timekeeping: Cache optimize struct timekeeper

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struct timekeeper is quite badly sorted for the hot readout path. Most
time access functions need to load two cache lines.

Rearrange it so ktime_get() and getnstimeofday() are happy with a
single cache line.

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

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Thomas Gleixner 2014-07-16 21:04:07 +00:00 • committed by John Stultz

parent c905fae43f

commit 3fdb14fd1d

2 changed files with 143 additions and 126 deletions

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86

include/linux/timekeeper_internal.h

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185

kernel/time/timekeeping.c

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