perf tools: Add ordered_events__init function

Adding ordered_events__init function for struct ordered_events struct
initialization.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: David Ahern <dsahern@gmail.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-g6dx35hed8g14eh1ygx4uzp6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 0ccf051..7f5851e 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -75,11 +75,7 @@
 		goto out;
 
 	session->repipe = repipe;
-	INIT_LIST_HEAD(&session->ordered_events.events);
-	INIT_LIST_HEAD(&session->ordered_events.cache);
-	INIT_LIST_HEAD(&session->ordered_events.to_free);
-	session->ordered_events.max_alloc_size = (u64) -1;
-	session->ordered_events.cur_alloc_size = 0;
+	ordered_events__init(&session->ordered_events);
 	machines__init(&session->machines);
 
 	if (file) {