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genirq: Provide an accessor for IRQ_PER_CPU flag

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Adds an accessor function, irq_is_per_cpu(), for the flag IRQ_PER_CPU.

This is useful if you have an IRQ that is per-cpu in some hardware
implementations, and not in others (example: ARM PMU Interrupts), and
you want to handle both cases.

Change-Id: Ic176ee5b8f9a830c1db35cb939ec659a4cf3f938
Signed-off-by: Chris Smith <chris.smith@st.com>
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
This commit is contained in:
Chris Smith 2012-08-10 13:43:16 -07:00 committed by Stephen Boyd
parent 9900356726
commit a8d436d5bb
1 changed files with 8 additions and 0 deletions
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8
include/linux/irqdesc.h
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@ -154,6 +154,14 @@ static inline int irq_balancing_disabled(unsigned int irq)
return desc->status_use_accessors & IRQ_NO_BALANCING_MASK;
}
static inline int irq_is_per_cpu(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)
{