Re: [PATCH 2/2][RFC] time : set broadcast irq affinity

[Jacob Pan]

On Thu, 21 Feb 2013 23:01:23 +0100
Daniel Lezcano <daniel.lezcano@xxxxxxxxxx> wrote:

> +/*
> + * Set broadcast interrupt affinity
> + */
> +static void tick_broadcast_set_affinity(struct clock_event_device
> *bc, int cpu) +{
> +	struct cpumask cpumask;
> +
> +	if (!(bc->features & CLOCK_EVT_FEAT_DYNIRQ))
> +		return;
> +
> +	cpumask_clear(&cpumask);
> +	cpumask_set_cpu(cpu, &cpumask);
> +	irq_set_affinity(bc->irq, &cpumask);
would it be more efficient to keep track of the current bc->irq affinity
via cpumask then set it only if it is different?

-- 
Thanks,

Jacob
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