29 Oct, 2011

13 commits

  • It is generally a better idea to make intentionally empty files
    contain the human-readable /* empty */ comment, also it makes
    the files play nice with "make distclean".

    Reported-by: Jeff Garzik
    Signed-off-by: Linus Walleij
    Acked-by: Jeff Garzik
    Signed-off-by: Grant Likely

    Linus Walleij
     
  • A missing mach/gpio.h prevents building gpiolib on versatile express.

    CC drivers/gpio/gpiolib.o
    In file included from /.../linux/include/linux/gpio.h:18:0,
    from /.../linux/drivers/gpio/gpiolib.c:10:
    /.../linux/arch/arm/include/asm/gpio.h:5:23: fatal error: mach/gpio.h: No such file or directory
    compilation terminated.
    make[3]: *** [drivers/gpio/gpiolib.o] Error 1
    make[2]: *** [drivers/gpio] Error 2
    make[1]: *** [drivers] Error 2
    make: *** [sub-make] Error 2

    Signed-off-by: Grant Likely

    Grant Likely
     
  • When compiling ath6kl for beagleboard (omap2plus_defconfig plus
    CONFIG_ATH6KL, CONFIG_OF disable) with current linux-next compilation
    fails:

    include/linux/of.h:269: error: 'ENOSYS' undeclared (first use in this function)
    include/linux/of.h:276: error: 'ENOSYS' undeclared (first use in this function)
    include/linux/of.h:289: error: 'ENOSYS' undeclared (first use in this function)

    Fix this by including errno.h from of.h.

    Signed-off-by: Kalle Valo
    Acked-by: Geert Uytterhoeven
    Signed-off-by: Grant Likely

    Kalle Valo
     
  • * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (204 commits)
    [SCSI] qla4xxx: export address/port of connection (fix udev disk names)
    [SCSI] ipr: Fix BUG on adapter dump timeout
    [SCSI] megaraid_sas: Fix instance access in megasas_reset_timer
    [SCSI] hpsa: change confusing message to be more clear
    [SCSI] iscsi class: fix vlan configuration
    [SCSI] qla4xxx: fix data alignment and use nl helpers
    [SCSI] iscsi class: fix link local mispelling
    [SCSI] iscsi class: Replace iscsi_get_next_target_id with IDA
    [SCSI] aacraid: use lower snprintf() limit
    [SCSI] lpfc 8.3.27: Change driver version to 8.3.27
    [SCSI] lpfc 8.3.27: T10 additions for SLI4
    [SCSI] lpfc 8.3.27: Fix queue allocation failure recovery
    [SCSI] lpfc 8.3.27: Change algorithm for getting physical port name
    [SCSI] lpfc 8.3.27: Changed worst case mailbox timeout
    [SCSI] lpfc 8.3.27: Miscellanous logic and interface fixes
    [SCSI] megaraid_sas: Changelog and version update
    [SCSI] megaraid_sas: Add driver workaround for PERC5/1068 kdump kernel panic
    [SCSI] megaraid_sas: Add multiple MSI-X vector/multiple reply queue support
    [SCSI] megaraid_sas: Add support for MegaRAID 9360/9380 12GB/s controllers
    [SCSI] megaraid_sas: Clear FUSION_IN_RESET before enabling interrupts
    ...

    Linus Torvalds
     
  • * 'for-linus' of git://ceph.newdream.net/git/ceph-client:
    libceph: fix double-free of page vector
    ceph: fix 32-bit ino numbers
    libceph: force resend of osd requests if we skip an osdmap
    ceph: use kernel DNS resolver
    ceph: fix ceph_monc_init memory leak
    ceph: let the set_layout ioctl set single traits
    Revert "ceph: don't truncate dirty pages in invalidate work thread"
    ceph: replace leading spaces with tabs
    libceph: warn on msg allocation failures
    libceph: don't complain on msgpool alloc failures
    libceph: always preallocate mon connection
    libceph: create messenger with client
    ceph: document ioctls
    ceph: implement (optional) max read size
    ceph: rename rsize -> rasize
    ceph: make readpages fully async

