diff options
Diffstat (limited to 'include/asm-ia64/atomic.h')
| -rw-r--r-- | include/asm-ia64/atomic.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/asm-ia64/atomic.h b/include/asm-ia64/atomic.h index 874a6f890e75..d3e0dfa99e1f 100644 --- a/include/asm-ia64/atomic.h +++ b/include/asm-ia64/atomic.h @@ -88,6 +88,19 @@ ia64_atomic64_sub (__s64 i, atomic64_t *v) return new; } +#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new)) +#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) + +#define atomic_add_unless(v, a, u) \ +({ \ + int c, old; \ + c = atomic_read(v); \ + while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \ + c = old; \ + c != (u); \ +}) +#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) + #define atomic_add_return(i,v) \ ({ \ int __ia64_aar_i = (i); \ @@ -180,4 +193,5 @@ atomic64_add_negative (__s64 i, atomic64_t *v) #define smp_mb__before_atomic_inc() barrier() #define smp_mb__after_atomic_inc() barrier() +#include <asm-generic/atomic.h> #endif /* _ASM_IA64_ATOMIC_H */ |