diff options
| author | Dmitry Torokhov <dtor_core@ameritech.net> | 2006-04-02 07:08:05 +0200 |
|---|---|---|
| committer | Dmitry Torokhov <dtor_core@ameritech.net> | 2006-04-02 07:08:05 +0200 |
| commit | 95d465fd750897ab32462a6702fbfe1b122cbbc0 (patch) | |
| tree | 65c38b2f11c51bb6932e44dd6c92f15b0091abfe /include/asm-s390/atomic.h | |
| parent | Input: gameport - fix memory leak (diff) | |
| parent | Merge master.kernel.org:/home/rmk/linux-2.6-serial (diff) | |
| download | linux-95d465fd750897ab32462a6702fbfe1b122cbbc0.tar.xz linux-95d465fd750897ab32462a6702fbfe1b122cbbc0.zip | |
Manual merge with Linus.
Conflicts:
arch/powerpc/kernel/setup-common.c
drivers/input/keyboard/hil_kbd.c
drivers/input/mouse/hil_ptr.c
Diffstat (limited to 'include/asm-s390/atomic.h')
| -rw-r--r-- | include/asm-s390/atomic.h | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/include/asm-s390/atomic.h b/include/asm-s390/atomic.h index be6fefe223d6..de1d9926aa60 100644 --- a/include/asm-s390/atomic.h +++ b/include/asm-s390/atomic.h @@ -89,10 +89,15 @@ static __inline__ int atomic_cmpxchg(atomic_t *v, int old, int new) 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) + for (;;) { + if (unlikely(c == u)) + break; + old = atomic_cmpxchg(v, c, c + a); + if (likely(old == c)) + break; c = old; + } return c != u; } @@ -167,10 +172,15 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long long a, long long u) { long long c, old; - c = atomic64_read(v); - while (c != u && (old = atomic64_cmpxchg(v, c, c + a)) != c) + for (;;) { + if (unlikely(c == u)) + break; + old = atomic64_cmpxchg(v, c, c + a); + if (likely(old == c)) + break; c = old; + } return c != u; } |