    Linus Torvalds
     
  • * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (549 commits)
    ALSA: hda - Fix ADC input-amp handling for Cx20549 codec
    ALSA: hda - Keep EAPD turned on for old Conexant chips
    ALSA: hda/realtek - Fix missing volume controls with ALC260
    ASoC: wm8940: Properly set codec->dapm.bias_level
    ALSA: hda - Fix pin-config for ASUS W90V
    ALSA: hda - Fix surround/CLFE headphone and speaker pins order
    ALSA: hda - Fix typo
    ALSA: Update the sound git tree URL
    ALSA: HDA: Add new revision for ALC662
    ASoC: max98095: Convert codec->hw_write to snd_soc_write
    ASoC: keep pointer to resource so it can be freed
    ASoC: sgtl5000: Fix wrong mask in some snd_soc_update_bits calls
    ASoC: wm8996: Fix wrong mask for setting WM8996_AIF_CLOCKING_2
    ASoC: da7210: Add support for line out and DAC
    ASoC: da7210: Add support for DAPM
    ALSA: hda/realtek - Fix DAC assignments of multiple speakers
    ASoC: Use SGTL5000_LINREG_VDDD_MASK instead of hardcoded mask value
    ASoC: Set sgtl5000->ldo in ldo_regulator_register
    ASoC: wm8996: Use SND_SOC_DAPM_AIF_OUT for AIF2 Capture
    ASoC: wm8994: Use SND_SOC_DAPM_AIF_OUT for AIF3 Capture
    ...

    Linus Torvalds
     
  • * 'next-rebase' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci:
    PCI: Clean-up MPS debug output
    pci: Clamp pcie_set_readrq() when using "performance" settings
    PCI: enable MPS "performance" setting to properly handle bridge MPS
    PCI: Workaround for Intel MPS errata
    PCI: Add support for PASID capability
    PCI: Add implementation for PRI capability
    PCI: Export ATS functions to modules
    PCI: Move ATS implementation into own file
    PCI / PM: Remove unnecessary error variable from acpi_dev_run_wake()
    PCI hotplug: acpiphp: Prevent deadlock on PCI-to-PCI bridge remove
    PCI / PM: Extend PME polling to all PCI devices
    PCI quirk: mmc: Always check for lower base frequency quirk for Ricoh 1180:e823
    PCI: Make pci_setup_bridge() non-static for use by arch code
    x86: constify PCI raw ops structures
    PCI: Add quirk for known incorrect MPSS
    PCI: Add Solarflare vendor ID and SFC4000 device IDs

    Linus Torvalds
     
  • * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (83 commits)
    mmc: fix compile error when CONFIG_BLOCK is not enabled
    mmc: core: Cleanup eMMC4.5 conditionals
    mmc: omap_hsmmc: if multiblock reads are broken, disable them
    mmc: core: add workaround for controllers with broken multiblock reads
    mmc: core: Prevent too long response times for suspend
    mmc: recognise SDIO cards with SDIO_CCCR_REV 3.00
    mmc: sd: Handle SD3.0 cards not supporting UHS-I bus speed mode
    mmc: core: support HPI send command
    mmc: core: Add cache control for eMMC4.5 device
    mmc: core: Modify the timeout value for writing power class
    mmc: core: new discard feature support at eMMC v4.5
    mmc: core: mmc sanitize feature support for v4.5
    mmc: dw_mmc: modify DATA register offset
    mmc: sdhci-pci: add flag for devices that can support runtime PM
    mmc: omap_hsmmc: ensure pbias configuration is always done
    mmc: core: Add Power Off Notify Feature eMMC 4.5
    mmc: sdhci-s3c: fix potential NULL dereference
    mmc: replace printk with appropriate display macro
    mmc: core: Add default timeout value for CMD6
    mmc: sdhci-pci: add runtime pm support
    ...

