLYCON h8300: dts: Rename the serial port clock to fck
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Mylène Josserand authored
Handle the Oscillator Failure ('OF') bit from Oscillator Status register (0x1D). This bit is cleared on set_time function and is read each time the date/time is read, but only in case of XT Oscillator selection. In RC mode, this bit is always set. Signed-off-by: Mylène Josserand <mylene.josserand@free-electrons.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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Mylène Josserand authored
The autocalibration is separated in two bits to set in Oscillator Control register (0x1c) : - OSEL bit to select the oscillator type (XT or RC). - ACAL bit to select the autocalibration type. These functionnalities are exported in sysfs entries : "oscillator" and "autocalibration". Respectively, the values are "xtal" for XT oscillator and "rc" for RC oscillator and 0 to disable the autocalibration cycle, 512 for a 512 seconds autocalibration cycle and 1024 for a cycle of 1024 seconds. Examples : Set to XT Oscillator echo xtal > /sys/class/rtc/rtc0/device/oscillator Activate an autocalibration every 512 seconds echo 512 > /sys/class/rtc/rtc0/device/autocalibration Signed-off-by: Mylène Josserand <mylene.josserand@free-electrons.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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Alexandre Belloni authored
The rv8803 has a 60µs window where it will not answer on the i2c bus. It also means there will be no ack for the communication. Make sure communication is tried multiple times when this happens (the i2c subsystem mandates -ENXIO is that case but the number of retries is host specific). The critical parts are the probe function and the alarm callback so make sure we handle the failure there. Cc: stable@vger.kernel.org # v4.4 Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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- 24 Mar, 2016 15 commits
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Rafael J. Wysocki authored
* acpi-soc: ACPI / APD: Add device HID for future AMD UART controller * acpi-misc: ACPI / util: cast data to u64 before shifting to fix sign extension * acpi-pci: PCI: ACPI: IA64: fix IO port generic range check * device-properties: ACPI / property: fix data node parsing in acpi_get_next_subnode()
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Rafael J. Wysocki authored
* pm-avs: PM / AVS: rockchip-io: add io selectors and supplies for rk3399 * pm-clk: PM / clk: Add support for obtaining clocks from device-tree * pm-devfreq: PM / devfreq: Spelling s/frequnecy/frequency/ * pm-sleep: ACPI / PM: Runtime resume devices when waking from hibernate PM / sleep: Clear pm_suspend_global_flags upon hibernate
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Rafael J. Wysocki authored
* pm-cpufreq: cpufreq: governor: Always schedule work on the CPU running update cpufreq: Always update current frequency before startig governor cpufreq: Introduce cpufreq_update_current_freq() cpufreq: Introduce cpufreq_start_governor() cpufreq: powernv: Add sysfs attributes to show throttle stats cpufreq: acpi-cpufreq: make Intel/AMD MSR access, io port access static cpufreq: powernv: Define per_cpu chip pointer to optimize hot-path cpufreq: acpi-cpufreq: Clean up hot plug notifier callback intel_pstate: Do not call wrmsrl_on_cpu() with disabled interrupts cpufreq: Make cpufreq_quick_get() safe to call * pm-cpuidle: intel_idle: Support for Intel Xeon Phi Processor x200 Product Family intel_idle: prevent SKL-H boot failure when C8+C9+C10 enabled cpuidle: menu: Fall back to polling if next timer event is near cpuidle: menu: use high confidence factors only when considering polling
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Guenter Roeck authored
The old web page for the hwmon subsystem is no longer operational, and the mailing list has become unreliable. Move both to kernel.org. Reviewed-by: Jean Delvare <jdelvare@suse.de> Cc: stable@vger.kernel.org Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-traceLinus Torvalds authored
Pull tracing updates from Steven Rostedt: "Nothing major this round. Mostly small clean ups and fixes. Some visible changes: - A new flag was added to distinguish traces done in NMI context. - Preempt tracer now shows functions where preemption is disabled but interrupts are still enabled. Other notes: - Updates were done to function tracing to allow better performance with perf. - Infrastructure code has been added to allow for a new histogram feature for recording live trace event histograms that can be configured by simple user commands. The feature itself was just finished, but needs a round in linux-next before being pulled. This only includes some infrastructure changes that will be needed" * tag 'trace-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (22 commits) tracing: Record and show NMI state tracing: Fix trace_printk() to print when not using bprintk() tracing: Remove redundant reset per-CPU buff in irqsoff tracer x86: ftrace: Fix the misleading comment for arch/x86/kernel/ftrace.c tracing: Fix crash from reading trace_pipe with sendfile tracing: Have preempt(irqs)off trace preempt disabled functions tracing: Fix return while holding a lock in register_tracer() ftrace: Use kasprintf() in ftrace_profile_tracefs() ftrace: Update dynamic ftrace calls only if necessary ftrace: Make ftrace_hash_rec_enable return update bool tracing: Fix typoes in code comment and printk in trace_nop.c tracing, writeback: Replace cgroup path to cgroup ino tracing: Use flags instead of bool in trigger structure tracing: Add an unreg_all() callback to trigger commands tracing: Add needs_rec flag to event triggers tracing: Add a per-event-trigger 'paused' field tracing: Add get_syscall_name() tracing: Add event record param to trigger_ops.func() tracing: Make event trigger functions available tracing: Make ftrace_event_field checking functions available ...
