perf trace: Rename delivery functions to ease making ordered_events selectable

Just hide a bit more how events gets delivered, hiding ordered_events
details from the main loop.

Cc: Adrian Hunter <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Link: https://lkml.kernel.org/n/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/builtin-trace.c

···
 	return err;
 }
 
-static int trace__deliver_event(struct trace *trace, union perf_event *event)
+static int __trace__deliver_event(struct trace *trace, union perf_event *event)
 {
 	struct perf_evlist *evlist = trace->evlist;
 	struct perf_sample sample;
···
 	return 0;
 }
 
-static int trace__flush_ordered_events(struct trace *trace)
+static int trace__flush_events(struct trace *trace)
 {
 	u64 first = ordered_events__first_time(&trace->oe.data);
 	u64 flush = trace->oe.last - NSEC_PER_SEC;
···
 	return 0;
 }
 
-static int trace__deliver_ordered_event(struct trace *trace, union perf_event *event)
+static int trace__deliver_event(struct trace *trace, union perf_event *event)
 {
 	struct perf_evlist *evlist = trace->evlist;
 	int err;
···
 	if (err)
 		return err;
 
-	return trace__flush_ordered_events(trace);
+	return trace__flush_events(trace);
 }
 
 static int ordered_events__deliver_event(struct ordered_events *oe,
···
 {
 	struct trace *trace = container_of(oe, struct trace, oe.data);
 
-	return trace__deliver_event(trace, event->event);
+	return __trace__deliver_event(trace, event->event);
 }
 
 static int trace__run(struct trace *trace, int argc, const char **argv)
···
 		while ((event = perf_mmap__read_event(md)) != NULL) {
 			++trace->nr_events;
 
-			err = trace__deliver_ordered_event(trace, event);
+			err = trace__deliver_event(trace, event);
 			if (err)
 				goto out_disable;
 
···
 
 			goto again;
 		} else {
-			if (trace__flush_ordered_events(trace))
+			if (trace__flush_events(trace))
 				goto out_disable;
 		}
 	} else {