    Linus Torvalds
     
  • …git-cur/linux-2.6-arm

    * 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: (178 commits)
    ARM: 7139/1: fix compilation with CONFIG_ARM_ATAG_DTB_COMPAT and large TEXT_OFFSET
    ARM: gic, local timers: use the request_percpu_irq() interface
    ARM: gic: consolidate PPI handling
    ARM: switch from NO_MACH_MEMORY_H to NEED_MACH_MEMORY_H
    ARM: mach-s5p64x0: remove mach/memory.h
    ARM: mach-s3c64xx: remove mach/memory.h
    ARM: plat-mxc: remove mach/memory.h
    ARM: mach-prima2: remove mach/memory.h
    ARM: mach-zynq: remove mach/memory.h
    ARM: mach-bcmring: remove mach/memory.h
    ARM: mach-davinci: remove mach/memory.h
    ARM: mach-pxa: remove mach/memory.h
    ARM: mach-ixp4xx: remove mach/memory.h
    ARM: mach-h720x: remove mach/memory.h
    ARM: mach-vt8500: remove mach/memory.h
    ARM: mach-s5pc100: remove mach/memory.h
    ARM: mach-tegra: remove mach/memory.h
    ARM: plat-tcc: remove mach/memory.h
    ARM: mach-mmp: remove mach/memory.h
    ARM: mach-cns3xxx: remove mach/memory.h
    ...

    Fix up mostly pretty trivial conflicts in:
    - arch/arm/Kconfig
    - arch/arm/include/asm/localtimer.h
    - arch/arm/kernel/Makefile
    - arch/arm/mach-shmobile/board-ap4evb.c
    - arch/arm/mach-u300/core.c
    - arch/arm/mm/dma-mapping.c
    - arch/arm/mm/proc-v7.S
    - arch/arm/plat-omap/Kconfig
    largely due to some CONFIG option renaming (ie CONFIG_PM_SLEEP ->
    CONFIG_ARM_CPU_SUSPEND for the arm-specific suspend code etc) and
    addition of NEED_MACH_MEMORY_H next to HAVE_IDE.

    Linus Torvalds
     
  • * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/vfs-queue: (21 commits)
    leases: fix write-open/read-lease race
    nfs: drop unnecessary locking in llseek
    ext4: replace cut'n'pasted llseek code with generic_file_llseek_size
    vfs: add generic_file_llseek_size
    vfs: do (nearly) lockless generic_file_llseek
    direct-io: merge direct_io_walker into __blockdev_direct_IO
    direct-io: inline the complete submission path
    direct-io: separate map_bh from dio
    direct-io: use a slab cache for struct dio
    direct-io: rearrange fields in dio/dio_submit to avoid holes
    direct-io: fix a wrong comment
    direct-io: separate fields only used in the submission path from struct dio
    vfs: fix spinning prevention in prune_icache_sb
    vfs: add a comment to inode_permission()
    vfs: pass all mask flags check_acl and posix_acl_permission
    vfs: add hex format for MAY_* flag values
    vfs: indicate that the permission functions take all the MAY_* flags
    compat: sync compat_stats with statfs.
    vfs: add "device" tag to /proc/self/mountstats
    cleanup: vfs: small comment fix for block_invalidatepage
    ...

    Fix up trivial conflict in fs/gfs2/file.c (llseek changes)

    Linus Torvalds
     
  • * http://sucs.org/~rohan/git/gfs2-3.0-nmw: (24 commits)
    GFS2: Move readahead of metadata during deallocation into its own function
    GFS2: Remove two unused variables
    GFS2: Misc fixes
    GFS2: rewrite fallocate code to write blocks directly
    GFS2: speed up delete/unlink performance for large files
    GFS2: Fix off-by-one in gfs2_blk2rgrpd
    GFS2: Clean up ->page_mkwrite
    GFS2: Correctly set goal block after allocation
    GFS2: Fix AIL flush issue during fsync
    GFS2: Use cached rgrp in gfs2_rlist_add()
    GFS2: Call do_strip() directly from recursive_scan()
    GFS2: Remove obsolete assert
    GFS2: Cache the most recently used resource group in the inode
    GFS2: Make resource groups "append only" during life of fs
    GFS2: Use rbtree for resource groups and clean up bitmap buffer ref count scheme
    GFS2: Fix lseek after SEEK_DATA, SEEK_HOLE have been added
    GFS2: Clean up gfs2_create
    GFS2: Use ->dirty_inode()
    GFS2: Fix bug trap and journaled data fsync
    GFS2: Fix inode allocation error path
    ...

