From: Ingo Molnar <mingo@elte.hu>

Prepare i386 for dyntick: idle handler callbacks.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 arch/i386/kernel/process.c |    2 ++
 1 file changed, 2 insertions(+)

diff -puN arch/i386/kernel/process.c~dynticks-i386-support-idle-handler-callbacks arch/i386/kernel/process.c
--- a/arch/i386/kernel/process.c~dynticks-i386-support-idle-handler-callbacks
+++ a/arch/i386/kernel/process.c
@@ -212,6 +212,7 @@ void cpu_idle(void)
 
 	/* endless idle loop with no priority at all */
 	while (1) {
+		hrtimer_stop_sched_tick();
 		while (!need_resched()) {
 			void (*idle)(void);
 
@@ -239,6 +240,7 @@ void cpu_idle(void)
 			idle();
 			__exit_idle();
 		}
+		hrtimer_restart_sched_tick();
 		preempt_enable_no_resched();
 		schedule();
 		preempt_disable();
_