diff options
Diffstat (limited to 'include/asm-sparc64/semaphore.h')
| -rw-r--r-- | include/asm-sparc64/semaphore.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/include/asm-sparc64/semaphore.h b/include/asm-sparc64/semaphore.h index 297173a89..4a5912bb9 100644 --- a/include/asm-sparc64/semaphore.h +++ b/include/asm-sparc64/semaphore.h @@ -38,20 +38,28 @@ extern void __up(struct semaphore * sem); extern __inline__ void down(struct semaphore * sem) { - if (atomic_dec_return(&sem->count) < 0) + int result; + + result = atomic_dec_return(&sem->count); + membar("#StoreLoad | #StoreStore"); + if (result < 0) __down(sem); } extern __inline__ int down_interruptible(struct semaphore *sem) { - int ret = 0; - if (atomic_dec_return(&sem->count) < 0) + int result, ret = 0; + + result = atomic_dec_return(&sem->count); + membar("#StoreLoad | #StoreStore"); + if (result < 0) ret = __down_interruptible(sem); return ret; } extern __inline__ void up(struct semaphore * sem) { + membar("#StoreStore | #LoadStore"); if (atomic_inc_return(&sem->count) <= 0) __up(sem); } |