linux-kernel - Re: [PATCH 3/3] sched: Update ->next_balance correctly during newidle balance

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Date:   Fri, 20 Oct 2023 15:48:21 +0200
From:   Vincent Guittot <vincent.guittot@...aro.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     "Joel Fernandes (Google)" <joel@...lfernandes.org>,
        linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Valentin Schneider <vschneid@...hat.com>,
        "Vineeth Pillai (Google)" <vineeth@...byteword.org>,
        Suleiman Souhlal <suleiman@...gle.com>,
        Frederic Weisbecker <frederic@...nel.org>,
        "Paul E . McKenney" <paulmck@...nel.org>
Subject: Re: [PATCH 3/3] sched: Update ->next_balance correctly during newidle balance

Hi Ingo,

On Fri, 20 Oct 2023 at 09:53, Ingo Molnar <mingo@...nel.org> wrote:
>
>

...

> >                       curr_cost += domain_cost;
> >                       t0 = t1;
>
> Okay, I'm applying patches #2 and #3, without #1: it should be safe
> out of order, but let me know if I missed something ...

Could you hold on for patch 3 ? As replied to Joel, the patch had
regression in the update of rq->next_balance

>
> Thanks,
>
>         Ingo