linux-kernel - Re: [patch V5 09/20] cpumask: Cache num_possible

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Message-ID: <87pl99j32b.ffs@tglx>
Date: Sat, 22 Nov 2025 20:10:52 +0100
From: Thomas Gleixner <tglx@...utronix.de>
To: paulmck@...nel.org, Marek Szyprowski <m.szyprowski@...sung.com>
Cc: LKML <linux-kernel@...r.kernel.org>, Peter Zijlstra
 <peterz@...radead.org>, Gabriele Monaco <gmonaco@...hat.com>, Mathieu
 Desnoyers <mathieu.desnoyers@...icios.com>, Michael Jeanson
 <mjeanson@...icios.com>, Jens Axboe <axboe@...nel.dk>, "Gautham R. Shenoy"
 <gautham.shenoy@....com>, Florian Weimer <fweimer@...hat.com>, Tim Chen
 <tim.c.chen@...el.com>, Yury Norov <yury.norov@...il.com>, Shrikanth Hegde
 <sshegde@...ux.ibm.com>
Subject: Re: [patch V5 09/20] cpumask: Cache num_possible_cpus()

On Sat, Nov 22 2025 at 10:47, Paul E. McKenney wrote:
> On Fri, Nov 21, 2025 at 11:56:44PM +0100, Marek Szyprowski wrote:
>> On 19.11.2025 18:27, Thomas Gleixner wrote:
> My current guess is that the snapshot is taken too early, though I would
> be more confident of that if it happened on TREE01, in which CPUs come
> online quite late.

  https://lore.kernel.org/all/87zf8ehyf7.ffs@tglx