C++ (Cpp) __irq_set_affinity_locked Examples

Example #1

/**
 *	irq_set_affinity - Set the irq affinity of a given irq
 *	@irq:		Interrupt to set affinity
 *	@mask:		cpumask
 *
 */
int irq_set_affinity(unsigned int irq, const struct cpumask *mask)
{
	struct irq_desc *desc = irq_to_desc(irq);
	unsigned long flags;
	int ret;

	if (!desc)
		return -EINVAL;

	raw_spin_lock_irqsave(&desc->lock, flags);
	ret =  __irq_set_affinity_locked(irq_desc_get_irq_data(desc), mask);
	raw_spin_unlock_irqrestore(&desc->lock, flags);
	return ret;
}

Example #2

File: irq.c Project: Lord-Devices/cm_kernel_samsung_hlte

static bool migrate_one_irq(struct irq_desc *desc)
{
	struct irq_data *d = irq_desc_get_irq_data(desc);
	const struct cpumask *affinity = d->affinity;
	bool ret = false;

	/*
	 * If this is a per-CPU interrupt, or the affinity does not
	 * include this CPU, then we have nothing to do.
	 */
	if (irqd_is_per_cpu(d) || !cpumask_test_cpu(smp_processor_id(), affinity))
		return false;

	if (cpumask_any_and(affinity, cpu_online_mask) >= nr_cpu_ids) {
 		affinity = cpu_online_mask;
		ret = true;
	}

	__irq_set_affinity_locked(d, affinity);
 
	return ret;
}