73 static inline int rwsem_is_locked(struct rw_semaphore *sem)  in rwsem_is_locked()  argument
75 	return atomic_long_read(&sem->count) != RWSEM_UNLOCKED_VALUE;  in rwsem_is_locked()
78 static inline void rwsem_assert_held_nolockdep(const struct rw_semaphore *sem)  in rwsem_assert_held_nolockdep()  argument
80 	WARN_ON(atomic_long_read(&sem->count) == RWSEM_UNLOCKED_VALUE);  in rwsem_assert_held_nolockdep()
83 static inline void rwsem_assert_held_write_nolockdep(const struct rw_semaphore *sem)  in rwsem_assert_held_write_nolockdep()  argument
85 	WARN_ON(!(atomic_long_read(&sem->count) & RWSEM_WRITER_LOCKED));  in rwsem_assert_held_write_nolockdep()
114 extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
117 #define init_rwsem(sem)						\  argument
121 	__init_rwsem((sem), #sem, &__key);			\
130 static inline int rwsem_is_contended(struct rw_semaphore *sem)  in rwsem_is_contended()  argument
132 	return !list_empty(&sem->wait_list);  in rwsem_is_contended()
158 #define init_rwsem(sem)						\  argument
162 	__init_rwsem((sem), #sem, &__key);			\
165 static __always_inline int rwsem_is_locked(const struct rw_semaphore *sem)  in rwsem_is_locked()  argument
167 	return rw_base_is_locked(&sem->rwbase);  in rwsem_is_locked()
170 static __always_inline void rwsem_assert_held_nolockdep(const struct rw_semaphore *sem)  in rwsem_assert_held_nolockdep()  argument
172 	WARN_ON(!rwsem_is_locked(sem));  in rwsem_assert_held_nolockdep()
175 static __always_inline void rwsem_assert_held_write_nolockdep(const struct rw_semaphore *sem)  in rwsem_assert_held_write_nolockdep()  argument
177 	WARN_ON(!rw_base_is_write_locked(&sem->rwbase));  in rwsem_assert_held_write_nolockdep()
180 static __always_inline int rwsem_is_contended(struct rw_semaphore *sem)  in rwsem_is_contended()  argument
182 	return rw_base_is_contended(&sem->rwbase);  in rwsem_is_contended()
192 static inline void rwsem_assert_held(const struct rw_semaphore *sem)  in rwsem_assert_held()  argument
195 		lockdep_assert_held(sem);  in rwsem_assert_held()
197 		rwsem_assert_held_nolockdep(sem);  in rwsem_assert_held()
200 static inline void rwsem_assert_held_write(const struct rw_semaphore *sem)  in rwsem_assert_held_write()  argument
203 		lockdep_assert_held_write(sem);  in rwsem_assert_held_write()
205 		rwsem_assert_held_write_nolockdep(sem);  in rwsem_assert_held_write()
211 extern void down_read(struct rw_semaphore *sem);
212 extern int __must_check down_read_interruptible(struct rw_semaphore *sem);
213 extern int __must_check down_read_killable(struct rw_semaphore *sem);
218 extern int down_read_trylock(struct rw_semaphore *sem);
223 extern void down_write(struct rw_semaphore *sem);
224 extern int __must_check down_write_killable(struct rw_semaphore *sem);
229 extern int down_write_trylock(struct rw_semaphore *sem);
234 extern void up_read(struct rw_semaphore *sem);
239 extern void up_write(struct rw_semaphore *sem);
251 extern void downgrade_write(struct rw_semaphore *sem);
267 extern void down_read_nested(struct rw_semaphore *sem, int subclass);
268 extern int __must_check down_read_killable_nested(struct rw_semaphore *sem, int subclass);
269 extern void down_write_nested(struct rw_semaphore *sem, int subclass);
270 extern int down_write_killable_nested(struct rw_semaphore *sem, int subclass);
271 extern void _down_write_nest_lock(struct rw_semaphore *sem, struct lockdep_map *nest_lock);
273 # define down_write_nest_lock(sem, nest_lock)			\  argument
276 	_down_write_nest_lock(sem, &(nest_lock)->dep_map);	\
285 extern void down_read_non_owner(struct rw_semaphore *sem);
286 extern void up_read_non_owner(struct rw_semaphore *sem);
288 # define down_read_nested(sem, subclass)		down_read(sem)  argument
289 # define down_read_killable_nested(sem, subclass)	down_read_killable(sem)  argument
290 # define down_write_nest_lock(sem, nest_lock)	down_write(sem)  argument
291 # define down_write_nested(sem, subclass)	down_write(sem)  argument
292 # define down_write_killable_nested(sem, subclass)	down_write_killable(sem)  argument
293 # define down_read_non_owner(sem)		down_read(sem)  argument
294 # define up_read_non_owner(sem)			up_read(sem)  argument