diff mbox series

genirq: update affinity of secondary threads

Message ID 20230406180857.588682-1-john@metanate.com
State New
Headers
Series genirq: update affinity of secondary threads |

Commit Message

John Keeping April 6, 2023, 6:08 p.m. UTC 
  For interrupts with secondary threads, the affinity is applied when the
thread is created but if the interrupts affinity is changed later only
the primary thread is updated.

Update the secondary thread's affinity as well to keep all the
interrupt's activity on the assigned CPUs.

Signed-off-by: John Keeping <john@metanate.com>
---
 kernel/irq/manage.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 8ce75495e04f..4f76eb8b7fcf 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -189,9 +189,13 @@  void irq_set_thread_affinity(struct irq_desc *desc)
 {
 	struct irqaction *action;
 
-	for_each_action_of_desc(desc, action)
+	for_each_action_of_desc(desc, action) {
 		if (action->thread)
 			set_bit(IRQTF_AFFINITY, &action->thread_flags);
+		if (action->secondary && action->secondary->thread)
+			set_bit(IRQTF_AFFINITY,
+				&action->secondary->thread_flags);
+	}
 }
 
 #ifdef CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK