When sample is processed using multi-thread, each sample is gathered on
each thread's hist tree and then merged into the real hist tree. But
hist_entry->hists pointer was not updated so it could refer wrong hists
resulted in missing outputs.
Signed-off-by: Namhyung Kim <namhy...@kernel.org>
---
tools/perf/util/hist.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index ea4f3ad978b0..a12e5022fe04 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1008,6 +1008,14 @@ bool hists__collapse_insert_entry(struct hists *hists
__maybe_unused,
}
hists->nr_entries++;
+ /*
+ * If a hist entry is processed in multi-threaded environment,
+ * it points to a dummy local hists which was used only for
+ * intermidate processing. So update it to a real one so that
+ * it can find the correct info later.
+ */
+ he->hists = hists;
+
rb_link_node(&he->rb_node_in, parent, p);
rb_insert_color(&he->rb_node_in, root);
return true;
--
2.6.2
--
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