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[PATCH] ntp: remove time_tolerance 

time_tolerance isn't changed at all in the kernel, so simply remove it, this
simplifies the next patch, as it avoids a number of conversions.

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>
hifive-unleashed-5.1
Roman Zippel 2006-09-30 23:28:26 -07:00 committed by Linus Torvalds
parent 8f807f8d21
commit 97eebe138c
2 changed files with 4 additions and 6 deletions
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1
include/linux/timex.h
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@ -208,7 +208,6 @@ extern int time_state; /* clock status */
extern int time_status; /* clock synchronization status bits */
extern long time_offset; /* time adjustment (us) */
extern long time_constant; /* pll time constant */
extern long time_tolerance; /* frequency tolerance (ppm) */
extern long time_precision; /* clock precision (us) */
extern long time_maxerror; /* maximum error */
extern long time_esterror; /* estimated error */

9
kernel/time/ntp.c
View File

@ -34,7 +34,6 @@ int time_state = TIME_OK; /* clock synchronization status */
int time_status = STA_UNSYNC; /* clock status bits */
long time_offset; /* time adjustment (ns) */
long time_constant = 2; /* pll time constant */
long time_tolerance = MAXFREQ; /* frequency tolerance (ppm) */
long time_precision = 1; /* clock precision (us) */
long time_maxerror = NTP_PHASE_LIMIT; /* maximum error (us) */
long time_esterror = NTP_PHASE_LIMIT; /* estimated error (us) */
@ -87,7 +86,7 @@ void second_overflow(void)
long time_adj;
/* Bump the maxerror field */
time_maxerror += time_tolerance >> SHIFT_USEC;
time_maxerror += MAXFREQ >> SHIFT_USEC;
if (time_maxerror > NTP_PHASE_LIMIT) {
time_maxerror = NTP_PHASE_LIMIT;
time_status |= STA_UNSYNC;
@ -313,8 +312,8 @@ int do_adjtimex(struct timex *txc)
} else /* calibration interval too long (p. 12) */
result = TIME_ERROR;
}
time_freq = min(time_freq, time_tolerance);
time_freq = max(time_freq, -time_tolerance);
time_freq = min(time_freq, MAXFREQ);
time_freq = max(time_freq, -MAXFREQ);
time_offset = (time_offset * NSEC_PER_USEC / HZ) << SHIFT_UPDATE;
} /* STA_PLL */
} /* txc->modes & ADJ_OFFSET */
@ -337,7 +336,7 @@ leave: if ((time_status & (STA_UNSYNC|STA_CLOCKERR)) != 0)
txc->status = time_status;
txc->constant = time_constant;
txc->precision = time_precision;
txc->tolerance = time_tolerance;
txc->tolerance = MAXFREQ;
txc->tick = tick_usec;
/* PPS is not implemented, so these are zero */