tracing: add trace name and id to event formats

To be able to identify the trace in the binary format output, the
id of the trace event (which is dynamically assigned) must also be listed.

This patch adds the name of the trace point as well as the id assigned.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>

kernel/trace/trace_events.c

@@ -487,7 +487,11 @@ event_format_read(struct file *filp, char __user *ubuf, size_t cnt,
 	if (*ppos)
 		return 0;
 
-	/* If this fails, so will the show_format. */
+	/* If any of the first writes fail, so will the show_format. */
+
+	trace_seq_printf(s, "name: %s\n", call->name);
+	trace_seq_printf(s, "ID: %d\n", call->id);
+	trace_seq_printf(s, "format:\n");
 	trace_write_header(s);
 
 	r = call->show_format(s);