linux-kernel - Re: [PATCH v4 2/7] cpufreq: Add boost frequency support in core

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Date:	Wed, 17 Jul 2013 18:31:19 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Lukasz Majewski <l.majewski@...ess.pl>,
	Dirk Brandewie <dirk.brandewie@...il.com>,
	Lukasz Majewski <l.majewski@...sung.com>,
	"cpufreq@...r.kernel.org" <cpufreq@...r.kernel.org>,
	Linux PM list <linux-pm@...r.kernel.org>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Jonghwa Lee <jonghwa3.lee@...sung.com>,
	Myungjoo Ham <myungjoo.ham@...sung.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Andre Przywara <andre.przywara@...aro.org>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Zhang Rui <rui.zhang@...el.com>,
	Eduardo Valentin <eduardo.valentin@...com>
Subject: Re: [PATCH v4 2/7] cpufreq: Add boost frequency support in core

On 17 July 2013 17:01, Rafael J. Wysocki <rjw@...k.pl> wrote:
> First off, I'm not sure how many applications actually use it and I think,
> if any, they should be able cope with the attribute not being present.
>
> Of course, if it turns out that yes, there are applications using it and no,
> they cannot cope with the missing attribute, we'll need to address this.
> That said such applications wouldn't work with earlier kernels in which that
> attribute wasn't present at all, so I suppose this is really unlikely.
>
> So, do whichever makes more sense to you: Design things to preserve the old
> behavior (which is sightly confusing) or design them to expose the attribute
> if the feature is actually supported and be prepared to address the (unlikely)
> case when some hypothetical applications break because of that.

Okay. Its better to keep it the way Lukasz designed it in his last patchset.
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