From 803235982b8c086184d04798d9079d236f352f88 Mon Sep 17 00:00:00 2001 From: John Keeping Date: Thu, 6 Apr 2023 19:08:57 +0100 Subject: 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: John Keeping Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20230406180857.588682-1-john@metanate.com --- kernel/irq/manage.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'kernel/irq/manage.c') diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 8ce75495e04f..d2742af0f0fd 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -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 -- cgit v1.2.3