From: Stephane Eranian <[email protected]>

As noticed by Jiri, the hist_entry->branch_info.to/from maps need to be
marked as referenced to avoid problems later on.  So we do this when the
hist_entry is allocated.

Signed-off-by: Stephane Eranian <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/20130114140245.GA4692@quad
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
 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 9485c70..8170a3d 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -245,6 +245,14 @@ static struct hist_entry *hist_entry__new(struct 
hist_entry *template)
 
                if (he->ms.map)
                        he->ms.map->referenced = true;
+
+               if (he->branch_info) {
+                       if (he->branch_info->from.map)
+                               he->branch_info->from.map->referenced = true;
+                       if (he->branch_info->to.map)
+                               he->branch_info->to.map->referenced = true;
+               }
+
                if (symbol_conf.use_callchain)
                        callchain_init(he->callchain);
 
-- 
1.8.1.1.361.gec3ae6e

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