[PATCH -rt 4/6] Add trace_preempt_*_idle() support for ARM.

[Kevin Hilman <khilman@mvista.com>]

Add trace functions to ARM idle loop and also move the
tick_nohz_restart_sched_tick() after the local_irq_disable() as is
done on x86.

Signed-off-by: Kevin Hilman <khilman@mvista.com>
---
 arch/arm/kernel/process.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Index: linux-2.6/arch/arm/kernel/process.c
===================================================================
--- linux-2.6.orig/arch/arm/kernel/process.c
+++ linux-2.6/arch/arm/kernel/process.c
@@ -165,11 +165,13 @@ void cpu_idle(void)
 		while (!need_resched() && !need_resched_delayed())
 			idle();
 		leds_event(led_idle_end);
-		tick_nohz_restart_sched_tick();
 		local_irq_disable();
+		trace_preempt_exit_idle();
+		tick_nohz_restart_sched_tick();
 		__preempt_enable_no_resched();
 		__schedule();
 		preempt_disable();
+		trace_preempt_enter_idle();
 		local_irq_enable();
 	}
 }

--
-
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