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Date:   Mon, 12 Dec 2022 12:22:43 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Tejun Heo <tj@...nel.org>
Cc:     torvalds@...ux-foundation.org, mingo@...hat.com,
        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,
        ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        martin.lau@...nel.org, joshdon@...gle.com, brho@...gle.com,
        pjt@...gle.com, derkling@...gle.com, haoluo@...gle.com,
        dvernet@...a.com, dschatzberg@...a.com, dskarlat@...cmu.edu,
        riel@...riel.com, linux-kernel@...r.kernel.org,
        bpf@...r.kernel.org, kernel-team@...a.com
Subject: Re: [PATCH 05/31] sched: Add sched_class->reweight_task()

On Tue, Nov 29, 2022 at 10:22:47PM -1000, Tejun Heo wrote:
> diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
> index a4a20046e586..08799b2a566e 100644
> --- a/kernel/sched/sched.h
> +++ b/kernel/sched/sched.h
> @@ -2193,6 +2193,8 @@ struct sched_class {
>  	 */
>  	void (*switched_from)(struct rq *this_rq, struct task_struct *task);
>  	void (*switched_to)  (struct rq *this_rq, struct task_struct *task);
> +	void (*reweight_task)(struct rq *this_rq, struct task_struct *task,
> +			      int newprio);
>  	void (*prio_changed) (struct rq *this_rq, struct task_struct *task,
>  			      int oldprio);

Hurmph.. this further propagate the existing problem of thinking that
'prio' is a useful concept in general (it isn't).

Yeah, you're just following precedent here, but still :/

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