1. 06 7月, 2014 4 次提交
    • L
      Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc · 75bf757e
      Linus Torvalds 提交于
      Pull ARM SoC fixes from Olof Johansson:
       "This week's arm-soc fixes:
      
         - A set of of OMAP patches that we had missed Tony's pull request of:
           * Reset fix for am43xx
           * Proper OPP table for omap5
           * Fix for SoC detection of one of the DRA7 SoCs
           * hwmod updates to get SATA and OCP to work on omap5 (drivers
             merged in 3.16)
           * ... plus a handful of smaller fixes
         - sunxi needed to re-add machine specific restart code that was
           removed in anticipation of a watchdog driver being merged for 3.16,
           and it didn't make it in.
         - Marvell fixes for PCIe on SMP and a big-endian fix.
         - A trivial defconfig update to make my capri test board boot with
           bcm_defconfig again.
      
        ... and a couple of MAINTAINERS updates, one to claim new Keystone
        drivers that have been merged, and one to merge MXS and i.MX (both
        Freescale platforms).
      
        The largest diffs come from the hwmod code for omap5 and the re-add of
        the restart code on sunxi.  The hwmod stuff is quite late at this
        point but it slipped through cracks repeatedly while coming up the
        maintainer chain and only affects the one SoC so risk is low"
      
      * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
        MAINTAINERS: Add few more Keystone drivers
        MAINTAINERS: merge MXS entry into IMX one
        ARM: sunxi: Reintroduce the restart code for A10/A20 SoCs
        ARM: mvebu: fix cpuidle implementation to work on big-endian systems
        ARM: mvebu: update L2/PCIe deadlock workaround after L2CC cleanup
        ARM: mvebu: move Armada 375 external abort logic as a quirk
        ARM: bcm: Fix bcm and multi_v7 defconfigs
        ARM: dts: dra7-evm: remove interrupt binding
        ARM: OMAP2+: Fix parser-bug in platform muxing code
        ARM: DTS: dra7/dra7xx-clocks: ATL related changes
        ARM: OMAP2+: drop unused function
        ARM: dts: am43x-epos-evm: Add Missing cpsw-phy-sel for am43x-epos-evm
        ARM: dts: omap5: Update CPU OPP table as per final production Manual
        ARM: DRA722: add detection of SoC information
        ARM: dts: Enable twl4030 off-idle configuration for selected omaps
        ARM: OMAP5: hwmod: Add ocp2scp3 and sata hwmods
        ARM: OMAP2+: hwmod: Change hardreset soc_ops for AM43XX
      75bf757e
    • L
      Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 549f11c9
      Linus Torvalds 提交于
      Pull irq fixes from Thomas Gleixner:
       "A few minor fixlets in ARM SoC irq drivers and a fix for a memory leak
        which I introduced in the last round of cleanups :("
      
      * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        genirq: Fix memory leak when calling irq_free_hwirqs()
        irqchip: spear_shirq: Fix interrupt offset
        irqchip: brcmstb-l2: Level-2 interrupts are edge sensitive
        irqchip: armada-370-xp: Mask all interrupts during initialization.
      549f11c9
    • K
      genirq: Fix memory leak when calling irq_free_hwirqs() · 8844aad8
      Keith Busch 提交于
      irq_free_hwirqs() always calls irq_free_descs() with a cnt == 0
      which makes it a no-op since the interrupt count to free is
      decremented in itself.
      
      Fixes: 7b6ef126Signed-off-by: NKeith Busch <keith.busch@intel.com>
      Acked-by: NDavid Rientjes <rientjes@google.com>
      Link: http://lkml.kernel.org/r/1404167084-8070-1-git-send-email-keith.busch@intel.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      8844aad8
    • L
      Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux · e1a08b85
      Linus Torvalds 提交于
      Pull ARM64 fixes from Catalin Marinas:
       - Exception level check at boot time (for completeness, not triggering
         any bug before)
       - I/D-cache synchronisation logic for huge pages
       - Config symbol typo
      
      * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
        arm64: fix el2_setup check of CurrentEL
        arm64: mm: Make icache synchronisation logic huge page aware
        arm64: mm: Fix horrendous config typo
      e1a08b85
  2. 05 7月, 2014 6 次提交
    • S
      MAINTAINERS: Add few more Keystone drivers · bc6aa566
      Santosh Shilimkar 提交于
      Update MAINTAINERS file for recently added reset controller, AEMIF
      and clocksource driver for Keystone SOCs.
      
      The EMIF memory controller driver is also added along with AEMIF.
      
