Re: [PATCH] x86,sched: Fix sched_smt_power_savings totally broken

From: Arjan van de Ven
Date: Mon Jan 09 2012 - 09:13:12 EST


On 1/9/2012 2:28 AM, Peter Zijlstra wrote:
> On Mon, 2012-01-09 at 11:06 +0100, Peter Zijlstra wrote:
>> I'm >< close to committing a patch removing all the power_saving
>> magic from the scheduler.
>
> Unless someone steps up that says they care about this crap and are
> willing to clean it up this goes in...
>

there is one legitimate choice to make in the scheduler, which is a real
honest preference:
the spread out versus "sort left" preference.

that doesn't need 15 knobs, that needs one.
I can totally buy that this might be easiest done by ripping out all
existing stuff, and then doing something relatively simple
(say, in the, "which CPU to run at" logic, a minor bias)


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