From nobody Wed Oct 8 14:39:35 2025 Received: from mail-pj1-f74.google.com (mail-pj1-f74.google.com [209.85.216.74]) (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 A582217A305 for ; Sat, 28 Jun 2025 00:09:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751069391; cv=none; b=LB+iZBuT3J5M/fZoPe7Isx/kdOqINFloeCSrPY6d2WfoQZwCUEkAo1dyb7/6JkG7idCMHtA2eOwChoOP46aonqsVt8fEPHwVm3WNRgeV313tCXtD2lmsUpCIV9Ff40tkKihkPLe3jv/n6Y6Ybu9M86pXJ+dL9c+mtX3I4d1Zn2I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751069391; c=relaxed/simple; bh=EHllJCh3FBBjFZEiqeZh0D/LqLJSXYnbMRpNl3cGfvQ=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=rVubwZiL5dajhtpoDclA2Xd44SmbnI/ovJmv15pz1OpJYu8u8vzpbhLH2rRdEH1QrOz8LU6ew9fBood2QBiZRSoonexBY91rnr+FPvScyY7BV6mP77lggAylWk1z8JIawP8t/DmpjEuKgAD9YjN/us7Z89fxtqcmGLlUFojzMak= 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=V+keBXxc; arc=none smtp.client-ip=209.85.216.74 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="V+keBXxc" Received: by mail-pj1-f74.google.com with SMTP id 98e67ed59e1d1-3141f9ce4e2so181870a91.1 for ; Fri, 27 Jun 2025 17:09:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1751069389; x=1751674189; 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=tL5Y631MOdTPqAWECGEy7VLE1a+4bW8n2hhp8ck1U1s=; b=V+keBXxcsipNTx7QFCNZZGayE2VfoYw46G3lAsAIG/2Ph5Kbyb0xTyGsDI4RwnRQHT QQtjNnfhgVVSRtzWlY7Uc4jUU/60wHjKVut4RKr2GYkcI+bKVHf5HKLogciq/aNlLdnQ 6jYVhUO+bZVANj/Y0Fam4dk1NK/kbqqyent1rseHlP0CK5vYZXw/KvSeRiXWz7ZnhJrd qwqBdMmlPUmwpIRr1ipZrRde+Y9vImMBo18ml2+KVXQU/XQyhCaCKre1LvPuxPlxuqz9 /L3T1RBYVuxC5yjlcmqf9p1ea1f/sA3DRHMn4wJJB1SMrJWGNPq8oFiqivayPQquoTiG Ii/g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751069389; x=1751674189; 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=tL5Y631MOdTPqAWECGEy7VLE1a+4bW8n2hhp8ck1U1s=; b=baakapgvIm4FDcgs9+NfMshS0dswDCnEqLPVNl0W64avcPJpvLCQf+6GUMpIialROH cR2zf3g/HAjeNe7+9KxSDH8tqKAZwAqvnfCYvkJ3sR4SVCBNFsWi66v58Wlb0Fgs8S3M O4xSh3ao6ymRdWhvJIyk1Sur/wvp/HL8utxfYb/oeZgDN9xkbjKdex6od8p3fJWsHz4J dIEJDf+LHhtMM14kMsSSH17XIlBPknABw+hvo5bioehih+JJh6KJHVGsvHI1NlXCFQ2v Wm9ptAjA5fT7lredji8ChuJnE5/vRc62BwM3DMNlWyLz9FM6EoVAT3zSWk4quY+9R09J ku1g== X-Forwarded-Encrypted: i=1; AJvYcCUJTlfRjPLEOR7Vst+FTzI1Wb+K3QZ9dfcCi/eGoR3LZk9b1L2TovQY0wcTnACvD3vj8u9cGRQ1DbJ9vKE=@vger.kernel.org X-Gm-Message-State: AOJu0YwnBj94KTvUD7bir7LiZLEpJ1lqxg7rL661IxpMJdRtMhYv5Tpi jb51iKr7kPY86LhwfKvcdHPWE43/dNrYKWz7dGNByMEZ8248oWcCjihG43DwwW1s+up3/2KBG1o a8m1+9eQOdA== X-Google-Smtp-Source: AGHT+IFZk1yuKbKwtaqMAJQzeJc3Q7lwZyApGvaGBinyjka+yHZt+6eYIOiRdHb3F8h5NAt0RO3Yv98gMaUP X-Received: from pjbpl1.prod.google.com ([2002:a17:90b:2681:b0:309:f831:28e0]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:4c4f:b0:314:2a2e:9da9 with SMTP id 98e67ed59e1d1-318c92e1a98mr7274791a91.25.1751069389082; Fri, 27 Jun 2025 17:09:49 -0700 (PDT) Date: Fri, 27 Jun 2025 17:09:21 -0700 In-Reply-To: <20250628000929.230406-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250628000929.230406-1-irogers@google.com> X-Mailer: git-send-email 2.50.0.727.gbf7dc18ff4-goog Message-ID: <20250628000929.230406-8-irogers@google.com> Subject: [PATCH v4 07/15] 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 , John Garry , "Masami Hiramatsu (Google)" , Howard Chu , Weilin Wang , Thomas Richter , Andi Kleen , Tiezhu Yang , Gautam Menghani , 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 33b23d56dfb1..f86a82548636 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -648,6 +648,67 @@ 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; @@ -658,6 +719,12 @@ 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