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[PATCH] atomic: cmpxchg

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Introduce an atomic_cmpxchg operation.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Nick Piggin
2005-11-13 16:07:24 -08:00
committed by Linus Torvalds
parent 53e86b91b7
commit 4a6dae6d38
23 changed files with 169 additions and 5 deletions
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include/asm-frv/atomic.h
+2
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@@ -414,4 +414,6 @@ extern uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new);
#endif
#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
#endif /* _ASM_ATOMIC_H */