linux-kernel - Re: [PATCH] sched_ext: switch class when preempted by higher priority scheduler

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Message-ID: <Z32PyA22ULOf9rkN@slm.duckdns.org>
Date: Tue, 7 Jan 2025 10:34:16 -1000
From: Tejun Heo <tj@...nel.org>
To: Honglei Wang <jameshongleiwang@....com>
Cc: void@...ifault.com, arighi@...dia.com, changwoo@...lia.com,
	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,
	vschneid@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sched_ext: switch class when preempted by higher
 priority scheduler

Hello, Honglei.

On Tue, Jan 07, 2025 at 09:46:05AM +0800, Honglei Wang wrote:
> It might be helpful to give BPF Scheduler a chance to invoke
> cpu_release() function, if defined, when preempted by a higher
> priority scheduler class task.
> 
> Signed-off-by: Honglei Wang <jameshongleiwang@....com>

Can you update the patch description indicating that this is a bug fix?
ops.cpu_release() must be invoked in this case but is being skipped.

Thanks.

-- 
tejun