timekeeping: Add xtime_shift and ntp_error_shift to struct timekeeper

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The xtime_nsec value in the timekeeper structure is shifted by a few
bits to improve precision. This happens to be the same value as the
clock->shift. To improve readability add xtime_shift to the timekeeper
and use it instead of the clock->shift. Likewise add ntp_error_shift
and replace all (NTP_SCALE_SHIFT - clock->shift) expressions.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Daniel Walker <dwalker@fifo99.com>
LKML-Reference: <20090814134809.871899606@de.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Martin Schwidefsky 2009-08-14 15:47:27 +02:00 • committed by Thomas Gleixner

parent 155ec60226

commit 23ce72117c

1 changed files with 19 additions and 14 deletions

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kernel/time/timekeeping.c

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