87 static inline int rwsem_is_locked(struct rw_semaphore *sem)  in rwsem_is_locked()  argument
89 	return atomic_long_read(&sem->count) != 0;  in rwsem_is_locked()
121 extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
124 #define init_rwsem(sem)						\  argument
128 	__init_rwsem((sem), #sem, &__key);			\
137 static inline int rwsem_is_contended(struct rw_semaphore *sem)  in rwsem_is_contended()  argument
139 	return !list_empty(&sem->wait_list);  in rwsem_is_contended()
165 #define init_rwsem(sem)						\  argument
169 	__init_rwsem((sem), #sem, &__key);			\
172 static __always_inline int rwsem_is_locked(struct rw_semaphore *sem)  in rwsem_is_locked()  argument
174 	return rw_base_is_locked(&sem->rwbase);  in rwsem_is_locked()
177 static __always_inline int rwsem_is_contended(struct rw_semaphore *sem)  in rwsem_is_contended()  argument
179 	return rw_base_is_contended(&sem->rwbase);  in rwsem_is_contended()
192 extern void down_read(struct rw_semaphore *sem);
193 extern int __must_check down_read_interruptible(struct rw_semaphore *sem);
194 extern int __must_check down_read_killable(struct rw_semaphore *sem);
199 extern int down_read_trylock(struct rw_semaphore *sem);
204 extern void down_write(struct rw_semaphore *sem);
205 extern int __must_check down_write_killable(struct rw_semaphore *sem);
210 extern int down_write_trylock(struct rw_semaphore *sem);
215 extern void up_read(struct rw_semaphore *sem);
220 extern void up_write(struct rw_semaphore *sem);
225 extern void downgrade_write(struct rw_semaphore *sem);
241 extern void down_read_nested(struct rw_semaphore *sem, int subclass);
242 extern int __must_check down_read_killable_nested(struct rw_semaphore *sem, int subclass);
243 extern void down_write_nested(struct rw_semaphore *sem, int subclass);
244 extern int down_write_killable_nested(struct rw_semaphore *sem, int subclass);
245 extern void _down_write_nest_lock(struct rw_semaphore *sem, struct lockdep_map *nest_lock);
247 # define down_write_nest_lock(sem, nest_lock)			\  argument
250 	_down_write_nest_lock(sem, &(nest_lock)->dep_map);	\
259 extern void down_read_non_owner(struct rw_semaphore *sem);
260 extern void up_read_non_owner(struct rw_semaphore *sem);
262 # define down_read_nested(sem, subclass)		down_read(sem)  argument
263 # define down_read_killable_nested(sem, subclass)	down_read_killable(sem)  argument
264 # define down_write_nest_lock(sem, nest_lock)	down_write(sem)  argument
265 # define down_write_nested(sem, subclass)	down_write(sem)  argument
266 # define down_write_killable_nested(sem, subclass)	down_write_killable(sem)  argument
267 # define down_read_non_owner(sem)		down_read(sem)  argument
268 # define up_read_non_owner(sem)			up_read(sem)  argument