Imported linux-2.6.27.39 suse/xen patches.

[ipfire-2.x.git] / src / patches / suse-2.6.27.39 / patches.arch / x86-mce-use-round_jiffies-instead-round_jiffies_relative

From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Date: Wed, 11 Mar 2009 01:14:26 +0000 (+0900)
Subject: x86, mce: use round_jiffies() instead round_jiffies_relative()
Patch-mainline: 2.6.30-rc3
Git-commit: 5490fa96735ce0e2af270c0868987d644b9a38ec
References: bnc#507557

x86, mce: use round_jiffies() instead round_jiffies_relative()

Impact: saving power _very_ little

round_jiffies() round up absolute jiffies to full second.
round_jiffies_relative() round up relative jiffies to full second.

The "t->expires" is absolute jiffies. Then, round_jiffies() should be
used instead round_jiffies_relative().

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Jeff Mahoney <jeffm@suse.com>

---
 arch/x86/kernel/cpu/mcheck/mce_64.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/x86/kernel/cpu/mcheck/mce_64.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_64.c
@@ -509,7 +509,7 @@ static void mce_init_timer(void)
 	if (!next_interval)
 		return;
 	setup_timer(t, mcheck_timer, smp_processor_id());
-	t->expires = round_jiffies_relative(jiffies + next_interval);
+	t->expires = round_jiffies(jiffies + next_interval);
 	add_timer(t);
 }
 
@@ -912,7 +912,7 @@ static int __cpuinit mce_cpu_callback(st
 		break;
 	case CPU_DOWN_FAILED:
 	case CPU_DOWN_FAILED_FROZEN:
-		t->expires = round_jiffies_relative(jiffies + next_interval);
+		t->expires = round_jiffies(jiffies + next_interval);
 		add_timer_on(t, cpu);
 		break;
 	}