    Linus Torvalds
     
  • * '3.2-without-smb2' of git://git.samba.org/sfrench/cifs-2.6: (52 commits)
    Fix build break when freezer not configured
    Add definition for share encryption
    CIFS: Make cifs_push_locks send as many locks at once as possible
    CIFS: Send as many mandatory unlock ranges at once as possible
    CIFS: Implement caching mechanism for posix brlocks
    CIFS: Implement caching mechanism for mandatory brlocks
    CIFS: Fix DFS handling in cifs_get_file_info
    CIFS: Fix error handling in cifs_readv_complete
    [CIFS] Fixup trivial checkpatch warning
    [CIFS] Show nostrictsync and noperm mount options in /proc/mounts
    cifs, freezer: add wait_event_freezekillable and have cifs use it
    cifs: allow cifs_max_pending to be readable under /sys/module/cifs/parameters
    cifs: tune bdi.ra_pages in accordance with the rsize
    cifs: allow for larger rsize= options and change defaults
    cifs: convert cifs_readpages to use async reads
    cifs: add cifs_async_readv
    cifs: fix protocol definition for READ_RSP
    cifs: add a callback function to receive the rest of the frame
    cifs: break out 3rd receive phase into separate function
    cifs: find mid earlier in receive codepath
    ...

    Linus Torvalds
     
  • * 'for-linus' of git://oss.sgi.com/xfs/xfs: (69 commits)
    xfs: add AIL pushing tracepoints
    xfs: put in missed fix for merge problem
    xfs: do not flush data workqueues in xfs_flush_buftarg
    xfs: remove XFS_bflush
    xfs: remove xfs_buf_target_name
    xfs: use xfs_ioerror_alert in xfs_buf_iodone_callbacks
    xfs: clean up xfs_ioerror_alert
    xfs: clean up buffer allocation
    xfs: remove buffers from the delwri list in xfs_buf_stale
    xfs: remove XFS_BUF_STALE and XFS_BUF_SUPER_STALE
    xfs: remove XFS_BUF_SET_VTYPE and XFS_BUF_SET_VTYPE_REF
    xfs: remove XFS_BUF_FINISH_IOWAIT
    xfs: remove xfs_get_buftarg_list
    xfs: fix buffer flushing during unmount
    xfs: optimize fsync on directories
    xfs: reduce the number of log forces from tail pushing
    xfs: Don't allocate new buffers on every call to _xfs_buf_find
    xfs: simplify xfs_trans_ijoin* again
    xfs: unlock the inode before log force in xfs_change_file_space
    xfs: unlock the inode before log force in xfs_fs_nfs_commit_metadata
    ...

    Linus Torvalds
     

28 Oct, 2011

27 commits

  • In setlease, we use i_writecount to decide whether we can give out a
    read lease.

    In open, we break leases before incrementing i_writecount.

    There is therefore a window between the break lease and the i_writecount
    increment when setlease could add a new read lease.

    This would leave us with a simultaneous write open and read lease, which
    shouldn't happen.

    Signed-off-by: J. Bruce Fields
    Signed-off-by: Christoph Hellwig

    J. Bruce Fields
     
  • This makes NFS follow the standard generic_file_llseek locking scheme.

    Cc: Trond.Myklebust@netapp.com
    Signed-off-by: Andi Kleen
    Signed-off-by: Christoph Hellwig

    Andi Kleen
     
  • This gives ext4 the benefits of unlocked llseek.

