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phc2sys: Require either -O or -w on command line 

The default zero offset can lead to misalignment between system clocks or wrong
time to be broadcast to the domain.  Therefore we require setting offset upon
invocation.

Signed-off-by: Libor Pechacek <lpechacek@suse.cz>
master
Libor Pechacek 2013-05-17 10:55:49 +02:00 committed by Richard Cochran
parent 6e4734316f
commit a29b3bc4f9
2 changed files with 11 additions and 4 deletions
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8
phc2sys.8
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@ -109,10 +109,10 @@ minimize the error caused by random delays in scheduling and bus utilization.
The default is 5. The default is 5.
.TP .TP
.BI \-O " offset" .BI \-O " offset"
Specify the offset between the slave and master times in seconds. The default Specify the offset between the slave and master times in seconds. See
is set automatically with the .SM
.B \-w .B TIME SCALE USAGE
option, 0 otherwise. below.
.TP .TP
.BI \-u " summary-updates" .BI \-u " summary-updates"
Specify the number of clock updates included in summary statistics. The Specify the number of clock updates included in summary statistics. The

7
phc2sys.c
View File

@ -684,6 +684,13 @@ int main(int argc, char *argv[])
return -1; return -1;
} }
if (!wait_sync && !forced_sync_offset) {
fprintf(stderr,
"time offset must be specified using -w or -O\n");
usage(progname);
return -1;
}
if (dst_clock.stats_max_count > 0) { if (dst_clock.stats_max_count > 0) {
dst_clock.offset_stats = stats_create(); dst_clock.offset_stats = stats_create();
dst_clock.freq_stats = stats_create(); dst_clock.freq_stats = stats_create();