Commit 7f4a8e7b authored Dec 04, 2013 by Vinayak Kale Committed by Catalin Marinas Dec 19, 2013

genirq: Add an accessor for IRQ_PER_CPU flag

This patch adds an accessor function for IRQ_PER_CPU flag.
The accessor function is useful to determine whether an IRQ is percpu or not.

This patch is based on an older patch posted by Chris Smith here [1].
There is a minor change w.r.t. Chris's original patch: The accessor function
is renamed as 'irq_is_percpu' instead of 'irq_is_per_cpu'.

[1]: http://lkml.indiana.edu/hypermail/linux/kernel/1207.3/02955.html



Signed-off-by: Chris Smith <chris.smith@st.com>
Signed-off-by: Vinayak Kale <vkale@apm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

parent 67ad461f

include/linux/irqdesc.h

+8 −0

Original line number	Diff line number	Diff line
		@@ -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->status_use_accessors & IRQ_PER_CPU;
		}

		static inline void
		irq_set_lockdep_class(unsigned int irq, struct lock_class_key *class)
		{