Add parse_metrics function that takes a string of metrics and/or
metric groups and returns the evlist containing the events and
metrics.
For example:
```
>>> import perf
>>> perf.parse_metrics("TopdownL1")
evlist([cpu/TOPDOWN.SLOTS/,cpu/topdown-retiring/,cpu/topdown-fe-bound/,
cpu/topdown-be-bound/,cpu/topdown-bad-spec/,cpu/INT_MISC.CLEARS_COUNT/,
cpu/INT_MISC.UOP_DROPPING/])
```
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Reviewed-by: Howard Chu <howardchu95@gmail.com>
---
tools/perf/util/python.c | 41 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index cf1128435022..48308ed4e1c7 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -1891,6 +1891,40 @@ static PyObject *pyrf__parse_events(PyObject *self, PyObject *args)
return result;
}
+static PyObject *pyrf__parse_metrics(PyObject *self, PyObject *args)
+{
+ const char *input;
+ struct evlist evlist = {};
+ PyObject *result;
+ PyObject *pcpus = NULL, *pthreads = NULL;
+ struct perf_cpu_map *cpus;
+ struct perf_thread_map *threads;
+ int ret;
+
+ if (!PyArg_ParseTuple(args, "s|OO", &input, &pcpus, &pthreads))
+ return NULL;
+
+ threads = pthreads ? ((struct pyrf_thread_map *)pthreads)->threads : NULL;
+ cpus = pcpus ? ((struct pyrf_cpu_map *)pcpus)->cpus : NULL;
+
+ evlist__init(&evlist, cpus, threads);
+ ret = metricgroup__parse_groups(&evlist, /*pmu=*/"all", input,
+ /*metric_no_group=*/ false,
+ /*metric_no_merge=*/ false,
+ /*metric_no_threshold=*/ true,
+ /*user_requested_cpu_list=*/ NULL,
+ /*system_wide=*/true,
+ /*hardware_aware_grouping=*/ false);
+ if (ret) {
+ errno = -ret;
+ PyErr_SetFromErrno(PyExc_OSError);
+ return NULL;
+ }
+ result = pyrf_evlist__from_evlist(&evlist);
+ evlist__exit(&evlist);
+ return result;
+}
+
static PyMethodDef perf__methods[] = {
{
.ml_name = "tracepoint",
@@ -1904,6 +1938,13 @@ static PyMethodDef perf__methods[] = {
.ml_flags = METH_VARARGS,
.ml_doc = PyDoc_STR("Parse a string of events and return an evlist.")
},
+ {
+ .ml_name = "parse_metrics",
+ .ml_meth = (PyCFunction) pyrf__parse_metrics,
+ .ml_flags = METH_VARARGS,
+ .ml_doc = PyDoc_STR(
+ "Parse a string of metics or metric groups and return an evlist.")
+ },
{
.ml_name = "pmus",
.ml_meth = (PyCFunction) pyrf__pmus,
--
2.51.0.rc1.167.g924127e9c0-goog