linux-kernel - [PATCH v1 2/3] perf python: Add PMU argument to parse

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Message-ID: <20251016222228.2926870-2-irogers@google.com>
Date: Thu, 16 Oct 2025 15:22:27 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Howard Chu <howardchu95@...il.com>, Gautam Menghani <gautam@...ux.ibm.com>, 
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1 2/3] perf python: Add PMU argument to parse_metrics

Add an optional PMU argument to parse_metrics to allow restriction of
the particular metrics to be opened. If no argument is provided then
all metrics with the given name/group are opened

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/python.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index 779fe1280a56..fa5e4270d182 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -2051,7 +2051,7 @@ static PyObject *pyrf__parse_events(PyObject *self, PyObject *args)
 
 static PyObject *pyrf__parse_metrics(PyObject *self, PyObject *args)
 {
-	const char *input;
+	const char *input, *pmu = NULL;
 	struct evlist evlist = {};
 	PyObject *result;
 	PyObject *pcpus = NULL, *pthreads = NULL;
@@ -2059,14 +2059,14 @@ static PyObject *pyrf__parse_metrics(PyObject *self, PyObject *args)
 	struct perf_thread_map *threads;
 	int ret;
 
-	if (!PyArg_ParseTuple(args, "s|OO", &input, &pcpus, &pthreads))
+	if (!PyArg_ParseTuple(args, "s|sOO", &input, &pmu, &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,
+	ret = metricgroup__parse_groups(&evlist, pmu ?: "all", input,
 					/*metric_no_group=*/ false,
 					/*metric_no_merge=*/ false,
 					/*metric_no_threshold=*/ true,
-- 
2.51.0.858.gf9c4a03a3a-goog