linux-kernel - Re: [PATCH v4] sched/fair: Use sched_domain_span() for topology_span

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Message-ID: <xhsmhwm8g13r4.mognet@vschneid-thinkpadt14sgen2i.remote.csb>
Date: Thu, 10 Jul 2025 17:09:51 +0200
From: Valentin Schneider <vschneid@...hat.com>
To: K Prateek Nayak <kprateek.nayak@....com>, Ingo Molnar
 <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, Juri Lelli
 <juri.lelli@...hat.com>, Vincent Guittot <vincent.guittot@...aro.org>,
 Leon
 Romanovsky <leon@...nel.org>, linux-kernel@...r.kernel.org
Cc: Steve Wahl <steve.wahl@....com>, Borislav Petkov <bp@...en8.de>, Dietmar
 Eggemann <dietmar.eggemann@....com>, Steven Rostedt <rostedt@...dmis.org>,
 Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>, K Prateek
 Nayak <kprateek.nayak@....com>
Subject: Re: [PATCH v4] sched/fair: Use sched_domain_span() for
 topology_span_sane()

On 09/07/25 16:19, K Prateek Nayak wrote:
> Suggested-by: Valentin Schneider <vschneid@...hat.com>
> Reported-by: Leon Romanovsky <leon@...nel.org>
> Closes: https://lore.kernel.org/lkml/20250610110701.GA256154@unreal/ [1]
> Fixes: ccf74128d66c ("sched/topology: Assert non-NUMA topology masks don't (partially) overlap") # ce29a7da84cd, f55dac1dafb3
> Reviewed-by: Steve Wahl <steve.wahl@....com>
> Tested-by: Valentin Schneider <vschneid@...hat.com>
> Reviewed-by: Valentin Schneider <vschneid@...hat.com>
> Signed-off-by: K Prateek Nayak <kprateek.nayak@....com>
> ---
> Changes are based on tip:sched/urgent at commit fc975cfb3639
> ("sched/deadline: Fix dl_server runtime calculation formula")
>
> Changelog v3..v4:
>
> o Use empty span to detect sd objects that haven't been initialized
>   instead of using "sd->private" (Valentin).
>

LGTM, thanks!