    Cc: tytso@mit.edu
    Signed-off-by: Andi Kleen
    Signed-off-by: Christoph Hellwig

    Andi Kleen
     
  • Add a generic_file_llseek variant to the VFS that allows passing in
    the maximum file size of the file system, instead of always
    using maxbytes from the superblock.

    This can be used to eliminate some cut'n'paste seek code in ext4.

    Signed-off-by: Andi Kleen
    Signed-off-by: Christoph Hellwig

    Andi Kleen
     
  • The i_mutex lock use of generic _file_llseek hurts. Independent processes
    accessing the same file synchronize over a single lock, even though
    they have no need for synchronization at all.

    Under high utilization this can cause llseek to scale very poorly on larger
    systems.

    This patch does some rethinking of the llseek locking model:

    First the 64bit f_pos is not necessarily atomic without locks
    on 32bit systems. This can already cause races with read() today.
    This was discussed on linux-kernel in the past and deemed acceptable.
    The patch does not change that.

    Let's look at the different seek variants:

    SEEK_SET: Doesn't really need any locking.
    If there's a race one writer wins, the other loses.

    For 32bit the non atomic update races against read()
    stay the same. Without a lock they can also happen
    against write() now. The read() race was deemed
    acceptable in past discussions, and I think if it's
    ok for read it's ok for write too.

    => Don't need a lock.

    SEEK_END: This behaves like SEEK_SET plus it reads
    the maximum size too. Reading the maximum size would have the
    32bit atomic problem. But luckily we already have a way to read
    the maximum size without locking (i_size_read), so we
    can just use that instead.

    Without i_mutex there is no synchronization with write() anymore,
    however since the write() update is atomic on 64bit it just behaves
    like another racy SEEK_SET. On non atomic 32bit it's the same
    as SEEK_SET.

    => Don't need a lock, but need to use i_size_read()

    SEEK_CUR: This has a read-modify-write race window
    on the same file. One could argue that any application
    doing unsynchronized seeks on the same file is already broken.
    But for the sake of not adding a regression here I'm
    using the file->f_lock to synchronize this. Using this
    lock is much better than the inode mutex because it doesn't
    synchronize between processes.

    => So still need a lock, but can use a f_lock.

    This patch implements this new scheme in generic_file_llseek.
    I dropped generic_file_llseek_unlocked and changed all callers.

    Signed-off-by: Andi Kleen
    Signed-off-by: Christoph Hellwig

    Andi Kleen
     
  • This doesn't change anything for the compiler, but hch thought it would
    make the code clearer.

    I moved the reference counting into its own little inline.

    Signed-off-by: Andi Kleen
    Acked-by: Jeff Moyer
    Signed-off-by: Christoph Hellwig

    Andi Kleen
     
  • Add inlines to all the submission path functions. While this increases
    code size it also gives gcc a lot of optimization opportunities
    in this critical hotpath.

    In particular -- together with some other changes -- this
    allows gcc to get rid of the unnecessary clearing of
    sdio at the beginning and optimize the messy parameter passing.
    Any non inlining of a function which takes a sdio parameter
    would break this optimization because they cannot be done if the
    address of a structure is taken.

    Note that benefits are only seen with CONFIG_OPTIMIZE_INLINING
    and CONFIG_CC_OPTIMIZE_FOR_SIZE both set to off.

    This gives about 2.2% improvement on a large database benchmark
    with a high IOPS rate.

    Signed-off-by: Andi Kleen
    Signed-off-by: Christoph Hellwig

    Andi Kleen
     
  • Only a single b_private field in the map_bh buffer head is needed after
    the submission path. Move map_bh separately to avoid storing
    this information in the long term slab.

    This avoids the weird 104 byte hole in struct dio_submit which also needed
    to be memseted early.

    Signed-off-by: Andi Kleen
    Signed-off-by: Christoph Hellwig

    Andi Kleen
     
  • A direct slab call is slightly faster than kmalloc and can be better cached
    per CPU. It also avoids rounding to the next kmalloc slab.

