Commit 7e04e5c6 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

genirq/manage: Rework __irq_apply_affinity_hint() 



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/20250429065421.897188799@linutronix.de
parent b0561582

kernel/irq/manage.c

+10 −12
Original line number Diff line number Diff line
@@ -480,26 +480,24 @@ int irq_force_affinity(unsigned int irq, const struct cpumask *cpumask) 
}

EXPORT_SYMBOL_GPL(irq_force_affinity);



int __irq_apply_affinity_hint(unsigned int irq, const struct cpumask *m,

			      bool setaffinity)

int __irq_apply_affinity_hint(unsigned int irq, const struct cpumask *m, bool setaffinity)

{

	unsigned long flags;

	struct irq_desc *desc = irq_get_desc_lock(irq, &flags, IRQ_GET_DESC_CHECK_GLOBAL);

	int ret = -EINVAL;



	if (!desc)

		return -EINVAL;

	desc->affinity_hint = m;

	irq_put_desc_unlock(desc, flags);

	if (m && setaffinity)

	scoped_irqdesc_get_and_lock(irq, IRQ_GET_DESC_CHECK_GLOBAL) {

		scoped_irqdesc->affinity_hint = m;

		ret = 0;

	}



	if (!ret && m && setaffinity)

		__irq_set_affinity(irq, m, false);

	return 0;

	return ret;

}

EXPORT_SYMBOL_GPL(__irq_apply_affinity_hint);



static void irq_affinity_notify(struct work_struct *work)

{

	struct irq_affinity_notify *notify =

		container_of(work, struct irq_affinity_notify, work);

	struct irq_affinity_notify *notify = container_of(work, struct irq_affinity_notify, work);

	struct irq_desc *desc = irq_to_desc(notify->irq);

	cpumask_var_t cpumask;