diff options
Diffstat (limited to 'include/linux/atomic.h')
| -rw-r--r-- | include/linux/atomic.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/atomic.h b/include/linux/atomic.h index f1464cf3..2c983cd4 100644 --- a/include/linux/atomic.h +++ b/include/linux/atomic.h @@ -324,6 +324,12 @@ static inline s64 atomic64_cmpxchg_acquire(atomic64_t *v, s64 old, s64 new) return atomic64_cmpxchg(v, old, new); } +static inline s64 atomic64_sub_return_release(s64 i, atomic64_t *v) +{ + smp_mb__before_atomic(); + return atomic64_sub_return(i, v); +} + #endif #endif /* __TOOLS_LINUX_ATOMIC_H */ |