1. 09 Feb, 2016 1 commit
    • Denys Vlasenko's avatar
      x86/asm/bitops: Force inlining of test_and_set_bit and friends · 8dd5032d
      Denys Vlasenko authored
      Sometimes GCC mysteriously doesn't inline very small functions
      we expect to be inlined, see:
      
        https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66122
      
      Arguably, GCC should do better, but GCC people aren't willing
      to invest time into it and are asking to use __always_inline
      instead.
      
      With this .config:
      
        http://busybox.net/~vda/kernel_config_OPTIMIZE_INLINING_and_Os
      
      here's an example of functions getting deinlined many times:
      
        test_and_set_bit (166 copies, ~1260 calls)
               55                      push   %rbp
               48 89 e5                mov    %rsp,%rbp
               f0 48 0f ab 3e          lock bts %rdi,(%rsi)
               72 04                   jb     <test_and_set_bit+0xf>
               31 c0                   xor    %eax,%eax
               eb 05                   jmp    <test_and_set_bit+0x14>
               b8 01 00 00 00          mov    $0x1,%eax
               5d                      pop    %rbp
               c3                      retq
      
        test_and_clear_bit (124 copies, ~1000 calls)
               55                      push   %rbp
               48 89 e5                mov    %rsp,%rbp
               f0 48 0f b3 3e          lock btr %rdi,(%rsi)
               72 04                   jb     <test_and_clear_bit+0xf>
               31 c0                   xor    %eax,%eax
               eb 05                   jmp    <test_and_clear_bit+0x14>
               b8 01 00 00 00          mov    $0x1,%eax
               5d                      pop    %rbp
               c3                      retq
      
        change_bit (3 copies, 8 calls)
               55                      push   %rbp
               48 89 e5                mov    %rsp,%rbp
               f0 48 0f bb 3e          lock btc %rdi,(%rsi)
               5d                      pop    %rbp
               c3                      retq
      
        clear_bit_unlock (2 copies, 11 calls)
               55                      push   %rbp
               48 89 e5                mov    %rsp,%rbp
               f0 48 0f b3 3e          lock btr %rdi,(%rsi)
               5d                      pop    %rbp
               c3                      retq
      
      This patch works it around via s/inline/__always_inline/.
      
      Code size decrease by ~13.5k after the patch:
      
            text     data      bss       dec    filename
        92110727 20826144 36417536 149354407    vmlinux.before
        92097234 20826176 36417536 149340946    vmlinux.after
      Signed-off-by: default avatarDenys Vlasenko <dvlasenk@redhat.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Brian Gerst <brgerst@gmail.com>
      Cc: David Rientjes <rientjes@google.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Thomas Graf <tgraf@suug.ch>
      Link: http://lkml.kernel.org/r/1454881887-1367-1-git-send-email-dvlasenk@redhat.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      8dd5032d
  2. 01 Feb, 2016 4 commits
  3. 30 Jan, 2016 7 commits
  4. 29 Jan, 2016 11 commits
  5. 27 Jan, 2016 1 commit
  6. 24 Jan, 2016 16 commits
    • Linus Torvalds's avatar
      Linux 4.5-rc1 · 92e963f5
      Linus Torvalds authored
      92e963f5
    • Linus Torvalds's avatar
      Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus · e2464688
      Linus Torvalds authored
      Pull MIPS updates from Ralf Baechle:
       "This is the main pull request for MIPS for 4.5 plus some 4.4 fixes.
      
        The executive summary:
      
         - ATH79 platform improvments, use DT bindings for the ATH79 USB PHY.
         - Avoid useless rebuilds for zboot.
         - jz4780: Add NEMC, BCH and NAND device tree nodes
         - Initial support for the MicroChip's DT platform.  As all the device
           drivers are missing this is still of limited use.
         - Some Loongson3 cleanups.
         - The unavoidable whitespace polishing.
         - Reduce clock skew when synchronizing the CPU cycle counters on CPU
           startup.
         - Add MIPS R6 fixes.
         - Lots of cleanups across arch/mips as fallout from KVM.
         - Lots of minor fixes and changes for IEEE 754-2008 support to the
           FPU emulator / fp-assist software.
         - Minor Ralink, BCM47xx and bcm963xx platform support improvments.
         - Support SMP on BCM63168"
      
      * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (84 commits)
        MIPS: zboot: Add support for serial debug using the PROM
        MIPS: zboot: Avoid useless rebuilds
        MIPS: BMIPS: Enable ARCH_WANT_OPTIONAL_GPIOLIB
        MIPS: bcm63xx: nvram: Remove unused bcm63xx_nvram_get_psi_size() function
        MIPS: bcm963xx: Update bcm_tag field image_sequence
        MIPS: bcm963xx: Move extended flash address to bcm_tag header file
        MIPS: bcm963xx: Move Broadcom BCM963xx image tag data structure
        MIPS: bcm63xx: nvram: Use nvram structure definition from header file
        MIPS: bcm963xx: Add Broadcom BCM963xx board nvram data structure
        MAINTAINERS: Add KVM for MIPS entry
        MIPS: KVM: Add missing newline to kvm_err()
        MIPS: Move KVM specific opcodes into asm/inst.h
        MIPS: KVM: Use cacheops.h definitions
        MIPS: Break down cacheops.h definitions
        MIPS: Use EXCCODE_ constants with set_except_vector()
        MIPS: Update trap codes
        MIPS: Move Cause.ExcCode trap codes to mipsregs.h
        MIPS: KVM: Make kvm_mips_{init,exit}() static
        MIPS: KVM: Refactor added offsetof()s
        MIPS: KVM: Convert EXPORT_SYMBOL to _GPL
        ...
      e2464688
    • Linus Torvalds's avatar
      Merge tag 'platform-drivers-x86-v4.5-2' of... · e1c10879
      Linus Torvalds authored
      Merge tag 'platform-drivers-x86-v4.5-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
      
      Pull x86 platform driver updates from Darren Hart:
       "Emergency travel prevented me from completing my final testing on this
        until today.  Nothing here that couldn't wait until RC1 fixes, but I
        thought it best to get it out sooner rather than later as it does
        contain a build warning fix.
      
        Summary:
      
        A build warning fix, MAINTAINERS cleanup, and a new DMI quirk:
      
        ideapad-laptop:
         - Add Lenovo Yoga 700 to no_hw_rfkill dmi list
      
        MAINTAINERS:
         - Combine multiple telemetry entries
      
        intel_telemetry_debugfs:
         - Fix unused warnings in telemetry debugfs"
      
      * tag 'platform-drivers-x86-v4.5-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
        ideapad-laptop: Add Lenovo Yoga 700 to no_hw_rfkill dmi list
        MAINTAINERS: Combine multiple telemetry entries
        intel_telemetry_debugfs: Fix unused warnings in telemetry debugfs
      e1c10879
    • Linus Torvalds's avatar
      Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux · 81f05fee
      Linus Torvalds authored
      Pull thermal management updates from Zhang Rui:
       "The top merge commit was re-generated yesterday because two topic
        branches were dropped from this pull request in the last minute due to
        some unaddressed comments.  All the other material has been in
        linux-next for quite a while.
      
        Specifics:
      
         - Enhance thermal core to handle unexpected device cooling states
           after fresh boot and system resume.  From Zhang Rui and Chen Yu.
      
         - Several fixes and cleanups on Rockchip and RCAR thermal drivers.
           From Caesar Wang and Kuninori Morimoto.
      
         - Add Broxton support for Intel processor thermal reporting device
           driver.  From Amy Wiles"
      
      * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
        thermal: trip_point_temp_store() calls thermal_zone_device_update()
        thermal: rcar: rcar_thermal_get_temp() return error if strange temp
        thermal: rcar: check irq possibility in rcar_thermal_irq_xxx()
        thermal: rcar: check every rcar_thermal_update_temp() return value
        thermal: rcar: move rcar_thermal_dt_ids to upside
        thermal: rockchip: Support the RK3399 SoCs in thermal driver
        thermal: rockchip: Support the RK3228 SoCs in thermal driver
        dt-bindings: rockchip-thermal: Support the RK3228/RK3399 SoCs compatible
        thermal: rockchip: fix a trivial typo
        Thermal: Enable Broxton SoC thermal reporting device
        thermal: constify pch_dev_ops structure
        Thermal: do thermal zone update after a cooling device registered
        Thermal: handle thermal zone device properly during system sleep
        Thermal: initialize thermal zone device correctly
      81f05fee
    • Linus Torvalds's avatar
      Merge tag 'for-linus-4.5-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs · c52cb431
      Linus Torvalds authored
      Pull 9p updates from Eric Van Hensbergen:
       "Sorry for the last minute pull request, there's was a change that
        didn't get pulled into for-next until two weeks ago and I wanted to
        give it some bake time.
      
        Summary:
      
        Rework and error handling fixes, primarily in the fscatch and fd
        transports"
      
      * tag 'for-linus-4.5-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
        fs/9p: use fscache mutex rather than spinlock
        9p: trans_fd, bail out if recv fcall if missing
        9p: trans_fd, read rework to use p9_parse_header
        net/9p: Add device name details on error
      c52cb431
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client · 00e3f5cc
      Linus Torvalds authored
      Pull Ceph updates from Sage Weil:
       "The two main changes are aio support in CephFS, and a series that
        fixes several issues in the authentication key timeout/renewal code.
      
        On top of that are a variety of cleanups and minor bug fixes"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
        libceph: remove outdated comment
        libceph: kill off ceph_x_ticket_handler::validity
        libceph: invalidate AUTH in addition to a service ticket
        libceph: fix authorizer invalidation, take 2
        libceph: clear messenger auth_retry flag if we fault
        libceph: fix ceph_msg_revoke()
        libceph: use list_for_each_entry_safe
        ceph: use i_size_{read,write} to get/set i_size
        ceph: re-send AIO write request when getting -EOLDSNAP error
        ceph: Asynchronous IO support
        ceph: Avoid to propagate the invalid page point
        ceph: fix double page_unlock() in page_mkwrite()
        rbd: delete an unnecessary check before rbd_dev_destroy()
        libceph: use list_next_entry instead of list_entry_next
        ceph: ceph_frag_contains_value can be boolean
        ceph: remove unused functions in ceph_frag.h
      00e3f5cc
    • Linus Torvalds's avatar
      Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 · 772950ed
      Linus Torvalds authored
      Pull SMB3 fixes from Steve French:
       "A collection of CIFS/SMB3 fixes.
      
        It includes a couple bug fixes, a few for improved debugging of
        cifs.ko and some improvements to the way cifs does key generation.
      
        I do have some additional bug fixes I expect in the next week or two
        (to address a problem found by xfstest, and some fixes for SMB3.11
        dialect, and a couple patches that just came in yesterday that I am
        reviewing)"
      
      * 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
        cifs_dbg() outputs an uninitialized buffer in cifs_readdir()
        cifs: fix race between call_async() and reconnect()
        Prepare for encryption support (first part). Add decryption and encryption key generation. Thanks to Metze for helping with this.
        cifs: Allow using O_DIRECT with cache=loose
        cifs: Make echo interval tunable
        cifs: Check uniqueid for SMB2+ and return -ESTALE if necessary
        Print IP address of unresponsive server
        cifs: Ratelimit kernel log messages
      772950ed
    • Josh Boyer's avatar
      ideapad-laptop: Add Lenovo Yoga 700 to no_hw_rfkill dmi list · 6b31de3e
      Josh Boyer authored
      Like the Yoga 900 models the Lenovo Yoga 700 does not have a
      hw rfkill switch, and trying to read the hw rfkill switch through the
      ideapad module causes it to always reported blocking breaking wifi.
      
      This commit adds the Lenovo Yoga 700 to the no_hw_rfkill dmi list, fixing
      the wifi breakage.
      
      BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1295272
      Tested-by: <dinyar.rabady+spam@gmail.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarJosh Boyer <jwboyer@fedoraproject.org>
      Signed-off-by: default avatarDarren Hart <dvhart@linux.intel.com>
      6b31de3e
    • Souvik Kumar Chakravarty's avatar
      MAINTAINERS: Combine multiple telemetry entries · f1fc3cd8
      Souvik Kumar Chakravarty authored
      This patch combines all the telemetry file entries in MAINTAINERS via
      wildcard.
      Signed-off-by: default avatarSouvik Kumar Chakravarty <souvik.k.chakravarty@intel.com>
      Signed-off-by: default avatarDarren Hart <dvhart@linux.intel.com>
      f1fc3cd8
    • Souvik Kumar Chakravarty's avatar
      intel_telemetry_debugfs: Fix unused warnings in telemetry debugfs · 7885f2f9
      Souvik Kumar Chakravarty authored
      This patch fixes compile time warnings when CONFIG_PM_SLEEP
      is undefined. In this case sleep related counters are unused.
      Signed-off-by: default avatarSouvik Kumar Chakravarty <souvik.k.chakravarty@intel.com>
      Signed-off-by: default avatarDarren Hart <dvhart@linux.intel.com>
      7885f2f9
    • Christoph Lameter's avatar
      vmstat: Remove BUG_ON from vmstat_update · 587198ba
      Christoph Lameter authored
      If we detect that there is nothing to do just set the flag and do not
      check if it was already set before.  Races really do not matter.  If the
      flag is set by any code then the shepherd will start dealing with the
      situation and reenable the vmstat workers when necessary again.
      
      Since commit 0eb77e98 ("vmstat: make vmstat_updater deferrable again
      and shut down on idle") quiet_vmstat might update cpu_stat_off and mark
      a particular cpu to be handled by vmstat_shepherd.  This might trigger a
      VM_BUG_ON in vmstat_update because the work item might have been
      sleeping during the idle period and see the cpu_stat_off updated after
      the wake up.  The VM_BUG_ON is therefore misleading and no more
      appropriate.  Moreover it doesn't really suite any protection from real
      bugs because vmstat_shepherd will simply reschedule the vmstat_work
      anytime it sees a particular cpu set or vmstat_update would do the same
      from the worker context directly.  Even when the two would race the
      result wouldn't be incorrect as the counters update is fully idempotent.
      Reported-by: default avatarSasha Levin <sasha.levin@oracle.com>
      Signed-off-by: default avatarChristoph Lameter <cl@linux.com>
      Acked-by: default avatarMichal Hocko <mhocko@suse.com>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      587198ba
    • Ralf Baechle's avatar
      07d17f09
    • Alban Bedel's avatar
      MIPS: zboot: Add support for serial debug using the PROM · dbb98314
      Alban Bedel authored
      As most platforms implement the PROM serial interface prom_putchar()
      add a simple bridge to allow re-using this code for zboot.
      Signed-off-by: default avatarAlban Bedel <albeu@free.fr>
      Cc: Alex Smith <alex.smith@imgtec.com>
      Cc: Andrew Bresticker <abrestic@chromium.org>
      Cc: Wu Zhangjin <wuzhangjin@gmail.com>
      Cc: linux-mips@linux-mips.org
      Cc: linux-kernel@vger.kernel.org
      Patchwork: https://patchwork.linux-mips.org/patch/11811/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      dbb98314
    • Alban Bedel's avatar
      MIPS: zboot: Avoid useless rebuilds · 25f66096
      Alban Bedel authored
      Add dummy.o to the targets list, and fill targets automatically from
      $(vmlinuzobjs) to avoid having to maintain two lists.
      
      When building with XZ compression copy ashldi3.c to the build
      directory to use a different object file for the kernel and zboot.
      Without this the same object file need to be build with different
      flags which cause a rebuild at every run.
      Signed-off-by: default avatarAlban Bedel <albeu@free.fr>
      Cc: linux-mips@linux-mips.org
      Cc: Alex Smith <alex.smith@imgtec.com>
      Cc: Wu Zhangjin <wuzhangjin@gmail.com>
      Cc: Andrew Bresticker <abrestic@chromium.org>
      Cc: linux-kernel@vger.kernel.org
      Patchwork: https://patchwork.linux-mips.org/patch/11810/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      25f66096
    • Florian Fainelli's avatar
      MIPS: BMIPS: Enable ARCH_WANT_OPTIONAL_GPIOLIB · a7b43812
      Florian Fainelli authored
      Allow BMIPS_GENERIC supported platforms to build GPIO controller
      drivers.
      Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
      Reviewed-by: default avatarDragan Stancevic <dragan.stancevic@gmail.com>
      Cc: cernekee@gmail.com
      Cc: jaedon.shin@gmail.com
      Cc: gregory.0xf0@gmail.com
      Cc: Florian Fainelli <f.fainelli@gmail.com>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/12019/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      a7b43812
    • Simon Arlott's avatar
      MIPS: bcm63xx: nvram: Remove unused bcm63xx_nvram_get_psi_size() function · 5bdb102b
      Simon Arlott authored
      Remove bcm63xx_nvram_get_psi_size() as it now has no users.
      Signed-off-by: default avatarSimon Arlott <simon@fire.lp0.eu>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Brian Norris <computersforpeace@gmail.com>
      Cc: Kevin Cernekee <cernekee@gmail.com>
      Cc: Florian Fainelli <f.fainelli@gmail.com>
      Cc: Jonas Gorski <jogo@openwrt.org>
      Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
      Cc: MIPS Mailing List <linux-mips@linux-mips.org>
      Cc: MTD Maling List <linux-mtd@lists.infradead.org>
      Patchwork: https://patchwork.linux-mips.org/patch/11836/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      5bdb102b