From nobody Tue Oct 7 11:52:37 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 942272FF476 for ; Thu, 10 Jul 2025 20:37:20 +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=1752179842; cv=none; b=TivormRe5fhDiMIk7gCwq9Aju6H5Vv+QIOdlaOpYA2z9WsYmQVQznhJGDhmn6RehbycOyZ42m78agGudUPQVA3RcDZa4iEGuSmTA0nZxoqIRl/fT8Fu7d7IG8jhP3zmCOdnkcICniGcw6UBrPiHWRxB3tkrEm8BcACsiCp3ZR6Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752179842; c=relaxed/simple; bh=WFS1g6kYY+XgrAAa5iSXxbIVXwge/aB1XoG8Q1Q1zEI=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=pVo7CfxD8oYLSA8JEoOHiFq+xRdKTrl7XGNiFcaksj8qCf3wAKeB1KMfwK532x5o3+xv5ykAw2QcIfL477qbeTXJh7De3tfk91RUMdMMyNDdI2w3Cq6/O8p8N3J7EDtKXQYJNBB4OwO089zUc7f55DMNwJbYNgiI1jCDix9ZFsY= 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=SxkKd3iX; 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="SxkKd3iX" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-b26e33ae9d5so1677370a12.1 for ; Thu, 10 Jul 2025 13:37:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1752179840; x=1752784640; 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=SxkKd3iXSyrkKyEFhh8MDeyGlFNdiHq9jrhosV7Bz8M7B+lz4xTFBUHTKYgXdCrMmk LP39hjuclWp6+2W27tjYt7SOqtGEe76ONmJC/7/5yq3bvtAQmBUHv2Yyk9fKBgYBD/SN 63KYwNaRAewEP/GiVtRfz///auSfS+YuOqs7KvkT/W2XOBpbD/Cghyto9gkOF9zzch7H swJwCVkgPXI2zy0+Za0gzd3Vc2CTEHTmnI10q+TT6Jey7EJuwSRy6LfMtA66651VzdSY nBJKY5mQuboftOpoQxGIgoDSpQeyGsPWCcg7T9YfdCzbdppH/5P6uBUg1NnA2ObFwRxH a8mQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752179840; x=1752784640; 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=ch0q9AVUD35vROW09BkJxs5FOfw/oJl8k7/9WTGoVQL+ZT4ejvXHP9BDXhIJAEJHar mxqht9pGMtkKMTGv9gqzJVGWByj29tdW2teyQbcjCIwRAfPxC8XcRR93kdXBX8ACgsM0 lXgEsCTPfRbz5XQzvsLALZE7YM+mgYhxIvOm7U17KwaZrL4rBC/IxBd9rlZzOSOM08fL vXvG29ytde8YxUMzJKgx82E954T4rcVEoNrDq0v3MOCTd/og/1zJYPE/55DBpzBsU5vT WUhGGKPM1PHQXlg8Q7ThDe0d63zCX53h0frfE/VWjVA1xKnxCIk0GPS3IA+npuHlsWNn 8zkQ== X-Forwarded-Encrypted: i=1; AJvYcCXd5WemB1S4sqL5/deOoXEboZSN3GqGSaPwQi14bMSZklPpPDM/+UtXukCGQISeLCeEQMGF2xzDaYU9l9Y=@vger.kernel.org X-Gm-Message-State: AOJu0Ywbl0KbC0LcX1uJrbGiml3bWu7FvSnTuRL4gsZ+sNrLBjELwYC/ Ar66gRkEoCzb5y/zrlpqh3xE60rCbe9tmmGf8ZlSkCA3G+BjOXstOO1GN/MdREn4aZG+geO/ZJ3 pboV5rjUinA== X-Google-Smtp-Source: AGHT+IG66RLAamfdtlHykoWDuHT9pngW3hxA+XM+hCRXOVw+x50fSgsfw3tonkScwjdg82U82dx+zEn7RaDD X-Received: from plas9.prod.google.com ([2002:a17:903:2009:b0:234:c5eb:fe1d]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:da2d:b0:235:eefe:68f4 with SMTP id d9443c01a7336-23dede7d480mr8158925ad.29.1752179839979; Thu, 10 Jul 2025 13:37:19 -0700 (PDT) Date: Thu, 10 Jul 2025 13:36:50 -0700 In-Reply-To: <20250710203656.1963075-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250710203656.1963075-1-irogers@google.com> X-Mailer: git-send-email 2.50.0.727.gbf7dc18ff4-goog Message-ID: <20250710203656.1963075-9-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