From mboxrd@z Thu Jan 1 00:00:00 1970 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 3E56B26F287 for ; Tue, 19 Aug 2025 01:40:23 +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=1755567624; cv=none; b=eewQ0fux1iM7xLn3vU4DOa3jsTUHZ5KLYgBdBtrk5h1k3Qv1hl4iskestbpaRcBPdXLHM0cFZR0T3IKiPsuWSN0+XLy85nBG3t+ykTKeM8Esq8kWA4zUXzGxdRiEPFo4b8fzZAEZq9SCWTEQF2/wGII8BRITWbVIC+I3HHlO8rc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755567624; c=relaxed/simple; bh=T1elWucuGMMiywBQriuEk5+XEmE5bHmcFYClf0QygjU=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=iyNwT5UuEI4jwPlkTM8pG6GgXUyVDT10htzNt5tgiK3z413CnnRL61dHzjxYvqguUFbszFL8Yoe7sx5beZCj8QnV2ClKdlKrDBf7tK/CCw9GF3qUfY7s35KrAf/6Zm+E6TxKqH6Fap4gDdUn3pMK8mQEisbppYvp/yDZ9eSI8g4= 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=T8qKWbCR; 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="T8qKWbCR" Received: by mail-pj1-f74.google.com with SMTP id 98e67ed59e1d1-32326bd7502so4258603a91.2 for ; Mon, 18 Aug 2025 18:40:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1755567623; x=1756172423; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=MQF3nN0QauEUkhCRy8Eabiox2XnlWSfk2RO5PcO3ql4=; b=T8qKWbCRH5aJfh/Rp86tZEX8KtwELVYejFZdxdFR0uIYxm4BxtQW7Uav+LiaKbKpmz qbI84ljx8R0oI2E1MVdfFmYQ31nD4oB+IuD/WhMAk2GGtqO4248kqxzcCO9jvbG6ImMd IP8WqZsW+Y3AQBirUPyijBe3GzczJ0f6TvO1dyeJEoINFiXgDU1a04c/XoaDGRQEBGvG A0f0Y3ExkVbQf1/XJJ1jCNkQQfR/WK9bnVxGDKY8/b6k9Ww7NA3CI5AAFEbLh7IVbCjv d3uPKRnwkTdmBKf3Zyy9+v9e4IXS+zmA08GpXOXKXHqKte9fJhiTJWCbvdO7DphZyAYx i0+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755567623; x=1756172423; h=cc: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=MQF3nN0QauEUkhCRy8Eabiox2XnlWSfk2RO5PcO3ql4=; b=L+SdIbZW7UG5oNzhGvWCz6sYh5/EsIhRqRYmWeQzi+J3nGo+5AT0xlTCwzn7PGIUSe Ty9CNpWhIZfjgGyCB0O+GmkO87wVNR3e3f/frVKixTOOj5PI5aQccqfKV/ghh+2uB5pR nWzQrdBQh+guHH4OmTQw5kXn5tSDb2Bkdc6PnCnK0c/R85ODOOhcf4WcZBTIOsXrH4A0 bNlPLi5Hs6qQosAPBJOc4TCpVMTdwVpGZmf4CoHsEo+nnVjCki2rrImrQQN645lUiL4z XRZQFYRxMVDNWjfgjyxlTMDhgashvLfOHa89tB27ve45OPjHP6c2SGm7/p+D29qe+il5 yMuA== X-Forwarded-Encrypted: i=1; AJvYcCWlUjgbbEK3sMLr1ucb88PwyRpwUMMGedV/coTUTgMNuGx2ljHf64XTtthRbZ98+SUeS6kCy+SPS6ODEDV0FbM1@vger.kernel.org X-Gm-Message-State: AOJu0Yw3h+kv98p9OFA5vZbdkTTJceBBzFciIaIFODT4S2YIHh5ecwUF FKdna7YMxzezUFgnz29cM7hzyRkq3T/GAMX290YyPOZuQ5adi9FOSnlb51tjwFsX5FATYfZLSqT RiS0lhbgRlg== X-Google-Smtp-Source: AGHT+IHYaW94GeIGsQ8WsWTvn0g4KTmdGfV8Cs4z9ozPJ1LK11cFfbC9bH5R++PXeY3kD6SATY84vYN5zbEH X-Received: from pjd4.prod.google.com ([2002:a17:90b:54c4:b0:311:485b:d057]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:2584:b0:311:d05c:936 with SMTP id 98e67ed59e1d1-32476b009e2mr1303198a91.17.1755567622505; Mon, 18 Aug 2025 18:40:22 -0700 (PDT) Date: Mon, 18 Aug 2025 18:39:33 -0700 In-Reply-To: <20250819013941.209033-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250819013941.209033-1-irogers@google.com> X-Mailer: