linux-kernel - Re: [PATCH v3 0/6] cpufreq: schedutil: fixes for flags updates

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Message-ID: <20171221102530.all2hqoyh77mffmf@hirez.programming.kicks-ass.net>
Date:   Thu, 21 Dec 2017 11:25:30 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Patrick Bellasi <patrick.bellasi@....com>,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        Ingo Molnar <mingo@...hat.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Morten Rasmussen <morten.rasmussen@....com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Todd Kjos <tkjos@...roid.com>,
        Joel Fernandes <joelaf@...gle.com>
Subject: Re: [PATCH v3 0/6] cpufreq: schedutil: fixes for flags updates

On Thu, Dec 21, 2017 at 02:45:02PM +0530, Viresh Kumar wrote:
> On 20-12-17, 16:43, Peter Zijlstra wrote:
> > The below makes more sense to me too; hmm?
> > 
> > @@ -335,12 +335,11 @@ static unsigned int sugov_next_freq_shar
> >  
> >  		j_max = j_sg_cpu->max;
> >  		j_util = sugov_aggregate_util(j_sg_cpu);
> > +		sugov_iowait_boost(j_sg_cpu, &util, &max);

This should 'obviously' have been:

		sugov_iowait_boost(j_sg_cpu, &j_util, *j_max);

> >  		if (j_util * max > j_max * util) {
> >  			util = j_util;
> >  			max = j_max;
> >  		}
> > -
> > -		sugov_iowait_boost(j_sg_cpu, &util, &max);