From nobody Tue Oct 7 05:43:02 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 4362A26A08C for ; Mon, 14 Jul 2025 16:44:33 +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=1752511474; cv=none; b=EXFw9DFS5pBVVBPfRM7vxoYQpKtFTyOb9AvI2GxBbOAw7xGK0AKNE4uyRh4uDSRieXYVkdg8KCUywzZItt2fNgQhS+W8fjd/BXuz9KM7Jq7XKnKaIlKJ0QpIgtdeNgx7byAYtOkCkKMkzTAuE4BVKuOBPQPdhybA4ejdd07FzM8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752511474; c=relaxed/simple; bh=6lE7J0CHeDrRnguVoXzOcse+N16m/nBCEQyqUf7fv9M=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=DMc2JU8mISHzZi9EtnTJSeGK2WiL1jkaBB67WzXWMCFYqWLSgxjEP85iT2SxZZkm2n9N8+n2+odqJ7uoyp877BdcbtY8mEQ7EBc3DDz7FuJi3JYYSMzzubuDlRTYPiHuYp0j+8aFUNaDL2/i18FbfYn1PoI39AA7A/V+iiJ/xnM= 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=oY0AWdwc; 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="oY0AWdwc" Received: by mail-pl1-f201.google.com with SMTP id d9443c01a7336-235dd77d11fso49138925ad.0 for ; Mon, 14 Jul 2025 09:44:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1752511472; x=1753116272; 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=4ywDV0MbtvBVNt5LHpQt2YRMH+WSUYLfE4Z1Cz/d/Ys=; b=oY0AWdwcZUEVaU+gQgs42n79qjfvSVGx8mtDK+Y/a1iPM0XrQMlXgA2AxmX1e4ttsN GogXrMMxALPvAX+cheplGKs++Gm8z+BGDt8bwJC6rhwV4fpSnrbRu+rVp+1KYp1qGR6Q Gz6Ecxo9Co+JR6ZBVwR8eGKnffIi6eENIzEFhvZrdqb5tYW8ag45AAkaqI3mG6fBmfxZ We7wMOrmZB3zpZyGo/ebKgRAfCdmQN0fnAxOpKfcNyWZNjyvabBEKzzVD7mgbpcqINwT JLCM8CkcGtiBIZAl434A+EKnaIlPr1Ehxh7L1fI8XY8t23cfgZbyokJLzFzftY142xID YHNA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752511472; x=1753116272; 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=4ywDV0MbtvBVNt5LHpQt2YRMH+WSUYLfE4Z1Cz/d/Ys=; b=DfnEHbnCGDh8x+z7MOwDHxFlbtDWv4KWsFVVVppvTCZwdaeHQCMAGY8t9Cu/LMntCl /gKebzI2WCQUsJODh4gnPp10KR0rcIlDka6PohVYr9BKhX54Xz6j8gxb8OFQRRZKG5QE so4cjrcqc2D6fbiZwV5sRHYSi99n2ZeuSQt2HmfNx7Wds2jn8FH30KV1LfML1vp1P+Nb 5V0vINv0MFbCu96BCkNupRONxAOyzYAAZwep91ZsM1VmCaBanuCYB7mu02e0Qabzfx2P TSTodFRVfvwAtAxoe17jOKUGy+ktFyo3RFcQNDcHj4uqBGiy9HorZRF8PPFpIJM5fd8k yxsA== X-Forwarded-Encrypted: i=1; AJvYcCUvlsYvbdgCt1ce8GhQRm/1cjUSP4C0cagmbz9spJ8rQTY5o1xACDSWxWLdW9a1w0KWcVFDrdSuanVnglU=@vger.kernel.org X-Gm-Message-State: AOJu0YwDxJoeg4PWuZfDavpP40GNDaw0mRykZW2j0GuMJPmVM61ntfWC 9Pp0Naoxc6rIyhTlltqZdt90YkbaPzSR6rPoCuPK9EjUlt2Xb9XpHgudXCfngHLb9squ326ITqa 1CnuPYwLmBA== X-Google-Smtp-Source: AGHT+IER6gGlKSfdu3/9bjpgJYcI3p6MQbLGztW5ihRXI2vLth+raRXa9Gup67Pi04sJC/vfHZHaelA8i3Sp X-Received: from pjbof13.prod.google.com ([2002:a17:90b:39cd:b0:313:242b:1773]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:4b0d:b0:234:8f5d:e3a4 with SMTP id d9443c01a7336-23dede2f256mr213432505ad.2.1752511472580; Mon, 14 Jul 2025 09:44:32 -0700 (PDT) Date: Mon, 14 Jul 2025 09:43:58 -0700 In-Reply-To: <20250714164405.111477-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250714164405.111477-1-irogers@google.com> X-Mailer: git-send-email 2.50.0.727.gbf7dc18ff4-goog Message-ID: <20250714164405.111477-11-irogers@google.com> Subject: [PATCH v7 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 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 | 71 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index 860df6436f87..845476411576 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 2.50.0.727.gbf7dc18ff4-goog