Kernel functionality which replaced cpuspeed daemon thermal limits ?
Matthew Garrett
mjg59 at srcf.ucam.org
Tue Apr 16 15:07:39 UTC 2013
On Tue, Apr 16, 2013 at 03:27:52PM +0200, Petr Ĺ abata wrote:
> On Wed, Apr 10, 2013 at 11:33:59AM +0100, Daniel P. Berrange wrote:
> > Can anyone point out the kernel cpufreq config that I might have missed
> > to make it take into account thermal sensors when controlling CPU freq ?
> >
> > If there is none, then I intend to re-submit cpuspeed for review and
> > inclusion in Fedora repos.
>
> Sadly, it seems kernel indeed doesn't provide any support for
> your specific case. You could easily write some scripts to
> handle this for you... or re-include cpuspeed again, yes.
The kernel pays attention to the thermal limits provided by the
platform. If the platform doesn't provide any thermal limits then you
can write a value to the passive file in the ACPI thermal zone and it'll
limit the frequency when it reaches that temperature.
--
Matthew Garrett | mjg59 at srcf.ucam.org
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