Messages in this thread Patch in this message | | | Date | Thu, 21 Feb 2013 22:51:36 -0000 | From | Thomas Gleixner <> | Subject | [RFC patch 1/8] timekeeping: Calc stuff once |
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Calculate the cycle interval shifted value once. No functional change, just makes the code more readable.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- kernel/time/timekeeping.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
Index: linux-2.6/kernel/time/timekeeping.c =================================================================== --- linux-2.6.orig/kernel/time/timekeeping.c +++ linux-2.6/kernel/time/timekeeping.c @@ -1102,15 +1102,16 @@ static inline void accumulate_nsecs_to_s 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);
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