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Date:   Tue, 12 Jan 2021 15:53:30 +0100
From:   Peter Zijlstra <>
To:     Lai Jiangshan <>
Cc:     Valentin Schneider <>,
        Thomas Gleixner <>,
        LKML <>, Qian Cai <>,
        Vincent Donnefort <>,
        Dexuan Cui <>,
        Lai Jiangshan <>,
        Paul McKenney <>,
        Vincent Guittot <>,
        Steven Rostedt <>,
        Jens Axboe <>
Subject: Re: [PATCH -tip V3 0/8] workqueue: break affinity initiatively

On Tue, Jan 12, 2021 at 12:33:03PM +0800, Lai Jiangshan wrote:
> > Well yes, but afaict the workqueue stuff hasn't been settled yet, and
> > the rcutorture patch Paul did was just plain racy and who knows what
> > other daft kthread users are out there. That and we're at -rc3.
> I just send the V4 patchset for the workqueue.  Please take a look.

Yes, I've seen it. But I think this approach is smaller and simpler.

By distinguishing between geniuine per-cpu kthreads and kthreads that
happen to have a single CPU affinity, things become much simpler and

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