git-send-email 2.51.0.rc1.167.g924127e9c0-goog Message-ID: <20250819013941.209033-4-irogers@google.com> Subject: [PATCH v10 03/11] perf python: Add basic PMU abstraction and pmus sequence 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 Cc: Arnaldo Carvalho de Melo Content-Type: text/plain; charset="UTF-8" Add an ability to iterate over PMUs and a basic PMU type then can just show the PMU's name. An example usage: ``` $ python Python 3.12.9 (main, Feb 5 2025, 01:31:18) [GCC 14.2.0] on linux >>> import perf >>> list(perf.pmus()) [pmu(cpu), pmu(breakpoint), pmu(cstate_core), pmu(cstate_pkg), pmu(hwmon_acpitz), pmu(hwmon_ac), pmu(hwmon_bat0), pmu(hwmon_coretemp), pmu(hwmon_iwlwifi_1), pmu(hwmon_nvme), pmu(hwmon_thinkpad), pmu(hwmon_ucsi_source_psy_usbc000_0), pmu(hwmon_ucsi_source_psy_usbc000_0), pmu(i915), pmu(intel_bts), pmu(intel_pt), pmu(kprobe), pmu(msr), pmu(power), pmu(software), pmu(tool), pmu(tracepoint), pmu(uncore_arb), pmu(uncore_cbox_0), pmu(uncore_cbox_1), pmu(uncore_cbox_2), pmu(uncore_cbox_3), pmu(uncore_cbox_4), pmu(uncore_cbox_5), pmu(uncore_cbox_6), pmu(uncore_cbox_7), pmu(uncore_clock), pmu(uncore_imc_free_running_0), pmu(uncore_imc_free_running_1), pmu(uprobe)] ``` Signed-off-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Reviewed-by: Howard Chu --- tools/perf/util/python.c | 140 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 140 insertions(+) diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index 127934af4828..6f9728d365ae 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -649,6 +649,138 @@ static int pyrf_thread_map__setup_types(void) return PyType_Ready(&pyrf_thread_map__type); } +/** + * A python wrapper for perf_pmus that are globally owned by the pmus.c code. + */ +struct pyrf_pmu { + PyObject_HEAD + + struct perf_pmu *pmu; +}; + +static void pyrf_pmu__delete(struct pyrf_pmu *ppmu) +{ + Py_TYPE(ppmu)->tp_free((PyObject *)ppmu); +} + +static PyObject *pyrf_pmu__name(PyObject *self) +{ + struct pyrf_pmu *ppmu = (void *)self; + + return PyUnicode_FromString(ppmu->pmu->name); +} + +static PyObject *pyrf_pmu__repr(PyObject *self) +{ + struct pyrf_pmu *ppmu = (void *)self; + + return PyUnicode_FromFormat("pmu(%s)", ppmu->pmu->name); +} + +static const char pyrf_pmu__doc[] = PyDoc_STR("perf Performance Monitoring Unit (PMU) object."); + +static PyMethodDef pyrf_pmu__methods[] = { + { + .ml_name = "name", + .ml_meth = (PyCFunction)pyrf_pmu__name, + .ml_flags = METH_NOARGS, + .ml_doc = PyDoc_STR("Name of the PMU including suffixes.") + }, + { .ml_name = NULL, } +}; + +/** The python type for a perf.pmu. */ +static PyTypeObject pyrf_pmu__type = { + PyVarObject_HEAD_INIT(NULL, 0) + .tp_name = "perf.pmu", + .tp_basicsize = sizeof(struct pyrf_pmu), + .tp_dealloc = (destructor)pyrf_pmu__delete, + .