From mboxrd@z Thu Jan 1 00:00:00 1970 From: marc.zyngier@arm.com (Marc Zyngier) Date: Fri, 3 Jun 2011 15:15:46 +0100 Subject: [PATCH v6 02/14] ARM: smp: add interrupt handler for local timers In-Reply-To: <1307110558-29710-1-git-send-email-marc.zyngier@arm.com> References: <1307110558-29710-1-git-send-email-marc.zyngier@arm.com> Message-ID: <1307110558-29710-3-git-send-email-marc.zyngier@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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 + 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; -- 1.7.0.4