diff options
authorJulien Thierry <julien.thierry@arm.com>2017-10-13 12:26:44 +0100
committerWill Deacon <will.deacon@arm.com>2017-10-24 16:03:28 +0100
commit08395c7f4d9f5808b5754a0dbed969f378bde0c3 (patch)
parent5bdecb7971572a1aef828df507558e7a4dfe25ec (diff)
irqdesc: Add function to identify percpu_devid irqs
irq_is_percpu indicates whether an irq should only target a single cpu. PERCPU_DEVID flag indicates that an irq can be configured differently on each cpu it can target. Provide a function to check whether an irq is PERCPU_DEVID. Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Julien Thierry <julien.thierry@arm.com>
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index 3e90a094798d..93960cf36e23 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -244,6 +244,14 @@ static inline int irq_is_percpu(unsigned int irq)
return desc->status_use_accessors & IRQ_PER_CPU;
+static inline int irq_is_percpu_devid(unsigned int irq)
+ struct irq_desc *desc;
+ desc = irq_to_desc(irq);
+ return desc->status_use_accessors & IRQ_PER_CPU_DEVID;
static inline void
irq_set_lockdep_class(unsigned int irq, struct lock_class_key *class)

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