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, + .tp_doc = pyrf_pmu__doc, + .tp_methods = pyrf_pmu__methods, + .tp_str = pyrf_pmu__name, + .tp_repr = pyrf_pmu__repr, +}; + +static int pyrf_pmu__setup_types(void) +{ + pyrf_pmu__type.tp_new = PyType_GenericNew; + return PyType_Ready(&pyrf_pmu__type); +} + + +/** A python iterator for pmus that has no equivalent in the C code. */ +struct pyrf_pmu_iterator { + PyObject_HEAD + struct perf_pmu *pmu; +}; + +static void pyrf_pmu_iterator__dealloc(struct pyrf_pmu_iterator *self) +{ + Py_TYPE(self)->tp_free((PyObject *) self); +} + +static PyObject *pyrf_pmu_iterator__new(PyTypeObject *type, PyObject *args __maybe_unused, + PyObject *kwds __maybe_unused) +{ + struct pyrf_pmu_iterator *itr = (void *)type->tp_alloc(type, 0); + + if (itr != NULL) + itr->pmu = perf_pmus__scan(/*pmu=*/NULL); + + return (PyObject *) itr; +} + +static PyObject *pyrf_pmu_iterator__iter(PyObject *self) +{ + Py_INCREF(self); + return self; +} + +static PyObject *pyrf_pmu_iterator__iternext(PyObject *self) +{ + struct pyrf_pmu_iterator *itr = (void *)self; + struct pyrf_pmu *ppmu; + + if (itr->pmu == NULL) { + PyErr_SetNone(PyExc_StopIteration); + return NULL; + } + // Create object to return. + ppmu = PyObject_New(struct pyrf_pmu, &pyrf_pmu__type); + if (ppmu) { + ppmu->pmu = itr->pmu; + // Advance iterator. + itr->pmu = perf_pmus__scan(itr->pmu); + } + return (PyObject *)ppmu; +} + +/** The python type for the PMU iterator. */ +static PyTypeObject pyrf_pmu_iterator__type = { + PyVarObject_HEAD_INIT(NULL, 0) + .tp_name = "pmus.iterator", + .tp_doc = "Iterator for the pmus string sequence.", + .tp_basicsize = sizeof(struct pyrf_pmu_iterator), + .tp_itemsize = 0, + .tp_flags = Py_TPFLAGS_DEFAULT, + .tp_new = pyrf_pmu_iterator__new, + .tp_dealloc = (destructor) pyrf_pmu_iterator__dealloc, + .tp_iter = pyrf_pmu_iterator__iter, + .tp_iternext = pyrf_pmu_iterator__iternext, +}; + +static int pyrf_pmu_iterator__setup_types(void) +{ + return PyType_Ready(&pyrf_pmu_iterator__type); +} + +static PyObject *pyrf__pmus(PyObject *self, PyObject *args) +{ + // Calling the class creates an instance of the iterator. + return PyObject_CallObject((PyObject *) &pyrf_pmu_iterator__type, /*args=*/NULL); +} + struct pyrf_counts_values { PyObject_HEAD @@ -1701,6 +1833,12 @@ static PyMethodDef perf__methods[] = { .ml_flags = METH_VARARGS, .ml_doc = PyDoc_STR("Parse a string of events and return an evlist.") }, + { + .ml_name = "pmus", + .ml_meth = (PyCFunction) pyrf__pmus, + .ml_flags = METH_NOARGS, + .ml_doc = PyDoc_STR("Returns a sequence of pmus.") + }, { .ml_name = NULL, } }; @@ -1728,6 +1866,8 @@ PyMODINIT_FUNC PyInit_perf(void) pyrf_evsel__setup_types() < 0 || pyrf_thread_map__setup_types() < 0 || pyrf_cpu_map__setup_types() < 0 || + pyrf_pmu_iterator__setup_types() < 0 || + pyrf_pmu__setup_types() < 0 || pyrf_counts_values__setup_types() < 0) return module; -- 2.51.0.rc1.167.g924127e9c0-goog