From cc096d68fd9848cc0bd95719329184cc8bd14b2d Mon Sep 17 00:00:00 2001 From: Vinayak Kale Date: Wed, 4 Dec 2013 10:09:50 +0000 Subject: [PATCH] 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 Signed-off-by: Vinayak Kale Acked-by: Will Deacon Reviewed-by: Thomas Gleixner Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas (cherry picked from commit 7f4a8e7b1943c1fc7e4b08509e308197babdcd5b) Signed-off-by: Mark Brown --- include/linux/irqdesc.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 623325e2ff97..f4101f01286b 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -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_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) { -- 2.34.1