函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\rcu\tree.c Create Date:2022-07-27 11:26:31
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Helper function for swait_event_idle_exclusive() wakeup at force-quiescent-state* time.

函数原型：static bool rcu_gp_fqs_check_wake(int *gfp)

返回类型：bool

参数：

类型参数名称
int *gfp
1599  rnp等于Return the root node of the rcu_state structure.
1602  gfp等于READ_ONCE(Commands for GP task. )
1603  如果gfp按位与Need grace-period quiescent-state forcing. 则返回:true
1607  如果非READ_ONCE(CPUs or groups that need to switch in )且非rcu_preempt_blocked_readers_cgp(rnp)则返回:true
1610  返回:false
调用者
名称描述
rcu_gp_fqs_loopLoop doing repeated quiescent-state forcing until the grace period ends.