From fbad1ea94159a71bc0f68b00e57ae803606af9fb Mon Sep 17 00:00:00 2001
From: Torben Hohn <torbenh@gmx.de>
Date: Thu, 27 Jan 2011 15:59:00 +0100
Subject: time: Move get_jiffies_64 to kernel/time/jiffies.c

Move the jiffies access functions to the jiffies clocksource code.

[ tglx: Add missing include ]

Signed-off-by: Torben Hohn <torbenh@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: johnstul@us.ibm.com
Cc: yong.zhang0@gmail.com
Cc: hch@infradead.org
LKML-Reference: <20110127145900.23248.73352.stgit@localhost>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 kernel/time/jiffies.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'kernel/time/jiffies.c')

diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c
index 5404a845690..2fbc2074479 100644
--- a/kernel/time/jiffies.c
+++ b/kernel/time/jiffies.c
@@ -22,6 +22,7 @@
 ************************************************************************/
 #include <linux/clocksource.h>
 #include <linux/jiffies.h>
+#include <linux/module.h>
 #include <linux/init.h>
 
 /* The Jiffies based clocksource is the lowest common
@@ -64,6 +65,23 @@ struct clocksource clocksource_jiffies = {
 	.shift		= JIFFIES_SHIFT,
 };
 
+#if (BITS_PER_LONG < 64)
+u64 get_jiffies_64(void)
+{
+	unsigned long seq;
+	u64 ret;
+
+	do {
+		seq = read_seqbegin(&xtime_lock);
+		ret = jiffies_64;
+	} while (read_seqretry(&xtime_lock, seq));
+	return ret;
+}
+EXPORT_SYMBOL(get_jiffies_64);
+#endif
+
+EXPORT_SYMBOL(jiffies);
+
 static int __init init_jiffies_clocksource(void)
 {
 	return clocksource_register(&clocksource_jiffies);
-- 
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