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Olof Johansson <olof@lixom.net>
      Cc: Kevin Hilman <khilman@linaro.org>
      Cc: Mike Turquette <mturquette@linaro.org>
      Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
      Signed-off-by: NOlof Johansson <olof@lixom.net>
      bc6aa566
    • S
      MAINTAINERS: merge MXS entry into IMX one · ce515a6b
      Shawn Guo 提交于
      The mach-mxs platform is actually co-maintained by myself and
      pengutronix folks.  Also it's hosted in the same kernel tree as IMX.
      So let's merge the entry into IMX one.
      Signed-off-by: NShawn Guo <shawn.guo@freescale.com>
      Acked-by: NSascha Hauer <s.hauer@pengutronix.de>
      Signed-off-by: NOlof Johansson <olof@lixom.net>
      ce515a6b
    • O
      Merge tag 'mvebu-fixes-3.16-2' of git://git.infradead.org/linux-mvebu into fixes · 25d11631
      Olof Johansson 提交于
      mvebu fixes for v3.16 (round #2)
      
       - mvebu
          - Fix PCIe deadlock now that SMP is enabled
          - Fix cpuidle for big-endian systems
      
      * tag 'mvebu-fixes-3.16-2' of git://git.infradead.org/linux-mvebu:
        ARM: mvebu: fix cpuidle implementation to work on big-endian systems
        ARM: mvebu: update L2/PCIe deadlock workaround after L2CC cleanup
        ARM: mvebu: move Armada 375 external abort logic as a quirk
      Signed-off-by: NOlof Johansson <olof@lixom.net>
      25d11631
    • M
      ARM: sunxi: Reintroduce the restart code for A10/A20 SoCs · d767af5e
      Maxime Ripard 提交于
      This partly reverts commits 55360050 (ARM: sunxi: Remove reset code from
      the platform) and 5e669ec5 (ARM: sunxi: Remove init_machine callback) for
      the sun4i, sun5i and sun7i families.
      
      This is needed because the watchdog counterpart of these commits was dropped,
      and didn't make it into 3.16. In order to still be able to reboot the board, we
      need to reintroduce that code. Of course, the long term view is still to get
      rid of that code in mach-sunxi.
      Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
      Signed-off-by: NOlof Johansson <olof@lixom.net>
      d767af5e
    • O
      Merge tag 'omap-for-v3.16/fixes-against-rc1' of... · 5acd78c5
      Olof Johansson 提交于
      Merge tag 'omap-for-v3.16/fixes-against-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
      
      Merge OMAP fixes from Tony Lindgren:
      
      Fixes for omaps for issues discovered during the merge window and
      enabling of a few features that had to wait for the driver
      dependencies to clear.
      
      The fixes included are:
      
      - Fix am43xx hard reset flags
      - Fix SoC detection for DRA722
      - Fix CPU OPP table for omap5
      - Fix legacy mux parser bug if requested muxname is a prefix of
        multiple mux entries
      - Fix qspi interrupt binding that relies on the irq crossbar
        that has not yet been enabled
      - Add missing phy_sel for am43x-epos-evm
      - Drop unused gic_init_irq() that is no longer needed
      
      And the enabling of features that had driver dependencies are:
      
      - Change dra7 to use Audio Tracking Logic clock instead of a fixed
        clock now that the clock driver for it has been merged
      
      - Enable off idle configuration for selected omaps as all the kernel
        dependencies for device tree based booting are finally merged as
        this is needed to get the automated PM tests working finally with
        device tree based booting
      
      - Add hwmod entry for ocp2scp3 for omap5 to get sata working as
        all the driver dependencies are now in the kernel and this patch
        fell through the cracks during the merge window
      
      * tag 'omap-for-v3.16/fixes-against-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
        ARM: dts: dra7-evm: remove interrupt binding
        ARM: OMAP2+: Fix parser-bug in platform muxing code
        ARM: DTS: dra7/dra7xx-clocks: ATL related changes
        ARM: OMAP2+: drop unused function
        ARM: dts: am43x-epos-evm: Add Missing cpsw-phy-sel for am43x-epos-evm
        ARM: dts: omap5: Update CPU OPP table as per final production Manual
        ARM: DRA722: add detection of SoC information
        ARM: dts: Enable twl4030 off-idle configuration for selected omaps
        ARM: OMAP5: hwmod: Add ocp2scp3 and sata hwmods
        ARM: OMAP2+: hwmod: Change hardreset soc_ops for AM43XX
      5acd78c5
    • L
      Merge tag 'md/3.16-fixes' of git://neil.brown.name/md · 77c4cf17
      Linus Torvalds 提交于
      Pull md bugfixes from Neil Brown:
       "Two minor bugfixes for md in 3.16"
      
      * tag 'md/3.16-fixes' of git://neil.brown.name/md:
        md: flush writes before starting a recovery.
        md: make sure GET_ARRAY_INFO ioctl reports correct "clean" status
      77c4cf17
  3. 04 7月, 2014 30 次提交
    • L
      Merge tag 'sound-3.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · 88b5a850
      Linus Torvalds 提交于
      Pull sound fixes from Takashi Iwai:
       "This contains a few fixes for HD-audio: yet another Dell headset pin
        quirk, a fixup for Thinkpad T540P, and an improved fix for
        Haswell/Broadwell HDMI clock setup"
      
