linux-kernel - Re: [RFC v2 0/3][TESTS] LAB: Support for Legacy Application Booster governor

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Message-ID: <41528879.GuKxJgVhIe@vostro.rjw.lan>
Date:	Mon, 27 May 2013 21:48:51 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Viresh Kumar <viresh.kumar@...aro.org>
Cc:	Lukasz Majewski <l.majewski@...sung.com>,
	Jonghwa Lee <jonghwa3.lee@...sung.com>,
	linux-kernel@...r.kernel.org, cpufreq@...r.kernel.org,
	linux-pm@...r.kernel.org,
	Vicent Guittot <vincent.guittot@...aro.org>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Lukasz Majewski <l.majewski@...ess.pl>
Subject: Re: [RFC v2 0/3][TESTS] LAB: Support for Legacy Application Booster governor - tests results

On Monday, May 27, 2013 06:54:49 PM Viresh Kumar wrote:
> On 27 May 2013 17:30, Rafael J. Wysocki <rjw@...k.pl> wrote:
> > Well, this really looks like software turbo modes, so let's call them
> > "TURBO" instead of "OVERDRIVE"
> 
> Yes, it looks better.
> 
> > and I seem to remember having a switch for
> > disabling/enabling turbo modes already.
> 
> This was added in intel_pstate driver and shows up in
> /sys/devices/system/cpu/cpufreq/ directory..
> 
> But this feature belongs to a governor instance and so
> will be present inside governor directory..
> 
> Specially for big LITTLE we want it to be per policy
> specific. So may need to add a new one.

I was talking about /sys/devices/system/cpu/cpufreq/boost that appears to
have been added by commit 615b730 (acpi-cpufreq: Add support for disabling
dynamic overclocking).

That's in acpi-cpufreq, but since that setting seems to be generally useful,
it may be a good idea to move it to the core somehow.

Thanks,
Rafael


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