The "parent" sort to perf report is most useful when a call graph
is included in the trace, so if we see parent in the sort keys,
pass the -g option to perf record to get that output in the trace.
Change-Id: I764eacf8ec3510dfdd91be2bea025d145d515f94
---
client/profilers/perf/perf.py | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/client/profilers/perf/perf.py b/client/profilers/perf/perf.py
index e6f9bb7..4aadbb1 100644
--- a/client/profilers/perf/perf.py
+++ b/client/profilers/perf/perf.py
@@ -36,6 +36,8 @@ class perf(profiler.profiler):
self.logfile = os.path.join(test.profdir, "perf")
cmd = ("%s record -a -o %s" %
(self.perf_bin, self.logfile))
+ if "parent" in self.sort_keys:
+ cmd += " -g"
for event in self.events:
cmd += " -e %s" % event
self._process = subprocess.Popen(cmd, shell=True,
--
1.7.3.1
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