perf: Convert perf event types into event type events

Bypasses the event type perf header code and replaces it with a
synthesized event and processing function that accomplishes the
same thing, used when reading/writing perf data to/from a pipe.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: k-keiichi@bx.jp.nec.com
Cc: acme@ghostprotocols.net
LKML-Reference: <1270184365-8281-7-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

tools/perf/util/session.h

@@ -45,7 +45,8 @@ struct perf_event_ops {
 		 read,
 		 throttle,
 		 unthrottle,
-		 attr;
+		 attr,
+		 event_type;
 };
 
 struct perf_session *perf_session__new(const char *filename, int mode, bool force);