      * tag 'sound-3.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: hda - restore BCLK M/N value as per CDCLK for HSW/BDW display HDA controller
        drm/i915: provide interface for audio driver to query cdclk
        ALSA: hda - Add a fixup for Thinkpad T540p
        ALSA: hda - Add another headset pin quirk for some Dell machines
      88b5a850
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs · b82207b8
      Linus Torvalds 提交于
      Pull btrfs fixes from Chris Mason:
       "We've queued up a few fixes in my for-linus branch"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
        Btrfs: fix crash when starting transaction
        Btrfs: fix btrfs_print_leaf for skinny metadata
        Btrfs: fix race of using total_bytes_pinned
        btrfs: use E2BIG instead of EIO if compression does not help
        btrfs: remove stale comment from btrfs_flush_all_pending_stuffs
        Btrfs: fix use-after-free when cloning a trailing file hole
        btrfs: fix null pointer dereference in btrfs_show_devname when name is null
        btrfs: fix null pointer dereference in clone_fs_devices when name is null
        btrfs: fix nossd and ssd_spread mount option regression
        Btrfs: fix race between balance recovery and root deletion
        Btrfs: atomically set inode->i_flags in btrfs_update_iflags
        btrfs: only unlock block in verify_parent_transid if we locked it
        Btrfs: assert send doesn't attempt to start transactions
        btrfs compression: reuse recently used workspace
        Btrfs: fix crash when mounting raid5 btrfs with missing disks
        btrfs: create sprout should rename fsid on the sysfs as well
        btrfs: dev replace should replace the sysfs entry
        btrfs: dev add should add its sysfs entry
        btrfs: dev delete should remove sysfs entry
        btrfs: rename add_device_membership to btrfs_kobj_add_device
      b82207b8
    • M
      arm64: fix el2_setup check of CurrentEL · 974c8e45
      Marc Zyngier 提交于
      The CurrentEL system register reports the Current Exception Level
      of the CPU. It doesn't say anything about the stack handling, and
      yet we compare it to PSR_MODE_EL2t and PSR_MODE_EL2h.
      
      It works by chance because PSR_MODE_EL2t happens to match the right
      bits, but that's otherwise a very bad idea. Just check for the EL
      value instead.
      Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
      [catalin.marinas@arm.com: fixed arch/arm64/kernel/efi-entry.S]
      Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
      974c8e45
    • S
      arm64: mm: Make icache synchronisation logic huge page aware · 923b8f50
      Steve Capper 提交于
      The __sync_icache_dcache routine will only flush the dcache for the
      first page of a compound page, potentially leading to stale icache
      data residing further on in a hugetlb page.
      
      This patch addresses this issue by taking into consideration the
      order of the page when flushing the dcache.
      Reported-by: NMark Brown <broonie@linaro.org>
      Tested-by: NMark Brown <broonie@linaro.org>
      Signed-off-by: NSteve Capper <steve.capper@linaro.org>
      Acked-by: NWill Deacon <will.deacon@arm.com>
      Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
      Cc: <stable@vger.kernel.org> # v3.11+
      923b8f50
    • S
      arm64: mm: Fix horrendous config typo · f3b766a2
      Steve Capper 提交于
      The define ARM64_64K_PAGES is tested for rather than
      CONFIG_ARM64_64K_PAGES. Correct that typo here.
      Signed-off-by: NSteve Capper <steve.capper@linaro.org>
      Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
      f3b766a2
    • M
      ALSA: hda - restore BCLK M/N value as per CDCLK for HSW/BDW display HDA controller · e4d9e513
      Mengdong Lin 提交于
      For HSW/BDW display HD-A controller, hda_set_bclk() is defined to set BCLK
      by programming the M/N values as per the core display clock (CDCLK) queried from
      i915 display driver.
      
      And the audio driver will also set BCLK in azx_first_init() since the display
      driver can turn off the shared power in boot phase if only eDP is connected
      and M/N values will be lost and must be reprogrammed.
      Signed-off-by: NMengdong Lin <mengdong.lin@intel.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      e4d9e513
    • J
      drm/i915: provide interface for audio driver to query cdclk · c149dcb5
      Jani Nikula 提交于
      For Haswell and Broadwell, if the display power well has been disabled,
      the display audio controller divider values EM4 M VALUE and EM5 N VALUE
      will have been lost. The CDCLK frequency is required for reprogramming them
      to generate 24MHz HD-A link BCLK. So provide a private interface for the
      audio driver to query CDCLK.
      
