diff options
Diffstat (limited to 'include/asm-sparc64/atomic.h')
| -rw-r--r-- | include/asm-sparc64/atomic.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/asm-sparc64/atomic.h b/include/asm-sparc64/atomic.h index e175afcf2cde..25256bdc8aae 100644 --- a/include/asm-sparc64/atomic.h +++ b/include/asm-sparc64/atomic.h @@ -54,6 +54,7 @@ extern int atomic64_sub_ret(int, atomic64_t *); * other cases. */ #define atomic_inc_and_test(v) (atomic_inc_return(v) == 0) +#define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0) #define atomic_sub_and_test(i, v) (atomic_sub_ret(i, v) == 0) #define atomic64_sub_and_test(i, v) (atomic64_sub_ret(i, v) == 0) @@ -70,6 +71,19 @@ extern int atomic64_sub_ret(int, atomic64_t *); #define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0) #define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0) +#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n))) +#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) + /* Atomic operations are already serializing */ #ifdef CONFIG_SMP #define smp_mb__before_atomic_dec() membar_storeload_loadload(); @@ -83,4 +97,5 @@ extern int atomic64_sub_ret(int, atomic64_t *); #define smp_mb__after_atomic_inc() barrier() #endif +#include <asm-generic/atomic.h> #endif /* !(__ARCH_SPARC64_ATOMIC__) */ |