linux-kernel - Re: [PATCH v5] sched/fair: Use sched_domain_span() for topology_span

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Message-ID: <20250825111627.GW3245006@noisy.programming.kicks-ass.net>
Date: Mon, 25 Aug 2025 13:16:27 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: K Prateek Nayak <kprateek.nayak@....com>
Cc: Ingo Molnar <mingo@...hat.com>, Juri Lelli <juri.lelli@...hat.com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Valentin Schneider <vschneid@...hat.com>,
	Leon Romanovsky <leon@...nel.org>, linux-kernel@...r.kernel.org,
	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>,
	srikar@...ux.vnet.ibm.com, hca@...ux.ibm.com
Subject: Re: [PATCH v5] sched/fair: Use sched_domain_span() for
 topology_span_sane()

On Mon, Aug 25, 2025 at 04:17:52PM +0530, K Prateek Nayak wrote:

> The above helpers may need guarding behind CONFIG_SCHED_{SMT,CLUSTER,MC}
> if I'm not mistaken. Possibility for some unification and cleanup with:
> 

> Thoughts?

I hate we need __maybe_unused on static inline functions, but yeah, that
might be nicer.

Can you fold the lot and stick that nice Changelog on? Then I'll get it
into sched/core and we can forget all about this stuff.