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authorRon <ron@voicetronix.com>2009-05-08 22:54:49 +0930
committerIngo Molnar <mingo@elte.hu>2009-05-09 10:08:19 +0200
commit92d23f703c608fcb2c8edd74a3fd0f4031e18606 (patch)
treeecd2e7f94fea20188eb75cabbcd48a7f7ab79dbc /kernel
parent091bf7624d1c90cec9e578a18529f615213ff847 (diff)
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>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched_clock.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/sched_clock.c b/kernel/sched_clock.c
index 819f17ac796..e1d16c9a768 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;