linux-kernel - Re: [RFC PATCH] sched/fair: call cpufreq hook in additional paths

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Message-ID: <20160401215358.GC2906@worktop>
Date:	Fri, 1 Apr 2016 23:53:58 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Steve Muckle <steve.muckle@...aro.org>
Cc:	Ingo Molnar <mingo@...hat.com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Morten Rasmussen <morten.rasmussen@....com>,
	Dietmar Eggemann <dietmar.eggemann@....com>,
	Juri Lelli <Juri.Lelli@....com>,
	Patrick Bellasi <patrick.bellasi@....com>,
	Michael Turquette <mturquette@...libre.com>,
	Byungchul Park <byungchul.park@....com>
Subject: Re: [RFC PATCH] sched/fair: call cpufreq hook in additional paths

On Fri, Apr 01, 2016 at 02:40:32PM -0700, Steve Muckle wrote:
> On 03/31/2016 02:14 AM, Peter Zijlstra wrote:
> > On Thu, Mar 31, 2016 at 09:59:51AM +0200, Peter Zijlstra wrote:
> >>> > >  - passing an argument into attach_entity_load_avg() to indicate                                                 
> >>> > >    whether calling the cpufreq hook is necessary
> >>> > > 
> >>> > > Both of these are ugly in their own way but would avoid a runtime
> >>> > > cost. Opinions welcome.
> >> > 
> >> > Lemme see what this would look like while I throw the below into the bit
> >> > bucket.
> > OK, so the below looks a lot more sane; and has the surprising benefit
> > of actually shrinking the text size..
> > 
> >   43675    1226      24   44925    af7d defconfig-build/kernel/sched/fair.o.base
> >   43723    1226      24   44973    afad defconfig-build/kernel/sched/fair.o.patch
> >   43595    1226      24   44845    af2d defconfig-build/kernel/sched/fair.o.patch+
> > 
> > ---
> > --- a/kernel/sched/fair.c
> > +++ b/kernel/sched/fair.c
> 
> Cool, thanks. Shall I fold this into this patch and resend the series of
> 3? Or would you prefer to add this change separately?

I think I've got it folded into your third patch, I haven't published
the queue yet though; I'll try and sort through the stuff I have on
Monday or so.