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git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linuxLinus Torvalds authored
Pull thermal updates from Zhang Rui: - Fix a regression where bogus trip points on some Lenovo laptops start to screw up thermal control after commit 81ad4276 ("Thermal: initialize thermal zone device correctly"). On these Lenovo laptops, a bogus passive trip point is reported, which is 0 degree Celsius. Without commit 81ad4276, thermal zone fails to set cooling devices to proper cooling state, which is a bug. But with commit 81ad4276 applied, the processors are always throttled on these Lenovo laptops because the current temperature is always higher than the passive trip point. Fix things to ignore such bogus trip points. (Zhang Rui) - Introduce Mediatek thermal driver. (Sascha Hauer) - Introduce devm_ versions of OF thermal sensor register API. (Laxman Dewangan) - Changes in Kconfigs to allow compile test on UM arch. (Krzysztof Kozlowski) - Introduce Skylake support in intel_pch_thermal driver. (Srinivas Pandruvada) - Several small fixes on Rockchip, TI-SoC, Tegra, RCar, and Exynos thermal drivers. * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (26 commits) Thermal: Ignore invalid trip points thermal: trace: migrating thermal traces to use TRACE_DEFINE_ENUM() macros thermal: intel_pch_thermal: Enable Skylake PCH thermal thermal: doc: Add details of devm_thermal_zone_of_sensor_{register,unregister} thermal: of-thermal: Add devm version of thermal_zone_of_sensor_register thermal: doc: Add details of thermal_zone_of_sensor_{register,unregister} thermal: exynos: Defer probe if vtmu is present but not registered thermal: exynos: Use devm_regulator_get_optional() for vtmu thermal: exynos: List vtmu-supply as optional property in DT binding thermal: exynos: Print a message about exceeded number of supported trip-points thermal: exynos: Document number of supported trip-points thermal: exynos: Document compatible for Exynos5433 TMU thermal: mtk: allow compile testing on UM thermal: tegra_soctherm: fix sign bit of temperature thermal: Fix build error of missing devm_ioremap_resource on UM thermal: ti-soc-thermal: clean up the error handling a bit thermal: rcar: Use ARCH_RENESAS thermal: rcar_thermal: don't open code of_device_get_match_data() thermal: db8500_cpufreq_cooling: Compile with COMPILE_TEST thermal: rockchip: fix the tsadc sequence output on rk3228/rk3399 ...
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git://linux-nfs.org/~bfields/linuxLinus Torvalds authored
Pull nfsd updates from Bruce Fields: "Various bugfixes, a RDMA update from Chuck Lever, and support for a new pnfs layout type from Christoph Hellwig. The new layout type is a variant of the block layout which uses SCSI features to offer improved fencing and device identification. (Also: note this pull request also includes the client side of SCSI layout, with Trond's permission.)" * tag 'nfsd-4.6' of git://linux-nfs.org/~bfields/linux: sunrpc/cache: drop reference when sunrpc_cache_pipe_upcall() detects a race nfsd: recover: fix memory leak nfsd: fix deadlock secinfo+readdir compound nfsd4: resfh unused in nfsd4_secinfo svcrdma: Use new CQ API for RPC-over-RDMA server send CQs svcrdma: Use new CQ API for RPC-over-RDMA server receive CQs svcrdma: Remove close_out exit path svcrdma: Hook up the logic to return ERR_CHUNK svcrdma: Use correct XID in error replies svcrdma: Make RDMA_ERROR messages work rpcrdma: Add RPCRDMA_HDRLEN_ERR svcrdma: svc_rdma_post_recv() should close connection on error svcrdma: Close connection when a send error occurs nfsd: Lower NFSv4.1 callback message size limit svcrdma: Do not send Write chunk XDR pad with inline content svcrdma: Do not write xdr_buf::tail in a Write chunk svcrdma: Find client-provided write and reply chunks once per reply nfsd: Update NFS server comments related to RDMA support nfsd: Fix a memory leak when meeting unsupported state_protect_how4 nfsd4: fix bad bounds checking
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/stagingLinus Torvalds authored
Pull staging driver fixes from Greg KH: "Here are some fixes that poped up due to the big staging tree merge, as well as the removal of a staging driver that now is covered by a "real" driver. All of these have been in linux-next for a few days with no reported issues" * tag 'staging-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: staging: delete STE RMI4 hackish driver staging: android: ion_test: fix check of platform_device_register_simple() error code staging: wilc1000: fix a couple of memory leaks staging: fsl-mc: fix incorrect type passed to dev_err macros staging: fsl-mc: fix incorrect type passed to dev_dbg macros staging: wilc1000: fixed kernel panic when firmware is not started staging: comedi: ni_mio_common: fix the ni_write[blw]() functions staging: most: hdm-dim2: Remove possible dereference error staging: lustre: checking for NULL instead of IS_ERR staging: lustre: really make lustre dependent on LNet staging: refresh TODO for rtl8712 staging: refresh TODO for rtl8723au
