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Date: Fri, 28 Oct 2022 11:34:01 +0200 From: Vincent Guittot <vincent.guittot@...aro.org> To: mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com, dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de, bristot@...hat.com, vschneid@...hat.com, linux-kernel@...r.kernel.org, parth@...ux.ibm.com Cc: qais.yousef@....com, chris.hyser@...cle.com, patrick.bellasi@...bug.net, David.Laight@...lab.com, pjt@...gle.com, pavel@....cz, tj@...nel.org, qperret@...gle.com, tim.c.chen@...ux.intel.com, joshdon@...gle.com, timj@....org, kprateek.nayak@....com, yu.c.chen@...el.com, youssefesmat@...omium.org, joel@...lfernandes.org, Vincent Guittot <vincent.guittot@...aro.org> Subject: [PATCH v7 7/9] sched/core: Support latency priority with sched core Take into account wakeup_latency_gran() when ordering the cfs threads. Signed-off-by: Vincent Guittot <vincent.guittot@...aro.org> --- kernel/sched/fair.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 9583936ce30c..a7372f80b1ea 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -11439,6 +11439,9 @@ bool cfs_prio_less(struct task_struct *a, struct task_struct *b, bool in_fi) delta = (s64)(sea->vruntime - seb->vruntime) + (s64)(cfs_rqb->min_vruntime_fi - cfs_rqa->min_vruntime_fi); + /* Take into account latency prio */ + delta -= wakeup_latency_gran(sea, seb); + return delta > 0; } #else -- 2.17.1
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