linux-kernel - Re: [PATCH v4 7/7] sched/fair: Fair server interface

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Message-ID: <20230906082514.GA30172@noisy.programming.kicks-ass.net>
Date:   Wed, 6 Sep 2023 10:25:14 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Daniel Bristot de Oliveira <bristot@...hat.com>
Cc:     Daniel Bristot de Oliveira <bristot@...nel.org>,
        Ingo Molnar <mingo@...hat.com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        Valentin Schneider <vschneid@...hat.com>,
        linux-kernel@...r.kernel.org,
        Luca Abeni <luca.abeni@...tannapisa.it>,
        Tommaso Cucinotta <tommaso.cucinotta@...tannapisa.it>,
        Thomas Gleixner <tglx@...utronix.de>,
        Joel Fernandes <joel@...lfernandes.org>,
        Vineeth Pillai <vineeth@...byteword.org>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Phil Auld <pauld@...hat.com>
Subject: Re: [PATCH v4 7/7] sched/fair: Fair server interface

On Wed, Sep 06, 2023 at 09:25:01AM +0200, Peter Zijlstra wrote:
> On Tue, Sep 05, 2023 at 06:17:26PM +0200, Daniel Bristot de Oliveira wrote:
> 
> > > Additionally, should not the deadline parameters be vetted by access
> > > control before being accepted ?
> > 
> > like security_task_getscheduler(p)? But we have no p...
> 
> I was thinking sched_dl_overflow() or thereabout. That still runs on p,
> but I'm thikning that should be easily adapted to dl_se or somesuch.

Clearly my scrambled brain confused admission control and access
control.