149 extern void __init_ldsem(struct ld_semaphore *sem, const char *name,
152 #define init_ldsem(sem)						\  argument
156 	__init_ldsem((sem), #sem, &__key);			\
160 extern int ldsem_down_read(struct ld_semaphore *sem, long timeout);
161 extern int ldsem_down_read_trylock(struct ld_semaphore *sem);
162 extern int ldsem_down_write(struct ld_semaphore *sem, long timeout);
163 extern int ldsem_down_write_trylock(struct ld_semaphore *sem);
164 extern void ldsem_up_read(struct ld_semaphore *sem);
165 extern void ldsem_up_write(struct ld_semaphore *sem);
168 extern int ldsem_down_read_nested(struct ld_semaphore *sem, int subclass,
170 extern int ldsem_down_write_nested(struct ld_semaphore *sem, int subclass,
173 # define ldsem_down_read_nested(sem, subclass, timeout)		\  argument
174 		ldsem_down_read(sem, timeout)
175 # define ldsem_down_write_nested(sem, subclass, timeout)	\  argument
176 		ldsem_down_write(sem, timeout)