perf python: Add struct evsel into struct pyrf_event

To be able to find out event configuration info during sample parsing.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1468148882-10362-8-git-send-email-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/python.c

@@ -48,6 +48,7 @@ PyMODINIT_FUNC initperf(void);
 
 struct pyrf_event {
 	PyObject_HEAD
+	struct perf_evsel *evsel;
 	struct perf_sample sample;
 	union perf_event   event;
 };
@@ -865,11 +866,18 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
 	if (event != NULL) {
 		PyObject *pyevent = pyrf_event__new(event);
 		struct pyrf_event *pevent = (struct pyrf_event *)pyevent;
+		struct perf_evsel *evsel;
 
 		if (pyevent == NULL)
 			return PyErr_NoMemory();
 
-		err = perf_evlist__parse_sample(evlist, event, &pevent->sample);
+		evsel = perf_evlist__event2evsel(evlist, event);
+		if (!evsel)
+			return Py_None;
+
+		pevent->evsel = evsel;
+
+		err = perf_evsel__parse_sample(evsel, event, &pevent->sample);
 
 		/* Consume the even only after we parsed it out. */
 		perf_evlist__mmap_consume(evlist, cpu);