    In addition this enforces cache line alignment for struct dio to avoid
    any false sharing.

    Signed-off-by: Andi Kleen
    Acked-by: Jeff Moyer
    Signed-off-by: Christoph Hellwig

    Andi Kleen
     
  • Fix most problems reported by pahole.

    There is still a weird 104 byte hole after map_bh. I'm not sure what
    causes this.

    Signed-off-by: Andi Kleen
    Acked-by: Jeff Moyer
    Signed-off-by: Christoph Hellwig

    Andi Kleen
     
  • There's nothing on the stack, even before my changes.

    Signed-off-by: Andi Kleen
    Acked-by: Jeff Moyer
    Signed-off-by: Christoph Hellwig

    Andi Kleen
     
  • This large, but largely mechanic, patch moves all fields in struct dio
    that are only used in the submission path into a separate on stack
    data structure. This has the advantage that the memory is very likely
    cache hot, which is not guaranteed for memory fresh out of kmalloc.

    This also gives gcc more optimization potential because it can easier
    determine that there are no external aliases for these variables.

    The sdio initialization is a initialization now instead of memset.
    This allows gcc to break sdio into individual fields and optimize
    away unnecessary zeroing (after all the functions are inlined)

    Signed-off-by: Andi Kleen
    Acked-by: Jeff Moyer
    Signed-off-by: Christoph Hellwig

    Andi Kleen
     
  • We need to move the inode to the end of the list to actually make the
    spinning prevention explained in the comment above it work. With a
    plain list_move it will simply stay in place as we're always reclaiming
    from the head of the list.

    Signed-off-by: Christoph Hellwig

    Christoph Hellwig
     
  • Acked-by: J. Bruce Fields
    Acked-by: David Howells
    Signed-off-by: Andreas Gruenbacher
    Signed-off-by: Aneesh Kumar K.V
    Signed-off-by: Christoph Hellwig

    Andreas Gruenbacher
     
  • Acked-by: J. Bruce Fields
    Acked-by: David Howells
    Signed-off-by: Andreas Gruenbacher
    Signed-off-by: Aneesh Kumar K.V
    Signed-off-by: Christoph Hellwig

    Andreas Gruenbacher
     
  • We are going to add more flags and having them in hex format
    make it simpler

    Acked-by: J. Bruce Fields
    Acked-by: David Howells
    Signed-off-by: Aneesh Kumar K.V
    Signed-off-by: Christoph Hellwig

    Aneesh Kumar K.V
     
  • Acked-by: J. Bruce Fields
    Acked-by: David Howells
    Signed-off-by: Andreas Gruenbacher
    Signed-off-by: Aneesh Kumar K.V
    Signed-off-by: Christoph Hellwig

    Andreas Gruenbacher
     
  • This was found by inspection while tracking a similar
    bug in compat_statfs64, that has been fixed in mainline
    since decemeber.

    - This fixes a bug where not all of the f_spare fields
    were cleared on mips and s390.
    - Add the f_flags field to struct compat_statfs
    - Copy f_flags to userspace in case someone cares.
    - Use __clear_user to copy the f_spare field to userspace
    to ensure that all of the elements of f_spare are cleared.
    On some architectures f_spare is has 5 ints and on some
    architectures f_spare only has 4 ints. Which makes
    the previous technique of clearing each int individually
    broken.

    I don't expect anyone actually uses the old statfs system
    call anymore but if they do let them benefit from having
    the compat and the native version working the same.

