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[2/2] ARM: smp: Add a localtimer handler callable from C code

Message ID 1317545191-22976-3-git-send-email-shawn.guo@linaro.org
State New
Headers show

Commit Message

Shawn Guo Oct. 2, 2011, 8:46 a.m. UTC 
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>
---
 arch/arm/include/asm/localtimer.h |    4 ++++
 arch/arm/kernel/smp.c             |    5 +++++
 2 files changed, 9 insertions(+), 0 deletions(-)
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Patch

diff --git a/arch/arm/include/asm/localtimer.h b/arch/arm/include/asm/localtimer.h
index 080d74f..3306f28 100644
--- 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
 
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 2e49f18..0949007 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -480,6 +480,11 @@  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();