Commit 80323598 authored by John Keeping's avatar John Keeping Committed by Thomas Gleixner
Browse files

genirq: Update affinity of secondary threads 



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 interrupts
activity on the assigned CPUs.

Signed-off-by: default avatarJohn Keeping <john@metanate.com>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20230406180857.588682-1-john@metanate.com
parent f4bf3ca2

kernel/irq/manage.c

+4 −1
Original line number Diff line number Diff line
@@ -189,9 +189,12 @@ 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