commit 92d23f703c608fcb2c8edd74a3fd0f4031e18606
author Ron <ron@voicetronix.com> Fri May 08 22:54:49 2009 +0930
committer Ingo Molnar <mingo@elte.hu> Sat May 09 10:08:19 2009 +0200
tree ecd2e7f94fea20188eb75cabbcd48a7f7ab79dbc
parent 091bf7624d1c90cec9e578a18529f615213ff847

sched: Fix fallback sched_clock()'s offset when using jiffies

Account for the initial offset to the jiffy count.

[ Impact: fix printk timestamps on architectures using fallback sched_clock() ]

Signed-off-by: Ron Lee <ron@debian.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

kernel/sched_clock.c

diff --git a/kernel/sched_clock.c b/kernel/sched_clock.c
index 819f17a..e1d16c9 100644
--- a/kernel/sched_clock.c
+++ b/kernel/sched_clock.c
@@ -38,7 +38,8 @@
  */
 unsigned long long __attribute__((weak)) sched_clock(void)
 {
-	return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ);
+	return (unsigned long long)(jiffies - INITIAL_JIFFIES)
+					* (NSEC_PER_SEC / HZ);
 }
 
 static __read_mostly int sched_clock_running;