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Subject[PATCH V2 1/2] genirq: Add an accessor for IRQ_PER_CPU flag
Date
This patch adds an accessor function for IRQ_PER_CPU flag.
The accessor function is useful to dertermine whether an IRQ is percpu or not.

Signed-off-by: Vinayak Kale <vkale@apm.com>
---
include/linux/irqdesc.h | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index 56fb646..acd8a3f 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -152,6 +152,14 @@ static inline int irq_balancing_disabled(unsigned int irq)
return desc->status_use_accessors & IRQ_NO_BALANCING_MASK;
}

+static inline int irq_is_percpu(unsigned int irq)
+{
+ struct irq_desc *desc;
+
+ desc = irq_to_desc(irq);
+ return (desc && (desc->status_use_accessors & IRQ_PER_CPU)) ? 1 : 0;
+}
+
static inline void
irq_set_lockdep_class(unsigned int irq, struct lock_class_key *class)
{
--
1.7.9.5


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