timekeeping: Calc stuff once

Calculate the cycle interval shifted value once. No functional change,
just makes the code more readable.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 8061ae0be7bd..c442a4ccccc9 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -1250,15 +1250,16 @@ static inline void accumulate_nsecs_to_secs(struct timekeeper *tk)
 static cycle_t logarithmic_accumulation(struct timekeeper *tk, cycle_t offset,
                                                 u32 shift)
 {
+        cycle_t interval = tk->cycle_interval << shift;
         u64 raw_nsecs;
 
         /* If the offset is smaller then a shifted interval, do nothing */
-        if (offset < tk->cycle_interval<<shift)
+        if (offset < interval)
                 return offset;
 
         /* Accumulate one shifted interval */
-        offset -= tk->cycle_interval << shift;
-        tk->clock->cycle_last += tk->cycle_interval << shift;
+        offset -= interval;
+        tk->clock->cycle_last += interval;
 
         tk->xtime_nsec += tk->xtime_interval << shift;
         accumulate_nsecs_to_secs(tk);