diff options
| author | Nick Piggin <nickpiggin@yahoo.com.au> | 2005-11-13 19:07:24 -0500 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-13 21:14:16 -0500 |
| commit | 4a6dae6d382e9edf3ff440b819e554ed706359bc (patch) | |
| tree | 2945a5095973e2ecf05b503d6deb859083045b8e /include/asm-parisc/atomic.h | |
| parent | 53e86b91b7ae66d4c2757195cbd42e00d9199cf2 (diff) | |
[PATCH] atomic: cmpxchg
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>
Diffstat (limited to 'include/asm-parisc/atomic.h')
| -rw-r--r-- | include/asm-parisc/atomic.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-parisc/atomic.h b/include/asm-parisc/atomic.h index 048a2c7fd0c0..52c9a45b5f87 100644 --- a/include/asm-parisc/atomic.h +++ b/include/asm-parisc/atomic.h | |||
| @@ -164,6 +164,7 @@ static __inline__ int atomic_read(const atomic_t *v) | |||
| 164 | } | 164 | } |
| 165 | 165 | ||
| 166 | /* exported interface */ | 166 | /* exported interface */ |
| 167 | #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n))) | ||
| 167 | 168 | ||
| 168 | #define atomic_add(i,v) ((void)(__atomic_add_return( ((int)i),(v)))) | 169 | #define atomic_add(i,v) ((void)(__atomic_add_return( ((int)i),(v)))) |
| 169 | #define atomic_sub(i,v) ((void)(__atomic_add_return(-((int)i),(v)))) | 170 | #define atomic_sub(i,v) ((void)(__atomic_add_return(-((int)i),(v)))) |