Eric Lee / smarc-fsl-linux-kernel

12 Apr, 2019

1 commit

13 Feb, 2018

1 commit

  • 61e02392d   locking/atomic/bitops: Document and clarify ordering semantics for failed test_and_{}_bit() ... Browse Code »

    A test_and_{}_bit() operation fails if the value of the bit is such that
    the modification does not take place. For example, if test_and_set_bit()
    returns 1. In these cases, follow the behaviour of cmpxchg and allow the
    operation to be unordered. This also applies to test_and_set_bit_lock()
    if the lock is found to be be taken already.

    Signed-off-by: Will Deacon
    Acked-by: Peter Zijlstra (Intel)
    Cc: Linus Torvalds
    Cc: Paul E. McKenney
    Cc: Thomas Gleixner
    Link: http://lkml.kernel.org/r/1518528619-20049-1-git-send-email-will.deacon@arm.com
    Signed-off-by: Ingo Molnar

    Will Deacon
     

10 Aug, 2017

1 commit

  • 706eeb3e9   Documentation/locking/atomic: Add documents for new atomic_t APIs ... Browse Code »

    Since we've vastly expanded the atomic_t interface in recent years the
    existing documentation is woefully out of date and people seem to get
    confused a bit.

    Start a new document to hopefully better explain the current state of
    affairs.

    The old atomic_ops.txt also covers bitmaps and a few more details so
    this is not a full replacement and we'll therefore keep that document
    around until such a time that we've managed to write more text to cover
    its entire.

    Also please, ReST people, go away.

    Signed-off-by: Peter Zijlstra (Intel)
    Cc: Boqun Feng
    Cc: Linus Torvalds
    Cc: Paul McKenney
    Cc: Peter Zijlstra
    Cc: Randy Dunlap
    Cc: Thomas Gleixner
    Cc: Will Deacon
    Signed-off-by: Ingo Molnar

    Peter Zijlstra