[RESEND PATCH 1/2] irqdesc: Add function to identify percpu_devid irqs

[Julien Thierry]

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.

Signed-off-by: Julien Thierry <julien.thierry at arm.com>
Cc: Thomas Gleixner <tglx at linutronix.de>
Cc: Marc Zyngier <marc.zyngier at arm.com>
---
 include/linux/irqdesc.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index 3e90a09..93960cf 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)
 {
--
1.9.1