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

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Message-ID: <CAJZ5v0iz2wxTbKvH4_YkE5wQswWATBGNo08RRmbY_SCA_n4tgw@mail.gmail.com>
Date:	Thu, 31 Mar 2016 13:50:24 +0200
From:	"Rafael J. Wysocki" <rafael@...nel.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Steve Muckle <steve.muckle@...aro.org>,
	Ingo Molnar <mingo@...hat.com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-pm@...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 Thu, Mar 31, 2016 at 11:14 AM, Peter Zijlstra <peterz@...radead.org> 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;

Yup.

> 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+

Interesting. :-)