Re: [Xen-devel] [PATCH 1/4] xen: sched: introduce 'adjust_affinity' hook.

[George Dunlap <george.dunlap@xxxxxxxxxx>]

On 09/15/2017 06:35 PM, Dario Faggioli wrote:
> For now, just as a way to give a scheduler an "heads up",
> about the fact that the affinity changed.
> 
> This enables some optimizations, such as pre-computing
> and storing (e.g., in flags) facts like a vcpu being
> exclusively pinned to a pcpu, or having or not a
> soft affinity. I.e., conditions that, despite the fact
> that they rarely change, are right now checked very
> frequently, even in hot paths.
> 
> Note also that this, in future, may turn out as a useful
> mean for, e.g., having the schedulers vet, ack or nack
> the changes themselves.
> 
> Signed-off-by: Dario Faggioli <dario.faggioli@xxxxxxxxxx>

Reviewed-by: George Dunlap <george.dunlap@xxxxxxxxxx>

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