      This is a stopgap solution until a more generic interface between audio
      and display drivers has been implemented.
      Signed-off-by: NJani Nikula <jani.nikula@intel.com>
      Reviewed-by: NDamien Lespiau <damien.lespiau@intel.com>
      Signed-off-by: NMengdong Lin <mengdong.lin@intel.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      c149dcb5
    • L
      Merge tag 'usb-3.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · 034a0f6b
      Linus Torvalds 提交于
      Pull USB bugfixes from Greg KH:
       "Here's a round of USB bugfixes, quirk additions, and new device ids
        for 3.16-rc4.  Nothing major in here at all, just a bunch of tiny
        changes.  All have been in linux-next with no reported issues"
      
      * tag 'usb-3.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (33 commits)
        usb: chipidea: udc: delete td from req's td list at ep_dequeue
        usb: Kconfig: make EHCI_MSM selectable for QCOM SOCs
        usb-storage/SCSI: Add broken_fua blacklist flag
        usb: musb: dsps: fix the base address for accessing the mode register
        tools: ffs-test: fix header values endianess
        usb: phy: msm: Do not do runtime pm if the phy is not idle
        usb: musb: Ensure that cppi41 timer gets armed on premature DMA TX irq
        usb: gadget: gr_udc: Fix check for invalid number of microframes
        usb: musb: Fix panic upon musb_am335x module removal
        usb: gadget: f_fs: resurect usb_functionfs_descs_head structure
        Revert "tools: ffs-test: convert to new descriptor format fixing compilation error"
        xhci: Fix runtime suspended xhci from blocking system suspend.
        xhci: clear root port wake on bits if controller isn't wake-up capable
        xhci: correct burst count field for isoc transfers on 1.0 xhci hosts
        xhci: Use correct SLOT ID when handling a reset device command
        MAINTAINERS: update e-mail address
        usb: option: add/modify Olivetti Olicard modems
        USB: ftdi_sio: fix null deref at port probe
        MAINTAINERS: drop two usb-serial subdriver entries
        USB: option: add device ID for SpeedUp SU9800 usb 3g modem
        ...
      034a0f6b
    • L
      Merge tag 'staging-3.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging · 9911f2e1
      Linus Torvalds 提交于
      Pull staging driver bugfixes from Greg KH:
       "Nothing major here, just 4 small bugfixes that resolve some issues
        reported for the IIO (staging and non-staging) and the tidspbridge
        driver"
      
      * tag 'staging-3.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
        staging: tidspbridge: fix an erroneous removal of parentheses
        iio: of_iio_channel_get_by_name() returns non-null pointers for error legs
        staging: iio/ad7291: fix error code in ad7291_probe()
        iio:adc:ad799x: Fix reading and writing of event values, apply shift
      9911f2e1
    • L
      Merge tag 'driver-core-3.16-rc4' of... · 3089f54a
      Linus Torvalds 提交于
      Merge tag 'driver-core-3.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
      
      Pull driver core fixes from Greg KH:
       "Well, one drivercore fix for kernfs to resolve a reported issue with
        sysfs files being updated from atomic contexts, and another lz4 bugfix
        for testing potential buffer overflows"
      
      * tag 'driver-core-3.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
        lz4: add overrun checks to lz4_uncompress_unknownoutputsize()
        kernfs: kernfs_notify() must be useable from non-sleepable contexts
      3089f54a
    • L
      Merge tag 'trace-fixes-v3.16-rc3' of... · ef34c6ce
      Linus Torvalds 提交于
      Merge tag 'trace-fixes-v3.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
      
      Pull tracing fixes from Steven Rostedt:
       "Oleg Nesterov found and fixed a bug in the perf/ftrace/uprobes code
        where running:
      
          # perf probe -x /lib/libc.so.6 syscall
          # echo 1 >> /sys/kernel/debug/tracing/events/probe_libc/enable
          # perf record -e probe_libc:syscall whatever
      
        kills the uprobe.  Along the way he found some other minor bugs and
        clean ups that he fixed up making it a total of 4 patches.
      
        Doing unrelated work, I found that the reading of the ftrace trace
        file disables all function tracer callbacks.  This was fine when
        ftrace was the only user, but now that it's used by perf and kprobes,
        this is a bug where reading trace can disable kprobes and perf.  A
        very unexpected side effect and should be fixed"
      
      * tag 'trace-fixes-v3.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
        tracing: Remove ftrace_stop/start() from reading the trace file
        tracing/uprobes: Fix the usage of uprobe_buffer_enable() in probe_event_enable()
        tracing/uprobes: Kill the bogus UPROBE_HANDLER_REMOVE code in uprobe_dispatcher()
        uprobes: Change unregister/apply to WARN() if uprobe/consumer is gone
        tracing/uprobes: Revert "Support mix of ftrace and perf"
      ef34c6ce
    • L
      Merge branch 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild · af6f157a
      Linus Torvalds 提交于
      Pull kbuild fix from Michal Marek:
       "There is one more fix for the relative paths series from -rc1: Print
        the path to the build directory at the start of the build, so that
        editors and IDEs can match the relative paths to source files"
      
      * 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
        kbuild: Print the name of the build directory
      af6f157a
    • L
      Merge branch 'for-3.16' of git://linux-nfs.org/~bfields/linux · 0fba687f
      Linus Torvalds 提交于
      Pull nfsd bugfixes from Bruce Fields:
       "By coincidence, two NFSv4 symlink bugs, one introduced in the 3.16 xdr
        encoding rewrite, the other a decoding bug that I think we've had
        since the start but that just doesn't trigger very often"
      
      * 'for-3.16' of git://linux-nfs.org/~bfields/linux:
        nfs: fix nfs4d readlink truncated packet
        nfsd: fix rare symlink decoding bug
      0fba687f
    • T
      ptrace,x86: force IRET path after a ptrace_stop() · b9cd18de
      Tejun Heo 提交于
      The 'sysret' fastpath does not correctly restore even all regular
      registers, much less any segment registers or reflags values.  That is
      very much part of why it's faster than 'iret'.
      
