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From:   Valentin Schneider <valentin.schneider@arm.com>
To:     Yafang Shao <laoar.shao@gmail.com>
Cc:     Ingo Molnar <mingo@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Juri Lelli <juri.lelli@redhat.com>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Benjamin Segall <bsegall@google.com>,
        Mel Gorman <mgorman@suse.de>,
        Daniel Bristot de Oliveira <bristot@redhat.com>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH 2/4] sched/fair: Introduce cfs_migration
In-Reply-To: <CALOAHbAHQ0UBn2GqRNWQwH32UPOuFo0b550oi6WCKr8+wFgdsw@mail.gmail.com>
References: <20211104145713.4419-1-laoar.shao@gmail.com> <20211104145713.4419-3-laoar.shao@gmail.com> <87a6iitu3r.mognet@arm.com> <CALOAHbAHQ0UBn2GqRNWQwH32UPOuFo0b550oi6WCKr8+wFgdsw@mail.gmail.com>
Date:   Tue, 09 Nov 2021 10:47:22 +0000
Message-ID: <87tuglsj0l.mognet@arm.com>
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On 06/11/21 15:40, Yafang Shao wrote:
> It seems we'd better take the patch[1] I sent several weeks back.
>
> [1]. https://lore.kernel.org/lkml/20210615121551.31138-1-laoar.shao@gmail.com/
>

As Peter stated in that thread, this only reduces the race window and
doesn't eliminate it. The FIFO-1 smpboot idea is still a good one IMO.

> --
> Thanks
> Yafang