From nobody Tue Oct 7 11:54:48 2025 Received: from mail-pg1-f201.google.com (mail-pg1-f201.google.com [209.85.215.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7176B306DB1 for ; Thu, 10 Jul 2025 20:25:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752179141; cv=none; b=FXGgnJiYXqHNeROtX9I3GzQoMy5zMFz0/SVJ1YVgdY4h6HhgDUOrLAZFQjPSRdqrJk4Ai4M4Q+5gLMMMGy3nIKnc/Ai8lsrVt1OYXW0niFWf6758s4U2JOpBzwrK/NuTeGNzKzE1l+vNnakEsjPM3w+89pESt/24KHMqNf7uKi4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752179141; c=relaxed/simple; bh=WFS1g6kYY+XgrAAa5iSXxbIVXwge/aB1XoG8Q1Q1zEI=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=Ju07CU7uFXr37q3Eg2JkW3xx9/2O6sjm8TKL0HBhvxJ+clu9F2O+cPcUsb/VcUt+ZUB68bt/2X2dA5iy7B6Ur1T5PZgpVI83bZ6VcbgQmNgpDM2uQ7frAvFflV5aR0wKddZwHlOPpHkvM5ytOu0oHZHrBrhojvkC8Zb9x3EUWss= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=KHlkjm/X; arc=none smtp.client-ip=209.85.215.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="KHlkjm/X" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-b38ffb62492so1569692a12.0 for ; Thu, 10 Jul 2025 13:25:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1752179140; x=1752783940; darn=vger.kernel.org; h=to:from:subject:message-id:references:mime-version:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=nLmmHKES778Ih0J3i1L0ZkfJuaKP4hpTsElytjjdQfs=; b=KHlkjm/X5phLhyX7I1q/rihXyDgXNMz7gr42FWaE9jz6+X9xlKRv/DWItvkMsahS0E xx39SmnR2th1fmFr5ekOi/uSd2LItbnuzDLqMjCZXmeiG8RDM8IvRBNJrP+O21hr/UeS T2WE14vK2MFHNIreBpfvx/lhUEFS/OeFC3gOdqDpQEFon5zLDJUEhx36Sv1iYFqt5ggF 0icJnMdpaF7v0lKk+Z03vyP5H2+kmqvMKrP0Mb5TQVZ865Kda8P8oaoxyiM/dJfId4KQ 0fPfEPANbmEz0kRsC1Nm4OaiDP3lWAkgxnsgUmPpeOYZQesSQMVTlZJZBwVNjArIHxUX Aa+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752179140; x=1752783940; h=to:from:subject:message-id:references:mime-version:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=nLmmHKES778Ih0J3i1L0ZkfJuaKP4hpTsElytjjdQfs=; b=GJrrm5ZNKJKG/6pqWKKEQ8/9LQxNcTBbplFFOBmjU54BAgqeES/FIdLiZze1mtb8h2 GjJz1BA1ufUgY1M/Sv9zVqJHTqDmej3rFYERWndHK1ToARjsEVgRQWxywyBbjsdZjzSi F6HnwI9ZL8ie7CXx7uYQLzVZjymBtLp9Q8P0NYHm0gqk+3/mxh25R4jD1NLhRmpC5ZMZ ap6gDPAX6WuOMqF/l922K8PXKXy9E2f+1jTVxhS/fI9XlAL00VINv61frMp5Z8BakjnP Sqw4KsHcwLyEtXIAp2bjFM6J9FKnDbyjr2TaxjGUmQMaH3Ggv7h9rEZ3+VSxQGAg0s2h G1dA== X-Forwarded-Encrypted: i=1; AJvYcCVjnoTw8XQPaVwtinXlp3dJLdczmbLQm1cqEPGUrutgjtQFkuY7GNsmI0ecC6AJpu/7MEh2KfpIqT8PgzE=@vger.kernel.org X-Gm-Message-State: AOJu0YxYJeGS8Wl3MSjsBsoFqF7QLioF5KGSMQ1N+TJej4TAFmUBWAK3 wOt5JMlAvQsnCprOWL0fxxAjYHVc2k7uSwU+KQfxtpyQ/rsfxm8fNgvFLTR8ZO8a+KbjGnzf2tL A5dKiGyaxVQ== X-Google-Smtp-Source: AGHT+IEjFG/YTY29uA5hJ6qZ0TEChiwCH3/Mq1LeU8SbYbzUA0zgXqfOLwTrlnQOsn68ErSvSK7CsSstUNPX X-Received: from pfbbk21.prod.google.com ([2002:aa7:8315:0:b0:748:f3b0:4db2]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:72ab:b0:220:b0dc:24f2 with SMTP id adf61e73a8af0-231202f28eemr1287735637.34.1752179139740; Thu, 10 Jul 2025 13:25:39 -0700 (PDT) Date: Thu, 10 Jul 2025 13:24:54 -0700 In-Reply-To: <20250710202500.1959672-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250710202500.1959672-1-irogers@google.com> X-Mailer: git-send-email 2.50.0.727.gbf7dc18ff4-goog Message-ID: <20250710202500.1959672-17-irogers@google.com> Subject: [PATCH v5 08/14] 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 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 --- tools/perf/util/python.c | 67 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index 0124db5ab3d1..728ed27986b5 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -649,6 +649,67 @@ 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); + + if (!py_list) + return NULL; + + if (perf_pmu__for_each_event(ppmu->pmu, + /*skip_duplicate_pmus=3D*/false, + py_list, + pyrf_pmu__events_cb) !=3D 0) { + Py_DECREF(py_list); + return NULL; + } + return py_list; +} + static PyObject *pyrf_pmu__repr(PyObject *self) { struct pyrf_pmu *ppmu =3D (void *)self; @@ -659,6 +720,12 @@ 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 2.50.0.727.gbf7dc18ff4-goog