1. 04 8月, 2012 6 次提交
    • T
      workqueue: unify local CPU queueing handling · 57469821
      Tejun Heo 提交于
      Queueing functions have been using different methods to determine the
      local CPU.
      
      * queue_work() superflously uses get/put_cpu() to acquire and hold the
        local CPU across queue_work_on().
      
      * delayed_work_timer_fn() uses smp_processor_id().
      
      * queue_delayed_work() calls queue_delayed_work_on() with -1 @cpu
        which is interpreted as the local CPU.
      
      * flush_delayed_work[_sync]() were using raw_smp_processor_id().
      
      * __queue_work() interprets %WORK_CPU_UNBOUND as local CPU if the
        target workqueue is bound one but nobody uses this.
      
      This patch converts all functions to uniformly use %WORK_CPU_UNBOUND
      to indicate local CPU and use the local binding feature of
      __queue_work().  unlikely() is dropped from %WORK_CPU_UNBOUND handling
      in __queue_work().
      Signed-off-by: NTejun Heo <tj@kernel.org>
      57469821
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      workqueue: set delayed_work->timer function on initialization · d8e794df
      Tejun Heo 提交于
      delayed_work->timer.function is currently initialized during
      queue_delayed_work_on().  Export delayed_work_timer_fn() and set
      delayed_work timer function during delayed_work initialization
      together with other fields.
      
      This ensures the timer function is always valid on an initialized
      delayed_work.  This is to help mod_delayed_work() implementation.
      
      To detect delayed_work users which diddle with the internal timer,
      trigger WARN if timer function doesn't match on queue.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      d8e794df
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      workqueue: disable irq while manipulating PENDING · 8930caba
      Tejun Heo 提交于
      Queueing operations use WORK_STRUCT_PENDING_BIT to synchronize access
      to the target work item.  They first try to claim the bit and proceed
      with queueing only after that succeeds and there's a window between
      PENDING being set and the actual queueing where the task can be
      interrupted or preempted.
      
      There's also a similar window in process_one_work() when clearing
      PENDING.  A work item is dequeued, gcwq->lock is released and then
      PENDING is cleared and the worker might get interrupted or preempted
      between releasing gcwq->lock and clearing PENDING.
      
      cancel[_delayed]_work_sync() tries to claim or steal PENDING.  The
      function assumes that a work item with PENDING is either queued or in
      the process of being [de]queued.  In the latter case, it busy-loops
      until either the work item loses PENDING or is queued.  If canceling
      coincides with the above described interrupts or preemptions, the
      canceling task will busy-loop while the queueing or executing task is
      preempted.
      
      This patch keeps irq disabled across claiming PENDING and actual
      queueing and moves PENDING clearing in process_one_work() inside
      gcwq->lock so that busy looping from PENDING && !queued doesn't wait
      for interrupted/preempted tasks.  Note that, in process_one_work(),
      setting last CPU and clearing PENDING got merged into single
      operation.
      
      This removes possible long busy-loops and will allow using
      try_to_grab_pending() from bh and irq contexts.
      
      v2: __queue_work() was testing preempt_count() to ensure that the
          caller has disabled preemption.  This triggers spuriously if
          !CONFIG_PREEMPT_COUNT.  Use preemptible() instead.  Reported by
          Fengguang Wu.
      
      v3: Disable irq instead of preemption.  IRQ will be disabled while
          grabbing gcwq->lock later anyway and this allows using
          try_to_grab_pending() from bh and irq contexts.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Fengguang Wu <fengguang.wu@intel.com>
      8930caba
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      workqueue: add missing smp_wmb() in process_one_work() · 959d1af8
      Tejun Heo 提交于
      WORK_STRUCT_PENDING is used to claim ownership of a work item and
      process_one_work() releases it before starting execution.  When
      someone else grabs PENDING, all pre-release updates to the work item
      should be visible and all updates made by the new owner should happen
      afterwards.
      
