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-rw-r--r--kernel/irq/manage.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index bf606a53a21c..89a3ea82569b 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -282,7 +282,7 @@ setup_affinity(unsigned int irq, struct irq_desc *desc, struct cpumask *mask)
{
struct irq_chip *chip = irq_desc_get_chip(desc);
struct cpumask *set = irq_default_affinity;
- int ret;
+ int ret, node = desc->irq_data.node;
/* Excludes PER_CPU and NO_BALANCE interrupts */
if (!irq_can_set_affinity(irq))
@@ -301,6 +301,13 @@ setup_affinity(unsigned int irq, struct irq_desc *desc, struct cpumask *mask)
}
cpumask_and(mask, cpu_online_mask, set);
+ if (node != NUMA_NO_NODE) {
+ const struct cpumask *nodemask = cpumask_of_node(node);
+
+ /* make sure at least one of the cpus in nodemask is online */
+ if (cpumask_intersects(mask, nodemask))
+ cpumask_and(mask, mask, nodemask);
+ }
ret = chip->irq_set_affinity(&desc->irq_data, mask, false);
switch (ret) {
case IRQ_SET_MASK_OK: