From nobody Fri Oct 10 08:24:28 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 C97891E47A3 for ; Mon, 16 Jun 2025 05:15:40 +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=1750050942; cv=none; b=AqWhtAxIKz46Yc/o1xbxobmoYRWTPe2ka13fvGv6cIuGijrdXtbO9ymvmrLB4IyyfrxhKlAqD3aTKg0B0n+d0nEH4F8/10KlWx4zImFQLmoWBUtS7hSWWhHvlpn571xwucY4cd2YRAmVf5+Ysp0wxktH5aWC5g++4QgdLYPL2XQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750050942; c=relaxed/simple; bh=zZY5QdAaatWoVBW7I7LQ11kD76DX+GBxtTOi8p7XfOs=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=iXoEhtIXyLPSXPnypwD/q0y0ExcMUESHzvBD2M0OZviWDyumjIKeY6h7BLnV8p60VZmoI6lUGR2xM4IedBHc0wCnIPFDRbojjMkfrPeBm1Z4vja7ODK+DrG7LhH9Kbmepyo0meu+bQQIuKEL4w5zB0/cWuXSFHGRZUAImGZPh4Q= 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=WGJMyN2k; 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="WGJMyN2k" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-b2eeff19115so5273962a12.0 for ; Sun, 15 Jun 2025 22:15:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1750050940; x=1750655740; 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=TPESPEzAQJj2q7drTkMDX/Th9kHricV7LFea55YSIjA=; b=WGJMyN2kAFztVPM0q8EEUB+VNz6M5wFwR65nz9skEk0KvUKFtDZtpLL2doUShTfkac cGELlrg7MwJslCX2kU16P8YkqGzWy3TJUNCISIY4J/oZy8sST+7+B76nDhKiMsKtDKFE eMY3qMM/BZhMkI45cIiwWVXcdTMhPYQ3dz4joCm1JChY7qkmGg3vjRVEEJmcJQn7XG1N DdzEZQF66uN1XEXcvCcA4wbBDGBIi8TE1M/5Nxk94WrEKzoJFzjdmJtf41fO51DTZpbD /TINIdPTuYMbfBtCQtpgJZhL64bHTwGOlR1vuoS6Xm8dkXZfL3nlqOYggVvzcQfAO9nS PgYg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1750050940; x=1750655740; 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=TPESPEzAQJj2q7drTkMDX/Th9kHricV7LFea55YSIjA=; b=RVT78v+nmyYTYwq9BorXskGJT+uegSCUkpX5BUT6GLvY2HLj6LWGq6ojAC1b9goPGD jthafv7nXfHurc5bHIsZxslZukMe6F8TYJiXRW2RwqyD7mHH+gwHkLeBnobF7iXRWFve QdFqX9LyDB2yYh2V+bh3DSWX/zIKQDYAvbpZs1VZe29gJCF0RjMiyXb2G0+wAwu+1f+M KmXMtOdua/sLVnl+akZ/PYKN41Zj9CaeBumchOOoZ8TBkmeUbw7LJkMFXJsGD8IeJW2R hesSQYDQvUOJFTW7mRicjI2vCngxOp+6s46bcHyiw8lIiweu7LUT6CFaiX3gYvqkN1j2 D38w== X-Forwarded-Encrypted: i=1; AJvYcCXvOPibn7iw/2ywK9JmpK31Sg8cKbGkxGsTZNAy1uH94ZTn4496mypI52S50Dy4sOEaNXJyGpkyGLn2oIQ=@vger.kernel.org X-Gm-Message-State: AOJu0Yz0AInXuDh4jluiV2KmZtlwQ1+4ZamVbWVvRTlBEQzXUynH9hyB b49o0oE2/UveJgwva+Wr2g0vdo7pUn+X5VSpJtm4OunRRpUNsb98woMzKjhCRkUFVzteSa2kSvY O7v9Tgl3jSg== X-Google-Smtp-Source: AGHT+IEqUCk6kDNnznwLR7QswDVgEKNTjE47vrZVlVegCSdLW0pjKFX8we9erSxwtSxzpV8I2/gJIE8scUhO X-Received: from pgbfe2.prod.google.com ([2002:a05:6a02:2882:b0:b2c:3c0e:f01c]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a21:7a90:b0:1f5:70d8:6a98 with SMTP id adf61e73a8af0-21fbd295a7fmr11528932637.0.1750050940348; Sun, 15 Jun 2025 22:15:40 -0700 (PDT) Date: Sun, 15 Jun 2025 22:14:52 -0700 In-Reply-To: <20250616051500.1047173-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250616051500.1047173-1-irogers@google.com> X-Mailer: git-send-email 2.50.0.rc2.696.g1fc2a0284f-goog Message-ID: <20250616051500.1047173-8-irogers@google.com> Subject: [PATCH v3 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.rc2.696.g1fc2a0284f-goog