      Normally that isn't a problem, because the normal ptrace() interface
      catches the process using the signal handler infrastructure, which
      always returns with an iret.
      
      However, some paths can get caught using ptrace_event() instead of the
      signal path, and for those we need to make sure that we aren't going to
      return to user space using 'sysret'.  Otherwise the modifications that
      may have been done to the register set by the tracer wouldn't
      necessarily take effect.
      
      Fix it by forcing IRET path by setting TIF_NOTIFY_RESUME from
      arch_ptrace_stop_needed() which is invoked from ptrace_stop().
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Reported-by: NAndy Lutomirski <luto@amacapital.net>
      Acked-by: NOleg Nesterov <oleg@redhat.com>
      Suggested-by: NLinus Torvalds <torvalds@linux-foundation.org>
      Cc: stable@vger.kernel.org
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      b9cd18de
    • G
      lz4: add overrun checks to lz4_uncompress_unknownoutputsize() · 4a3a9904
      Greg Kroah-Hartman 提交于
      Jan points out that I forgot to make the needed fixes to the
      lz4_uncompress_unknownoutputsize() function to mirror the changes done
      in lz4_decompress() with regards to potential pointer overflows.
      
      The only in-kernel user of this function is the zram code, which only
      takes data from a valid compressed buffer that it made itself, so it's
      not a big issue.  But due to external kernel modules using this
      function, it's better to be safe here.
      Reported-by: NJan Beulich <JBeulich@suse.com>
      Cc: "Don A. Bailey" <donb@securitymouse.com>
      Cc: stable <stable@vger.kernel.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      4a3a9904
    • L
      Merge branch 'akpm' (patches from Andrew Morton) · 5170a3b2
      Linus Torvalds 提交于
      Merge fixes from Andrew Morton:
       "14 fixes"
      
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>:
        shmem: fix init_page_accessed use to stop !PageLRU bug
        kernel/printk/printk.c: revert "printk: enable interrupts before calling console_trylock_for_printk()"
        tools/testing/selftests/ipc/msgque.c: improve error handling when not running as root
        fs/seq_file: fallback to vmalloc allocation
        /proc/stat: convert to single_open_size()
        hwpoison: fix the handling path of the victimized page frame that belong to non-LRU
        mm:vmscan: update the trace-vmscan-postprocess.pl for event vmscan/mm_vmscan_lru_isolate
        msync: fix incorrect fstart calculation
        zram: revalidate disk after capacity change
        tools: memory-hotplug fix unexpected operator error
        tools: cpu-hotplug fix unexpected operator error
        autofs4: fix false positive compile error
        slub: fix off by one in number of slab tests
        mm: page_alloc: fix CMA area initialisation when pageblock > MAX_ORDER
      5170a3b2
    • H
      shmem: fix init_page_accessed use to stop !PageLRU bug · 66d2f4d2
      Hugh Dickins 提交于
      Under shmem swapping load, I sometimes hit the VM_BUG_ON_PAGE(!PageLRU)
      in isolate_lru_pages() at mm/vmscan.c:1281!
      
      Commit 2457aec6 ("mm: non-atomically mark page accessed during page
      cache allocation where possible") looks like interrupted work-in-progress.
      
      mm/filemap.c's call to init_page_accessed() is fine, but not mm/shmem.c's
      - shmem_write_begin() is clearly wrong to use it after shmem_getpage(),
      when the page is always visible in radix_tree, and often already on LRU.
      
      Revert change to shmem_write_begin(), and use init_page_accessed() or
      mark_page_accessed() appropriately for SGP_WRITE in shmem_getpage_gfp().
      
      SGP_WRITE also covers shmem_symlink(), which did not mark_page_accessed()
      before; but since many other filesystems use [__]page_symlink(), which did
      and does mark the page accessed, consider this as rectifying an oversight.
      Signed-off-by: NHugh Dickins <hughd@google.com>
      Acked-by: NMel Gorman <mgorman@suse.de>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Cc: Vlastimil Babka <vbabka@suse.cz>
      Cc: Michal Hocko <mhocko@suse.cz>
      Cc: Dave Hansen <dave.hansen@intel.com>
      Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      66d2f4d2
    • A
      kernel/printk/printk.c: revert "printk: enable interrupts before calling... · d18bbc21
      Andrew Morton 提交于
      kernel/printk/printk.c: revert "printk: enable interrupts before calling console_trylock_for_printk()"
      
      Revert commit 939f04be ("printk: enable interrupts before calling
      console_trylock_for_printk()").
      
