10 Jan, 2006

1 commit

• 620a6fd18   [PATCH] mutex subsystem, add asm-generic/mutex-[dec|xchg|null].h implementations ... Browse Code »

  Add three (generic) mutex fastpath implementations.

  The mutex-xchg.h implementation is atomic_xchg() based, and should
  work fine on every architecture.

  The mutex-dec.h implementation is atomic_dec_return() based - this
  one too should work on every architecture, but might not perform the
  most optimally on architectures that have no atomic-dec/inc instructions.

  The mutex-null.h implementation forces all calls into the slowpath. This
  is used for mutex debugging, but it can also be used on platforms that do
  not want (or need) a fastpath at all.

  Signed-off-by: Ingo Molnar
  Signed-off-by: Arjan van de Ven

  Ingo Molnar

  2006-01-10 07:59:17 +0800