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[PATCH] Time: Let user request precision from current_tick_length()

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Change the current_tick_length() function so it takes an argument which
specifies how much precision to return in shifted nanoseconds.  This provides
a simple way to convert between NTPs internal nanoseconds shifted by
(SHIFT_SCALE - 10) to other shifted nanosecond units that are used by the
clocksource abstraction.

Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
john stultz
2006-06-26 00:25:07 -07:00
committed by Linus Torvalds
parent ad596171ed
commit 260a42309b
3 changed files with 19 additions and 6 deletions
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2
arch/powerpc/kernel/time.c
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@@ -534,7 +534,7 @@ static __inline__ void timer_recalc_offset(u64 cur_tb)
if (__USE_RTC())
return;
tlen = current_tick_length();
tlen = current_tick_length(SHIFT_SCALE - 10);
offset = cur_tb - do_gtod.varp->tb_orig_stamp;
if (tlen == last_tick_len && offset < 0x80000000u)
return;