[PATCH 2/3] perf tools: Reset hists number of entries before collapsing

[Frederic Weisbecker <fweisbec@gmail.com>]

When we collapse entries, we re-compute their total numbers
and period but we forget to reset the total number of entries
before.

Fix this so that the browser sees the correct number of entries.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: David Ahern <dsahern@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
---
 tools/perf/util/hist.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index bac6520..cef40d8 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -344,6 +344,7 @@ static void __hists__collapse_resort(struct hists *hists, bool threaded)
 
 	root = hists__get_rotate_entries_in(hists);
 	next = rb_first(root);
+	hists->nr_entries = 0;
 	hists->stats.total_period = 0;
 
 	while (next) {
-- 
1.7.5.4