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authorVinayak Kale <vkale@apm.com>2013-12-04 10:09:50 +0000
committerCatalin Marinas <catalin.marinas@arm.com>2013-12-19 17:43:04 +0000
commit7f4a8e7b1943c1fc7e4b08509e308197babdcd5b (patch)
treeb59e6f87ed38c18b74d554117e9b92eee022dddf /include/linux/irqdesc.h
parent67ad461f737d4e68f94db256362e44231cf9cb58 (diff)
downloadop-kernel-dev-7f4a8e7b1943c1fc7e4b08509e308197babdcd5b.zip
op-kernel-dev-7f4a8e7b1943c1fc7e4b08509e308197babdcd5b.tar.gz
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>
Diffstat (limited to 'include/linux/irqdesc.h')
-rw-r--r--include/linux/irqdesc.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index 56fb646..26e2661 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->status_use_accessors & IRQ_PER_CPU;
+}
+
static inline void
irq_set_lockdep_class(unsigned int irq, struct lock_class_key *class)
{
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