[PATCH v7 02/14] ARM: smp: add interrupt handler for local timers
From: Marc Zyngier <hidden>
Date: 2011-06-13 11:21:47
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Provide a "normal" interrupt handler for local timers. It is expected that most timer implementations will use this handler unless they have more specific requirements. Signed-off-by: Marc Zyngier <redacted> --- arch/arm/include/asm/localtimer.h | 6 ++++++ arch/arm/kernel/smp.c | 12 ++++++++++++ 2 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/arch/arm/include/asm/localtimer.h b/arch/arm/include/asm/localtimer.h
index 080d74f..bef44b3 100644
--- a/arch/arm/include/asm/localtimer.h
+++ b/arch/arm/include/asm/localtimer.h@@ -10,6 +10,8 @@ #ifndef __ASM_ARM_LOCALTIMER_H #define __ASM_ARM_LOCALTIMER_H +#include <linux/interrupt.h> + struct clock_event_device; /*
@@ -22,6 +24,10 @@ void percpu_timer_setup(void); */ asmlinkage void do_local_timer(struct pt_regs *); +/* + * Per-cpu timer IRQ handler + */ +irqreturn_t percpu_timer_handler(int irq, void *dev_id); #ifdef CONFIG_LOCAL_TIMERS
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 344e52b..daa7088 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c@@ -460,6 +460,18 @@ asmlinkage void __exception_irq_entry do_local_timer(struct pt_regs *regs) set_irq_regs(old_regs); } +irqreturn_t percpu_timer_handler(int irq, void *dev_id) +{ + struct clock_event_device *evt = dev_id; + + if (local_timer_ack()) { + evt->event_handler(evt); + return IRQ_HANDLED; + } + + return IRQ_NONE; +} + void show_local_irqs(struct seq_file *p, int prec) { unsigned int cpu;
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1.7.0.4