From nobody Tue Oct 7 10:32:54 2025 Received: from mail-pl1-f201.google.com (mail-pl1-f201.google.com [209.85.214.201]) (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 999BD309DD5 for ; Thu, 10 Jul 2025 23:58:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752191896; cv=none; b=lf0wyNkZCGSQ50ye0YEiCP3xUmAk3E/AbIf4S/iwszJb2vQ10bVk0UWohZAVYwCKvqSe8u386ta+fMq4REvtg++3UvU0zDizJ3ddrFWUCdzylOBy1T85yc/ObBbSEgqYHiXU5cgzcmBsLM1Z0/q/XR7OJiy30cp02ktp2V3GGVA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752191896; c=relaxed/simple; bh=12yJFp+ZPyq7VIWySRLKkGC0LH/3/sqX9XbjRxQaNbc=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=XaGy3dQB/lsL2elgqYwzDg2WZmI1DB06GI11N7FPZRILD0BQhM4q2Dtz5THresaIuGFnSfkSmEJrraMzod2OLfnYwJ0XoOLe2lfvL4zethwsxl7WJDJSIF3QZRXySd9e2WfdvX10xfkrupKd/754tQsquXnM59BbdZ2ZEDZ/+gU= 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=NY6gYPif; arc=none smtp.client-ip=209.85.214.201 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="NY6gYPif" Received: by mail-pl1-f201.google.com with SMTP id d9443c01a7336-236725af87fso24231435ad.3 for ; Thu, 10 Jul 2025 16:58:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1752191894; x=1752796694; 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=6GmxHwehNANjslAlbEN827g4sdD+kiWgzyjC/AAO5fc=; b=NY6gYPifGRyYUTU31A3Sze6qYaLBER2VCz24MgJV8a7OHPt/qrtOTJ1NDIs8RnTbWV UfegW095ju2dSyPXWE7pv5UhoVTthbFlEjd8/Bcl25cv2WHob5KDQDsa0L1E9l4MHMVz qpKZv0EWuJq6cfkTAQTpyTySvzBzXViB73sAz6B2oOJMz7DdiA/xL5Ic13PKdI/8CPwu kVZwjtHe985fLo2xazY7M3XbDFSV25MinUwBujEeU2Nz9LK4cDQcrqPEGSLHaHLLDsck 5A+eqFbZP9ls6VeOHRmVAZVUdqlhpW0il9yl6u9V/1WGb95SVHfWByKDgGoGns1zv+I1 9fLQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752191894; x=1752796694; 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=6GmxHwehNANjslAlbEN827g4sdD+kiWgzyjC/AAO5fc=; b=SBToN5h6i7JThOqDNdF4FOaDRuq3V6/GRAbhZviGR/OsQ2adW/YikCbHORBn4j/Qt1 NhtBLNnGT3+N5xZwASiiLGyEx0abbRyfplJ8jS+7ShRUsTPxp5C+G/gfJQYJDunMr7yh eyg13tXja/8zupvSj2yy6NzbMcM/wOZKot1Nk8/xBh5b4mVLjwZA9LLW7CAUY94Qpp/c 7yBJ16vLfnhNmBw9vJDzRIWZdffb7uv/TbNe7ekWDK4602cdRmWjifmTL6f85ziaUH/N 76vpRna0wvKY8ha2+dmYHgGtwkhDuJZm1hwmHjyjKSRJ41r8/58/YR60Vssnql1zG73t hyXA== X-Forwarded-Encrypted: i=1; AJvYcCWbj4ul1HXtuIDwMc7w991lxP1xic16lOXkri4QJtDpW7Zdz9RHoUjjCtZWJcHWsgWx44yLfw6jsX3rOIE=@vger.kernel.org X-Gm-Message-State: AOJu0Yzdjr29BNKLIxmRnQBfp4HfF7vzOM7Cfm8tqJBsEXAWovIIt6g6 r26LpbyKLzadsIWPLIjrRGJayhKtZUZNfQ5CerFnd0RW65LAl/ZxTd/oFaWdQ0A98LqlzZFPXVg kri1Ik8gXtQ== X-Google-Smtp-Source: AGHT+IHab2nPLVhZMvMV0JeGUHv+oB3+dmQtdHOC6bLBDlha9CcopcXmtLsynh9knoF2yBJxVnBK4yMwIrNG X-Received: from plblc5.prod.google.com ([2002:a17:902:fa85:b0:236:91fa:131a]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:f547:b0:234:a139:1208 with SMTP id d9443c01a7336-23dede3874dmr15831295ad.16.1752191893843; Thu, 10 Jul 2025 16:58:13 -0700 (PDT) Date: Thu, 10 Jul 2025 16:57:29 -0700 In-Reply-To: <20250710235735.1089240-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250710235735.1089240-1-irogers@google.com> X-Mailer: git-send-email 2.50.0.727.gbf7dc18ff4-goog Message-ID: <20250710235735.1089240-9-irogers@google.com> Subject: [PATCH v6 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 2b4f10a9b8fe..b0bd4dc27409 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -653,6 +653,67 @@ 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; @@ -663,6 +724,12 @@ 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