30 static inline void __down_read(struct rw_semaphore *sem)  in __down_read()  argument
32 	if (atomic_add_return(1,(atomic_t *)(&sem->count)) > 0)  in __down_read()
35 		rwsem_down_read_failed(sem);  in __down_read()
38 static inline int __down_read_trylock(struct rw_semaphore *sem)  in __down_read_trylock()  argument
42 	while ((tmp = sem->count) >= 0) {  in __down_read_trylock()
43 		if (tmp == cmpxchg(&sem->count, tmp,  in __down_read_trylock()
55 static inline void __down_write(struct rw_semaphore *sem)  in __down_write()  argument
60 				(atomic_t *)(&sem->count));  in __down_write()
64 		rwsem_down_write_failed(sem);  in __down_write()
67 static inline int __down_write_trylock(struct rw_semaphore *sem)  in __down_write_trylock()  argument
71 	tmp = cmpxchg(&sem->count, RWSEM_UNLOCKED_VALUE,  in __down_write_trylock()
80 static inline void __up_read(struct rw_semaphore *sem)  in __up_read()  argument
85 	tmp = atomic_sub_return(1,(atomic_t *)(&sem->count));  in __up_read()
87 		rwsem_wake(sem);  in __up_read()
93 static inline void __up_write(struct rw_semaphore *sem)  in __up_write()  argument
97 			      (atomic_t *)(&sem->count)) < 0)  in __up_write()
98 		rwsem_wake(sem);  in __up_write()
104 static inline void rwsem_atomic_add(int delta, struct rw_semaphore *sem)  in rwsem_atomic_add()  argument
106 	atomic_add(delta, (atomic_t *)(&sem->count));  in rwsem_atomic_add()
112 static inline void __downgrade_write(struct rw_semaphore *sem)  in __downgrade_write()  argument
117 	tmp = atomic_add_return(-RWSEM_WAITING_BIAS, (atomic_t *)(&sem->count));  in __downgrade_write()
119 		rwsem_downgrade_wake(sem);  in __downgrade_write()
125 static inline int rwsem_atomic_update(int delta, struct rw_semaphore *sem)  in rwsem_atomic_update()  argument
128 	return atomic_add_return(delta, (atomic_t *)(&sem->count));  in rwsem_atomic_update()