Commit-ID: 23a9537a6999fce16f06ca61fc6cac52c8fbdc86
Gitweb: http://git.kernel.org/tip/23a9537a6999fce16f06ca61fc6cac52c8fbdc86
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Thu, 21 Feb 2013 22:51:36 +0000
Committer: John Stultz <john.stultz@xxxxxxxxxx>
CommitDate: Fri, 22 Mar 2013 16:19:59 -0700
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@xxxxxxxxxxxxx>
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
---
kernel/time/timekeeping.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 8061ae0..c442a4c 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);
--
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