__down_read       105 include/asm-x86/rwsem.h static inline void __down_read(struct rw_semaphore *sem)
__down_read        58 include/asm-xtensa/rwsem.h static inline void __down_read(struct rw_semaphore *sem)
__down_read       128 lib/rwsem-spinlock.c void __sched __down_read(struct rw_semaphore *sem)