[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>

diff --git a/include/linux/timex.h b/include/linux/timex.h
index b5f297e..7715b4c 100644 (file)
--- a/include/linux/timex.h
+++ b/include/linux/timex.h
@@ -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 */

diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index 65223b7..af7563f 100644 (file)
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -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 */