---

yaml --- r: 166121 b: refs/heads/master c: a2ca00e h: refs/heads/master i: 166119: fbdc5b9 v: v3
git-mirror · Sep 18, 2009 · 6548f88 · 6548f88
1 parent 5a894bb
commit 6548f88
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Showing 2 changed files with 16 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6be2a0cacc1ed6899a53172e2e9b7a3587be0bea
+refs/heads/master: a2ca00ea9398265a26eabb358bba83c8b75c463d
diff --git a/trunk/arch/arm/mach-u300/timer.c b/trunk/arch/arm/mach-u300/timer.c
@@ -346,6 +346,21 @@ static struct clocksource clocksource_u300_1mhz = {
 	.flags          = CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
+/*
+ * Override the global weak sched_clock symbol with this
+ * local implementation which uses the clocksource to get some
+ * better resolution when scheduling the kernel. We accept that
+ * this wraps around for now, since it is just a relative time
+ * stamp. (Inspired by OMAP implementation.)
+ */
+unsigned long long notrace sched_clock(void)
+{
+	return clocksource_cyc2ns(clocksource_u300_1mhz.read(
+				  &clocksource_u300_1mhz),
+				  clocksource_u300_1mhz.mult,
+				  clocksource_u300_1mhz.shift);
+}
+
 
 /*
  * This sets up the system timers, clock source and clock event.