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

[Peter Zijlstra]

On Mon, 2012-01-09 at 15:29 +0100, Vincent Guittot wrote:

> I'm also using sched_mc level for doing powersaving load balance on
> ARM platform and we have real benefits.

Right, I've never said that power aware balancing was without merit, I
know it matters (quite a lot for some).

> We might modify the way we choose between power or performance mode
> because it's not always a matter of gathering or spreading tasks on
> cpus but until we found a best interface it's the way to enable
> powersaving mode

Sure, it was the only interface available.

But I really want to get rid of the topology based knobs we have now,
preferably I even want to get rid of the multi-value thing.

pjt still needs to post his linsched rework *poke* *poke*, that should
give a good basis to rework most of this without regressing the world
and then some.

But even without that I think we can do better than we do currently.


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