linux-kernel - Re: [RFC][PATCH 2/6] sched: Employ sched

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Message-ID: <ZyKgpI3YMTfzhgFK@slm.duckdns.org>
Date: Wed, 30 Oct 2024 11:09:56 -1000
From: Tejun Heo <tj@...nel.org>
To: Peter Zijlstra <peterz@...radead.org>
Cc: mingo@...nel.org, juri.lelli@...hat.com, vincent.guittot@...aro.org,
	dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com,
	mgorman@...e.de, vschneid@...hat.com, void@...ifault.com,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH 2/6] sched: Employ sched_change guards

On Wed, Oct 30, 2024 at 10:58:40AM -1000, Tejun Heo wrote:
> On Wed, Oct 30, 2024 at 04:12:57PM +0100, Peter Zijlstra wrote:
> --- a/kernel/sched/ext.c
> +++ b/kernel/sched/ext.c
> @@ -4496,6 +4496,8 @@ static void scx_ops_disable_workfn(struc
>  		const struct sched_class *new_class =
>  			__setscheduler_class(p->policy, p->prio);
>  
> +		update_rq_clock(task_rq(p));
> +

Oh, this probably should be paired with DEQUEUE_NOCLOCK.

Thanks.

-- 
tejun