d4374d49fa4ef8dd10
parent 448c8b1d07d5342922567e138a4b0108a42c24fb
author Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 1331683617 -0400
committer Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 1332271898 -0400

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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