linux-kernel - Re: [PATCH 0/2] sched/rt: disable RT_RUNTIME

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Message-ID: <20161115130126.xatko3n3bx4ohblx@uudg.org>
Date:   Tue, 15 Nov 2016 11:01:26 -0200
From:   "Luis Claudio R. Goncalves" <lclaudio@...g.org>
To:     Daniel Bristot de Oliveira <bristot@...hat.com>
Cc:     Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Clark Williams <williams@...hat.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] sched/rt: disable RT_RUNTIME_SHARE by default and
 document it

On Tue, Nov 15, 2016 at 11:39:09AM +0100, Daniel Bristot de Oliveira wrote:
> Disable RT_RUNTIME_SHARE by default and document it.
> 
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Steven Rostedt <rostedt@...dmis.org>
> Cc: Clark Williams <williams@...hat.com>
> Cc: Luis Claudio R. Goncalves <lgoncalv@...hat.com>
> Cc: linux-kernel@...r.kernel.org
> 
> Daniel Bristot de Oliveira (2):
>   sched/rt: Disable RT_RUNTIME_SHARE by default
>   sched/rt: Document RT_RUNTIME_SHARE sched feature
> 
>  kernel/sched/features.h | 12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)

Acked-by: Luis Claudio R. Goncalves <lgoncalv@...hat.com>

In light of the discussion about "sched/rt: RT_RUNTIME_GREED sched
feature", disabling RT_RUNTIME_SHARE by default restores a portion
of determinism we gave away by using the clever mechanism behind
RT_RUNTIME_SHARE. (I should have prefaced that with a IMHO).

Luis