Commit bdc370d6 authored Jan 30, 2023 by Yipeng Zou Committed by Yongqiang Liu Jan 30, 2023

genirq: Introduce warn log when irq be reentrant

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I6BO2R


CVE: NA

--------------------------------

Now we has nothing to show the log when the irq be reentrant in
multiple cpus.

The IRQD_IRQ_INPROGRESS means that the irq was in processing.

We can add an checkpoint here to indentifly this scenario.

Signed-off-by: Yipeng Zou <zouyipeng@huawei.com>
Reviewed-by: Zhang Jianhua <chris.zjh@huawei.com>
Signed-off-by: Yongqiang Liu <liuyongqiang13@huawei.com>

parent 9b7fffe9

kernel/irq/chip.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -513,6 +513,10 @@ static bool irq_may_run(struct irq_desc *desc)
		if (!irqd_has_set(&desc->irq_data, mask))
		return true;

		if (irqd_get(&desc->irq_data) & IRQD_IRQ_INPROGRESS)
		pr_warn_ratelimited("irq %u(%lu) may be reentrant in multiple cpus.\n",
		desc->irq_data.irq, desc->irq_data.hwirq);

		/*
		* If the interrupt is an armed wakeup source, mark it pending
		* and suspended, disable it and notify the pm core about the