1. 20 8月, 2015 9 次提交
    • Y
      ARC: change some branchs to jumps to resolve linkage errors · 6de6066c
      Yuriy Kolerov 提交于
      When kernel's binary becomes large enough (32M and more) errors
      may occur during the final linkage stage. It happens because
      the build system uses short relocations for ARC  by default.
      This problem may be easily resolved by passing -mlong-calls
      option to GCC to use long absolute jumps (j) instead of short
      relative branchs (b).
      
      But there are fragments of pure assembler code exist which use
      branchs in inappropriate places and cause a linkage error because
      of relocations overflow.
      
      First of these fragments is .fixup insertion in futex.h and
      unaligned.c. It inserts a code in the separate section (.fixup)
      with branch instruction. It leads to the linkage error when
      kernel becomes large.
      
      Second of these fragments is calling scheduler's functions
      (common kernel code) from entry.S of ARC's code. When kernel's
      binary becomes large it may lead to the linkage error because
      scheduler may occur far enough from ARC's code in the final
      binary.
      Signed-off-by: NYuriy Kolerov <yuriy.kolerov@synopsys.com>
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      6de6066c
    • V
      ARC: ensure futex ops are atomic in !LLSC config · eb2cd8b7
      Vineet Gupta 提交于
      W/o hardware assisted atomic r-m-w the best we can do is to disable
      preemption.
      
      Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
      Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Michel Lespinasse <walken@google.com>
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      eb2cd8b7
    • V
      ARC: Enable HAVE_FUTEX_CMPXCHG · 5e057429
      Vineet Gupta 提交于
      ARC doesn't need the runtime detection of futex cmpxchg op
      
      Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      5e057429
    • V
      ARC: make futex_atomic_cmpxchg_inatomic() return bimodal · 882a95ae
      Vineet Gupta 提交于
      Callers of cmpxchg_futex_value_locked() in futex code expect bimodal
      return value:
        !0 (essentially -EFAULT as failure)
         0 (success)
      
      Before this patch, the success return value was old value of futex,
      which could very well be non zero, causing caller to possibly take the
      failure path erroneously.
      
      Fix that by returning 0 for success
      
      (This fix was done back in 2011 for all upstream arches, which ARC
      obviously missed)
      
      Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Michel Lespinasse <walken@google.com>
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      882a95ae
    • V
      ARC: futex cosmetics · ed574e2b
      Vineet Gupta 提交于
      Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Michel Lespinasse <walken@google.com>
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      ed574e2b
    • V
      ARC: add barriers to futex code · 31d30c82
      Vineet Gupta 提交于
      The atomic ops on futex need to provide the full barrier just like
      regular atomics in kernel.
      
      Also remove pagefault_enable/disable in futex_atomic_cmpxchg_inatomic()
      as core code already does that
      
      Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
      Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Michel Lespinasse <walken@google.com>
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      31d30c82
    • A
      ARCv2: IOC: Allow boot time disable · 1648c70d
      Alexey Brodkin 提交于
      Signed-off-by: NAlexey Brodkin <abrodkin@synopsys.com>
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      1648c70d
    • V
      ARCv2: SLC: Allow boot time disable · 79335a2c
      Vineet Gupta 提交于
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      79335a2c
    • A
      ARCv2: Support IO Coherency and permutations involving L1 and L2 caches · f2b0b25a
      Alexey Brodkin 提交于
      In case of ARCv2 CPU there're could be following configurations
      that affect cache handling for data exchanged with peripherals
      via DMA:
       [1] Only L1 cache exists
       [2] Both L1 and L2 exist, but no IO coherency unit
       [3] L1, L2 caches and IO coherency unit exist
      
      Current implementation takes care of [1] and [2].
      Moreover support of [2] is implemented with run-time check
      for SLC existence which is not super optimal.
      
      This patch introduces support of [3] and rework of DMA ops
      usage. Instead of doing run-time check every time a particular
      DMA op is executed we'll have 3 different implementations of
      DMA ops and select appropriate one during init.
      
