Messages in this thread Patch in this message | | | From | Sebastian Andrzej Siewior <> | Subject | [PATCH 2/5] irq_work: Ensure that irq_work runs in in-IRQ context. | Date | Mon, 27 Sep 2021 23:19:16 +0200 |
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The irq-work callback should be invoked in hardirq context and some callbacks rely on this behaviour. At the time irq_work_run_list() interrupts should be disabled but the important part is that the callback is invoked from a in-IRQ context. The "disabled interrupts" check can be satisfied by disabling interrupts from a kworker which is not the intended context.
Ensure that the callback is invoked from hardirq context and not just with disabled interrupts.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- kernel/irq_work.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/irq_work.c b/kernel/irq_work.c index db8c248ebc8c8..caf2edffa20d5 100644 --- a/kernel/irq_work.c +++ b/kernel/irq_work.c @@ -167,7 +167,7 @@ static void irq_work_run_list(struct llist_head *list) struct irq_work *work, *tmp; struct llist_node *llnode; - BUG_ON(!irqs_disabled()); + BUG_ON(!in_hardirq()); if (llist_empty(list)) return; -- 2.33.0
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