Eric Lee / smarc-fsl-linux-kernel

26 Jun, 2013

1 commit

  • 040a0a371   mutex: Add support for wound/wait style locks ... Browse Code ยป

    Wound/wait mutexes are used when other multiple lock
    acquisitions of a similar type can be done in an arbitrary
    order. The deadlock handling used here is called wait/wound in
    the RDBMS literature: The older tasks waits until it can acquire
    the contended lock. The younger tasks needs to back off and drop
    all the locks it is currently holding, i.e. the younger task is
    wounded.

    For full documentation please read Documentation/ww-mutex-design.txt.

    References: https://lwn.net/Articles/548909/
    Signed-off-by: Maarten Lankhorst
    Acked-by: Daniel Vetter
    Acked-by: Rob Clark
    Acked-by: Peter Zijlstra
    Cc: dri-devel@lists.freedesktop.org
    Cc: linaro-mm-sig@lists.linaro.org
    Cc: rostedt@goodmis.org
    Cc: daniel@ffwll.ch
    Cc: Linus Torvalds
    Cc: Andrew Morton
    Cc: Thomas Gleixner
    Link: http://lkml.kernel.org/r/51C8038C.9000106@canonical.com
    Signed-off-by: Ingo Molnar

    Maarten Lankhorst