函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\locking\semaphore.c Create Date:2022-07-27 10:48:05
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：down_killable - acquire the semaphore unless killed*@sem: the semaphore to be acquired* Attempts to acquire the semaphore

函数原型：int down_killable(struct semaphore *sem)

返回类型：int

参数：

类型参数名称
struct semaphore *sem
104  result等于0
106  raw_spin_lock_irqsave( & lock, flags)
107  如果此条件成立可能性大(为编译器优化)(count > 0)则count自减
109  否则result等于__down_killable(sem)
111  raw_spin_unlock_irqrestore( & lock, flags)
113  返回:result