diff options
Diffstat (limited to 'include/linux/timex.h')
-rw-r--r-- | include/linux/timex.h | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/include/linux/timex.h b/include/linux/timex.h index b7ca1204e42a..82dc9ae79d37 100644 --- a/include/linux/timex.h +++ b/include/linux/timex.h | |||
@@ -97,38 +97,11 @@ | |||
97 | 97 | ||
98 | #define MAXPHASE 512000L /* max phase error (us) */ | 98 | #define MAXPHASE 512000L /* max phase error (us) */ |
99 | #define MAXFREQ (512L << SHIFT_USEC) /* max frequency error (ppm) */ | 99 | #define MAXFREQ (512L << SHIFT_USEC) /* max frequency error (ppm) */ |
100 | #define MAXTIME (200L << PPS_AVG) /* max PPS error (jitter) (200 us) */ | ||
101 | #define MINSEC 16L /* min interval between updates (s) */ | 100 | #define MINSEC 16L /* min interval between updates (s) */ |
102 | #define MAXSEC 1200L /* max interval between updates (s) */ | 101 | #define MAXSEC 1200L /* max interval between updates (s) */ |
103 | #define NTP_PHASE_LIMIT (MAXPHASE << 5) /* beyond max. dispersion */ | 102 | #define NTP_PHASE_LIMIT (MAXPHASE << 5) /* beyond max. dispersion */ |
104 | 103 | ||
105 | /* | 104 | /* |
106 | * The following defines are used only if a pulse-per-second (PPS) | ||
107 | * signal is available and connected via a modem control lead, such as | ||
108 | * produced by the optional ppsclock feature incorporated in the Sun | ||
109 | * asynch driver. They establish the design parameters of the frequency- | ||
110 | * lock loop used to discipline the CPU clock oscillator to the PPS | ||
111 | * signal. | ||
112 | * | ||
113 | * PPS_AVG is the averaging factor for the frequency loop, as well as | ||
114 | * the time and frequency dispersion. | ||
115 | * | ||
116 | * PPS_SHIFT and PPS_SHIFTMAX specify the minimum and maximum | ||
117 | * calibration intervals, respectively, in seconds as a power of two. | ||
118 | * | ||
119 | * PPS_VALID is the maximum interval before the PPS signal is considered | ||
120 | * invalid and protocol updates used directly instead. | ||
121 | * | ||
122 | * MAXGLITCH is the maximum interval before a time offset of more than | ||
123 | * MAXTIME is believed. | ||
124 | */ | ||
125 | #define PPS_AVG 2 /* pps averaging constant (shift) */ | ||
126 | #define PPS_SHIFT 2 /* min interval duration (s) (shift) */ | ||
127 | #define PPS_SHIFTMAX 8 /* max interval duration (s) (shift) */ | ||
128 | #define PPS_VALID 120 /* pps signal watchdog max (s) */ | ||
129 | #define MAXGLITCH 30 /* pps signal glitch max (s) */ | ||
130 | |||
131 | /* | ||
132 | * syscall interface - used (mainly by NTP daemon) | 105 | * syscall interface - used (mainly by NTP daemon) |
133 | * to discipline kernel clock oscillator | 106 | * to discipline kernel clock oscillator |
134 | */ | 107 | */ |
@@ -246,20 +219,6 @@ extern long time_reftime; /* time at last adjustment (s) */ | |||
246 | extern long time_adjust; /* The amount of adjtime left */ | 219 | extern long time_adjust; /* The amount of adjtime left */ |
247 | extern long time_next_adjust; /* Value for time_adjust at next tick */ | 220 | extern long time_next_adjust; /* Value for time_adjust at next tick */ |
248 | 221 | ||
249 | /* interface variables pps->timer interrupt */ | ||
250 | extern long pps_offset; /* pps time offset (us) */ | ||
251 | extern long pps_jitter; /* time dispersion (jitter) (us) */ | ||
252 | extern long pps_freq; /* frequency offset (scaled ppm) */ | ||
253 | extern long pps_stabil; /* frequency dispersion (scaled ppm) */ | ||
254 | extern long pps_valid; /* pps signal watchdog counter */ | ||
255 | |||
256 | /* interface variables pps->adjtimex */ | ||
257 | extern int pps_shift; /* interval duration (s) (shift) */ | ||
258 | extern long pps_jitcnt; /* jitter limit exceeded */ | ||
259 | extern long pps_calcnt; /* calibration intervals */ | ||
260 | extern long pps_errcnt; /* calibration errors */ | ||
261 | extern long pps_stbcnt; /* stability limit exceeded */ | ||
262 | |||
263 | /** | 222 | /** |
264 | * ntp_clear - Clears the NTP state variables | 223 | * ntp_clear - Clears the NTP state variables |
265 | * | 224 | * |