_read_unlock_irqrestore   78 include/linux/spinlock_api_up.h #define _read_unlock_irqrestore(lock, flags)	__UNLOCK_IRQRESTORE(lock, flags)
_read_unlock_irqrestore  378 kernel/spinlock.c void __lockfunc _read_unlock_irqrestore(rwlock_t *lock, unsigned long flags)