Commit 5fec6d5c authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

genirq/manage: Rework teardown_percpu_nmi() 



Use the new guards to get and lock the interrupt descriptor and tidy up the
code.

No functional change.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/all/20250429065422.552884529@linutronix.de
parent 65dd1f7c

kernel/irq/manage.c

+5 −14
Original line number Diff line number Diff line
@@ -2634,22 +2634,13 @@ int prepare_percpu_nmi(unsigned int irq) 
 */

void teardown_percpu_nmi(unsigned int irq)

{

	unsigned long flags;

	struct irq_desc *desc;



	WARN_ON(preemptible());



	desc = irq_get_desc_lock(irq, &flags,

				 IRQ_GET_DESC_CHECK_PERCPU);

	if (!desc)

	scoped_irqdesc_get_and_lock(irq, IRQ_GET_DESC_CHECK_PERCPU) {

		if (WARN_ON(!irq_is_nmi(scoped_irqdesc)))

			return;



	if (WARN_ON(!irq_is_nmi(desc)))

		goto out;



	irq_nmi_teardown(desc);

out:

	irq_put_desc_unlock(desc, flags);

		irq_nmi_teardown(scoped_irqdesc);

	}

}



static int __irq_get_irqchip_state(struct irq_data *data, enum irqchip_irq_state which, bool *state)