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AJvYcCV7VShdUDQeKaKAvI2MINlkZm5jp0eG1Stu+JtAgb59ePtgL6Q36YIVObpW1jg/AbIFAgaJw98HYTGRDO4=@vger.kernel.org X-Gm-Message-State: AOJu0YwgGGnjbs5XV7dWQzo+bbOJFDROOZTctLZRPFe+lN6Fth+huaKj zN3sjalpyPvCca23Mgl2eiCbbIAJamWtCNRK8916iQE5zqlFsbf59lUAQK082qlOyozxtWVQ4y8 IgGL9kzjZ/g== X-Google-Smtp-Source: AGHT+IEKlvLcagcimf+HHBXj8vgIqOb3k6bzDPBVgZTJwDjKILapovy/9ACfNqmyU4bwCI8eL7s4Eb7Jv9V+ X-Received: from plpj7.prod.google.com ([2002:a17:903:3d87:b0:23d:dd69:dd07]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:1b4c:b0:235:e76c:4353 with SMTP id d9443c01a7336-23fb31b01a6mr51649805ad.51.1753469552764; Fri, 25 Jul 2025 11:52:32 -0700 (PDT) Date: Fri, 25 Jul 2025 11:51:56 -0700 In-Reply-To: <20250725185202.68671-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250725185202.68671-1-irogers@google.com> X-Mailer: git-send-email 2.50.1.552.g942d659e1b-goog Message-ID: <20250725185202.68671-11-irogers@google.com> Subject: [PATCH v9 10/16] perf python: Add function returning dictionary of all events on a PMU From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Kan Liang , James Clark , Xu Yang , "Masami Hiramatsu (Google)" , Collin Funk , Howard Chu , Weilin Wang , Andi Kleen , "Dr. David Alan Gilbert" , Thomas Richter , Tiezhu Yang , Gautam Menghani , Thomas Falcon , Chun-Tse Shao , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org Cc: Arnaldo Carvalho de Melo Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Allow all events on a PMU to be gathered, similar to how perf list gathers event information. An example usage: ``` $ python Python 3.12.9 (main, Feb 5 2025, 01:31:18) [GCC 14.2.0] on linux >>> import perf >>> for pmu in perf.pmus(): ... print(pmu.events()) ... [{'name': 'mem_load_retired.l3_hit', 'desc': 'Retired load instructions... ``` Signed-off-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo --- tools/perf/util/python.c | 71 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index ddcb5d40ff14..d49b4401ab7e 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -660,6 +660,71 @@ static PyObject *pyrf_pmu__name(PyObject *self) return PyUnicode_FromString(ppmu->pmu->name); } =20 +static bool add_to_dict(PyObject *dict, const char *key, const char *value) +{ + PyObject *pkey, *pvalue; + bool ret; + + if (value =3D=3D NULL) + return true; + + pkey =3D PyUnicode_FromString(key); + pvalue =3D PyUnicode_FromString(value); + + ret =3D pkey && pvalue && PyDict_SetItem(dict, pkey, pvalue) =3D=3D 0; + Py_XDECREF(pkey); + Py_XDECREF(pvalue); + return ret; +} + +static int pyrf_pmu__events_cb(void *state, struct pmu_event_info *info) +{ + PyObject *py_list =3D state; + PyObject *dict =3D PyDict_New(); + + if (!dict) + return -ENOMEM; + + if (!add_to_dict(dict, "name", info->name) || + !add_to_dict(dict, "alias", info->alias) || + !add_to_dict(dict, "scale_unit", info->scale_unit) || + !add_to_dict(dict, "desc", info->desc) || + !add_to_dict(dict, "long_desc", info->long_desc) || + !add_to_dict(dict, "encoding_desc", info->encoding_desc) || + !add_to_dict(dict, "topic", info->topic) || + !add_to_dict(dict, "event_type_desc", info->event_type_desc) || + !add_to_dict(dict, "str", info->str) || + !add_to_dict(dict, "deprecated", info->deprecated ? "deprecated" : NU= LL) || + PyList_Append(py_list, dict) !=3D 0) { + Py_DECREF(dict); + return -ENOMEM; + } + Py_DECREF(dict); + return 0; +} + +static PyObject *pyrf_pmu__events(PyObject *self) +{ + struct pyrf_pmu *ppmu =3D (void *)self; + PyObject *py_list =3D PyList_New(0); + int ret; + + if (!py_list) + return NULL; + + ret =3D perf_pmu__for_each_event(ppmu->pmu, + /*skip_duplicate_pmus=3D*/false, + py_list, + pyrf_pmu__events_cb); + if (ret) { + Py_DECREF(py_list); + errno =3D -ret; + PyErr_SetFromErrno(PyExc_OSError); + return NULL; + } + return py_list; +} + static PyObject *pyrf_pmu__repr(PyObject *self) { struct pyrf_pmu *ppmu =3D (void *)self; @@ -670,6 +735,12 @@ static PyObject *pyrf_pmu__repr(PyObject *self) static const char pyrf_pmu__doc[] =3D PyDoc_STR("perf Performance Monitori= ng Unit (PMU) object."); =20 static PyMethodDef pyrf_pmu__methods[] =3D { + { + .ml_name =3D "events", + .ml_meth =3D (PyCFunction)pyrf_pmu__events, + .ml_flags =3D METH_NOARGS, + .ml_doc =3D PyDoc_STR("Name of the PMU including suffixes.") + }, { .ml_name =3D "name", .ml_meth =3D (PyCFunction)pyrf_pmu__name, --=20 2.50.1.552.g942d659e1b-goog