      Grabbing PENDING uses test_and_set_bit() and thus has a full barrier;
      however, clearing doesn't have a matching wmb.  Given the preceding
      spin_unlock and use of clear_bit, I don't believe this can be a
      problem on an actual machine and there hasn't been any related report
      but it still is theretically possible for clear_pending to permeate
      upwards and happen before work->entry update.
      
      Add an explicit smp_wmb() before work_clear_pending().
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: stable@vger.kernel.org
      959d1af8
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      workqueue: make queueing functions return bool · d4283e93
      Tejun Heo 提交于
      All queueing functions return 1 on success, 0 if the work item was
      already pending.  Update them to return bool instead.  This signifies
      better that they don't return 0 / -errno.
      
      This is cleanup and doesn't cause any functional difference.
      
      While at it, fix comment opening for schedule_work_on().
      Signed-off-by: NTejun Heo <tj@kernel.org>
      d4283e93
    • T
      workqueue: reorder queueing functions so that _on() variants are on top · 0a13c00e
      Tejun Heo 提交于
      Currently, queue/schedule[_delayed]_work_on() are located below the
      counterpart without the _on postifx even though the latter is usually
      implemented using the former.  Swap them.
      
      This is cleanup and doesn't cause any functional difference.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      0a13c00e
  2. 03 8月, 2012 16 次提交
    • L
      Linux 3.6-rc1 · 0d7614f0
      Linus Torvalds 提交于
      0d7614f0
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      Merge branch 'for-linus-3.6' of git://dev.laptop.org/users/dilinger/linux-olpc · fc6bdb59
      Linus Torvalds 提交于
      Pull OLPC platform updates from Andres Salomon:
       "These move the OLPC Embedded Controller driver out of
        arch/x86/platform and into drivers/platform/olpc.
      
        OLPC machines are now ARM-based (which means lots of x86 and ARM
        changes), but are typically pretty self-contained..  so it makes more
        sense to go through a separate OLPC tree after getting the appropriate
        review/ACKs."
      
      * 'for-linus-3.6' of git://dev.laptop.org/users/dilinger/linux-olpc:
        x86: OLPC: move s/r-related EC cmds to EC driver
        Platform: OLPC: move global variables into priv struct
        Platform: OLPC: move debugfs support from x86 EC driver
        x86: OLPC: switch over to using new EC driver on x86
        Platform: OLPC: add a suspended flag to the EC driver
        Platform: OLPC: turn EC driver into a platform_driver
        Platform: OLPC: allow EC cmd to be overridden, and create a workqueue to call it
        drivers: OLPC: update various drivers to include olpc-ec.h
        Platform: OLPC: add a stub to drivers/platform/ for the OLPC EC driver
      fc6bdb59
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      Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc · 44d82e29
      Linus Torvalds 提交于
      Pull arm-soc Marvell Orion device-tree updates from Olof Johansson:
       "This contains a set of device-tree conversions for Marvell Orion
        platforms that were staged early but took a few tries to get the
        branch into a format where it was suitable for us to pick up.
      
        Given that most people working on these platforms are hobbyists with
        limited time, we were a bit more flexible with merging it even though
        it came in late."
      
      * tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (21 commits)
        ARM: Kirkwood: Replace mrvl with marvell
        ARM: Kirkwood: Describe GoFlex Net LEDs and SATA in DT.
        ARM: Kirkwood: Describe Dreamplug LEDs in DT.
        ARM: Kirkwood: Describe iConnects LEDs in DT.
        ARM: Kirkwood: Describe iConnects temperature sensor in DT.
        ARM: Kirkwood: Describe IB62x0 LEDs in DT.
        ARM: Kirkwood: Describe IB62x0 gpio-keys in DT.
        ARM: Kirkwood: Describe DNS32? gpio-keys in DT.
        ARM: Kirkwood: Move common portions into a kirkwood-dnskw.dtsi
        ARM: Kirkwood: Replace DNS-320/DNS-325 leds with dt bindings
        ARM: Kirkwood: Describe DNS325 temperature sensor in DT.
        ARM: Kirkwood: Use DT to configure SATA device.
        ARM: kirkwood: use devicetree for SPI on dreamplug
        ARM: kirkwood: Add LS-XHL and LS-CHLv2 support
        ARM: Kirkwood: Initial DTS support for Kirkwood GoFlex Net
        ARM: Kirkwood: Add basic device tree support for QNAP TS219.
        ATA: sata_mv: Add device tree support
        ARM: Orion: DTify the watchdog timer.
        ARM: Orion: Add arch support needed for I2C via DT.
        ARM: kirkwood: use devicetree for orion-spi
        ...
      
