From: Patrick Bellasi <patrick.bellasi@arm.com>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
"Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
Viresh Kumar <viresh.kumar@linaro.org>,
Vincent Guittot <vincent.guittot@linaro.org>,
Paul Turner <pjt@google.com>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Morten Rasmussen <morten.rasmussen@arm.com>,
Juri Lelli <juri.lelli@redhat.com>, Todd Kjos <tkjos@android.com>,
Joel Fernandes <joelaf@google.com>
Subject: Re: [PATCH v2 4/4] sched/cpufreq_schedutil: use util_est for OPP selection
Date: Mon, 18 Dec 2017 10:48:35 +0000 [thread overview]
Message-ID: <20171218104835.GG19821@e110439-lin> (raw)
In-Reply-To: <1730241.78TPuThRce@aspire.rjw.lan>
Hi Rafael,
On 16-Dec 03:35, Rafael J. Wysocki wrote:
> On Tuesday, December 5, 2017 6:10:18 PM CET Patrick Bellasi wrote:
[...]
> > diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
> > index 2f52ec0f1539..465430d99440 100644
> > --- a/kernel/sched/cpufreq_schedutil.c
> > +++ b/kernel/sched/cpufreq_schedutil.c
> > @@ -183,7 +183,11 @@ static void sugov_get_util(unsigned long *util, unsigned long *max, int cpu)
> >
> > cfs_max = arch_scale_cpu_capacity(NULL, cpu);
> >
> > - *util = min(rq->cfs.avg.util_avg, cfs_max);
> > + *util = rq->cfs.avg.util_avg;
>
> I would use a local variable here.
>
> That *util everywhere looks a bit dirtyish.
Yes, right... will update for the next respin.
>
> > + if (sched_feat(UTIL_EST))
> > + *util = max(*util, rq->cfs.util_est_runnable);
> > + *util = min(*util, cfs_max);
> > +
> > *max = cfs_max;
> > }
> >
> >
Cheers Patrick
--
#include <best/regards.h>
Patrick Bellasi
next prev parent reply other threads:[~2017-12-18 10:48 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-05 17:10 [PATCH v2 0/4] Utilization estimation (util_est) for FAIR tasks Patrick Bellasi
2017-12-05 17:10 ` [PATCH v2 1/4] sched/fair: always used unsigned long for utilization Patrick Bellasi
2017-12-06 8:56 ` Vincent Guittot
2018-01-10 12:14 ` [tip:sched/core] sched/fair: Use 'unsigned long' for utilization, consistently tip-bot for Patrick Bellasi
2017-12-05 17:10 ` [PATCH v2 2/4] sched/fair: add util_est on top of PELT Patrick Bellasi
2017-12-13 16:05 ` Peter Zijlstra
2017-12-15 14:02 ` Patrick Bellasi
2017-12-15 14:07 ` Peter Zijlstra
2017-12-15 15:22 ` Patrick Bellasi
2017-12-13 16:16 ` Peter Zijlstra
2017-12-15 12:14 ` Patrick Bellasi
2017-12-15 12:53 ` Peter Zijlstra
2017-12-15 15:41 ` Patrick Bellasi
2017-12-20 8:57 ` Peter Zijlstra
2017-12-20 9:02 ` Peter Zijlstra
2017-12-13 16:19 ` Peter Zijlstra
2017-12-13 16:36 ` Patrick Bellasi
2017-12-13 17:03 ` Peter Zijlstra
2017-12-15 12:03 ` Patrick Bellasi
2017-12-15 12:58 ` Peter Zijlstra
2017-12-05 17:10 ` [PATCH v2 3/4] sched/fair: use util_est in LB and WU paths Patrick Bellasi
2017-12-05 17:10 ` [PATCH v2 4/4] sched/cpufreq_schedutil: use util_est for OPP selection Patrick Bellasi
2017-12-16 2:35 ` Rafael J. Wysocki
2017-12-18 10:48 ` Patrick Bellasi [this message]
2017-12-13 16:03 ` [PATCH v2 0/4] Utilization estimation (util_est) for FAIR tasks Peter Zijlstra
2017-12-13 16:23 ` Patrick Bellasi
2017-12-13 17:56 ` Mike Galbraith
2017-12-15 16:13 ` Patrick Bellasi
2017-12-15 20:23 ` Mike Galbraith
2017-12-16 6:37 ` Mike Galbraith
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