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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-xtensa/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-xtensa/atomic.h')
| -rw-r--r-- | include/asm-xtensa/atomic.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-xtensa/atomic.h b/include/asm-xtensa/atomic.h index e2ce06b..fe105a1 100644 --- a/include/asm-xtensa/atomic.h +++ b/include/asm-xtensa/atomic.h @@ -224,6 +224,7 @@ static inline int atomic_sub_return(int i, atomic_t * v) #define atomic_add_negative(i,v) (atomic_add_return((i),(v)) < 0) #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n))) +#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) /** * atomic_add_unless - add unless the number is a given value |