      As for IOC support for it we need:
       [a] Implement empty DMA ops because IOC takes care of cache
           coherency with DMAed data
       [b] Route dma_alloc_coherent() via dma_alloc_noncoherent()
           This is required to make IOC work in first place and also
           serves as optimization as LD/ST to coherent buffers can be
           srviced from caches w/o going all the way to memory
      Signed-off-by: NAlexey Brodkin <abrodkin@synopsys.com>
      [vgupta:
        -Added some comments about IOC gains
        -Marked dma ops as static,
        -Massaged changelog a bit]
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      f2b0b25a
  2. 11 8月, 2015 2 次提交
  3. 10 8月, 2015 1 次提交
  4. 09 8月, 2015 4 次提交
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input · a230e95c
      Linus Torvalds 提交于
      Pull input subsystem fixes from Dmitry Torokhov:
       "Just small ALPS and Elan touchpads, and other driver fixups"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
        Input: elantech - add special check for fw_version 0x470f01 touchpad
        Input: twl4030-vibra - fix ERROR: Bad of_node_put() warning
        Input: alps - only Dell laptops have separate button bits for v2 dualpoint sticks
        Input: axp20x-pek - add module alias
        Input: turbografx - fix potential out of bound access
      a230e95c
    • L
      Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus · 3fbdc379
      Linus Torvalds 提交于
      Pull MIPS fixes from Ralf Baechle:
       "Another round of MIPS fixes for 4.2.  No area does particularly stand
        out but we have a two unpleasant ones:
      
         - Kernel ptes are marked with a global bit which allows the kernel to
           share kernel TLB entries between all processes.  For this to work
           both entries of an adjacent even/odd pte pair need to have the
           global bit set.  There has been a subtle race in setting the other
           entry's global bit since ~ 2000 but it take particularly
           pathological workloads that essentially do mostly vmalloc/vfree to
           trigger this.
      
           This pull request fixes the 64-bit case but leaves the case of 32
           bit CPUs with 64 bit ptes unsolved for now.  The unfixed cases
           affect hardware that is not available in the field yet.
      
         - Instruction emulation requires loading instructions from user space
           but the current fast but simplistic approach will fail on pages
           that are PROT_EXEC but !PROT_READ.  For this reason we temporarily
           do not permit this permission and will map pages with PROT_EXEC |
           PROT_READ.
      
        The remainder of this pull request is more or less across the field
        and the short log explains them well"
      
      * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
        MIPS: Make set_pte() SMP safe.
        MIPS: Replace add and sub instructions in relocate_kernel.S with addiu
        MIPS: Flush RPS on kernel entry with EVA
        Revert "MIPS: BCM63xx: Provide a plat_post_dma_flush hook"
        MIPS: BMIPS: Delete unused Kconfig symbol
        MIPS: Export get_c0_perfcount_int()
        MIPS: show_stack: Fix stack trace with EVA
        MIPS: do_mcheck: Fix kernel code dump with EVA
        MIPS: SMP: Don't increment irq_count multiple times for call function IPIs
        MIPS: Partially disable RIXI support.
        MIPS: Handle page faults of executable but unreadable pages correctly.
        MIPS: Malta: Don't reinitialise RTC
        MIPS: unaligned: Fix build error on big endian R6 kernels
        MIPS: Fix sched_getaffinity with MT FPAFF enabled
        MIPS: Fix build with CONFIG_OF=y for non OF-enabled targets
        CPUFREQ: Loongson2: Fix broken build due to incorrect include.
      3fbdc379
    • L
      Merge branch 'for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs · af0b3152
      Linus Torvalds 提交于
      Pull btrfs fix from Chris Mason:
       "We have a btrfs quota regression fix.
      
        I merged this one on Thursday and have run it through tests against
        current master.
      
        Normally I wouldn't have sent this while you were finalizing rc6, but
        I'm feeding mosquitoes in the adirondacks next week, so I wanted to
        get this one out before leaving.  I'll leave longer tests running and
        check on things during the week, but I don't expect any problems"
      
      * 'for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
        btrfs: qgroup: Fix a regression in qgroup reserved space.
      af0b3152
    • L
      Merge branch 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux · bae1577e
      Linus Torvalds 提交于
      Pull thermal management fixes from Zhang Rui:
       "Specifics:
      
         - fix an error that "weight_attr" sysfs attribute is not removed
           while unbinding.  From: Viresh Kumar.
      
