return 0;
 }
 
-static int process_build_id_stub(struct perf_tool *tool __maybe_unused,
-                                union perf_event *event __maybe_unused,
-                                struct perf_session *session __maybe_unused)
-{
-       dump_printf(": unhandled!\n");
-       return 0;
-}
-
 static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
                                       union perf_event *event __maybe_unused,
                                       struct ordered_events *oe __maybe_unused)
                                  union perf_event *event,
                                  struct ordered_events *oe);
 
-static int process_id_index_stub(struct perf_tool *tool __maybe_unused,
-                                union perf_event *event __maybe_unused,
-                                struct perf_session *perf_session
-                                __maybe_unused)
-{
-       dump_printf(": unhandled!\n");
-       return 0;
-}
-
-static int process_event_auxtrace_info_stub(struct perf_tool *tool __maybe_unused,
-                               union perf_event *event __maybe_unused,
-                               struct perf_session *session __maybe_unused)
-{
-       dump_printf(": unhandled!\n");
-       return 0;
-}
-
 static int skipn(int fd, off_t n)
 {
        char buf[4096];
        return event->auxtrace.size;
 }
 
-static
-int process_event_auxtrace_error_stub(struct perf_tool *tool __maybe_unused,
-                                     union perf_event *event __maybe_unused,
-                                     struct perf_session *session __maybe_unused)
+static int process_event_op2_stub(struct perf_tool *tool __maybe_unused,
+                                 union perf_event *event __maybe_unused,
+                                 struct perf_session *session __maybe_unused)
 {
        dump_printf(": unhandled!\n");
        return 0;
        if (tool->tracing_data == NULL)
                tool->tracing_data = process_event_synth_tracing_data_stub;
        if (tool->build_id == NULL)
-               tool->build_id = process_build_id_stub;
+               tool->build_id = process_event_op2_stub;
        if (tool->finished_round == NULL) {
                if (tool->ordered_events)
                        tool->finished_round = process_finished_round;
                        tool->finished_round = process_finished_round_stub;
        }
        if (tool->id_index == NULL)
-               tool->id_index = process_id_index_stub;
+               tool->id_index = process_event_op2_stub;
        if (tool->auxtrace_info == NULL)
-               tool->auxtrace_info = process_event_auxtrace_info_stub;
+               tool->auxtrace_info = process_event_op2_stub;
        if (tool->auxtrace == NULL)
                tool->auxtrace = process_event_auxtrace_stub;
        if (tool->auxtrace_error == NULL)
-               tool->auxtrace_error = process_event_auxtrace_error_stub;
+               tool->auxtrace_error = process_event_op2_stub;
        if (tool->thread_map == NULL)
                tool->thread_map = process_event_thread_map_stub;
        if (tool->cpu_map == NULL)