145 extern void __init_ldsem(struct ld_semaphore *sem, const char *name,
148 #define init_ldsem(sem)						\  argument
152 	__init_ldsem((sem), #sem, &__key);			\
156 extern int ldsem_down_read(struct ld_semaphore *sem, long timeout);
157 extern int ldsem_down_read_trylock(struct ld_semaphore *sem);
158 extern int ldsem_down_write(struct ld_semaphore *sem, long timeout);
159 extern int ldsem_down_write_trylock(struct ld_semaphore *sem);
160 extern void ldsem_up_read(struct ld_semaphore *sem);
161 extern void ldsem_up_write(struct ld_semaphore *sem);
164 extern int ldsem_down_read_nested(struct ld_semaphore *sem, int subclass,
166 extern int ldsem_down_write_nested(struct ld_semaphore *sem, int subclass,
169 # define ldsem_down_read_nested(sem, subclass, timeout)		\  argument
170 		ldsem_down_read(sem, timeout)
171 # define ldsem_down_write_nested(sem, subclass, timeout)	\  argument
172 		ldsem_down_write(sem, timeout)