From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Wed, 14 Mar 2012 00:06:57 +0000 (-0400)
Subject: xen/cpufreq: Disable the cpu frequency scaling drivers from loading.
X-Git-Tag: v3.4-rc1~94^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=48cdd8287f47a3cdad5b9273a5ef81bf605f7826;p=pandora-kernel.git

xen/cpufreq: Disable the cpu frequency scaling drivers from loading.

By using the functionality provided by "[CPUFREQ]: provide
disable_cpuidle() function to disable the API."

Under the Xen hypervisor we do not want the initial domain to exercise
the cpufreq scaling drivers. This is b/c the Xen hypervisor is
in charge of doing this as well and we can end up with both the
Linux kernel and the hypervisor trying to change the P-states
leading to weird performance issues.

Acked-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
[v2: Fix compile error spotted by Benjamin Schweikert <b.schweikert@googlemail.com>]
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