         - fix power allocator governor tracing to return the real request.
           From Javi Merino.
      
         - remove redundant owner assignment of hisi platform thermal driver.
           From Krzysztof Kozlowski.
      
         - a couple of small fixes of Exynos thermal driver.  From Krzysztof
           Kozlowski and Chanwoo Choi"
      
      * 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
        thermal: Drop owner assignment from platform_driver
        thermal: exynos: Remove unused code related to platform_data on probe()
        thermal: exynos: Add the dependency of CONFIG_THERMAL_OF instead of CONFIG_OF
        thermal: exynos: Disable the regulator on probe failure
        thermal: power_allocator: trace the real requested power
        thermal: remove dangling 'weight_attr' device file
      bae1577e
  5. 08 8月, 2015 10 次提交
    • L
      Merge tag 'arc-v4.2-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc · dd2384a7
      Linus Torvalds 提交于
      Pull ARC fixes from Vineet Gupta:
       "Here's a late pull request for accumulated ARC fixes which came out of
        extended testing of the new ARCv2 port with LTP etc.  llock/scond
        livelock workaround has been reviewed by PeterZ.  The changes look a
        lot but I've crafted them into finer grained patches for better
        tracking later.
      
        I have some more fixes (ARC Futex backend) ready to go but those will
        have to wait for tglx to return from vacation.
      
        Summary:
         - Enable a reduced config of HS38 (w/o div-rem, ll64...)
         - Add software workaround for LLOCK/SCOND livelock
         - Fallout of a recent pt_regs update"
      
      * tag 'arc-v4.2-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
        ARCv2: spinlock/rwlock/atomics: reduce 1 instruction in exponential backoff
        ARC: Make pt_regs regs unsigned
        ARCv2: spinlock/rwlock: Reset retry delay when starting a new spin-wait cycle
        ARCv2: spinlock/rwlock/atomics: Delayed retry of failed SCOND with exponential backoff
        ARC: LLOCK/SCOND based rwlock
        ARC: LLOCK/SCOND based spin_lock
        ARC: refactor atomic inline asm operands with symbolic names
        Revert "ARCv2: STAR 9000837815 workaround hardware exclusive transactions livelock"
        ARCv2: [axs103_smp] Reduce clk for Quad FPGA configs
        ARCv2: Fix the peripheral address space detection
        ARCv2: allow selection of page size for MMUv4
        ARCv2: lib: memset: Don't assume 64-bit load/stores
        ARCv2: lib: memcpy: Missing PREFETCHW
        ARCv2: add knob for DIV_REV in Kconfig
        ARC/time: Migrate to new 'set-state' interface
      dd2384a7
    • L
      Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost · b3b98a55
      Linus Torvalds 提交于
      Pull virtio fix from Michael Tsirkin:
       "A last minute fix for the new virtio input driver.  It seems pretty
         obvious, and the problem it's fixing would be quite hard to debug"
      
      * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
        virtio-input: reset device and detach unused during remove
      b3b98a55
    • L
      Merge tag 'dm-4.2-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm · 39171c86
      Linus Torvalds 提交于
      Pull device mapper fixes from Mike Snitzer:
      
       - stable fix for a dm_merge_bvec() regression on 32 bit Fedora systems.
      
       - fix for a 4.2 DM thinp discard regression due to inability to
         properly delete a range of blocks in a data mapping btree.
      
      * tag 'dm-4.2-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
        dm btree remove: fix bug in remove_one()
        dm: fix dm_merge_bvec regression on 32 bit systems
      39171c86
    • L
      Merge tag 'sound-4.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · f0943013
      Linus Torvalds 提交于
      Pull sound fixes from Takashi Iwai:
       "The only bulk changes in this request is ABI updates for ASoC topology
        API.  It's a new API that was introduced in 4.2, and we'd like to
        avoid ABI change after the release, so it's taken now.  As there is no
        real in-tree user for this API, it should be fairly safe.
      
