clock offset: print negative value in metadata

[lttng-modules.git] / lttng-events.c

diff --git a/lttng-events.c b/lttng-events.c
index bd6f44d977dba95e36c769f828b60e4fb9502c1f..e1364dd5fbd9b6692bf5055f3be07048b1c951b7 100644 (file)
--- a/lttng-events.c
+++ b/lttng-events.c
@@ -2027,7 +2027,7 @@ int _lttng_event_header_declare(struct lttng_session *session)
  * the REALTIME clock to 0 after boot.
  */
 static
-uint64_t measure_clock_offset(void)
+int64_t measure_clock_offset(void)
 {
        uint64_t monotonic_avg, monotonic[2], realtime;
        uint64_t tcf = trace_clock_freq();
@@ -2053,8 +2053,6 @@ uint64_t measure_clock_offset(void)
                realtime += n;
        }
        offset = (int64_t) realtime - monotonic_avg;
-       if (offset < 0)
-               return 0;
        return offset;
 }
 
@@ -2166,11 +2164,11 @@ int _lttng_session_metadata_statedump(struct lttng_session *session)
                "       description = \"%s\";\n"
                "       freq = %llu; /* Frequency, in Hz */\n"
                "       /* clock value offset from Epoch is: offset * (1/freq) */\n"
-               "       offset = %llu;\n"
+               "       offset = %lld;\n"
                "};\n\n",
                trace_clock_description(),
                (unsigned long long) trace_clock_freq(),
-               (unsigned long long) measure_clock_offset()
+               (long long) measure_clock_offset()
                );
        if (ret)
                goto end;