diff options
| author | Roman Zippel <zippel@linux-m68k.org> | 2006-09-30 23:28:23 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-01 00:39:26 -0700 |
| commit | ab8783b688f33c40ed7b37b814a4a1e7d341ce11 (patch) | |
| tree | 0c0813bc08f9532fe48135126b4809285de39007 /kernel | |
| parent | b0ee75561beadc4db4d9a899c8ef4a7db50aa0ab (diff) | |
[PATCH] ntp: add time_adj to tick length
This makes time_adj local to second_overflow() and integrates it into the tick
length instead of adding it everytime.
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Cc: john stultz <johnstul@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/time/ntp.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c index 77137bec2ae..c09628d6b84 100644 --- a/kernel/time/ntp.c +++ b/kernel/time/ntp.c @@ -39,7 +39,6 @@ long time_maxerror = NTP_PHASE_LIMIT; /* maximum error (us) */ long time_esterror = NTP_PHASE_LIMIT; /* estimated error (us) */ long time_freq = (((NSEC_PER_SEC + HZ/2) % HZ - HZ/2) << SHIFT_USEC) / NSEC_PER_USEC; /* frequency offset (scaled ppm)*/ -static long time_adj; /* tick adjust (scaled 1 / HZ) */ long time_reftime; /* time at last adjustment (s) */ long time_adjust; long time_next_adjust; @@ -84,7 +83,7 @@ void ntp_update_frequency(void) */ void second_overflow(void) { - long ltemp; + long ltemp, time_adj; /* Bump the maxerror field */ time_maxerror += time_tolerance >> SHIFT_USEC; @@ -189,6 +188,7 @@ void second_overflow(void) time_adj += shift_right(time_adj, 6) + shift_right(time_adj, 7); #endif tick_length = tick_length_base; + tick_length += (s64)time_adj << (TICK_LENGTH_SHIFT - (SHIFT_SCALE - 10)); } /* @@ -245,11 +245,9 @@ u64 current_tick_length(void) u64 ret; /* calculate the finest interval NTP will allow. - * ie: nanosecond value shifted by (SHIFT_SCALE - 10) */ ret = tick_length; ret += (u64)(adjtime_adjustment() * 1000) << TICK_LENGTH_SHIFT; - ret += (s64)time_adj << (TICK_LENGTH_SHIFT - (SHIFT_SCALE - 10)); return ret; } |