      Conflicts:
      	drivers/watchdog/orion_wdt.c
      44d82e29
    • L
      Merge tag 'pm2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc · bfdf85df
      Linus Torvalds 提交于
      Pull arm-soc cpuidle enablement for OMAP from Olof Johansson:
       "Coupled cpuidle was meant to merge for 3.5 through Len Brown's tree,
        but didn't go in because the pull request ended up rejected.  So it
        just got merged, and we got this staged branch that enables the
        coupled cpuidle code on OMAP.
      
        With a stable git workflow from the other maintainer we could have
        staged this earlier, but that wasn't the case so we have had to merge
        it late.
      
        The alternative is to hold it off until 3.7 but given that the code is
        well-isolated to OMAP and they are eager to see it go in, I didn't
        push back hard in that direction."
      
      * tag 'pm2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
        ARM: OMAP4: CPUidle: Open broadcast clock-event device.
        ARM: OMAP4: CPUidle: add synchronization for coupled idle states
        ARM: OMAP4: CPUidle: Use coupled cpuidle states to implement SMP cpuidle.
        ARM: OMAP: timer: allow gp timer clock-event to be used on both cpus
      bfdf85df
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      Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc · d1494ba8
      Linus Torvalds 提交于
      Pull ARM SoC fixes from Olof Johansson:
       "A few fixes for merge window fallout, and a bugfix for timer resume on
        PRIMA2."
      
      * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
        ARM: mmp: add missing irqs.h
        arm: mvebu: fix typo in .dtsi comment for Armada XP SoCs
        ARM: PRIMA2: delete redundant codes to restore LATCHED when timer resumes
        ARM: mxc: Include missing irqs.h header
      d1494ba8
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      Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-sh · 0a276d16
      Linus Torvalds 提交于
      Pull SuperH fixes from Paul Mundt.
      
      * tag 'sh-for-linus' of git://github.com/pmundt/linux-sh: (24 commits)
        sh: explicitly include sh_dma.h in setup-sh7722.c
        sh: ecovec: care CN5 VBUS if USB host mode
        sh: sh7724: fixup renesas_usbhs clock settings
        sh: intc: initial irqdomain support.
        sh: pfc: Fix up init ordering mess.
        serial: sh-sci: fix compilation breakage, when DMA is enabled
        dmaengine: shdma: restore partial transfer calculation
        sh: modify the sh_dmae_slave_config for RSPI in setup-sh7757
        sh: Fix up recursive fault in oops with unset TTB.
        sh: pfc: Build fix for pinctrl_remove_gpio_range() changes.
        sh: select the fixed regulator driver on several boards
        sh: ecovec: switch MMC power control to regulators
        sh: add fixed voltage regulators to se7724
        sh: add fixed voltage regulators to sdk7786
        sh: add fixed voltage regulators to rsk
        sh: add fixed voltage regulators to migor
        sh: add fixed voltage regulators to kfr2r09
        sh: add fixed voltage regulators to ap325rxa
        sh: add fixed voltage regulators to sh7757lcr
        sh: add fixed voltage regulators to sh2007
        ...
      0a276d16
    • L
      Merge tag 'md-3.6' of git://neil.brown.name/md · 25aa6a7a
      Linus Torvalds 提交于
      Pull additional md update from NeilBrown:
       "This contains a few patches that depend on plugging changes in the
        block layer so needed to wait for those.
      
        It also contains a Kconfig fix for the new RAID10 support in dm-raid."
      
