Re: [PATCH 13/32] nohz: Adaptive tick stop and restart on nohzcpuset

[Peter Zijlstra]

On Mon, 2011-08-15 at 17:52 +0200, Frederic Weisbecker wrote:
> +bool cpuset_nohz_can_stop_tick(void)
> +{
> +       struct rq *rq;
> +
> +       rq = this_rq();
> +
> +       /* More than one running task need preemption */
> +       if (rq->nr_running > 1)
> +               return false;
> +
> +       return true;
> +} 

int sched_needs_cpu(int cpu), seems the right name, matches the existing
{rcu,printk,arch}_needs_cpu() functions.
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