-#define start_trace(port, interface, caller, dialing, direction, category, serial, name) _start_trace(__FUNCTION__, __LINE__, port, interface, caller, dialing, direction, category, serial, name)
-#define add_trace(name, sub, fmt, arg...) _add_trace(__FUNCTION__, __LINE__, name, sub, fmt, ## arg)
-#define end_trace() _end_trace(__FUNCTION__, __LINE__)
+#define start_trace(port, interface, caller, dialing, direction, category, serial, name) _start_trace(__FILE__, __LINE__, port, interface, caller, dialing, direction, category, serial, name)
+#define add_trace(name, sub, fmt, arg...) _add_trace(__FILE__, __LINE__, name, sub, fmt, ## arg)
+#define end_trace() _end_trace(__FILE__, __LINE__)