      * tag 'md-3.6' of git://neil.brown.name/md:
        md/dm-raid: DM_RAID should select MD_RAID10
        md/raid1: submit IO from originating thread instead of md thread.
        raid5: raid5d handle stripe in batch way
        raid5: make_request use batch stripe release
      25aa6a7a
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      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client · c8924234
      Linus Torvalds 提交于
      Pull two ceph fixes from Sage Weil:
       "The first patch fixes up the old crufty open intent code to use the
        atomic_open stuff properly, and the second fixes a possible null deref
        and memory leak with the crypto keys."
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
        libceph: fix crypto key null deref, memory leak
        ceph: simplify+fix atomic_open
      c8924234
    • L
      Merge tag 'ecryptfs-3.6-rc1-fixes' of... · 410fc4ce
      Linus Torvalds 提交于
      Merge tag 'ecryptfs-3.6-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs
      
      Pull ecryptfs fixes from Tyler Hicks:
       - Fixes a bug when the lower filesystem mount options include 'acl',
         but the eCryptfs mount options do not
       - Cleanups in the messaging code
       - Better handling of empty files in the lower filesystem to improve
         usability.  Failed file creations are now cleaned up and empty lower
         files are converted into eCryptfs during open().
       - The write-through cache changes are being reverted due to bugs that
         are not easy to fix.  Stability outweighs the performance
         enhancements here.
       - Improvement to the mount code to catch unsupported ciphers specified
         in the mount options
      
      * tag 'ecryptfs-3.6-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
        eCryptfs: check for eCryptfs cipher support at mount
        eCryptfs: Revert to a writethrough cache model
        eCryptfs: Initialize empty lower files when opening them
        eCryptfs: Unlink lower inode when ecryptfs_create() fails
        eCryptfs: Make all miscdev functions use daemon ptr in file private_data
        eCryptfs: Remove unused messaging declarations and function
        eCryptfs: Copy up POSIX ACL and read-only flags from lower mount
      410fc4ce
    • L
      Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 · 630103ea
      Linus Torvalds 提交于
      Pull CIFS update from Steve French:
       "Adds SMB2 rmdir/mkdir capability to the SMB2/SMB2.1 support in cifs.
      
        I am holding up a few more days on merging the remainder of the
        SMB2/SMB2.1 enablement although it is nearing review completion, in
        order to address some review comments from Jeff Layton on a few of the
        subsequent SMB2 patches, and also to debug an unrelated cifs problem
        that Pavel discovered."
      
      * 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
        CIFS: Add SMB2 support for rmdir
        CIFS: Move rmdir code to ops struct
        CIFS: Add SMB2 support for mkdir operation
        CIFS: Separate protocol specific part from mkdir
        CIFS: Simplify cifs_mkdir call
      630103ea
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      mm: remove node_start_pfn checking in new WARN_ON for now · 8783b6e2
      Linus Torvalds 提交于
      Borislav Petkov reports that the new warning added in commit
      88fdf75d ("mm: warn if pg_data_t isn't initialized with zero")
      triggers for him, and it is the node_start_pfn field that has already
      been initialized once.
      
      The call trace looks like this:
      
        x86_64_start_kernel ->
          x86_64_start_reservations ->
          start_kernel ->
          setup_arch ->
          paging_init ->
          zone_sizes_init ->
          free_area_init_nodes ->
          free_area_init_node
      
      and (with the warning replaced by debug output), Borislav sees
      
        On node 0 totalpages: 4193848
          DMA zone: 64 pages used for memmap
          DMA zone: 6 pages reserved
          DMA zone: 3890 pages, LIFO batch:0
          DMA32 zone: 16320 pages used for memmap
          DMA32 zone: 798464 pages, LIFO batch:31
          Normal zone: 52736 pages used for memmap
          Normal zone: 3322368 pages, LIFO batch:31
        free_area_init_node: pgdat->node_start_pfn: 4423680      <----
        On node 1 totalpages: 4194304
          Normal zone: 65536 pages used for memmap
          Normal zone: 4128768 pages, LIFO batch:31
        free_area_init_node: pgdat->node_start_pfn: 8617984      <----
        On node 2 totalpages: 4194304
          Normal zone: 65536 pages used for memmap
          Normal zone: 4128768 pages, LIFO batch:31
        free_area_init_node: pgdat->node_start_pfn: 12812288     <----
        On node 3 totalpages: 4194304
          Normal zone: 65536 pages used for memmap
          Normal zone: 4128768 pages, LIFO batch:31
      
