linux-kernel - Re: [PATCH] sched/rt: optimize checking group rt scheduler constraints

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Message-ID: <20200125164046.GQ2437@uranus>
Date:   Sat, 25 Jan 2020 19:40:46 +0300
From:   Cyrill Gorcunov <gorcunov@...il.com>
To:     Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
Cc:     linux-kernel@...r.kernel.org, Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>,
        Ingo Molnar <mingo@...hat.com>, Mel Gorman <mgorman@...e.de>,
        Dietmar Eggemann <dietmar.eggemann@....com>
Subject: Re: [PATCH] sched/rt: optimize checking group rt scheduler
 constraints

On Sat, Jan 25, 2020 at 07:15:16PM +0300, Konstantin Khlebnikov wrote:
> > > +	css_task_iter_start(&tg->css, 0, &it);
> > > +	while (!ret && (task = css_task_iter_next(&it)))
> > > +		ret |= rt_task(task);
> > 
> > Plain 'ret = rt_task(task);' won't work?
> 
> Should work too =)

:-) no need for new patch then, we could update it on top if needed
but i guess compiler would optimize it as is.