diff options
| -rw-r--r-- | include/asm-i386/atomic.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/asm-i386/atomic.h b/include/asm-i386/atomic.h index b9fd03cef51..0baa2f89463 100644 --- a/include/asm-i386/atomic.h +++ b/include/asm-i386/atomic.h @@ -52,7 +52,7 @@ static __inline__ void atomic_add(int i, atomic_t *v) } /** - * atomic_sub - subtract the atomic variable + * atomic_sub - subtract integer from atomic variable * @i: integer value to subtract * @v: pointer of type atomic_t * @@ -171,7 +171,7 @@ static __inline__ int atomic_add_negative(int i, atomic_t *v) } /** - * atomic_add_return - add and return + * atomic_add_return - add integer and return * @v: pointer of type atomic_t * @i: integer value to add * @@ -203,6 +203,13 @@ no_xadd: /* Legacy 386 processor */ #endif } +/** + * atomic_sub_return - subtract integer and return + * @v: pointer of type atomic_t + * @i: integer value to subtract + * + * Atomically subtracts @i from @v and returns @v - @i + */ static __inline__ int atomic_sub_return(int i, atomic_t *v) { return atomic_add_return(-i,v); |