      Andreas reported:
      
      : None of the post 3.15 kernel boot for me. They all hang at the GRUB
      : screen telling me it loaded and started the kernel, but the kernel
      : itself stops before it prints anything (or even replaces the GRUB
      : background graphics).
      
      939f04be is modest latency reduction.  Revert it until we understand
      the reason for these failures.
      Reported-by: NAndreas Bombe <aeb@debian.org>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      d18bbc21
    • S
      tools/testing/selftests/ipc/msgque.c: improve error handling when not running as root · e84f1ab3
      Shuah Khan 提交于
      The test fails in the middle when it is not run as root while accessing
      /proc/sys/kernel/msg_next_id.  Changed it to check for root at the
      beginning of the test and exit if not root.
      Signed-off-by: NShuah Khan <shuah.kh@samsung.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Davidlohr Bueso <davidlohr@hp.com>
      Cc: Colin Ian King <colin.king@canonical.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      e84f1ab3
    • H
      fs/seq_file: fallback to vmalloc allocation · 058504ed
      Heiko Carstens 提交于
      There are a couple of seq_files which use the single_open() interface.
      This interface requires that the whole output must fit into a single
      buffer.
      
      E.g.  for /proc/stat allocation failures have been observed because an
      order-4 memory allocation failed due to memory fragmentation.  In such
      situations reading /proc/stat is not possible anymore.
      
      Therefore change the seq_file code to fallback to vmalloc allocations
      which will usually result in a couple of order-0 allocations and hence
      also work if memory is fragmented.
      
      For reference a call trace where reading from /proc/stat failed:
      
        sadc: page allocation failure: order:4, mode:0x1040d0
        CPU: 1 PID: 192063 Comm: sadc Not tainted 3.10.0-123.el7.s390x #1
        [...]
        Call Trace:
          show_stack+0x6c/0xe8
          warn_alloc_failed+0xd6/0x138
          __alloc_pages_nodemask+0x9da/0xb68
          __get_free_pages+0x2e/0x58
          kmalloc_order_trace+0x44/0xc0
          stat_open+0x5a/0xd8
          proc_reg_open+0x8a/0x140
          do_dentry_open+0x1bc/0x2c8
          finish_open+0x46/0x60
          do_last+0x382/0x10d0
          path_openat+0xc8/0x4f8
          do_filp_open+0x46/0xa8
          do_sys_open+0x114/0x1f0
          sysc_tracego+0x14/0x1a
      Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
      Tested-by: NDavid Rientjes <rientjes@google.com>
      Cc: Ian Kent <raven@themaw.net>
      Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
      Cc: Thorsten Diehl <thorsten.diehl@de.ibm.com>
      Cc: Andrea Righi <andrea@betterlinux.com>
      Cc: Christoph Hellwig <hch@infradead.org>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Stefan Bader <stefan.bader@canonical.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      058504ed
    • H
      /proc/stat: convert to single_open_size() · f74373a5
      Heiko Carstens 提交于
      These two patches are supposed to "fix" failed order-4 memory
      allocations which have been observed when reading /proc/stat.  The
      problem has been observed on s390 as well as on x86.
      
      To address the problem change the seq_file memory allocations to
      fallback to use vmalloc, so that allocations also work if memory is
      fragmented.
      
      This approach seems to be simpler and less intrusive than changing
      /proc/stat to use an interator.  Also it "fixes" other users as well,
      which use seq_file's single_open() interface.
      
      This patch (of 2):
      
      Use seq_file's single_open_size() to preallocate a buffer that is large
      enough to hold the whole output, instead of open coding it.  Also
      calculate the requested size using the number of online cpus instead of
      possible cpus, since the size of the output only depends on the number
      of online cpus.
      Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
      Acked-by: NDavid Rientjes <rientjes@google.com>
      Cc: Ian Kent <raven@themaw.net>
      Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
      Cc: Thorsten Diehl <thorsten.diehl@de.ibm.com>
      Cc: Andrea Righi <andrea@betterlinux.com>
      Cc: Christoph Hellwig <hch@infradead.org>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Stefan Bader <stefan.bader@canonical.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      f74373a5
    • C
      hwpoison: fix the handling path of the victimized page frame that belong to non-LRU · 0bc1f8b0
      Chen Yucong 提交于
      Until now, the kernel has the same policy to handle victimized page
      frames that belong to kernel-space(reserved/slab-subsystem) or
      non-LRU(unknown page state).  In other word, the result of handling
      either of these victimized page frames is (IGNORED | FAILED), and the
      return value of memory_failure() is -EBUSY.
      
      This patch is to avoid that memory_failure() returns very soon due to
      the "true" value of (!PageLRU(p)), and it also ensures that
      action_result() can report more precise information("reserved kernel",
      "kernel slab", and "unknown page state") instead of "non LRU",
      especially for memory errors which are detected by memory-scrubbing.
      
