[PATCH v2 16/16] perf python: Add parse_events function

Ian Rogers
2024-10-16T04:25:12Z

Add basic parse_events function that takes a string and returns an
evlist.

Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/util/python.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)

diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index 6e2ff0076daa..ec37f887db43 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -1201,6 +1201,30 @@ static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel,
#endif // HAVE_LIBTRACEEVENT
}

+static PyObject *pyrf__parse_events(PyObject *self, PyObject *args)
+{
+ const char *input;
+ struct pyrf_evlist *pevlist;
+ struct parse_events_error err;
+
+ if (!PyArg_ParseTuple(args, "s", &input))
+ return NULL;
+
+ pevlist = PyObject_New(struct pyrf_evlist, &pyrf_evlist__type);
+ if (!pevlist)
+ return NULL;
+
+ parse_events_error__init(&err);
+ memset(&pevlist->evlist, 0, sizeof(pevlist->evlist));
+ evlist__init(&pevlist->evlist, NULL, NULL);
+ if (parse_events(&pevlist->evlist, input, &err)) {
+ parse_events_error__print(&err, input);
+ PyErr_SetFromErrno(PyExc_OSError);
+ return NULL;
+ }
+ return (PyObject *)pevlist;
+}
+
static PyMethodDef perf__methods[] = {
{
.ml_name = "tracepoint",
@@ -1208,6 +1232,12 @@ static PyMethodDef perf__methods[] = {
.ml_flags = METH_VARARGS | METH_KEYWORDS,
.ml_doc = PyDoc_STR("Get tracepoint config.")
},
+ {
+ .ml_name = "parse_events",
+ .ml_meth = (PyCFunction) pyrf__parse_events,
+ .ml_flags = METH_VARARGS,
+ .ml_doc = PyDoc_STR("Parse a string of events and return an evlist.")
+ },
{ .ml_name = NULL, }
};

--
2.47.0.rc1.288.g06298d1525-goog