linux-kernel - Re: Re: [PATCH 1/2] cgroup/cpuset: Make cpuset hotplug processing synchronous

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Message-ID: <tm5kvzgn2g5yv63zoyqvd2bdrgl7l3ytffu4cq4ybxyq5irp76@hpmq3zfbtmlp>
Date: Wed, 3 Apr 2024 16:56:52 +0200
From: Michal Koutný <mkoutny@...e.com>
To: Waiman Long <longman@...hat.com>
Cc: Valentin Schneider <vschneid@...hat.com>, Tejun Heo <tj@...nel.org>, 
	Zefan Li <lizefan.x@...edance.com>, Johannes Weiner <hannes@...xchg.org>, 
	Thomas Gleixner <tglx@...utronix.de>, Peter Zijlstra <peterz@...radead.org>, 
	"Rafael J. Wysocki" <rafael@...nel.org>, Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>, 
	Shuah Khan <shuah@...nel.org>, linux-kernel@...r.kernel.org, cgroups@...r.kernel.org, 
	linux-pm@...r.kernel.org, linux-kselftest@...r.kernel.org, 
	Frederic Weisbecker <frederic@...nel.org>, "Paul E. McKenney" <paulmck@...nel.org>, 
	Ingo Molnar <mingo@...nel.org>, Anna-Maria Behnsen <anna-maria@...utronix.de>, 
	Alex Shi <alexs@...nel.org>, Vincent Guittot <vincent.guittot@...aro.org>, 
	Barry Song <song.bao.hua@...ilicon.com>
Subject: Re: Re: [PATCH 1/2] cgroup/cpuset: Make cpuset hotplug processing
 synchronous

On Wed, Apr 03, 2024 at 10:47:33AM -0400, Waiman Long <longman@...hat.com> wrote:
> should be rare these days as it will only apply in the case of cgroup
> v1 under certain condtion,

Could the migration be simply omitted it those special cases?

(Tasks remain in cpusets with empty cpusets -- that already happens in
with the current patch before workqueue is dispatched.)

Michal

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