linux-kernel - Re: [PATCH 3/3] sched/fair: schedutil: explicit update only when required

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Message-ID: <20180511084219.GD30654@e110439-lin>
Date:   Fri, 11 May 2018 09:42:19 +0100
From:   Patrick Bellasi <patrick.bellasi@....com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        "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>,
        Joel Fernandes <joelaf@...gle.com>,
        Steve Muckle <smuckle@...gle.com>
Subject: Re: [PATCH 3/3] sched/fair: schedutil: explicit update only when
 required

On 11-May 11:13, Viresh Kumar wrote:
> On 10-05-18, 16:05, Patrick Bellasi wrote:
> > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
> > -static void attach_entity_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *se, int flags)
> > +static void attach_entity_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *se)
> >  {
> >  	u32 divider = LOAD_AVG_MAX - 1024 + cfs_rq->avg.period_contrib;
> >  
> > @@ -3762,7 +3736,6 @@ static void attach_entity_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *s
> >  
> >  	add_tg_cfs_propagate(cfs_rq, se->avg.load_sum);
> >  
> > -	cfs_rq_util_change(cfs_rq, flags);
> 
> Was leaving a blank line at the end of routine intentional ?

No, good catch. Will fix this, thanks!

> 
> >  }
> >  
> >  /**
> > @@ -3781,7 +3754,6 @@ static void detach_entity_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *s
> >  
> >  	add_tg_cfs_propagate(cfs_rq, -se->avg.load_sum);
> >  
> > -	cfs_rq_util_change(cfs_rq, 0);
> 
> Here too.
> 
> >  }
> -- 
> viresh

-- 
#include <best/regards.h>

Patrick Bellasi