Messages in this thread |  | | Date | Wed, 3 Oct 2018 18:24:35 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v7 05/14] sched: Introduce a sched_feat for Energy Aware Scheduling |
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On Tue, Oct 02, 2018 at 02:08:21PM +0100, Quentin Perret wrote: > On Tuesday 02 Oct 2018 at 14:34:16 (+0200), Peter Zijlstra wrote:
> > So these are debug knobs.. I would expect there to be a regular > > static_key that is controlled by the presence of EM data. > > Right, the issue I'm trying to solve with this is basically that _some_ > users will want to have an EM for the thermal stuff, but they will want > EAS disabled. Some people (not very many that's true, but still) use > big.little and don't care much about energy ... > > So, there is a need for an EAS knob on the scheduler side. I don't mind > it being something else than a sched_feat, but I couldn't see a better > option. Another Kconfig (CONFIG_SCHED_ENERGY) ? A sysctl ?
Yeah, sysctl, see for example: sysctl.kernel.numa_balancing and the sched_numa_balancing static_key that goes with it.
I would default enable EAS if the EM is there and valid, but allow people to disable it.
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