    Signed-off-by: Eric W. Biederman
    Signed-off-by: Christoph Hellwig

    Eric W. Biederman
     
  • * 'drm-core-next' of git://people.freedesktop.org/~airlied/linux: (290 commits)
    Revert "drm/ttm: add a way to bo_wait for either the last read or last write"
    Revert "drm/radeon/kms: add a new gem_wait ioctl with read/write flags"
    vmwgfx: Don't pass unused arguments to do_dirty functions
    vmwgfx: Emulate depth 32 framebuffers
    drm/radeon: Lower the severity of the radeon lockup messages.
    drm/i915/dp: Fix eDP on PCH DP on CPT/PPT
    drm/i915/dp: Introduce is_cpu_edp()
    drm/i915: use correct SPD type value
    drm/i915: fix ILK+ infoframe support
    drm/i915: add DP test request handling
    drm/i915: read full receiver capability field during DP hot plug
    drm/i915/dp: Remove eDP special cases from bandwidth checks
    drm/i915/dp: Fix the math in intel_dp_link_required
    drm/i915/panel: Always record the backlight level again (but cleverly)
    i915: Move i915_read/write out of line
    drm/i915: remove transcoder PLL mashing from mode_set per specs
    drm/i915: if transcoder disable fails, say which
    drm/i915: set watermarks for third pipe on IVB
    drm/i915: export a CPT mode set verification function
    drm/i915: fix transcoder PLL select masking
    ...

    Linus Torvalds
     
  • * 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
    x86-64, doc: Remove int 0xcc from entry_64.S documentation
    x86, vsyscall: Add missing to arch/x86/mm/fault.c

    Fix up trivial conflicts in arch/x86/mm/fault.c (asm/fixmap.h vs
    asm/vsyscall.h: both work, which to use? Whatever..)

    Linus Torvalds
     
  • * 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
    x86: uv2: Workaround for UV2 Hub bug (system global address format)

    Linus Torvalds
     
  • * 'x86-spinlocks-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
    x86, ticketlock: remove obsolete comment
    x86, cmpxchg: Use __compiletime_error() to make usage messages a bit nicer
    x86, ticketlock: Make __ticket_spin_trylock common
    x86, ticketlock: Convert __ticket_spin_lock to use xadd()
    x86, ticketlock: Convert spin loop to C
    x86, ticketlock: Clean up types and accessors
    x86: Use xadd helper more widely
    x86: Add xadd helper macro
    x86, cmpxchg: Unify cmpxchg into cmpxchg.h
    x86, cmpxchg: Move 64-bit set64_bit() to match 32-bit
    x86, cmpxchg: Move 32-bit __cmpxchg_wrong_size to match 64 bit.
    x86, cmpxchg: has LOCK_PREFIX

    Linus Torvalds
     
  • * 'x86-rdrand-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
    x86, random: Verify RDRAND functionality and allow it to be disabled
    x86, random: Architectural inlines to get random integers with RDRAND
    random: Add support for architectural random hooks

    Fix up trivial conflicts in drivers/char/random.c: the architectural
    random hooks touched "get_random_int()" that was simplified to use MD5
    and not do the keyptr thing any more (see commit 6e5714eaf77d: "net:
    Compute protocol sequence numbers and fragment IDs using MD5").

    Linus Torvalds
     
  • * 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
    x86, microcode, AMD: Add microcode revision to /proc/cpuinfo
    x86, microcode: Correct microcode revision format
    coretemp: Get microcode revision from cpu_data
    x86, intel: Use c->microcode for Atom errata check
    x86, intel: Output microcode revision in /proc/cpuinfo
    x86, microcode: Don't request microcode from userspace unnecessarily

    Fix up trivial conflicts in arch/x86/kernel/cpu/amd.c (conflict between
    moving AMD BSP code to cpu_dev helper function and adding AMD microcode
    revision to /proc/cpuinfo code)

    Linus Torvalds
     
  • * 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
    x86: Hyper-V: Integrate the clocksource with Hyper-V detection code

    Fix up conflicts in drivers/staging/hv/Makefile manually (some of the hv
    code has moved out of staging to drivers/hv/)

    Linus Torvalds
     
  • * 'x86-geode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
    x86: geode: New PCEngines Alix system driver

    Linus Torvalds
     
  • * 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
    x86, cpu: Add cpufeature flag for PCIDs

    Linus Torvalds