函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\sched\fair.c Create Date:2022-07-27 10:39:17
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：wakeup_preempt_entity

函数原型：static int wakeup_preempt_entity(struct sched_entity *curr, struct sched_entity *se)

返回类型：int

参数：

类型参数名称
struct sched_entity *curr
struct sched_entity *se
6518  vdiff等于vruntime减vruntime
6520  如果vdiff小于等于0则返回:负1
6523  gran等于wakeup_gran(se)
6524  如果vdiff大于gran则返回:1
6527  返回:0
调用者
名称描述
pick_next_entityPick the next process, keeping these things in mind, in this order:* 1) keep things fair between processes/task groups* 2) pick the "next" process, since someone really wants that to run* 3) pick the "last" process, for cache locality* 4) do not run the
check_preempt_wakeupPreempt the current task with a newly woken task if needed: