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| author | Vinayak Kale <vkale@apm.com> | 2013-12-04 10:09:50 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2013-12-19 17:43:04 +0000 |
| commit | 7f4a8e7b1943c1fc7e4b08509e308197babdcd5b (patch) | |
| tree | b59e6f87ed38c18b74d554117e9b92eee022dddf /include/linux/irqdesc.h | |
| parent | 67ad461f737d4e68f94db256362e44231cf9cb58 (diff) | |
| download | lwn-7f4a8e7b1943c1fc7e4b08509e308197babdcd5b.tar.gz lwn-7f4a8e7b1943c1fc7e4b08509e308197babdcd5b.zip | |
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.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 56fb646909dc..26e2661d3935 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) { |