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-rw-r--r--tools/perf/tests/attr.py7
1 files changed, 6 insertions, 1 deletions
diff --git a/tools/perf/tests/attr.py b/tools/perf/tests/attr.py
index 6bb50e82a3e3..ff9b60b99f52 100644
--- a/tools/perf/tests/attr.py
+++ b/tools/perf/tests/attr.py
@@ -1,4 +1,5 @@
#! /usr/bin/python
+# SPDX-License-Identifier: GPL-2.0
import os
import sys
@@ -237,6 +238,7 @@ class Test(object):
# events in result. Fail if there's not any.
for exp_name, exp_event in expect.items():
exp_list = []
+ res_event = {}
log.debug(" matching [%s]" % exp_name)
for res_name, res_event in result.items():
log.debug(" to [%s]" % res_name)
@@ -253,7 +255,10 @@ class Test(object):
if exp_event.optional():
log.debug(" %s does not match, but is optional" % exp_name)
else:
- exp_event.diff(res_event)
+ if not res_event:
+ log.debug(" res_event is empty");
+ else:
+ exp_event.diff(res_event)
raise Fail(self, 'match failure');
match[exp_name] = exp_list