linux-kernel - Re: [PATCH 03/23] sched,crypto: Convert to sched_set

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Message-ID: <20200422133319.GA7640@gondor.apana.org.au>
Date:   Wed, 22 Apr 2020 23:33:19 +1000
From:   Herbert Xu <herbert@...dor.apana.org.au>
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 03/23] sched,crypto: Convert to sched_set_fifo*()

On Wed, Apr 22, 2020 at 01:27:22PM +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.
> 
> Use sched_set_fifo() to request SCHED_FIFO and delegate
> actual priority selection to userspace. Effectively no change in
> behaviour.
> 
> Cc: herbert@...dor.apana.org.au
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
> Reviewed-by: Ingo Molnar <mingo@...nel.org>
> ---
>  crypto/crypto_engine.c |    3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)

Acked-by: Herbert Xu <herbert@...dor.apana.org.au>
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt