perf session: Add storage for seperating event types in report

This patch adds the structures necessary to count each event
type independently in perf report.

Signed-off-by: Eric B Munson <ebmunson@us.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1267804269-22660-4-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 50a7132..a33b949 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -99,6 +99,15 @@
 	u64 lost;
 };
 
+struct event_stat_id {
+	struct rb_node		rb_node;
+	struct rb_root		hists;
+	struct events_stats	stats;
+	u64			config;
+	u64			event_stream;
+	u32			type;
+};
+
 void event__print_totals(void);
 
 struct perf_session;