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genirq: Add request_percpu_irq_affinity() helper 

While it would be nice to simply make request_percpu_irq() take an affinity
mask, the churn is likely to be on the irritating side given that most
drivers do not give a damn about affinities.

So take the more innocuous path to provide a helper that parallels
request_percpu_irq(), with an affinity as a bonus argument.

Yes, request_percpu_irq_affinity() is a bit of a mouthful.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Will Deacon <will@kernel.org>
Link: https://patch.msgid.link/20251020122944.3074811-18-maz@kernel.org
pull/1354/merge
Marc Zyngier 2025-10-20 13:29:34 +01:00 committed by Thomas Gleixner
parent bdf4e2ac29
commit c734af3b2b
1 changed files with 9 additions and 0 deletions
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9
include/linux/interrupt.h
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@ -196,6 +196,15 @@ request_percpu_irq(unsigned int irq, irq_handler_t handler,
devname, NULL, percpu_dev_id);
}
static inline int __must_check
request_percpu_irq_affinity(unsigned int irq, irq_handler_t handler,
const char *devname, const cpumask_t *affinity,
void __percpu *percpu_dev_id)
{
return __request_percpu_irq(irq, handler, 0,
devname, affinity, percpu_dev_id);
}
extern int __must_check
request_percpu_nmi(unsigned int irq, irq_handler_t handler, const char *name,
const struct cpumask *affinity, void __percpu *dev_id);