linux-kernel - Re: [PATCH v5 03/10] cpufreq/schedutil: add rt utilization tracking

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Date:   Wed, 30 May 2018 10:23:10 +0200
From:   Vincent Guittot <vincent.guittot@...aro.org>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Juri Lelli <juri.lelli@...hat.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Morten Rasmussen <Morten.Rasmussen@....com>,
        Valentin Schneider <valentin.schneider@....com>,
        Quentin Perret <quentin.perret@....com>
Subject: Re: [PATCH v5 03/10] cpufreq/schedutil: add rt utilization tracking

On 30 May 2018 at 09:03, Viresh Kumar <viresh.kumar@...aro.org> wrote:
> On 25-05-18, 15:12, Vincent Guittot wrote:
>> diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
>>       /*
>>        * Utilization required by DEADLINE must always be granted while, for
>> @@ -197,7 +205,7 @@ static unsigned long sugov_aggregate_util(struct sugov_cpu *sg_cpu)
>>        * util_cfs + util_dl as requested freq. However, cpufreq is not yet
>>        * ready for such an interface. So, we only do the latter for now.
>>        */
>> -     return min(sg_cpu->max, (sg_cpu->util_dl + sg_cpu->util_cfs));
>> +     return min(sg_cpu->max, util);
>
> Need to update comment above this line to include RT in that ?

yes good point

>
>>  }
>
> --
> viresh