linux-kernel - Re: [PATCH v2 4/7] sched/fair: Add SHARED_RUNQ sched feature and skeleton calls

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Message-ID: <6111b87c-b68c-2ba9-ac60-333af67082fd@bytedance.com>
Date:   Wed, 12 Jul 2023 16:39:03 +0800
From:   Abel Wu <wuyun.abel@...edance.com>
To:     David Vernet <void@...ifault.com>, linux-kernel@...r.kernel.org
Cc:     mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de,
        bristot@...hat.com, vschneid@...hat.com, gautham.shenoy@....com,
        kprateek.nayak@....com, aaron.lu@...el.com, clm@...a.com,
        tj@...nel.org, roman.gushchin@...ux.dev, kernel-team@...a.com
Subject: Re: [PATCH v2 4/7] sched/fair: Add SHARED_RUNQ sched feature and
 skeleton calls

On 7/11/23 4:03 AM, David Vernet wrote:
> @@ -6467,6 +6489,9 @@ static void dequeue_task_fair(struct rq *rq, struct task_struct *p, int flags)
>   dequeue_throttle:
>   	util_est_update(&rq->cfs, p, task_sleep);
>   	hrtick_update(rq);
> +
> +	if (sched_feat(SHARED_RUNQ))
> +		shared_runq_dequeue_task(p);

Would disabling SHARED_RUNQ causing task list nodes left
in the shared stateful runqueue?