perf session: Event statistics also are per session

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1260810361-22828-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 4e8a21c..bdfc4b8e 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -5,6 +5,7 @@
 #include "header.h"
 #include "thread.h"
 #include <linux/rbtree.h>
+#include "../../../include/linux/perf_event.h"
 
 struct ip_callchain;
 struct thread;
@@ -18,6 +19,8 @@
 	struct map_groups	kmaps;
 	struct rb_root		threads;
 	struct thread		*last_match;
+	struct events_stats	events_stats;
+	unsigned long		event_total[PERF_RECORD_MAX];
 	struct rb_root		hists;
 	u64			sample_type;
 	int			fd;