linux-kernel - Re: mistake about the cpufreq?

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Date:	Tue, 5 Jul 2011 18:55:08 +0100
From:	Matthew Garrett <mjg@...hat.com>
To:	俞颐超 <yyc1992@...il.com>
Cc:	linux-kernel@...r.kernel.org, cpufreq@...r.kernel.org
Subject: Re: mistake about the cpufreq?

On Fri, Jul 01, 2011 at 09:17:08PM -0400, 俞颐超 wrote:

> So after reading the files in cpu-freq/, I saw it was mentioned in
> user-guide.txt that the scaling_ ones is what the kernel thinks the
> freq is and cpuinfo is the actual freq.
> y can these two be different?

Many systems don't have independently clockable cores. In that case the 
cpu will run at the speed of the highest clocked core.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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