linux-kernel - Re: [PATCH] sched: Consider task_struct::saved_state in wait_task

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Message-ID: <20230526084749.Fb8g4H-s@linutronix.de>
Date:   Fri, 26 May 2023 10:47:49 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     linux-kernel@...r.kernel.org, Ben Segall <bsegall@...gle.com>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Mel Gorman <mgorman@...e.de>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Valentin Schneider <vschneid@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>
Subject: Re: [PATCH] sched: Consider task_struct::saved_state in
 wait_task_inactive().

On 2023-05-25 18:52:44 [+0200], Peter Zijlstra wrote:
> Urgh...
> 
> I've ended up with the below.. I've tried folding it with
> ttwu_state_match() but every attempt so far makes it an unholy mess.
> 
> Now, if only we had proper lock guard then we could drop another few
> lines, but alas.

perfect, thank you.
Tested the bits.

Sebastian