        Other than that, the usual small fixes are found in various drivers:
        ASoC cs4265, rt5645, intel-sst, firewire, oxygen and HD-audio"
      
      * tag 'sound-4.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ASoC: topology: Add private data type and bump ABI version to 3
        ASoC: topology: Add ops support to byte controls UAPI
        ASoC: topology: Update TLV support so we can support more TLV types
        ASoC: topology: add private data to manifest
        ASoC: topology: Add subsequence in topology
        ALSA: hda - one Dell machine needs the headphone white noise fixup
        ALSA: fireworks/firewire-lib: add support for recent firmware quirk
        Revert "ALSA: fireworks: add support for AudioFire2 quirk"
        ASoC: topology: fix typo in soc_tplg_kcontrol_bind_io()
        ALSA: HDA: Dont check return for snd_hdac_chip_readl
        ALSA: HDA: Fix stream assignment for host in decoupled mode
        ASoC: rt5645: Fix lost pin setting for DMIC1
        ALSA: oxygen: Fix logical-not-parentheses warning
        ASoC: Intel: sst_byt: fix initialize 'NULL device *' issue
        ASoC: Intel: haswell: fix initialize 'NULL device *' issue
        ASoC: cs4265: Fix setting dai format for Left/Right Justified
      f0943013
    • L
      Merge tag 'hwmon-for-linus-v4.2-rc6' of... · ea8dc1ab
      Linus Torvalds 提交于
      Merge tag 'hwmon-for-linus-v4.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
      
      Pull hwmon fixes from Guenter Roeck:
      
       - Export module alias information in g762 and nct7904 to support
         auto-loading.
      
       - Blacklist Dell Studio XPS 8100 in dell-smm to fix fan control
         problems.
      
      * tag 'hwmon-for-linus-v4.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
        hwmon: (g762) Export OF module alias information
        hwmon: (nct7904) Export I2C module alias information
        hwmon: (dell-smm) Blacklist Dell Studio XPS 8100
      ea8dc1ab
    • L
      Merge tag 'usb-4.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · d5a8ab40
      Linus Torvalds 提交于
      Pull USB fixes from Greg KH:
       "Here are some USB and PHY fixes for 4.2-rc6 that resolve some reported
        issues.
      
        All of these have been in the linux-next tree for a while, full
        details on the patches are in the shortlog below"
      
      * tag 'usb-4.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
        ARM: dts: dra7: Add syscon-pllreset syscon to SATA PHY
        drivers/usb: Delete XHCI command timer if necessary
        xhci: fix off by one error in TRB DMA address boundary check
        usb: udc: core: add device_del() call to error pathway
        phy: ti-pipe3: i783 workaround for SATA lockup after dpll unlock/relock
        phy-sun4i-usb: Add missing EXPORT_SYMBOL_GPL for sun4i_usb_phy_set_squelch_detect
        USB: sierra: add 1199:68AB device ID
        usb: gadget: f_printer: actually limit the number of instances
        usb: gadget: f_hid: actually limit the number of instances
        usb: gadget: f_uac2: fix calculation of uac2->p_interval
        usb: gadget: bdc: fix a driver crash on disconnect
        usb: chipidea: ehci_init_driver is intended to call one time
        USB: qcserial: Add support for Dell Wireless 5809e 4G Modem
        USB: qcserial/option: make AT URCs work for Sierra Wireless MC7305/MC7355
      d5a8ab40
    • L
      Merge tag 'staging-4.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging · 9f21a8bd
      Linus Torvalds 提交于
      Pull staging driver fixes from Greg KH:
       "Here are three bugfixes for some staging driver issues that have been
        reported.  All have been in the linux-next tree for a while"
      
      * tag 'staging-4.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
        staging: lustre: Include unaligned.h instead of access_ok.h
        staging: vt6655: vnt_bss_info_changed check conf->beacon_rate is not NULL
        staging: comedi: das1800: add missing break in switch
      9f21a8bd
    • L
      Merge tag 'char-misc-4.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc · 83c2768b
      Linus Torvalds 提交于
      Pull char/misc fixes from Greg KH:
       "Here are some extcon fixes for 4.2-rc6 that resolve some reported
        problems.
      
