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-rw-r--r--kernel/time/jiffies.c21
1 files changed, 1 insertions, 20 deletions
diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c
index 01935aafdb46..bc4db9e5ab70 100644
--- a/kernel/time/jiffies.c
+++ b/kernel/time/jiffies.c
@@ -10,28 +10,9 @@
#include <linux/init.h>
#include "timekeeping.h"
+#include "tick-internal.h"
-/* Since jiffies uses a simple TICK_NSEC multiplier
- * conversion, the .shift value could be zero. However
- * this would make NTP adjustments impossible as they are
- * in units of 1/2^.shift. Thus we use JIFFIES_SHIFT to
- * shift both the nominator and denominator the same
- * amount, and give ntp adjustments in units of 1/2^8
- *
- * The value 8 is somewhat carefully chosen, as anything
- * larger can result in overflows. TICK_NSEC grows as HZ
- * shrinks, so values greater than 8 overflow 32bits when
- * HZ=100.
- */
-#if HZ < 34
-#define JIFFIES_SHIFT 6
-#elif HZ < 67
-#define JIFFIES_SHIFT 7
-#else
-#define JIFFIES_SHIFT 8
-#endif
-
static u64 jiffies_read(struct clocksource *cs)
{
return (u64) jiffies;