76 static inline int rwsem_is_locked(struct rw_semaphore *sem)  in rwsem_is_locked()  argument
78 	return atomic_long_read(&sem->count) != RWSEM_UNLOCKED_VALUE;  in rwsem_is_locked()
81 static inline void rwsem_assert_held_nolockdep(const struct rw_semaphore *sem)  in rwsem_assert_held_nolockdep()  argument
83 	WARN_ON(atomic_long_read(&sem->count) == RWSEM_UNLOCKED_VALUE);  in rwsem_assert_held_nolockdep()
86 static inline void rwsem_assert_held_write_nolockdep(const struct rw_semaphore *sem)  in rwsem_assert_held_write_nolockdep()  argument
88 	WARN_ON(!(atomic_long_read(&sem->count) & RWSEM_WRITER_LOCKED));  in rwsem_assert_held_write_nolockdep()
117 extern void __init_rwsem(struct rw_semaphore *sem, const char *name,
120 #define init_rwsem(sem)						\  argument
124 	__init_rwsem((sem), #sem, &__key);			\
133 static inline int rwsem_is_contended(struct rw_semaphore *sem)  in rwsem_is_contended()  argument
135 	return !list_empty(&sem->wait_list);  in rwsem_is_contended()
161 #define init_rwsem(sem)						\  argument
165 	__init_rwsem((sem), #sem, &__key);			\
168 static __always_inline int rwsem_is_locked(const struct rw_semaphore *sem)  in rwsem_is_locked()  argument
170 	return rw_base_is_locked(&sem->rwbase);  in rwsem_is_locked()
173 static __always_inline void rwsem_assert_held_nolockdep(const struct rw_semaphore *sem)  in rwsem_assert_held_nolockdep()  argument
175 	WARN_ON(!rwsem_is_locked(sem));  in rwsem_assert_held_nolockdep()
178 static __always_inline void rwsem_assert_held_write_nolockdep(const struct rw_semaphore *sem)  in rwsem_assert_held_write_nolockdep()  argument
180 	WARN_ON(!rw_base_is_write_locked(&sem->rwbase));  in rwsem_assert_held_write_nolockdep()
183 static __always_inline int rwsem_is_contended(struct rw_semaphore *sem)  in rwsem_is_contended()  argument
185 	return rw_base_is_contended(&sem->rwbase);  in rwsem_is_contended()
195 static inline void rwsem_assert_held(const struct rw_semaphore *sem)  in rwsem_assert_held()  argument
198 		lockdep_assert_held(sem);  in rwsem_assert_held()
200 		rwsem_assert_held_nolockdep(sem);  in rwsem_assert_held()
203 static inline void rwsem_assert_held_write(const struct rw_semaphore *sem)  in rwsem_assert_held_write()  argument
206 		lockdep_assert_held_write(sem);  in rwsem_assert_held_write()
208 		rwsem_assert_held_write_nolockdep(sem);  in rwsem_assert_held_write()
214 extern void down_read(struct rw_semaphore *sem);
215 extern int __must_check down_read_interruptible(struct rw_semaphore *sem);
216 extern int __must_check down_read_killable(struct rw_semaphore *sem);
221 extern int down_read_trylock(struct rw_semaphore *sem);
226 extern void down_write(struct rw_semaphore *sem);
227 extern int __must_check down_write_killable(struct rw_semaphore *sem);
232 extern int down_write_trylock(struct rw_semaphore *sem);
237 extern void up_read(struct rw_semaphore *sem);
242 extern void up_write(struct rw_semaphore *sem);
254 extern void downgrade_write(struct rw_semaphore *sem);
270 extern void down_read_nested(struct rw_semaphore *sem, int subclass);
271 extern int __must_check down_read_killable_nested(struct rw_semaphore *sem, int subclass);
272 extern void down_write_nested(struct rw_semaphore *sem, int subclass);
273 extern int down_write_killable_nested(struct rw_semaphore *sem, int subclass);
274 extern void _down_write_nest_lock(struct rw_semaphore *sem, struct lockdep_map *nest_lock);
276 # define down_write_nest_lock(sem, nest_lock)			\  argument
279 	_down_write_nest_lock(sem, &(nest_lock)->dep_map);	\
288 extern void down_read_non_owner(struct rw_semaphore *sem);
289 extern void up_read_non_owner(struct rw_semaphore *sem);
291 # define down_read_nested(sem, subclass)		down_read(sem)  argument
292 # define down_read_killable_nested(sem, subclass)	down_read_killable(sem)  argument
293 # define down_write_nest_lock(sem, nest_lock)	down_write(sem)  argument
294 # define down_write_nested(sem, subclass)	down_write(sem)  argument
295 # define down_write_killable_nested(sem, subclass)	down_write_killable(sem)  argument
296 # define down_read_non_owner(sem)		down_read(sem)  argument
297 # define up_read_non_owner(sem)			up_read(sem)  argument