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Re: [Xen-devel] [RFC PATCH v1 00/16] xen: sched: implement core-scheduling

On Fri, 2018-10-12 at 10:35 +0200, Juergen Gross wrote:
> On 12/10/2018 09:49, Dario Faggioli wrote:
> > 
> > But how easy it is to opt out, if one doesn't want it? E.g., in the
> > context of L1TF, what if I'm not affected, and hence am not
> > interested
> > in core-scheduling? What if I want a cpupool with core-scheduling
> > and
> > one without?
> > 
> > I may be wrong, but out of the top of my head, but it seems to me
> > that
> > doing things in schedule.c makes this a lot harder, if possible at
> > all.
> Why? This would be a per-cpupool setting, so the scheduling
> granularity
> would live in struct scheduler.
Mmm... it's already starting to be a bit hard to reason, without
looking at at least a prototype of the code. :-/

But, anyway, if I'm in sched_dario.c, and schedule.c makes me reason in
terms of vCores, how do I deal with single CPUs for a particular
cpupool that does not want core-scheduling?

<<This happens because I choose it to happen!>> (Raistlin Majere)
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Software Engineer @ SUSE https://www.suse.com/

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