AcoSail/kernel_optimize_test
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genirq: Always apply cpu online mask

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If the affinity had been set by the user, then a later request_irq()
will honour that setting. But online cpus can have changed. So apply
the online mask and for this case as well.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2011-02-07 17:05:08 +01:00
parent b008207cbd
commit 569bda8df1
1 changed files with 6 additions and 6 deletions
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12
kernel/irq/manage.c
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@ -256,6 +256,8 @@ EXPORT_SYMBOL_GPL(irq_set_affinity_notifier);
*/
static int setup_affinity(unsigned int irq, struct irq_desc *desc)
{
struct cpumask *set = irq_default_affinity;
/* Excludes PER_CPU and NO_BALANCE interrupts */
if (!irq_can_set_affinity(irq))
return 0;
@ -265,15 +267,13 @@ static int setup_affinity(unsigned int irq, struct irq_desc *desc)
* one of the targets is online.
*/
if (desc->status & (IRQ_AFFINITY_SET)) {
if (cpumask_any_and(desc->irq_data.affinity, cpu_online_mask)
< nr_cpu_ids)
goto set_affinity;
if (cpumask_intersects(desc->irq_data.affinity,
cpu_online_mask))
set = desc->irq_data.affinity;
else
desc->status &= ~IRQ_AFFINITY_SET;
}
cpumask_and(desc->irq_data.affinity, cpu_online_mask, irq_default_affinity);
set_affinity:
cpumask_and(desc->irq_data.affinity, cpu_online_mask, set);
desc->irq_data.chip->irq_set_affinity(&desc->irq_data, desc->irq_data.affinity, false);
return 0;