ntp: increase time_freq resolution

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This changes time_freq to a 64bit value and makes it static (the only outside
user had no real need to modify it).  Intermediate values were already 64bit,
so the change isn't that big, but it saves a little in shifts by replacing
SHIFT_NSEC with TICK_LENGTH_SHIFT.  PPM_SCALE is then used to convert between
user space and kernel space representation.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Roman Zippel 2008-05-01 04:34:34 -07:00 • committed by Linus Torvalds

parent eea83d896e

commit 074b3b8794

3 changed files with 21 additions and 22 deletions

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2

arch/powerpc/kernel/time.c

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11

include/linux/timex.h

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30

kernel/time/ntp.c

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