      Andi said:
      
      : While running the mcelog test suite on 3.14 I hit the following VM_BUG_ON:
      :
      : soft_offline: 0x56d4: unknown non LRU page type 3ffff800008000
      : page:ffffea000015b400 count:3 mapcount:2097169 mapping:          (null) index:0xffff8800056d7000
      : page flags: 0x3ffff800004081(locked|slab|head)
      : ------------[ cut here ]------------
      : kernel BUG at mm/rmap.c:1495!
      :
      : I think what happened is that a LRU page turned into a slab page in
      : parallel with offlining.  memory_failure initially tests for this case,
      : but doesn't retest later after the page has been locked.
      :
      : ...
      :
      : I ran this patch in a loop over night with some stress plus
      : the mcelog test suite running in a loop. I cannot guarantee it hit it,
      : but it should have given it a good beating.
      :
      : The kernel survived with no messages, although the mcelog test suite
      : got killed at some point because it couldn't fork anymore. Probably
      : some unrelated problem.
      :
      : So the patch is ok for me for .16.
      Signed-off-by: NChen Yucong <slaoub@gmail.com>
      Acked-by: NNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>
      Reported-by: NAndi Kleen <andi@firstfloor.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      0bc1f8b0
    • C
      mm:vmscan: update the trace-vmscan-postprocess.pl for event vmscan/mm_vmscan_lru_isolate · b27ebf77
      Chen Yucong 提交于
      When using trace-vmscan-postprocess.pl for checking the file/anon rate
      of scanning, we can find that it can not be performed.  At the same
      time, the following message will be reported:
      
        WARNING: Format not as expected for event vmscan/mm_vmscan_lru_isolate
        'file' != 'contig_taken' Fewer fields than expected in format at
        ./trace-vmscan-postprocess.pl line 171, <FORMAT> line 76.
      
      In trace-vmscan-postprocess.pl, (contig_taken, contig_dirty, and
      contig_failed) are be associated respectively to (nr_lumpy_taken,
      nr_lumpy_dirty, and nr_lumpy_failed) for lumpy reclaim.  Via commit
      c53919ad ("mm: vmscan: remove lumpy reclaim"), lumpy reclaim had
      already been removed by Mel, but the update for
      trace-vmscan-postprocess.pl was missed.
      Signed-off-by: NChen Yucong <slaoub@gmail.com>
      Cc: Mel Gorman <mel@csn.ul.ie>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      b27ebf77
    • N
      msync: fix incorrect fstart calculation · 496a8e68
      Namjae Jeon 提交于
      Fix a regression caused by 7fc34a62 ("mm/msync.c: sync only the
      requested range in msync()").
      
      xfstests generic/075 fail occured on ext4 data=journal mode because the
      intended range was not syncing due to wrong fstart calculation.
      Signed-off-by: NNamjae Jeon <namjae.jeon@samsung.com>
      Signed-off-by: NAshish Sangwan <a.sangwan@samsung.com>
      Reported-by: NEric Whitney <enwlinux@gmail.com>
      Tested-by: NEric Whitney <enwlinux@gmail.com>
      Acked-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Reviewed-by: NLukas Czerner <lczerner@redhat.com>
      Tested-by: NLukas Czerner <lczerner@redhat.com>
      Reviewed-by: NTheodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      496a8e68
    • M
      zram: revalidate disk after capacity change · 2e32baea
      Minchan Kim 提交于
      Alexander reported mkswap on /dev/zram0 is failed if other process is
      opening the block device file.
      
      Step is as follows,
      
      0. Reset the unused zram device.
      1. Use a program that opens /dev/zram0 with O_RDWR and sleeps
         until killed.
      2. While that program sleeps, echo the correct value to
         /sys/block/zram0/disksize.
      3. Verify (e.g. in /proc/partitions) that the disk size is applied
         correctly. It is.
      4. While that program still sleeps, attempt to mkswap /dev/zram0.
         This fails: mkswap: error: swap area needs to be at least 40 KiB
      
      When I investigated, the size get by ioctl(fd, BLKGETSIZE64, xxx) on
      mkswap to get a size of blockdev was zero although zram0 has right size by
      2.
      
      The reason is zram didn't revalidate disk after changing capacity so that
      size of blockdev's inode is not uptodate until all of file is close.
      
      This patch should fix the BUG.
      Signed-off-by: NMinchan Kim <minchan@kernel.org>
      Reported-by: NAlexander E. Patrakov <patrakov@gmail.com>
      Tested-by: NAlexander E. Patrakov <patrakov@gmail.com>
      Reviewed-by: NSergey Senozhatsky <sergey.senozhatsky@gmail.com>
      Cc: Nitin Gupta <ngupta@vflare.org>
      Acked-by: NJerome Marchand <jmarchan@redhat.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      2e32baea
    • S
      tools: memory-hotplug fix unexpected operator error · e98f7762
      Shuah Khan 提交于
      on-off-test uses "$UID != 0" to test for root, but $UID is a construct
      specific to bash.  Using /bin/sh that isn't bash results in the
      following error (due to the "$UID" part expanding to nothing):
      
