linux-kernel - Re: [PATCH sched_ext/for-6.11] sched, sched_ext: Replace scx_next_task_picked() with sched_class->switch

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Message-ID: <Znm93GMnCiAkcCIq@slm.duckdns.org>
Date: Mon, 24 Jun 2024 08:41:32 -1000
From: Tejun Heo <tj@...nel.org>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>, 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, changwoo@...lia.com, himadrics@...ia.fr,
	memxor@...il.com, andrea.righi@...onical.com,
	joel@...lfernandes.org, linux-kernel@...r.kernel.org,
	bpf@...r.kernel.org, kernel-team@...a.com
Subject: Re: [PATCH sched_ext/for-6.11] sched, sched_ext: Replace
 scx_next_task_picked() with sched_class->switch_class()

Hello, Peter.

On Mon, Jun 24, 2024 at 11:04:31AM +0200, Peter Zijlstra wrote:
> > I'll update the patch description to point to the previous message just in
> > case and apply it to sched_ext/for-6.11.
> 
> Can you please back merge and keep it a sane series? I'm going to have
> to review it (even though I still very strongly disagree with the whole
> thing) and there really is nothing worse than a series that introduces
> things only to remove/change them again later.

I started the sched_ext/for-6.11 branch last week with the v7 patchset:

  http://lkml.kernel.org/r/20240618212056.2833381-1-tj@kernel.org

and would much prefer to just run it as a normal branch. No matter what form
the patchset gets applied in, we'll have constant flow of changes, fixes,
reverts and improvements no matter what, so I'd much prefer to avoid another
round of reshuffling and reposting.

Thanks.

-- 
tejun