[PATCH 3/7] perf hist: Initialize hierachy tree explicitly

From: Namhyung Kim
Date: Tue Sep 13 2016 - 03:46:51 EST


The hroot_in and hroot_out are root of hiearchy tree of hist entry. But
as hist entry is initialized by copying existing template entry, it
sometimes has non-empty tree and copied it incorrectly. This is a
problem especially when event group is used since it creates dummy
entries from already-processed entries in other event members.

Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
---
tools/perf/util/hist.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 702ba3a8ead6..37a08f20730a 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -417,6 +417,8 @@ static int hist_entry__init(struct hist_entry *he,
}
INIT_LIST_HEAD(&he->pairs.node);
thread__get(he->thread);
+ he->hroot_in = RB_ROOT;
+ he->hroot_out = RB_ROOT;

if (!symbol_conf.report_hierarchy)
he->leaf = true;
--
2.9.3