From nobody Tue Oct 7 11:54:50 2025 Received: from mail-pj1-f73.google.com (mail-pj1-f73.google.com [209.85.216.73]) (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 8DE1B2FE33B for ; Thu, 10 Jul 2025 20:25:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752179117; cv=none; b=AnGu+G3WTfkA4Zd3zS5zYbZbsuEa5F0FLwd80EgVUmMUtsnnRzBVT/IF4wsym14XHwdsfuF3Zd2/zEGFRG+xAaoLHkOkKWJOEtvxhIrekLdtfIvkJIoEKZq0bN/piG//REydYW0gvLypkyLuttQqddD2f6z3vW4gY15vNQcBQVM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752179117; c=relaxed/simple; bh=WFS1g6kYY+XgrAAa5iSXxbIVXwge/aB1XoG8Q1Q1zEI=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=cGycKKTGvMurUyW9zyxBw/oYOK61qXyievisrt8QnX2Ohs1cK5o0sMU0gBOrdhVHZHVtKEMzgWD98uYavC3UIBK+mWxQXkJ8Cde2J61RD7rDSTIZ9172QzfHs2Mh54qvndKl9KVvubJdANwESLD623Z+kwQ0sw65G/RwWRT2AWs= 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=fb9W3gVI; arc=none smtp.client-ip=209.85.216.73 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="fb9W3gVI" Received: by mail-pj1-f73.google.com with SMTP id 98e67ed59e1d1-3132c1942a1so2143608a91.2 for ; Thu, 10 Jul 2025 13:25:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1752179115; x=1752783915; 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=fb9W3gVIVOr+pacZm50pzm1Ccihhu5zduZDNsNPM1W224DFEDdRphXktJvHGLHvq5h B6h3T/OahgTIrAo+6WYJPv4H2b1o7253YdY+jMiOx8MQMcMNNE/FIMOZ1K2PcW7ZEtN4 en73YykXG+8n4DfrcWbvXM1cbxr9C6OPTXGGnxrwXfOCZvw0GBpTO9rMS08/DQ4Rm8Ef gxDQSHQa+lG2MisoN8a8jAJExIr+8AxKLPZ2c2XjEgMJ7JZRHbSLK9hxd+MPoB/yG/ny aoe1MeUdLBDa3xeqKzVbpSwdQziYysZH9XDa2xTxjVhMGkK5fI9Yj4FArdcTtQaor89c lekQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752179115; x=1752783915; 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=JTUILEkZxbY3DuL3xof+H/76it/CbmJeGNjt/vqGXwWkxCvfbjoR43MvfPIclz0Idj NjpJdGvc6c8VslIuTGhrHjHBTBnLu7oOSwcbug8e8I2NdKWLsdXucWm/vDFEy8ySz/nA tSuVNKTDTyTAgfBHREDNNTxsuX3vPYTsnFNoR0oK7oilKl3p6Aqtk1u7ZtjN4CztDH0G KXkEjxrHIqbhtc+OfFsTNk1JhGdq96+1onOwarp1cvb8EDwv9W3r847mHI8LH/sio8Tw sJkqrgetFlyTpAMIcwUHGnHsh/SaR0aHiCLxtv78naqX+vs6rvzwC6EESqQNq9dK9utq 8e1g== X-Forwarded-Encrypted: i=1; AJvYcCW8Iq+F3pPnrCSLGtDs2uVfPG1OwCUs1iTA3VJ1gft0cMUD9xqYZyiUsRum2gBhXzgNaeECE2aJy/6Q4Ok=@vger.kernel.org X-Gm-Message-State: AOJu0YyNyVMQdEX0zlAB5PbMTrQK6Zv103P4j1OIFteJW+GV/kbkaYt8 stEPnowsnYSQtsrKYrIS+0D+0D9Jw5EXy6X2ZeaQC7yzdL9UKuewAiMz7zy+rYdr5Fk6i3WRtNn UBXYk79pPIw== X-Google-Smtp-Source: AGHT+IHzBHYcOb0ZjZYgjdQfhaAwhHVz+PNWGSCKUC+dRMctJvIIfCbhj3frakOoN6CUI8TBd5c/GQZjKiSs X-Received: from pjbcz11.prod.google.com ([2002:a17:90a:d44b:b0:2fc:2c9c:880]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:48cf:b0:31c:260e:55e9 with SMTP id 98e67ed59e1d1-31c4f591cebmr13217a91.24.1752179114802; Thu, 10 Jul 2025 13:25:14 -0700 (PDT) Date: Thu, 10 Jul 2025 13:24:42 -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: <20250710202500.1959672-5-irogers@google.com> Subject: [PATCH v5 02/14] 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