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer fix from Thomas Gleixner: "A single fix to the pistachio clocksource driver using the proper signedness in the error print format" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource/drivers/pistachio: Correct output format of PTR_ERR()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fixes from Thomas Gleixner: "A small set of fixes for the usual ARM/SOC irqchip drivers - A set of fixes for mbigen to handle multiple devices in a hardware module proper - A cleanup for the mbigen config option which was pointlessly user configurable. - A cleanup for tegra replacing open coded functionality by the proper core function The config cleanup touches arch/arm64/Kconfig.platforms to select the irq chip for the related platform" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/mbigen: Make CONFIG_HISILICON_IRQ_MBIGEN a hidden option ARM64: Kconfig: Select mbigen interrupt controller on Hisilicon platform irqchip/mbigen: Handle multiple device nodes in a mbigen module irqchip/mbigen: Adjust DT bindings to handle multiple devices in a module irqchip/tegra: Switch to use irq_domain_free_irqs_common
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Ingo Molnar: "This tree contains various perf fixes on the kernel side, plus three hw/event-enablement late additions: - Intel Memory Bandwidth Monitoring events and handling - the AMD Accumulated Power Mechanism reporting facility - more IOMMU events ... and a final round of perf tooling updates/fixes" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits) perf llvm: Use strerror_r instead of the thread unsafe strerror one perf llvm: Use realpath to canonicalize paths perf tools: Unexport some methods unused outside strbuf.c perf probe: No need to use formatting strbuf method perf help: Use asprintf instead of adhoc equivalents perf tools: Remove unused perf_pathdup, xstrdup functions perf tools: Do not include stringify.h from the kernel sources tools include: Copy linux/stringify.h from the kernel tools lib traceevent: Remove redundant CPU output perf tools: Remove needless 'extern' from function prototypes perf tools: Simplify die() mechanism perf tools: Remove unused DIE_IF macro perf script: Remove lots of unused arguments perf thread: Rename perf_event__preprocess_sample_addr to thread__resolve perf machine: Rename perf_event__preprocess_sample to machine__resolve perf tools: Add cpumode to struct perf_sample perf tests: Forward the perf_sample in the dwarf unwind test perf tools: Remove misplaced __maybe_unused perf list: Fix documentation of :ppp perf bench numa: Fix assertion for nodes bitfield ...
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Arnd Bergmann authored
Merge tag 'at91-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into next/dt2 Merge "First fixes batch for AT91 on 4.6 - DT only fixes" from Nicolas Ferre: - prevent the boards from having glitches when inserting/removing SD card on sama5d3/d4 Xplained. The regulators should be kept on. * tag 'at91-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91: ARM: dts: at91: sama5d4 Xplained: don't disable hsmci regulator ARM: dts: at91: sama5d3 Xplained: don't disable hsmci regulator ARM: dts: at91: sama5d2 Xplained: add leds node ARM: dts: at91: sama5d2 Xplained: add user push button ARM: dts: at91: sama5d2 Xplained: set pin muxing for usb gadget and usb host ARM: dts: at91: sama5d2: add nand0 and nfc0 nodes ARM: dts: at91: sama5d2: add dma properties to UART nodes ARM: dts: at91: sama5d2 Xplained: Correct the macb irq pinctrl node
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "Misc fixes: - fix hotplug bugs - fix irq live lock - fix various topology handling bugs - fix APIC ACK ordering - fix PV iopl handling - fix speling - fix/tweak memcpy_mcsafe() return value - fix fbcon bug - remove stray prototypes" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/msr: Remove unused native_read_tscp() x86/apic: Remove declaration of unused hw_nmi_is_cpu_stuck x86/oprofile/nmi: Add missing hotplug FROZEN handling x86/hpet: Use proper mask to modify hotplug action x86/apic/uv: Fix the hotplug notifier x86/apb/timer: Use proper mask to modify hotplug action x86/topology: Use total_cpus not nr_cpu_ids for logical packages x86/topology: Fix Intel HT disable x86/topology: Fix logical package mapping x86/irq: Cure live lock in fixup_irqs() x86/tsc: Prevent NULL pointer deref in calibrate_delay_is_known() x86/apic: Fix suspicious RCU usage in smp_trace_call_function_interrupt() x86/iopl: Fix iopl capability check on Xen PV x86/iopl/64: Properly context-switch IOPL on Xen PV selftests/x86: Add an iopl test x86/mm, x86/mce: Fix return type/value for memcpy_mcsafe() x86/video: Don't assume all FB devices are PCI devices arch/x86/irq: Purge useless handler declarations from hw_irq.h x86: Fix misspellings in comments
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Yoshinori Sato authored
earlyprintk is architecture specific option. earlycon is generic and small footprint. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
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Geert Uytterhoeven authored
The clock is really the device functional clock, not the interface clock. Rename it. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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