        All have been in linux-next for a while"
      
      * tag 'char-misc-4.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
        extcon: Fix extcon_cable_get_state() from getting old state after notification
        extcon: Fix hang and extcon_get/set_cable_state().
        extcon: palmas: Fix NULL pointer error
      83c2768b
    • L
      Merge tag 'drm-intel-fixes-2015-08-07' of git://anongit.freedesktop.org/drm-intel · 981dae74
      Linus Torvalds 提交于
      Pull drm fixes from Daniel Vetter:
       "One i915 regression fix and a drm core one since Dave's not around,
        both introduced in 4.2 so not cc: stable.
      
        The fix for the warning Ted reported isn't in here yet since he didn't
        yet supply a tested-by and I can't repro this one myself (it's in
        fixup code that needs firmware doing something i915 wouldn't do)"
      
      * tag 'drm-intel-fixes-2015-08-07' of git://anongit.freedesktop.org/drm-intel:
        drm/vblank: Use u32 consistently for vblank counters
        drm/i915: Allow parsing of variable size child device entries from VBT
      981dae74
    • D
      Input: elantech - add special check for fw_version 0x470f01 touchpad · 6b30c73e
      Duson Lin 提交于
      It is no need to check the packet[0] for sanity check when doing
      elantech_packet_check_v4() function for fw_version = 0x470f01 touchpad.
      
      Signed-off by: Duson Lin <dusonlin@emc.com.tw>
      Reviewed-by: NUlrik De Bie <ulrik.debie-os@e2big.org>
      Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
      6b30c73e
  6. 07 8月, 2015 14 次提交
    • J
      dm btree remove: fix bug in remove_one() · aa0cd28d
      Joe Thornber 提交于
      remove_one() was not incrementing the key for the beginning of the
      range, so not all entries were being removed.  This resulted in
      discards that were not unmapping all blocks.
      
      Fixes: 4ec331c3 ("dm btree: add dm_btree_remove_leaves()")
      Signed-off-by: NJoe Thornber <ejt@redhat.com>
      Signed-off-by: NMike Snitzer <snitzer@redhat.com>
      aa0cd28d
    • D
      drm/vblank: Use u32 consistently for vblank counters · 209e4dbc
      Daniel Vetter 提交于
      In
      
      commit 99264a61
      Author: Daniel Vetter <daniel.vetter@ffwll.ch>
      Date:   Wed Apr 15 19:34:43 2015 +0200
      
          drm/vblank: Fixup and document timestamp update/read barriers
      
      I've switched vblank->count from atomic_t to unsigned long and
      accidentally created an integer comparison bug in
      drm_vblank_count_and_time since vblanke->count might overflow the u32
      local copy and hence the retry loop never succeed.
      
      Fix this by consistently using u32.
      
      Cc: Michel Dänzer <michel@daenzer.net>
      Reported-by: NMichel Dänzer <michel@daenzer.net>
      Reviewed-by: NThierry Reding <treding@nvidia.com>
      Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
      209e4dbc
    • T
      Merge tag 'asoc-fix-v4.2-rc5' of... · 6ac7ada2
      Takashi Iwai 提交于
      Merge tag 'asoc-fix-v4.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
      
      ASoC: Fixes for v4.2
      
      There are a couple of small driver specific fixes here but the
      overwhelming bulk of these changes are fixes to the topology ABI that
      has been newly introduced in v4.2.  Once this makes it into a release we
      will have to firm this up but for now getting enhancements in before
      they've made it into a release is the most expedient thing.
      6ac7ada2
    • V
      ARCv2: spinlock/rwlock/atomics: reduce 1 instruction in exponential backoff · 10971638
      Vineet Gupta 提交于
      The increment of delay counter was 2 instructions:
      Arithmatic Shfit Left (ASL) + set to 1 on overflow
      
      This can be done in 1 using ROtate Left (ROL)
      Suggested-by: NNigel Topham <ntopham@synopsys.com>
      Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
      Cc: linux-kernel@vger.kernel.org
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      10971638
    • L
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc · 49d7c655
      Linus Torvalds 提交于
      Pull sparc fix from David Miller:
       "FPU register corruption bug fix"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
        sparc64: Fix userspace FPU register corruptions.
      49d7c655
    • L
      Merge branch 'akpm' (patches from Andrew) · 8664b90b
      Linus Torvalds 提交于
      Merge fixes from Andrew Morton:
       "21 fixes"
      
