69 static inline int rwsem_is_locked(struct rw_semaphore *sem)  in rwsem_is_locked()  argument
71 	return atomic_long_read(&sem->count) != 0;  in rwsem_is_locked()
103 extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
106 #define init_rwsem(sem)						\  argument
110 	__init_rwsem((sem), #sem, &__key);			\
119 static inline int rwsem_is_contended(struct rw_semaphore *sem)  in rwsem_is_contended()  argument
121 	return !list_empty(&sem->wait_list);  in rwsem_is_contended()
147 #define init_rwsem(sem)						\  argument
151 	__init_rwsem((sem), #sem, &__key);			\
154 static __always_inline int rwsem_is_locked(struct rw_semaphore *sem)  in rwsem_is_locked()  argument
156 	return rw_base_is_locked(&sem->rwbase);  in rwsem_is_locked()
159 static __always_inline int rwsem_is_contended(struct rw_semaphore *sem)  in rwsem_is_contended()  argument
161 	return rw_base_is_contended(&sem->rwbase);  in rwsem_is_contended()
174 extern void down_read(struct rw_semaphore *sem);
175 extern int __must_check down_read_interruptible(struct rw_semaphore *sem);
176 extern int __must_check down_read_killable(struct rw_semaphore *sem);
181 extern int down_read_trylock(struct rw_semaphore *sem);
186 extern void down_write(struct rw_semaphore *sem);
187 extern int __must_check down_write_killable(struct rw_semaphore *sem);
192 extern int down_write_trylock(struct rw_semaphore *sem);
197 extern void up_read(struct rw_semaphore *sem);
202 extern void up_write(struct rw_semaphore *sem);
207 extern void downgrade_write(struct rw_semaphore *sem);
223 extern void down_read_nested(struct rw_semaphore *sem, int subclass);
224 extern int __must_check down_read_killable_nested(struct rw_semaphore *sem, int subclass);
225 extern void down_write_nested(struct rw_semaphore *sem, int subclass);
226 extern int down_write_killable_nested(struct rw_semaphore *sem, int subclass);
227 extern void _down_write_nest_lock(struct rw_semaphore *sem, struct lockdep_map *nest_lock);
229 # define down_write_nest_lock(sem, nest_lock)			\  argument
232 	_down_write_nest_lock(sem, &(nest_lock)->dep_map);	\
241 extern void down_read_non_owner(struct rw_semaphore *sem);
242 extern void up_read_non_owner(struct rw_semaphore *sem);
244 # define down_read_nested(sem, subclass)		down_read(sem)  argument
245 # define down_read_killable_nested(sem, subclass)	down_read_killable(sem)  argument
246 # define down_write_nest_lock(sem, nest_lock)	down_write(sem)  argument
247 # define down_write_nested(sem, subclass)	down_write(sem)  argument
248 # define down_write_killable_nested(sem, subclass)	down_write_killable(sem)  argument
249 # define down_read_non_owner(sem)		down_read(sem)  argument
250 # define up_read_non_owner(sem)			up_read(sem)  argument