linux-kernel - Re: [patch V3 14/20] sched/mmcid: Serialize sched_mm_cid

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Message-ID: <84e063e0-350e-4608-b809-97114579019d@efficios.com>
Date: Thu, 30 Oct 2025 10:25:38 -0400
From: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To: Thomas Gleixner <tglx@...utronix.de>, LKML <linux-kernel@...r.kernel.org>
Cc: Peter Zijlstra <peterz@...radead.org>,
 Gabriele Monaco <gmonaco@...hat.com>, Michael Jeanson
 <mjeanson@...icios.com>, Jens Axboe <axboe@...nel.dk>,
 "Paul E. McKenney" <paulmck@...nel.org>,
 "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 V3 14/20] sched/mmcid: Serialize
 sched_mm_cid_fork()/exit() with a mutex

On 2025-10-29 09:09, Thomas Gleixner wrote:
> Prepare for the new CID management scheme which puts the CID ownership
> transition into the fork() and exit() slow path by serializing
> sched_mm_cid_fork()/exit() with it, so task list and cpu mask walks can be
> done in interruptible and preemptible code.

Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>

-- 
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com