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 <[email protected]> Cc: Andrew Morton <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
mna · May 9, 2009 · 92d23f7 · 92d23f7
1 parent 091bf76
commit 92d23f7
Showing 1 changed file with 2 additions and 1 deletion.
diff --git 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;