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (21 commits)
        writeback: fix initial dirty limit
        mm/memory-failure: set PageHWPoison before migrate_pages()
        mm: check __PG_HWPOISON separately from PAGE_FLAGS_CHECK_AT_*
        mm/memory-failure: give up error handling for non-tail-refcounted thp
        mm/memory-failure: fix race in counting num_poisoned_pages
        mm/memory-failure: unlock_page before put_page
        ipc: use private shmem or hugetlbfs inodes for shm segments.
        mm: initialize hotplugged pages as reserved
        ocfs2: fix shift left overflow
        kthread: export kthread functions
        fsnotify: fix oops in fsnotify_clear_marks_by_group_flags()
        lib/iommu-common.c: do not use 0xffffffffffffffffl for computing align_mask
        mm/slub: allow merging when SLAB_DEBUG_FREE is set
        signalfd: fix information leak in signalfd_copyinfo
        signal: fix information leak in copy_siginfo_to_user
        signal: fix information leak in copy_siginfo_from_user32
        ocfs2: fix BUG in ocfs2_downconvert_thread_do_work()
        fs, file table: reinit files_stat.max_files after deferred memory initialisation
        mm, meminit: replace rwsem with completion
        mm, meminit: allow early_pfn_to_nid to be used during runtime
        ...
      8664b90b
    • D
      sparc64: Fix userspace FPU register corruptions. · 44922150
      David S. Miller 提交于
      If we have a series of events from userpsace, with %fprs=FPRS_FEF,
      like follows:
      
      ETRAP
      	ETRAP
      		VIS_ENTRY(fprs=0x4)
      		VIS_EXIT
      		RTRAP (kernel FPU restore with fpu_saved=0x4)
      	RTRAP
      
      We will not restore the user registers that were clobbered by the FPU
      using kernel code in the inner-most trap.
      
      Traps allocate FPU save slots in the thread struct, and FPU using
      sequences save the "dirty" FPU registers only.
      
      This works at the initial trap level because all of the registers
      get recorded into the top-level FPU save area, and we'll return
      to userspace with the FPU disabled so that any FPU use by the user
      will take an FPU disabled trap wherein we'll load the registers
      back up properly.
      
      But this is not how trap returns from kernel to kernel operate.
      
      The simplest fix for this bug is to always save all FPU register state
      for anything other than the top-most FPU save area.
      
      Getting rid of the optimized inner-slot FPU saving code ends up
      making VISEntryHalf degenerate into plain VISEntry.
      
      Longer term we need to do something smarter to reinstate the partial
      save optimizations.  Perhaps the fundament error is having trap entry
      and exit allocate FPU save slots and restore register state.  Instead,
      the VISEntry et al. calls should be doing that work.
      
      This bug is about two decades old.
      Reported-by: NJames Y Knight <jyknight@google.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      44922150
    • L
      Merge branch 'drm-fixes-4.2' of git://people.freedesktop.org/~agd5f/linux · a58997e1
      Linus Torvalds 提交于
      Pull amdgpu fixes from Alex Deucher:
       "Just a few amdgpu fixes to make sure we report the proper firmware
        information and number of render buffers to userspace and a typo in a
        debugging function"
      
      [ Pulling directly from Alex since Dave Airlie is on vacation  - Linus ]
      
      * 'drm-fixes-4.2' of git://people.freedesktop.org/~agd5f/linux:
        drm/amdgpu: set fw_version and feature_version for smu fw loading
        drm/amdgpu: add feature version for SDMA ucode
        drm/amdgpu: add feature version for RLC and MEC v2
        drm/amdgpu: increment queue when iterating on this variable.
        drm/amdgpu: fix rb setting for CZ
      a58997e1
    • L
      Merge branch 'drm-tda998x-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm · ebc90be6
      Linus Torvalds 提交于
      Pull TDA998x i2c driver fixes from Russell King:
       "This fixes the double-checksumming of the AVI infoframe which was
        resulting in the checksum always being zero.  It went unnoticed as
        none of my HDMI devices had a problem with this"
      
