From nobody Sat Oct 11 11:47:17 2025 Received: from mail-pg1-f202.google.com (mail-pg1-f202.google.com [209.85.215.202]) (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 4DD0E22C355 for ; Wed, 11 Jun 2025 03:46:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749613586; cv=none; b=LfaEaZ3DjgLGv4t/N35H32gfW1+0hyU3RS/zr3ax0e6/aRa1mpzLitXeC/rUUle8IENCG97avQIRM92yK/MfoiM0xN5MI/Jyfne9oSQgcK6Ijqk0/PiwqNomn43ulv0XAbpR+bLXS8DXqjbIVTUd6EvGTZlJN9/pWBdW9QrW4jY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749613586; c=relaxed/simple; bh=7yn1cJh+rjuuX3SqnuzbrQ54eqVxAnel/00kJcXeY/0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=mJYCQVhdaORaazLzh9Sq32NBCg5vOnILbYg0xSbtBppnJiu9GoP0uc3YGemDkbv2zNK8VNQDJy1GhXsQutuUXYhbeRTCulJu3fRwb+9Atnm3+HNi5QZxjQsou+czh2YpnURnf560mtNDRdkoadTfGXoJ7YFT4k0KGfYR7bXAPkk= 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=XeL9pvPT; arc=none smtp.client-ip=209.85.215.202 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="XeL9pvPT" Received: by mail-pg1-f202.google.com with SMTP id 41be03b00d2f7-b090c7c2c6aso3558223a12.0 for ; Tue, 10 Jun 2025 20:46:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1749613585; x=1750218385; 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=PGa6PzMTD/s+DbuNSHl9f5eQ82Zq4UEJ4qGkP0/iy98=; b=XeL9pvPTBi8AIT5O+MjlTGZibnsEXNe0jzZBfNWME0YOswATZXXb0cN4I9kGfTBBN2 hLX82HVqInOwZyLUeT1fSWpct1TGCkZ4HIQWchnJjmCcu+YCpF3h6BiMEmi+GABCXL4v hUKluqRKVoF+PU1SjCL/60BngHs6bobqIUJf5SwbklAUob/62dVQBZD7aDi4/y6rV67N Re0Cx1P1V28IrnJM5CsxBJxFsjwe++IEkNEEVg3okRoj+2p9vpVGTSwHuWoLzeb924Hh DGJqJ6Vz/c+WwwV9dj4Lak6tpErS78sX4Cuo2Yhq9pLmYPxTTx4imXpXuAmEMyeDGpRP 3hCw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749613585; x=1750218385; 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=PGa6PzMTD/s+DbuNSHl9f5eQ82Zq4UEJ4qGkP0/iy98=; b=R8mdxW6EEkSDlulPz/cjPglphQ5mYHW+Zfnbs2zxTCRla3a6+lpflp6G6Az9pbPQ1P mwVXVkabEiH/KUcz64rbddeam2PFq4ROV1hwAPbxn/L8NlVDyEzlZshU5eQZO7q4mwLp C8bnT/2j6e2jt/YBNYiCNzFRaOfaZYRnYMxi7Z55v4Zv2i4yE/rmBf/Q0pQIWNKUD3sM WthnAQ77vkAcfJ5mfa/G+Q2l8ZZ5Y+6C4XyDy39ayet1y6m8m7rwNHUmkcwSPJocjHPF gcMDueExEgoEQcvXhooQy5nbIs6O3yZkPyO0mRX/tpUrMLnZPOUIniceymW3kH5ar9XP io8Q== X-Forwarded-Encrypted: i=1; AJvYcCUrfKS1JMeuYqeaHrzn2ld+e0iNO4/p3wyzgbj15nqzAVqT/Smco8D4khyrCEHvrOu4BXwLKqMjHdwlovc=@vger.kernel.org X-Gm-Message-State: AOJu0YxDpYQjEf5+Iqlhj0A8RipB7j8YDvzOGBJy0nTtBl8Z/AUAGH9B rECSrPeTpxwHUHwC3l6BWVfIWcMusXUXQsILkCiKtr/ZWrDxqOmkMvYrQQcfRTj1yJbWpOkJE3n o8X9hJJLeig== X-Google-Smtp-Source: AGHT+IFZJviseCWiStw2if3ggLSIKk/0L38ASH3h5Rp/Bkc0PQu2790SIC+c8pJEKnEBMhP+zWf9O397IjgB X-Received: from pghf16.prod.google.com ([2002:a63:e310:0:b0:b2e:c15e:3eb7]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:e608:b0:21f:545e:84f0 with SMTP id adf61e73a8af0-21f89145850mr1864923637.40.1749613584690; Tue, 10 Jun 2025 20:46:24 -0700 (PDT) Date: Tue, 10 Jun 2025 20:45:21 -0700 In-Reply-To: <20250611034529.508842-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250611034529.508842-1-irogers@google.com> X-Mailer: git-send-email 2.50.0.rc0.642.g800a2b2222-goog Message-ID: <20250611034529.508842-8-irogers@google.com> Subject: [PATCH v1 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.rc0.642.g800a2b2222-goog