Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\locking\semaphore.c Create Date:2022-07-28 09:47:46
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:down_timeout - acquire the semaphore within a specified time*@sem: the semaphore to be acquired*@timeout: how long to wait before failing* Attempts to acquire the semaphore. If no more tasks are allowed to

Proto:int down_timeout(struct semaphore *sem, long timeout)

Type:int

Parameter:

TypeParameterName
struct semaphore *sem
longtimeout
158  result = 0
160  raw_spin_lock_irqsave( & lock, flags)
161  If Value is more likely to compile time(count > 0) Then count--
163  Else result = __down_timeout(sem, timeout)
165  raw_spin_unlock_irqrestore( & lock, flags)
167  Return result