Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\locking\semaphore.c Create Date:2022-07-28 09:47:45
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:down_killable - acquire the semaphore unless killed*@sem: the semaphore to be acquired* Attempts to acquire the semaphore

Proto:int down_killable(struct semaphore *sem)

Type:int

Parameter:

TypeParameterName
struct semaphore *sem
104  result = 0
106  raw_spin_lock_irqsave( & lock, flags)
107  If Value is more likely to compile time(count > 0) Then count--
109  Else result = __down_killable(sem)
111  raw_spin_unlock_irqrestore( & lock, flags)
113  Return result