Add a short description of the tracing options inside the config files.

srsenb/enb.conf.example

@@ -294,6 +294,8 @@ enable = false
 # metrics_period_secs:  Sets the period at which metrics are requested from the eNB. 
 # metrics_csv_enable:   Write eNB metrics to CSV file.
 # metrics_csv_filename: File path to use for CSV metrics.
+# tracing_enable:       Write source code tracing information to a file.
+# tracing_filename:     File path to use for tracing information.
 # pregenerate_signals:  Pregenerate uplink signals after attach. Improves CPU performance.
 # tx_amplitude:         Transmit amplitude factor (set 0-1 to reduce PAPR)
 # rrc_inactivity_timer  Inactivity timeout used to remove UE context from RRC (in milliseconds).

srsue/src/main.cc

@@ -667,7 +667,7 @@ int main(int argc, char* argv[])
 
   srslte::check_scaling_governor(args.rf.device_name);
 
-  // Create UE instance
+  // Create UE instance.
   srsue::ue ue;
   if (ue.init(args, &log_wrapper)) {
     ue.stop();

srsue/ue.conf.example

@@ -377,6 +377,10 @@ enable = false
 #
 # metrics_csv_filename: File path to use for CSV metrics.
 #
+# tracing_enable:       Write source code tracing information to a file.
+#
+# tracing_filename:     File path to use for tracing information.
+#
 # have_tti_time_stats:  Calculate TTI execution statistics using system clock
 #
 #####################################################################