linux-kernel - Re: [RESEND PATCH v3] sched/core: Skip user_cpus

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Message-ID: <zvam3p6t6kdmegdbmziqzvwuynxkmeikmedyxmyflk6fxyrx3t@rmqed2h7geej>
Date: Thu, 30 Oct 2025 11:56:13 +0100
From: Michal Koutný <mkoutny@...e.com>
To: Waiman Long <longman@...hat.com>
Cc: Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, 
	Juri Lelli <juri.lelli@...hat.com>, Vincent Guittot <vincent.guittot@...aro.org>, 
	Dietmar Eggemann <dietmar.eggemann@....com>, Steven Rostedt <rostedt@...dmis.org>, 
	Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>, 
	Valentin Schneider <vschneid@...hat.com>, linux-kernel@...r.kernel.org, cgroups@...r.kernel.org, 
	Chen Ridong <chenridong@...weicloud.com>, Johannes Weiner <hannes@...xchg.org>
Subject: Re: [RESEND PATCH v3] sched/core: Skip user_cpus_ptr masking if no
 online CPU left

Hi Waiman.

On Wed, Oct 29, 2025 at 05:27:24PM -0400, Waiman Long <longman@...hat.com> wrote:
...
> Reported-by: Chen Ridong <chenridong@...weicloud.com>
> Closes: https://lore.kernel.org/lkml/20250714032311.3570157-1-chenridong@huaweicloud.com/
> Fixes: da019032819a ("sched: Enforce user requested affinity")
> Signed-off-by: Waiman Long <longman@...hat.com>
> ---
>  kernel/sched/core.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)

Reviewed-by: Michal Koutný <mkoutny@...e.com>

(I had looked at v2 back then and reached the conclusion such a fix had
made sense.)

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