From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 16 Feb 2007 09:28:07 +0000 (-0800)
Subject: [PATCH] i386 prepare for dyntick
X-Git-Tag: v2.6.21-rc1~126
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=741673473a5b26497d5390f38d478362e27e22ad;p=platform%2Fkernel%2Flinux-exynos.git

[PATCH] i386 prepare for dyntick

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@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c
index 7845d48..bea304d 100644
--- a/arch/i386/kernel/process.c
+++ b/arch/i386/kernel/process.c
@@ -38,6 +38,7 @@
 #include <linux/ptrace.h>
 #include <linux/random.h>
 #include <linux/personality.h>
+#include <linux/tick.h>
 
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
@@ -211,6 +212,7 @@ void cpu_idle(void)
 
 	/* endless idle loop with no priority at all */
 	while (1) {
+		tick_nohz_stop_sched_tick();
 		while (!need_resched()) {
 			void (*idle)(void);
 
@@ -238,6 +240,7 @@ void cpu_idle(void)
 			idle();
 			__exit_idle();
 		}
+		tick_nohz_restart_sched_tick();
 		preempt_enable_no_resched();
 		schedule();
 		preempt_disable();