| From 3a88e40dec05b0d5d376ba18a7f6833b3f6d7be5 Mon Sep 17 00:00:00 2001 |
| From: Shawn Guo <shawn.guo@linaro.org> |
| Date: Thu, 6 Oct 2011 15:19:14 +0100 |
| Subject: ARM: 7124/1: smp: Add a localtimer handler callable from C code |
| |
| In order to be able to handle localtimer directly from C code instead of |
| assembly code, introduce handle_local_timer(), which is modeled after |
| handle_IRQ(). |
| |
| Signed-off-by: Shawn Guo <shawn.guo@linaro.org> |
| Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> |
| (cherry picked from commit 0af8aa0069e43f90d59666510342c05e97d8c4b8) |
| |
| Signed-off-by: Simon Horman <horms@verge.net.au> |
| --- |
| arch/arm/include/asm/localtimer.h | 4 ++++ |
| arch/arm/kernel/smp.c | 5 +++++ |
| 2 files changed, 9 insertions(+) |
| |
| --- a/arch/arm/include/asm/localtimer.h |
| +++ b/arch/arm/include/asm/localtimer.h |
| @@ -22,6 +22,10 @@ void percpu_timer_setup(void); |
| */ |
| asmlinkage void do_local_timer(struct pt_regs *); |
| |
| +/* |
| + * Called from C code |
| + */ |
| +void handle_local_timer(struct pt_regs *); |
| |
| #ifdef CONFIG_LOCAL_TIMERS |
| |
| --- a/arch/arm/kernel/smp.c |
| +++ b/arch/arm/kernel/smp.c |
| @@ -477,6 +477,11 @@ static void ipi_timer(void) |
| #ifdef CONFIG_LOCAL_TIMERS |
| asmlinkage void __exception_irq_entry do_local_timer(struct pt_regs *regs) |
| { |
| + handle_local_timer(regs); |
| +} |
| + |
| +void handle_local_timer(struct pt_regs *regs) |
| +{ |
| struct pt_regs *old_regs = set_irq_regs(regs); |
| int cpu = smp_processor_id(); |
| |
