Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\locking\rtmutex.c Create Date:2022-07-28 09:52:26
Last Modify:2020-03-17 14:26:38 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:Futex variant, must not use fastpath.

Proto:int __sched rt_mutex_futex_trylock(struct rt_mutex *lock)

Type:int

Parameter:

TypeParameterName
struct rt_mutex *lock
1531  Return Slow path try-lock function:
Caller
NameDescribe
futex_lock_piUserspace tried a 0 -> TID atomic transition of the futex value* and failed. The kernel side here does the whole locking operation:* if there are waiters then it will block as a consequence of relying* on rt-mutexes, it does PI, etc