LXR linux/kernel/locking/rwsem.h

   1#ifdef CONFIG_RWSEM_SPIN_ON_OWNER
   2static inline void rwsem_set_owner(struct rw_semaphore *sem)
   3{
   4        sem->owner = current;
   5}
   6
   7static inline void rwsem_clear_owner(struct rw_semaphore *sem)
   8{
   9        sem->owner = NULL;
  10}
  11
  12#else
  13static inline void rwsem_set_owner(struct rw_semaphore *sem)
  14{
  15}
  16
  17static inline void rwsem_clear_owner(struct rw_semaphore *sem)
  18{
  19}
  20#endif
  21