      [ Pulling directly from rmk since Dave Airlie is on vacation  - Linus ]
      
      * 'drm-tda998x-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
        drm/i2c: tda998x: fix bad checksum of the HDMI AVI infoframe
      ebc90be6
    • R
      writeback: fix initial dirty limit · a50fcb51
      Rabin Vincent 提交于
      The initial value of global_wb_domain.dirty_limit set by
      writeback_set_ratelimit() is zeroed out by the memset in
      wb_domain_init().
      Signed-off-by: NRabin Vincent <rabin.vincent@axis.com>
      Acked-by: NTejun Heo <tj@kernel.org>
      Cc: Jens Axboe <axboe@fb.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      a50fcb51
    • N
      mm/memory-failure: set PageHWPoison before migrate_pages() · 4491f712
      Naoya Horiguchi 提交于
      Now page freeing code doesn't consider PageHWPoison as a bad page, so by
      setting it before completing the page containment, we can prevent the
      error page from being reused just after successful page migration.
      
      I added TTU_IGNORE_HWPOISON for try_to_unmap() to make sure that the
      page table entry is transformed into migration entry, not to hwpoison
      entry.
      Signed-off-by: NNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: Dean Nelson <dnelson@redhat.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
      Cc: Hugh Dickins <hughd@google.com>
      Cc: David Rientjes <rientjes@google.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      4491f712
    • N
      mm: check __PG_HWPOISON separately from PAGE_FLAGS_CHECK_AT_* · f4c18e6f
      Naoya Horiguchi 提交于
      The race condition addressed in commit add05cec ("mm: soft-offline:
      don't free target page in successful page migration") was not closed
      completely, because that can happen not only for soft-offline, but also
      for hard-offline.  Consider that a slab page is about to be freed into
      buddy pool, and then an uncorrected memory error hits the page just
      after entering __free_one_page(), then VM_BUG_ON_PAGE(page->flags &
      PAGE_FLAGS_CHECK_AT_PREP) is triggered, despite the fact that it's not
      necessary because the data on the affected page is not consumed.
      
      To solve it, this patch drops __PG_HWPOISON from page flag checks at
      allocation/free time.  I think it's justified because __PG_HWPOISON
      flags is defined to prevent the page from being reused, and setting it
      outside the page's alloc-free cycle is a designed behavior (not a bug.)
      
      For recent months, I was annoyed about BUG_ON when soft-offlined page
      remains on lru cache list for a while, which is avoided by calling
      put_page() instead of putback_lru_page() in page migration's success
      path.  This means that this patch reverts a major change from commit
      add05cec about the new refcounting rule of soft-offlined pages, so
      "reuse window" revives.  This will be closed by a subsequent patch.
      Signed-off-by: NNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: Dean Nelson <dnelson@redhat.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
      Cc: Hugh Dickins <hughd@google.com>
      Cc: David Rientjes <rientjes@google.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      f4c18e6f
    • N
      mm/memory-failure: give up error handling for non-tail-refcounted thp · 98ed2b00
      Naoya Horiguchi 提交于
      "non anonymous thp" case is still racy with freeing thp, which causes
      panic due to put_page() for refcount-0 page.  It seems that closing up
      this race might be hard (and/or not worth doing,) so let's give up the
      error handling for this case.
      Signed-off-by: NNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: Dean Nelson <dnelson@redhat.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
      Cc: Hugh Dickins <hughd@google.com>
      Cc: David Rientjes <rientjes@google.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      98ed2b00
    • N
      mm/memory-failure: fix race in counting num_poisoned_pages · a209ef09
      Naoya Horiguchi 提交于
      When memory_failure() is called on a page which are just freed after
      page migration from soft offlining, the counter num_poisoned_pages is
      raised twi= ce.  So let's fix it with using TestSetPageHWPoison.
      Signed-off-by: NNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: Dean Nelson <dnelson@redhat.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
      Cc: Hugh Dickins <hughd@google.com>
      Cc: David Rientjes <rientjes@google.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      a209ef09