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| author | Arjan van de Ven <arjan@infradead.org> | 2006-01-09 15:59:19 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@hera.kernel.org> | 2006-01-09 15:59:19 -0800 |
| commit | 2acbb8c657af86b2fa5b185f1d7048385e310585 (patch) | |
| tree | bc106bb2665a9c6267e6cc4eec9085deedd9e636 /include/asm-s390 | |
| parent | 823d0f4f67252115212eb86caba14d5795bbe643 (diff) | |
| download | op-kernel-dev-2acbb8c657af86b2fa5b185f1d7048385e310585.zip op-kernel-dev-2acbb8c657af86b2fa5b185f1d7048385e310585.tar.gz | |
[PATCH] mutex subsystem, add default include/asm-*/mutex.h files
add the per-arch mutex.h files for the remaining architectures.
We default to asm-generic/mutex-dec.h, because that performs
quite well on most arches. Arches that do not have atomic
decrement/increment instructions should switch to mutex-xchg.h
instead. Arches can also provide their own implementation for
the mutex fastpath primitives.
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-s390')
| -rw-r--r-- | include/asm-s390/mutex.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-s390/mutex.h b/include/asm-s390/mutex.h new file mode 100644 index 0000000..458c1f7 --- /dev/null +++ b/include/asm-s390/mutex.h @@ -0,0 +1,9 @@ +/* + * Pull in the generic implementation for the mutex fastpath. + * + * TODO: implement optimized primitives instead, or leave the generic + * implementation in place, or pick the atomic_xchg() based generic + * implementation. (see asm-generic/mutex-xchg.h for details) + */ + +#include <asm-generic/mutex-dec.h> |
