148 extern void __init_ldsem(struct ld_semaphore *sem, const char *name,
151 #define init_ldsem(sem)						\  argument
155 	__init_ldsem((sem), #sem, &__key);			\
159 extern int ldsem_down_read(struct ld_semaphore *sem, long timeout);
160 extern int ldsem_down_read_trylock(struct ld_semaphore *sem);
161 extern int ldsem_down_write(struct ld_semaphore *sem, long timeout);
162 extern int ldsem_down_write_trylock(struct ld_semaphore *sem);
163 extern void ldsem_up_read(struct ld_semaphore *sem);
164 extern void ldsem_up_write(struct ld_semaphore *sem);
167 extern int ldsem_down_read_nested(struct ld_semaphore *sem, int subclass,
169 extern int ldsem_down_write_nested(struct ld_semaphore *sem, int subclass,
172 # define ldsem_down_read_nested(sem, subclass, timeout)		\  argument
173 		ldsem_down_read(sem, timeout)
174 # define ldsem_down_write_nested(sem, subclass, timeout)	\  argument
175 		ldsem_down_write(sem, timeout)