linux-kernel - Re: [PATCH v3 04/10] sched/fair: Let low-priority cores help high-priority busy SMT cores

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Message-ID: <Y+TexehP3140vxBu@hirez.programming.kicks-ass.net>
Date:   Thu, 9 Feb 2023 12:53:41 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Vincent Guittot <vincent.guittot@...aro.org>
Cc:     Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Ricardo Neri <ricardo.neri@...el.com>,
        "Ravi V. Shankar" <ravi.v.shankar@...el.com>,
        Ben Segall <bsegall@...gle.com>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Len Brown <len.brown@...el.com>, Mel Gorman <mgorman@...e.de>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Valentin Schneider <vschneid@...hat.com>,
        Ionela Voinescu <ionela.voinescu@....com>, x86@...nel.org,
        linux-kernel@...r.kernel.org, "Tim C . Chen" <tim.c.chen@...el.com>
Subject: Re: [PATCH v3 04/10] sched/fair: Let low-priority cores help
 high-priority busy SMT cores

On Wed, Feb 08, 2023 at 08:56:32AM +0100, Vincent Guittot wrote:

> > +                       if (env->sd->flags & SD_SHARE_CPUCAPACITY ||
> > +                           (!(env->sd->flags & SD_SHARE_CPUCAPACITY) && is_core_idle(i)))
> 
> This 2nd if could be merged with the upper one

Wasn't this exact same condition used in the previous patch as well?
Does it wants to be a helper perhaps?