Re: [RFC PATCH 0/3] CFS idle injection

From: Dietmar Eggemann
Date: Fri Nov 06 2015 - 13:30:21 EST

On 05/11/15 10:12, Peter Zijlstra wrote:
> People, trim your emails!
> On Wed, Nov 04, 2015 at 08:58:30AM -0800, Jacob Pan wrote:
>>> I also like #2 too. Specially now that it is not limited to a specific
>>> platform. One question though, could you still keep the cooling device
>>> support of it? In some systems, it might make sense to enable /
>>> disable idle injections based on temperature.
>> One of the key difference between 1 and 2 is that #2 is open loop
>> control, since we don't have CPU c-states info baked into scheduler.
> _yet_, there's people working on that. The whole power aware scheduling
> stuff needs that.

Isn't the idle state information (rq->idle_state) already used in

What we use in energy aware scheduling is quite similar but since we're
interested in the index information of the c-state (to access the right
element of the idle_state vectors of the energy model, we added


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