linux-kernel - Re: [PATCH v2] cpufreq: stats: Add 'load_table' debugfs file to show accumulated data of CPUs

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Date:	Mon, 24 Jun 2013 13:00:41 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Chanwoo Choi <cw00.choi@...sung.com>
Cc:	Viresh Kumar <viresh.kumar@...aro.org>,
	linux-kernel@...r.kernel.org,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Myungjoo Ham <myungjoo.ham@...sung.com>
Subject: Re: [PATCH v2] cpufreq: stats: Add 'load_table' debugfs file to show accumulated data of CPUs

On Monday, June 24, 2013 04:03:15 PM Viresh Kumar wrote:
> On 24 June 2013 15:50, Rafael J. Wysocki <rjw@...k.pl> wrote:
> > My impression was that that new interface wouldn't be useful on all platforms
> > supported by cpufreq.  If that's the case, I'd rather not make changes in the
> > core code that are needed only to implement that new interface, at least to
> > start with.
> 
> Every platform might not have userspace software that would do some
> actions based on this. But, these are nice and useful stats to have.
> 
> They tell you a lot about how the hardware/governor/policies are
> behaving with load. And so will eventually help getting performance based
> on governor tunables for your platform. That's why I asked to put this in
> core as this should be pretty much useful.

OK, let's see how the code will look like.

Chanwoo, please prepare a v4 with the changes suggested by Viresh.

Thanks,
Rafael


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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