srv0srv.c:

  Make SHOW INNODB STATUS aware which trx's are waiting because of innodb_thread_concurrency exceeded

innobase/srv/srv0srv.c

@@ -1814,8 +1814,12 @@ srv_conc_enter_innodb(
 	/* Go to wait for the event; when a thread leaves InnoDB it will
 	release this thread */
 
+	trx->op_info = "waiting in InnoDB queue";
+
 	os_event_wait(slot->event);
 
+	trx->op_info = "";
+
 	os_fast_mutex_lock(&srv_conc_mutex);
 
 	srv_conc_n_waiting_threads--;