diff options
| author | Arjan van de Ven | 2006-01-10 00:59:19 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2006-01-10 00:59:19 +0100 |
| commit | 2acbb8c657af86b2fa5b185f1d7048385e310585 (patch) | |
| tree | bc106bb2665a9c6267e6cc4eec9085deedd9e636 /include/asm-xtensa | |
| parent | [PATCH] mutex subsystem, add include/asm-arm/mutex.h (diff) | |
| download | kernel-qcow2-linux-2acbb8c657af86b2fa5b185f1d7048385e310585.tar.gz kernel-qcow2-linux-2acbb8c657af86b2fa5b185f1d7048385e310585.tar.xz kernel-qcow2-linux-2acbb8c657af86b2fa5b185f1d7048385e310585.zip | |
[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-xtensa')
| -rw-r--r-- | include/asm-xtensa/mutex.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-xtensa/mutex.h b/include/asm-xtensa/mutex.h new file mode 100644 index 000000000000..458c1f7fbc18 --- /dev/null +++ b/include/asm-xtensa/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> |