linux-kernel - Re: [PATCH] sched/core: Report failed rt migrations to non-root cgroup without rt bandwidth under RT_GROUP

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Message-ID: <20250916173234.GB5293@pauld.westford.csb>
Date: Tue, 16 Sep 2025 13:32:34 -0400
From: Phil Auld <pauld@...hat.com>
To: Aaron Tomlin <atomlin@...mlin.com>
Cc: Michal Koutný <mkoutny@...e.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, shashank.mahadasyam@...y.com,
	longman@...hat.com, tj@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sched/core: Report failed rt migrations to non-root
 cgroup without rt bandwidth under RT_GROUP_SCHED

On Tue, Sep 16, 2025 at 01:23:36PM -0400 Aaron Tomlin wrote:
> On Tue, Sep 16, 2025 at 01:07:35PM -0400, Phil Auld wrote:
> >  CONFIG_RT_GROUP_SCHED is not enabled in RHEL9 and later.  It was on in
> >  RHEL8 which also defaulted to cgroupv1.
> 
> Hi Phil,
> 
> Sorry about that! It is only enabled on RHEL 8. I can see under
> redhat/configs/kernel-5.14.0-x86_64.config it is indeed disabled.
> 
>

Hi Aaron, No need to apologize.  I just wanted to clarify :)


CHeers,
Phil


> Kind regards,
> -- 
> Aaron Tomlin
> 

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