        ./on-off-test.sh: 9: [: !=: unexpected operator
      
      Change Makefile to use bash instead.
      Signed-off-by: NShuah Khan <shuah.kh@samsung.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      e98f7762
    • S
      tools: cpu-hotplug fix unexpected operator error · 1bd702e6
      Shuah Khan 提交于
      on-off-test uses "$UID != 0" to test for root, but $UID is a construct
      specific to bash.  Using /bin/sh that isn't bash results in the
      following error (due to the "$UID" part expanding to nothing):
      
        ./on-off-test.sh: 9: [: !=: unexpected operator
      
      Change Makefile to use bash instead.
      Signed-off-by: NShuah Khan <shuah.kh@samsung.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      1bd702e6
    • I
      autofs4: fix false positive compile error · 571ff473
      Ian Kent 提交于
      On strict build environments we can see:
      
        fs/autofs4/inode.c: In function 'autofs4_fill_super':
        fs/autofs4/inode.c:312: error: 'pgrp' may be used uninitialized in this function
        make[2]: *** [fs/autofs4/inode.o] Error 1
        make[1]: *** [fs/autofs4] Error 2
        make: *** [fs] Error 2
        make: *** Waiting for unfinished jobs....
      
      This is due to the use of pgrp_set being used to indicate pgrp has has
      been set rather than initializing pgrp itself.
      Signed-off-by: NIan Kent <raven@themaw.net>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      571ff473
    • J
      slub: fix off by one in number of slab tests · 8a5b20ae
      Joonsoo Kim 提交于
      min_partial means minimum number of slab cached in node partial list.
      So, if nr_partial is less than it, we keep newly empty slab on node
      partial list rather than freeing it.  But if nr_partial is equal or
      greater than it, it means that we have enough partial slabs so should
      free newly empty slab.  Current implementation missed the equal case so
      if we set min_partial is 0, then, at least one slab could be cached.
      This is critical problem to kmemcg destroying logic because it doesn't
      works properly if some slabs is cached.  This patch fixes this problem.
      
      Fixes 91cb69620284 ("slub: make dead memcg caches discard free slabs
      immediately").
      Signed-off-by: NJoonsoo Kim <iamjoonsoo.kim@lge.com>
      Acked-by: NVladimir Davydov <vdavydov@parallels.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: Pekka Enberg <penberg@kernel.org>
      Acked-by: NDavid Rientjes <rientjes@google.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      8a5b20ae
    • M
      mm: page_alloc: fix CMA area initialisation when pageblock > MAX_ORDER · dc78327c
      Michal Nazarewicz 提交于
      With a kernel configured with ARM64_64K_PAGES && !TRANSPARENT_HUGEPAGE,
      the following is triggered at early boot:
      
        SMP: Total of 8 processors activated.
        devtmpfs: initialized
        Unable to handle kernel NULL pointer dereference at virtual address 00000008
        pgd = fffffe0000050000
        [00000008] *pgd=00000043fba00003, *pmd=00000043fba00003, *pte=00e0000078010407
        Internal error: Oops: 96000006 [#1] SMP
        Modules linked in:
        CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.15.0-rc864k+ #44
        task: fffffe03bc040000 ti: fffffe03bc080000 task.ti: fffffe03bc080000
        PC is at __list_add+0x10/0xd4
        LR is at free_one_page+0x270/0x638
        ...
        Call trace:
          __list_add+0x10/0xd4
          free_one_page+0x26c/0x638
          __free_pages_ok.part.52+0x84/0xbc
          __free_pages+0x74/0xbc
          init_cma_reserved_pageblock+0xe8/0x104
          cma_init_reserved_areas+0x190/0x1e4
          do_one_initcall+0xc4/0x154
          kernel_init_freeable+0x204/0x2a8
          kernel_init+0xc/0xd4
      
      This happens because init_cma_reserved_pageblock() calls
      __free_one_page() with pageblock_order as page order but it is bigger
      than MAX_ORDER.  This in turn causes accesses past zone->free_list[].
      
      Fix the problem by changing init_cma_reserved_pageblock() such that it
      splits pageblock into individual MAX_ORDER pages if pageblock is bigger
      than a MAX_ORDER page.
      
      In cases where !CONFIG_HUGETLB_PAGE_SIZE_VARIABLE, which is all
      architectures expect for ia64, powerpc and tile at the moment, the
      “pageblock_order > MAX_ORDER” condition will be optimised out since both
      sides of the operator are constants.  In cases where pageblock size is
      variable, the performance degradation should not be significant anyway
      since init_cma_reserved_pageblock() is called only at boot time at most
      MAX_CMA_AREAS times which by default is eight.
      Signed-off-by: NMichal Nazarewicz <mina86@mina86.com>
      Reported-by: NMark Salter <msalter@redhat.com>
      Tested-by: NMark Salter <msalter@redhat.com>
      Tested-by: NChristopher Covington <cov@codeaurora.org>
      Cc: Mel Gorman <mgorman@suse.de>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Marek Szyprowski <m.szyprowski@samsung.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: <stable@vger.kernel.org>	[3.5+]
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      dc78327c