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-sparc/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-sparc/atomic.h')
| -rw-r--r-- | include/asm-sparc/atomic.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-sparc/atomic.h b/include/asm-sparc/atomic.h index 37f6ab601c3d..52bdd1a895fa 100644 --- a/include/asm-sparc/atomic.h +++ b/include/asm-sparc/atomic.h | |||
| @@ -19,6 +19,7 @@ typedef struct { volatile int counter; } atomic_t; | |||
| 19 | #define ATOMIC_INIT(i) { (i) } | 19 | #define ATOMIC_INIT(i) { (i) } |
| 20 | 20 | ||
| 21 | extern int __atomic_add_return(int, atomic_t *); | 21 | extern int __atomic_add_return(int, atomic_t *); |
| 22 | extern int atomic_cmpxchg(atomic_t *, int, int); | ||
| 22 | extern void atomic_set(atomic_t *, int); | 23 | extern void atomic_set(atomic_t *, int); |
| 23 | 24 | ||
| 24 | #define atomic_read(v) ((v)->counter) | 25 | #define atomic_read(v) ((v)->counter) |