Re: [Xen-devel] [PATCH 1 of 3] xen: sched_credit, improve tickling of idle CPUs

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2012-12-03 at 16:34 +0000, Dario Faggioli wrote:
> +            /*
> +             * If there aren't idlers for new, then letting new preempt cur 
> and
> +             * try to migrate cur becomes ineviable. If that is the case, 
> update

"inevitable"

> +             * the mask of the to-be-tickled CPUs accordingly (i.e., with 
> cur's
> +             * idlers instead of new's).
> +             */
> +            if ( new->pri > cur->pri && cpumask_empty(&idle_mask) )
> +                cpumask_and(&idle_mask, prv->idlers, 
> cur->vcpu->cpu_affinity);
> +

(I have nothing more intelligent to say...)


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