Commit 8b8d94a7 authored by MaJun's avatar MaJun Committed by Marc Zyngier

irqchip/gicv3-its: Skip irq affinity setting when target cpu is the same as current setting

Just skip the irq affinity setting when the target cpu is the same as
current setting.
This is a small optimization for irq affinity setting logic.
Signed-off-by: default avatarMaJun <majun258@huawei.com>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent 3403b025
...@@ -644,9 +644,12 @@ static int its_set_affinity(struct irq_data *d, const struct cpumask *mask_val, ...@@ -644,9 +644,12 @@ static int its_set_affinity(struct irq_data *d, const struct cpumask *mask_val,
if (cpu >= nr_cpu_ids) if (cpu >= nr_cpu_ids)
return -EINVAL; return -EINVAL;
target_col = &its_dev->its->collections[cpu]; /* don't set the affinity when the target cpu is same as current one */
its_send_movi(its_dev, target_col, id); if (cpu != its_dev->event_map.col_map[id]) {
its_dev->event_map.col_map[id] = cpu; target_col = &its_dev->its->collections[cpu];
its_send_movi(its_dev, target_col, id);
its_dev->event_map.col_map[id] = cpu;
}
return IRQ_SET_MASK_OK_DONE; return IRQ_SET_MASK_OK_DONE;
} }
......
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