+ /* Event filter expression */
+ ret = lttng_event_get_filter_string(event, &filter_expression);
+
+ if (ret) {
+ goto end;
+ }
+
+ if (filter_expression) {
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_filter_expression,
+ filter_expression);
+
+ if (ret) {
+ goto end;
+ }
+ }
+