Messages in this thread | | | Date | Tue, 19 Jun 2018 20:42:50 +0200 | From | Peter Zijlstra <> | Subject | Re: [RFC PATCH v3 05/10] sched/topology: Reference the Energy Model of CPUs when available |
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On Tue, Jun 19, 2018 at 06:13:17PM +0100, Quentin Perret wrote: > I agree having one list per root_domain should be better. I'll change that > in v4. But I also think the idea of a global static_key is broken then.
Static keys are global per definition, there is only a single copy of the code.
You have to enable if there is a root domain with more than 1 freq-domain.
> We need a per root_domain thing as well. The SD_ASYM_CPUCAPACITY flag > might be set on one hierarchy and not the other for ex. Not sure if > attaching a static_key to each root_domain really makes sense though ... > > Would replacing the static_key by a flag attached to the root_domain be > reasonable ?
Keep the static key as is, enable if any root domain needs it.
> > (and an empty list if there is but one entry on). > > Sorry but I didn't understand that ...
If you have only a single freq-domain, there is nothing to do, right?
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