      so remove the bogus warning for now to avoid annoying people.  Minchan
      Kim is looking at it.
      Reported-by: NBorislav Petkov <bp@amd64.org>
      Cc: Minchan Kim <minchan@kernel.org>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      8783b6e2
    • H
      ARM: mmp: add missing irqs.h · bac6f615
      Haojian Zhuang 提交于
      arch/arm/mach-mmp/gplugd.c:195:13: error: ‘MMP_NR_IRQS’ undeclared here
      (not in a function)
      make[1]: *** [arch/arm/mach-mmp/gplugd.o] Error 1
      
      Include <mach/irqs.h> to fix this issue.
      Signed-off-by: NHaojian Zhuang <haojian.zhuang@gmail.com>
      Signed-off-by: NOlof Johansson <olof@lixom.net>
      bac6f615
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      arm: mvebu: fix typo in .dtsi comment for Armada XP SoCs · 10b683cb
      Thomas Petazzoni 提交于
      The comment was wrongly referring to Armada 370 while the file is
      related to Armada XP.
      Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
      Signed-off-by: NOlof Johansson <olof@lixom.net>
      10b683cb
    • B
      ARM: PRIMA2: delete redundant codes to restore LATCHED when timer resumes · debeaf6c
      Barry Song 提交于
      The only way to write LATCHED registers to write LATCH_BIT to LATCH register,
      that will latch COUNTER into LATCHED.e.g.
      writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base +
      	SIRFSOC_TIMER_LATCH);
      
      Writing values to LATCHED registers directly is useless at all.
      Signed-off-by: NBarry Song <Baohua.Song@csr.com>
      Signed-off-by: NOlof Johansson <olof@lixom.net>
      debeaf6c
    • S
      libceph: fix crypto key null deref, memory leak · f0666b1a
      Sylvain Munaut 提交于
      Avoid crashing if the crypto key payload was NULL, as when it was not correctly
      allocated and initialized.  Also, avoid leaking it.
      Signed-off-by: NSylvain Munaut <tnt@246tNt.com>
      Signed-off-by: NSage Weil <sage@inktank.com>
      Reviewed-by: NAlex Elder <elder@inktank.com>
      f0666b1a
    • S
      ceph: simplify+fix atomic_open · 5ef50c3b
      Sage Weil 提交于
      The initial ->atomic_open op was carried over from the old intent code,
      which was incomplete and didn't really work.  Replace it with a fresh
      method.  In particular:
      
       * always attempt to do an atomic open+lookup, both for the create case
         and for lookups of existing files.
       * fix symlink handling by returning 1 to the VFS so that we can follow
         the link to its destination. This fixes a longstanding ceph bug (#2392).
      Signed-off-by: NSage Weil <sage@inktank.com>
      5ef50c3b
  3. 02 8月, 2012 18 次提交
    • G
      sh: explicitly include sh_dma.h in setup-sh7722.c · 08298f06
      Guennadi Liakhovetski 提交于
      setup-sh7722.c defines several objects, whose types are defined in
      sh_dma.h, so, it has to be included explicitly.
      Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
      Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
      08298f06
    • L
      Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus · 1a9b4993
      Linus Torvalds 提交于
      Pull MIPS updates from Ralf Baechle:
       "The lion share of this pull request are fixes for clk-related breakage
        caused by other changes during this merge window.  For some platforms
        the fix was as simple as selecting HAVE_CLK, for others like the
        Loongson 2 significant restructuring was required.
      
        The remainder are changes required to get the Lantiq code to work
        again."
      
      * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
        MIPS: Loongson 2: Sort out clock managment.
        MIPS: Loongson 1: more clk support and add select HAVE_CLK
        MIPS: txx9: Fix redefinition of clk_* by adding select HAVE_CLK
        MIPS: BCM63xx: Fix redefinition of clk_* by adding select HAVE_CLK
        MIPS: AR7: Fix redefinition of clk_* by adding select HAVE_CLK
        MIPS: Lantiq: Platform specific CLK fixup
        MIPS: Lantiq: Add device_tree_init function
        MIPS: Lantiq: Fix interface clock and PCI control register offset
      1a9b4993
    • L
      Merge branch 'for-linus-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml · 1871e845
      Linus Torvalds 提交于
      Pull UML fixes from Richard Weinberger:
       "This patch set contains mostly fixes and cleanups.  The UML tty driver
        uses now tty_port and is no longer broken like hell  :-)"
      
      * 'for-linus-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
        um: Add arch/x86/um to MAINTAINERS
        um: pass siginfo to guest process
        um: fix ubd_file_size for read-only files
        um: pull interrupt_end() into userspace()
        um: split syscall_trace(), pass pt_regs to it
        um: switch UPT_SET_RETURN_VALUE and regs_return_value to pt_regs
        um: set BLK_CGROUP=y in defconfig
        um: remove count_lock
        um: fully use tty_port
        um: Remove dead code
        um: remove line_ioctl()
        TTY: um/line, use tty from tty_port
        TTY: um/line, add tty_port
      1871e845
    • L
      Merge branch 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm · a6dc7725
      Linus Torvalds 提交于
      Pull ARM DMA engine updates from Russell King:
       "This looks scary at first glance, but what it is is:
         - a rework of the sa11x0 DMA engine driver merged during the previous
           cycle, to extract a common set of helper functions for DMA engine
           implementations.
         - conversion of amba-pl08x.c to use these helper functions.
         - addition of OMAP DMA engine driver (using these helper functions),
           and conversion of some of the OMAP DMA users to use DMA engine.
      
        Nothing in the helper functions is ARM specific, so I hope that other
        implementations can consolidate some of their code by making use of
        these helpers.
      
        This has been sitting in linux-next most of the merge cycle, and has
        been tested by several OMAP folk.  I've tested it on sa11x0 platforms,
        and given it my best shot on my broken platforms which have the
        amba-pl08x controller.
      
        The last point is the addition to feature-removal-schedule.txt, which
        will have a merge conflict.  Between myself and TI, we're planning to
        remove the old TI DMA implementation next year."
      
      Fix up trivial add/add conflicts in Documentation/feature-removal-schedule.txt
      and drivers/dma/{Kconfig,Makefile}
      
      * 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm: (53 commits)
        ARM: 7481/1: OMAP2+: omap2plus_defconfig: enable OMAP DMA engine
        ARM: 7464/1: mmc: omap_hsmmc: ensure probe returns error if DMA channel request fails
        Add feature removal of old OMAP private DMA implementation
        mtd: omap2: remove private DMA API implementation
        mtd: omap2: add DMA engine support
        spi: omap2-mcspi: remove private DMA API implementation
        spi: omap2-mcspi: add DMA engine support
        ARM: omap: remove mmc platform data dma_mask and initialization
        mmc: omap: remove private DMA API implementation
        mmc: omap: add DMA engine support
        mmc: omap_hsmmc: remove private DMA API implementation
        mmc: omap_hsmmc: add DMA engine support
        dmaengine: omap: add support for cyclic DMA
        dmaengine: omap: add support for setting fi
        dmaengine: omap: add support for returning residue in tx_state method
        dmaengine: add OMAP DMA engine driver
        dmaengine: sa11x0-dma: add cyclic DMA support
        dmaengine: sa11x0-dma: fix DMA residue support
        dmaengine: PL08x: ensure all descriptors are freed when channel is released
        dmaengine: PL08x: get rid of write only pool_ctr and free_txd locking
        ...
      a6dc7725
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      Merge branch 'audit' of git://git.linaro.org/people/rmk/linux-arm · 02a6ec6a
      Linus Torvalds 提交于
      Pull ARM audit/signal updates from Russell King:
       "ARM audit/signal handling updates from Al and Will.  This improves on
        the work Viro did last merge window, and sorts out some of the issues
        found with that work."
      
