diff options
Diffstat (limited to 'include/asm-s390')
| -rw-r--r-- | include/asm-s390/atomic.h | 2 | ||||
| -rw-r--r-- | include/asm-s390/mutex.h | 9 |
2 files changed, 11 insertions, 0 deletions
diff --git a/include/asm-s390/atomic.h b/include/asm-s390/atomic.h index d82aedf616fe..be6fefe223d6 100644 --- a/include/asm-s390/atomic.h +++ b/include/asm-s390/atomic.h @@ -75,6 +75,8 @@ static __inline__ void atomic_set_mask(unsigned long mask, atomic_t * v) __CS_LOOP(v, mask, "or"); } +#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) + static __inline__ int atomic_cmpxchg(atomic_t *v, int old, int new) { __asm__ __volatile__(" cs %0,%3,0(%2)\n" diff --git a/include/asm-s390/mutex.h b/include/asm-s390/mutex.h new file mode 100644 index 000000000000..458c1f7fbc18 --- /dev/null +++ b/include/asm-s390/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> |