Thread (30 messages) 30 messages, 7 authors, 2012-06-13

Re: [RFC 3/4] ARM: topology: Update cpu_power according to DT information

From: Jean Pihet <hidden>
Date: 2012-06-13 12:50:16
Also in: linux-arm-kernel, lkml

Hi Amit, Peter,

On Wed, Jun 13, 2012 at 2:47 PM, Peter Zijlstra [off-list ref] wrote:
On Wed, 2012-06-13 at 18:14 +0530, Amit Kucheria wrote:
quoted
Various discussions around power-aware scheduling have amplified the
need for the scheduler to have some knowledge of DVFS. This would then
require the scheduler to track 'cpu_power' ( = max power) and perhaps
a new variable 'current_power' that is changed by the DVFS framework.
Note that capacity is in fact a better term -- not to be confused with
the capacity as currently in use within the load-balancer. Luckily
there's no way to read that an not be confused.. uhmm :-)
quoted
The first goal, though, is to make sure that the scheduler can handle
different cpu_power values due to asymmetric cores.
I would think the very first goal was to do a simple packing balancer
before doing silly things with asymmetric setups.. but what do I know.
Sure! First things first ;p

Thanks for the details!

Regards,
Jean
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