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| author | Ingo Molnar <mingo@elte.hu> | 2006-01-09 15:59:17 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@hera.kernel.org> | 2006-01-09 15:59:17 -0800 |
| commit | ffbf670f5cd50501a34a5187981460da2216071e (patch) | |
| tree | f2cd9eeeb59839d15feddf906310bb375474c573 /include/asm-sh/atomic.h | |
| parent | f17578decc40df8fceff82b106582e30bdfb3189 (diff) | |
| download | op-kernel-dev-ffbf670f5cd50501a34a5187981460da2216071e.zip op-kernel-dev-ffbf670f5cd50501a34a5187981460da2216071e.tar.gz | |
[PATCH] mutex subsystem, add atomic_xchg() to all arches
add atomic_xchg() to all the architectures. Needed by the new mutex code.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Diffstat (limited to 'include/asm-sh/atomic.h')
| -rw-r--r-- | include/asm-sh/atomic.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-sh/atomic.h b/include/asm-sh/atomic.h index 618d8e0..fb627de 100644 --- a/include/asm-sh/atomic.h +++ b/include/asm-sh/atomic.h @@ -101,6 +101,8 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new) return ret; } +#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) + static inline int atomic_add_unless(atomic_t *v, int a, int u) { int ret; |
