diff options
Diffstat (limited to 'include/asm-xtensa')
| -rw-r--r-- | include/asm-xtensa/atomic.h | 1 | ||||
| -rw-r--r-- | include/asm-xtensa/mutex.h | 9 |
2 files changed, 10 insertions, 0 deletions
diff --git a/include/asm-xtensa/atomic.h b/include/asm-xtensa/atomic.h index e2ce06b101a..fe105a12392 100644 --- a/include/asm-xtensa/atomic.h +++ b/include/asm-xtensa/atomic.h @@ -224,6 +224,7 @@ static inline int atomic_sub_return(int i, atomic_t * v) #define atomic_add_negative(i,v) (atomic_add_return((i),(v)) < 0) #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n))) +#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) /** * atomic_add_unless - add unless the number is a given value diff --git a/include/asm-xtensa/mutex.h b/include/asm-xtensa/mutex.h new file mode 100644 index 00000000000..458c1f7fbc1 --- /dev/null +++ b/include/asm-xtensa/mutex.h @@ -0,0 +1,9 @@ +/* + * Pull in the generic implementation for the mutex fastpath. + * + * TODO: implement optimized primitives instead, or leave the generic + * implementation in place, or pick the atomic_xchg() based generic + * implementation. (see asm-generic/mutex-xchg.h for details) + */ + +#include <asm-generic/mutex-dec.h> |