      * 'audit' of git://git.linaro.org/people/rmk/linux-arm:
        ARM: 7475/1: sys_trace: allow all syscall arguments to be updated via ptrace
        ARM: 7474/1: get rid of TIF_SYSCALL_RESTARTSYS
        ARM: 7473/1: deal with handlerless restarts without leaving the kernel
        ARM: 7472/1: pull all work_pending logics into C function
        ARM: 7471/1: Revert "7442/1: Revert "remove unused restart trampoline""
        ARM: 7470/1: Revert "7443/1: Revert "new way of handling ERESTART_RESTARTBLOCK""
      02a6ec6a
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      Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm · 9a2533c3
      Linus Torvalds 提交于
      Pull ARM fixes from Russell King:
       "This fixes various issues found during July"
      
      * 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
        ARM: 7479/1: mm: avoid NULL dereference when flushing gate_vma with VIVT caches
        ARM: Fix undefined instruction exception handling
        ARM: 7480/1: only call smp_send_stop() on SMP
        ARM: 7478/1: errata: extend workaround for erratum #720789
        ARM: 7477/1: vfp: Always save VFP state in vfp_pm_suspend on UP
        ARM: 7476/1: vfp: only clear vfp state for current cpu in vfp_pm_suspend
        ARM: 7468/1: ftrace: Trace function entry before updating index
        ARM: 7467/1: mutex: use generic xchg-based implementation for ARMv6+
        ARM: 7466/1: disable interrupt before spinning endlessly
        ARM: 7465/1: Handle >4GB memory sizes in device tree and mem=size@start option
      9a2533c3
    • R
      um: Add arch/x86/um to MAINTAINERS · b070989a
      Richard Weinberger 提交于
      Signed-off-by: NRichard Weinberger <richard@nod.at>
      b070989a
    • M
      um: pass siginfo to guest process · d3c1cfcd
      Martin Pärtel 提交于
      UML guest processes now get correct siginfo_t for SIGTRAP, SIGFPE,
      SIGILL and SIGBUS. Specifically, si_addr and si_code are now correct
      where previously they were si_addr = NULL and si_code = 128.
      Signed-off-by: NMartin Pärtel <martin.partel@gmail.com>
      Signed-off-by: NRichard Weinberger <richard@nod.at>
      d3c1cfcd
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      um: fix ubd_file_size for read-only files · d4afcba9
      Martin Pärtel 提交于
      Made ubd_file_size not request write access. Fixes use of read-only images.
      Signed-off-by: NMartin Pärtel <martin.partel@gmail.com>
      Signed-off-by: NRichard Weinberger <richard@nod.at>
      d4afcba9
    • N
      md/dm-raid: DM_RAID should select MD_RAID10 · d9f691c3
      NeilBrown 提交于
      Now that DM_RAID supports raid10, it needs to select that code
      to ensure it is included.
      
      Cc: Jonathan Brassow <jbrassow@redhat.com>
      Reported-by: NFengguang Wu <fengguang.wu@intel.com>
      Signed-off-by: NNeilBrown <neilb@suse.de>
      d9f691c3
    • N
      md/raid1: submit IO from originating thread instead of md thread. · f54a9d0e
      NeilBrown 提交于
      queuing writes to the md thread means that all requests go through the
      one processor which may not be able to keep up with very high request
      rates.
      
      So use the plugging infrastructure to submit all requests on unplug.
      If a 'schedule' is needed, we fall back on the old approach of handing
      the requests to the thread for it to handle.
      Signed-off-by: NNeilBrown <neilb@suse.de>
      f54a9d0e
    • S
      raid5: raid5d handle stripe in batch way · 46a06401
      Shaohua Li 提交于
      Let raid5d handle stripe in batch way to reduce conf->device_lock locking.
      Signed-off-by: NShaohua Li <shli@fusionio.com>
      Signed-off-by: NNeilBrown <neilb@suse.de>
      46a06401
    • S
      raid5: make_request use batch stripe release · 8811b596
      Shaohua Li 提交于
      make_request() does stripe release for every stripe and the stripe usually has
      count 1, which makes previous release_stripe() optimization not work. In my
      test, this release_stripe() becomes the heaviest pleace to take
      conf->device_lock after previous patches applied.
      
