linux-kernel - Re: [PATCH 21/23] sched,psi: Convert to sched_set_fifo

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Message-ID: <20200422152233.GA364282@cmpxchg.org>
Date:   Wed, 22 Apr 2020 11:22:33 -0400
From:   Johannes Weiner <hannes@...xchg.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     mingo@...nel.org, linux-kernel@...r.kernel.org, tglx@...utronix.de,
        rostedt@...dmis.org, qais.yousef@....com, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        bsegall@...gle.com, mgorman@...e.de
Subject: Re: [PATCH 21/23] sched,psi: Convert to sched_set_fifo_low()

On Wed, Apr 22, 2020 at 01:27:40PM +0200, Peter Zijlstra wrote:
> Because SCHED_FIFO is a broken scheduler model (see previous patches)
> take away the priority field, the kernel can't possibly make an
> informed decision.
> 
> Effectively no change.
> 
> Cc: hannes@...xchg.org
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
> Reviewed-by: Ingo Molnar <mingo@...nel.org>

Acked-by: Johannes Weiner <hannes@...xchg.org>