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authorPetr Machata <petrm@mellanox.com>2018-03-22 02:57:32 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-03-23 22:45:20 +0300
commit83428f2fad48e16fddff0cb445cb4fedf5afe4ab (patch)
treeaddf1890e855ad68222a8eb2111c6867581cc640 /tools
parent751b1783da784299b0509adb6a9cd3024cc4f837 (diff)
downloadlinux-83428f2fad48e16fddff0cb445cb4fedf5afe4ab.tar.xz
perf python: Reference Py_None before returning it
Python None objects are handled just like all the other objects with respect to their reference counting. Before returning Py_None, its reference count thus needs to be bumped. Signed-off-by: Petr Machata <petrm@mellanox.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Machata <petrm@mellanox.com> Link: http://lkml.kernel.org/r/b1e565ecccf68064d8d54f37db5d028dda8fa522.1521675563.git.petrm@mellanox.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/python.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index b956868fd445..863b61478edd 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -1004,8 +1004,10 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
return PyErr_NoMemory();
evsel = perf_evlist__event2evsel(evlist, event);
- if (!evsel)
+ if (!evsel) {
+ Py_INCREF(Py_None);
return Py_None;
+ }
pevent->evsel = evsel;