      Below patch makes stripe release batch. All the stripes will be released in
      unplug. The STRIPE_ON_UNPLUG_LIST bit is to protect concurrent access stripe
      lru.
      Signed-off-by: NShaohua Li <shli@fusionio.com>
      Signed-off-by: NNeilBrown <neilb@suse.de>
      8811b596
    • A
      um: pull interrupt_end() into userspace() · b8a42095
      Al Viro 提交于
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: NRichard Weinberger <richard@nod.at>
      b8a42095
    • A
      um: split syscall_trace(), pass pt_regs to it · 1bfa2317
      Al Viro 提交于
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      [richard@nod.at: Fixed some minor build issues]
      Signed-off-by: NRichard Weinberger <richard@nod.at>
      1bfa2317
    • A
      a3170d2e
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      Merge tag 'fbdev-updates-for-3.6' of git://github.com/schandinat/linux-2.6 · d4fdc325
      Linus Torvalds 提交于
      Pull fbdev updates from Florian Tobias Schandinat:
       - large updates for OMAP
         - support for LCD3 overlay manager (omap5)
         - omapdss output cleanup
         - removal of passive matrix LCD support as there are no drivers for
           such panels for DSS or DSS2 and nobody complained (cleanup)
       - large updates for SH Mobile
         - overlay support
         - separating MERAM (cache) from framebuffer driver
       - some updates for Exynos and da8xx-fb
       - various other small patches
      
      * tag 'fbdev-updates-for-3.6' of git://github.com/schandinat/linux-2.6: (78 commits)
        da8xx-fb: fix compile issue due to missing include
        fbdev: Make pixel_to_pat() failure mode more friendly
        da8xx-fb: do not turn ON LCD backlight unless LCDC is enabled
        fbdev: sh_mobile_lcdc: Fix vertical panning step
        video: exynos mipi dsi: Fix mipi dsi regulators handling issue
        video: da8xx-fb: do clock reset of revision 2 LCDC before enabling
        arm: da850: configure LCDC fifo threshold
        video: da8xx-fb: configure FIFO threshold to reduce underflow errors
        video: da8xx-fb: fix flicker due to 1 frame delay in updated frame
        video: da8xx-fb rev2: fix disabling of palette completion interrupt
        da8xx-fb: add missing FB_BLANK operations
        video: exynos_dp: use usleep_range instead of delay
        video: exynos_dp: check the only INTERLANE_ALIGN_DONE bit during Link Training
        fb: epson1355fb: Fix section mismatch
        video: exynos_dp: fix wrong DPCD address during Link Training
        video/smscufx: fix line counting in fb_write
        aty128fb: Fix coding style issues
        fbdev: sh_mobile_lcdc: Fix pan offset computation in YUV mode
        fbdev: sh_mobile_lcdc: Fix overlay registers update during pan operation
        fbdev: sh_mobile_lcdc: Support horizontal panning
        ...
      d4fdc325
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      Merge tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · 9a51cf28
      Linus Torvalds 提交于
      Pull sound fixes from Takashi Iwai:
       "A collection of small fixes that have been found recently.  Most of
        the commits are regression fixes in HD-audio and some other random
        drivers."
      
      * tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: snd-usb: fix clock source validity index
        ALSA: hda - Fix mute-LED GPIO initialization for IDT codecs
        ALSA: hda - Add descriptions for missing IDT 92HD83x models
        ALSA: hda - Fix polarity of mute LED on HP Mini 210
        ALSA: es1688 - freeup resources on init failure
        ALSA: hda - Workaround for silent output on VAIO Z with ALC889
        ALSA: hda - Fix WARNING from HDMI/DP parser
        ALSA: hda - Detach from converter at closing in patch_hdmi.c
        ALSA: hda - Fix mute-LED GPIO setup for HP Mini 210
        ALSA: mpu401: Fix missing initialization of irq field
        ALSA: hda - Fix invalid D3 of headphone DAC on VT202x codecs
      9a51cf28