linux-kernel - [PATCH v3 3/7] perf python: Add evsel cpus and threads functions

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Message-ID: <20250519195148.1708988-4-irogers@google.com>
Date: Mon, 19 May 2025 12:51:40 -0700
From: Ian Rogers <irogers@...gle.com>
To: Gautam Menghani <gautam@...ux.ibm.com>, Peter Zijlstra <peterz@...radead.org>, 
	Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, Howard Chu <howardchu95@...il.com>, 
	linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
Cc: maddy@...ux.ibm.com
Subject: [PATCH v3 3/7] perf python: Add evsel cpus and threads functions

Allow access to cpus and thread_map associated with an evsel.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/python.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index f3c05da25b4a..ead3afd2d996 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -781,6 +781,27 @@ static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel,
 	return Py_None;
 }
 
+static PyObject *pyrf_evsel__cpus(struct pyrf_evsel *pevsel)
+{
+	struct pyrf_cpu_map *pcpu_map = PyObject_New(struct pyrf_cpu_map, &pyrf_cpu_map__type);
+
+	if (pcpu_map)
+		pcpu_map->cpus = perf_cpu_map__get(pevsel->evsel.core.cpus);
+
+	return (PyObject *)pcpu_map;
+}
+
+static PyObject *pyrf_evsel__threads(struct pyrf_evsel *pevsel)
+{
+	struct pyrf_thread_map *pthread_map =
+		PyObject_New(struct pyrf_thread_map, &pyrf_thread_map__type);
+
+	if (pthread_map)
+		pthread_map->threads = perf_thread_map__get(pevsel->evsel.core.threads);
+
+	return (PyObject *)pthread_map;
+}
+
 static PyObject *pyrf_evsel__str(PyObject *self)
 {
 	struct pyrf_evsel *pevsel = (void *)self;
@@ -799,6 +820,18 @@ static PyMethodDef pyrf_evsel__methods[] = {
 		.ml_flags = METH_VARARGS | METH_KEYWORDS,
 		.ml_doc	  = PyDoc_STR("open the event selector file descriptor table.")
 	},
+	{
+		.ml_name  = "cpus",
+		.ml_meth  = (PyCFunction)pyrf_evsel__cpus,
+		.ml_flags = METH_NOARGS,
+		.ml_doc	  = PyDoc_STR("CPUs the event is to be used with.")
+	},
+	{
+		.ml_name  = "threads",
+		.ml_meth  = (PyCFunction)pyrf_evsel__threads,
+		.ml_flags = METH_NOARGS,
+		.ml_doc	  = PyDoc_STR("threads the event is to be used with.")
+	},
 	{ .ml_name = NULL, }
 };
 
-- 
2.49.0.1101.gccaa498523-goog