Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\sched\fair.c Create Date:2022-07-28 09:38:31
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:clear_buddies

Proto:static void clear_buddies(struct cfs_rq *cfs_rq, struct sched_entity *se)

Type:void

Parameter:

TypeParameterName
struct cfs_rq *cfs_rq
struct sched_entity *se
4065  If last == se Then __clear_buddies_last(se)
4068  If next == se Then __clear_buddies_next(se)
4071  If skip == se Then __clear_buddies_skip(se)
Caller
NameDescribe
dequeue_entity
check_preempt_tickPreempt the current task with a newly woken task if needed:
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
yield_task_fairsched_yield() is very simple* The magic of dealing with the ->skip buddy is in pick_next_entity.