linux-kernel - [PATCH -v4 0/8] locking/mutex: Rewrite basic mutex

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Date:   Fri, 07 Oct 2016 16:52:43 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Waiman Long <waiman.long@....com>,
        Jason Low <jason.low2@....com>,
        Ding Tianhong <dingtianhong@...wei.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Will Deacon <Will.Deacon@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Imre Deak <imre.deak@...el.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Davidlohr Bueso <dave@...olabs.net>,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Terry Rudd <terry.rudd@....com>,
        "Paul E. McKenney" <paulmck@...ibm.com>,
        Jason Low <jason.low2@...com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     Chris Wilson <chris@...is-wilson.co.uk>,
        Daniel Vetter <daniel.vetter@...ll.ch>
Subject: [PATCH -v4 0/8] locking/mutex: Rewrite basic mutex


Hi all,

Since you all should not be sending patches during the merge window, I figured
I should to keep you all occupied with something.

Please review, test and otherwise try to break these here patches.

I would like to get these patches into -tip (and -next) once the merge window
closes, so please spend these quiet days staring at this stuff.

Small changes only, mostly the handoff logic as suggested by Waiman last time.


---
 arch/alpha/include/asm/mutex.h           |   9 -
 arch/arc/include/asm/mutex.h             |  18 -
 arch/arm/include/asm/mutex.h             |  21 --
 arch/arm64/include/asm/Kbuild            |   1 -
 arch/avr32/include/asm/mutex.h           |   9 -
 arch/blackfin/include/asm/Kbuild         |   1 -
 arch/c6x/include/asm/mutex.h             |   6 -
 arch/cris/include/asm/mutex.h            |   9 -
 arch/frv/include/asm/mutex.h             |   9 -
 arch/h8300/include/asm/mutex.h           |   9 -
 arch/hexagon/include/asm/mutex.h         |   8 -
 arch/ia64/include/asm/mutex.h            |  90 -----
 arch/m32r/include/asm/mutex.h            |   9 -
 arch/m68k/include/asm/Kbuild             |   1 -
 arch/metag/include/asm/Kbuild            |   1 -
 arch/microblaze/include/asm/mutex.h      |   1 -
 arch/mips/include/asm/Kbuild             |   1 -
 arch/mn10300/include/asm/mutex.h         |  16 -
 arch/nios2/include/asm/mutex.h           |   1 -
 arch/openrisc/include/asm/mutex.h        |  27 --
 arch/parisc/include/asm/Kbuild           |   1 -
 arch/powerpc/include/asm/mutex.h         | 132 -------
 arch/s390/include/asm/mutex.h            |   9 -
 arch/score/include/asm/mutex.h           |   6 -
 arch/sh/include/asm/mutex-llsc.h         | 109 ------
 arch/sh/include/asm/mutex.h              |  12 -
 arch/sparc/include/asm/Kbuild            |   1 -
 arch/tile/include/asm/Kbuild             |   1 -
 arch/um/include/asm/Kbuild               |   1 -
 arch/unicore32/include/asm/mutex.h       |  20 --
 arch/x86/include/asm/mutex.h             |   5 -
 arch/x86/include/asm/mutex_32.h          | 110 ------
 arch/x86/include/asm/mutex_64.h          | 127 -------
 arch/xtensa/include/asm/mutex.h          |   9 -
 drivers/gpu/drm/i915/i915_gem_shrinker.c |  26 +-
 drivers/gpu/drm/msm/msm_gem_shrinker.c   |  23 +-
 include/asm-generic/mutex-dec.h          |  88 -----
 include/asm-generic/mutex-null.h         |  19 --
 include/asm-generic/mutex-xchg.h         | 120 -------
 include/asm-generic/mutex.h              |   9 -
 include/linux/mutex-debug.h              |  24 --
 include/linux/mutex.h                    |  46 ++-
 kernel/Kconfig.locks                     |   2 +-
 kernel/locking/mutex-debug.c             |  13 -
 kernel/locking/mutex-debug.h             |  10 -
 kernel/locking/mutex.c                   | 569 ++++++++++++++++++-------------
 kernel/locking/mutex.h                   |  26 --
 kernel/sched/core.c                      |   2 +-
 48 files changed, 364 insertions(+), 1403 deletions(-)