linux-kernel - Re: [PATCH 4/5] intel_pstate: Remove C0 tracking

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Message-ID: <5349714.j69a5Fx52S@vostro.rjw.lan>
Date:	Mon, 12 May 2014 14:16:41 +0200
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Stratos Karafotis <stratosk@...aphore.gr>,
	dirk.brandewie@...il.com,
	Dirk Brandewie <dirk.j.brandewie@...el.com>
Cc:	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH 4/5] intel_pstate: Remove C0 tracking

On Monday, May 12, 2014 05:27:25 AM Stratos Karafotis wrote:
> Hi,
> 

[cut]

> 
> With this patch, my CPU (Core i7-3770 @ 3.90GHz) seems to never use lowest
> frequencies. Even on an idle system I get always ~2GHz. Normally,
> on an idle system it used to be 1.6GHz.
> On very small loads (mp3 decoding) the CPU goes up to 2.7G GHz (it used to
> be 1.6GHz)
> 
> Reverting, this patch on my local build, the problem is resolved.

Dirk, seriously, I can't regard this as a fix that can go into -rc6.

Which of the other patch in the series are must-go for 3.15?  [1-2/5] I guess?
And do we need [2/5] it in -stable too?


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