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Allow changing tick up to max_tick_bias

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This commit is contained in:
Miroslav Lichvar
2011-04-12 16:40:22 +02:00
parent 28710e0449
commit 2a0c35646c
1 changed files with 16 additions and 6 deletions
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22
sys_linux.c
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@@ -493,14 +493,22 @@ initiate_slew(void)
max_allowed_tick = nominal_tick + max_tick_bias; max_allowed_tick = nominal_tick + max_tick_bias;
if (offset_register > 0) { if (offset_register > 0) {
if (current_tick <= min_allowed_tick) {
return;
}
slewing_tick = current_tick - slew_delta_tick; slewing_tick = current_tick - slew_delta_tick;
if (slewing_tick <= min_allowed_tick) { if (slewing_tick < min_allowed_tick) {
slewing_tick = min_allowed_tick + 1; slewing_tick = min_allowed_tick;
} }
} else { } else {
if (current_tick >= max_allowed_tick) {
return;
}
slewing_tick = current_tick + slew_delta_tick; slewing_tick = current_tick + slew_delta_tick;
if (slewing_tick >= max_allowed_tick) { if (slewing_tick > max_allowed_tick) {
slewing_tick = max_allowed_tick - 1; slewing_tick = max_allowed_tick;
} }
} }
@@ -509,6 +517,8 @@ initiate_slew(void)
delta_total_tick = (double) tick_adjust / 1.0e6; delta_total_tick = (double) tick_adjust / 1.0e6;
dseconds = - offset_register * (current_total_tick + delta_total_tick) / delta_total_tick; dseconds = - offset_register * (current_total_tick + delta_total_tick) / delta_total_tick;
assert(dseconds > 0.0);
/* Now set the thing off */ /* Now set the thing off */
if (gettimeofday(&T0, NULL) < 0) { if (gettimeofday(&T0, NULL) < 0) {
LOG_FATAL(LOGF_SysLinux, "gettimeofday() failed"); LOG_FATAL(LOGF_SysLinux, "gettimeofday() failed");
@@ -662,8 +672,8 @@ set_frequency(double freq_ppm)
scaled_freq = -freq_scale * required_freq; scaled_freq = -freq_scale * required_freq;
} }
min_allowed_tick = nominal_tick - max_tick_bias + 5; min_allowed_tick = nominal_tick - max_tick_bias;
max_allowed_tick = nominal_tick + max_tick_bias - 5; max_allowed_tick = nominal_tick + max_tick_bias;
if (required_tick < min_allowed_tick || required_tick > max_allowed_tick) { if (required_tick < min_allowed_tick || required_tick > max_allowed_tick) {
LOG(LOGS_WARN, LOGF_SysLinux, "Required tick %ld outside allowed range (%ld .. %ld)", required_tick, min_allowed_tick, max_allowed_tick); LOG(LOGS_WARN, LOGF_SysLinux, "Required tick %ld outside allowed range (%ld .. %ld)", required_tick, min_allowed_tick, max_allowed_tick);