diff options
| author | Arun Sharma <asharma@fb.com> | 2011-07-27 03:09:07 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-27 03:49:47 +0400 |
| commit | f24219b4e90cf70ec4a211b17fbabc725a0ddf3c (patch) | |
| tree | c1c753bd425d61a5094995d9835b23b46383d9b2 /arch/arm | |
| parent | 60063497a95e716c9a689af3be2687d261f115b4 (diff) | |
| download | linux-f24219b4e90cf70ec4a211b17fbabc725a0ddf3c.tar.xz | |
atomic: move atomic_add_unless to generic code
This is in preparation for more generic atomic primitives based on
__atomic_add_unless.
Signed-off-by: Arun Sharma <asharma@fb.com>
Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/include/asm/atomic.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h index 4d501f1bdc9d..3757e91c5281 100644 --- a/arch/arm/include/asm/atomic.h +++ b/arch/arm/include/asm/atomic.h @@ -208,14 +208,14 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) -static inline int atomic_add_unless(atomic_t *v, int a, int u) +static inline int __atomic_add_unless(atomic_t *v, int a, int u) { int c, old; c = atomic_read(v); while (c != u && (old = atomic_cmpxchg((v), c, c + a)) != c) c = old; - return c != u; + return c; } #define atomic_inc(v) atomic_add(1, v) |