From nobody Sat Nov 30 04:36:49 2024 Received: from mail-wm1-f48.google.com (mail-wm1-f48.google.com [209.85.128.48]) (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 D741D1BDAB8 for ; Thu, 12 Sep 2024 15:12:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.48 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726153965; cv=none; b=cVbpvJ0xy9e4M9sgMhmhXOGCTipJnU2NQpJyx373onibpvFi5mJUWNxqRkURCmaUVFBS+PB7wozQBoLcK3xTyQNIOvwfvfHcSOHtnEXWO2kM98UjgHhSXtPmOMRyRkY2YyeKV/lfvx4T6tkUlEOphT7DAPEHR7qpsM3HMX/0Kj0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726153965; c=relaxed/simple; bh=HzVLxxNDCC58aJIsJSeqkv1E21FxH0Gn8OwOLut/Kr4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=IcwGOjPpAUhOk8Vd4gSWm9M/x+wvIXqIYlfWdYlnwzfWgm2Rh5LGPCScn0EL7YUmKCny0XwA4xM17/zL+ZN5MPfwc44Zj8gIDh8JixnycLlwn++IjP+Kd3Bu3S3NXuO0EjghaMv0Z1MeaiYP0r+PdAVqk69zy3O36A2CI8trWwo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=ltLCRag6; arc=none smtp.client-ip=209.85.128.48 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="ltLCRag6" Received: by mail-wm1-f48.google.com with SMTP id 5b1f17b1804b1-42cae6bb895so10289025e9.1 for ; Thu, 12 Sep 2024 08:12:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1726153962; x=1726758762; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=qGGfB6w3kWS1PGl7UZ8XD03PjQ67uo73eIy0DvIbGgM=; b=ltLCRag65QQgrxT0EZksyH6zpTHcQSouOON6PbB2rm3gPI0eUGordxuJoLyzLadJSL /PnI3zbnNzZ7OGGb3AVSC13EPnSWJHcugXSg6wH96gunJZ05LBm7fBOdrdMDTm5oa9ED 34Z0GXK/WB1VQEJKaG5ESY9z+CMu6X2CjMTVBo48FLe2eKXdx96A0wYfHQ/UXyI4lVxf V78e5MrJKjCTe3YNzWVK/zhSku1Nv6FKfH48ytj00pg+yKwiwRTqx+FNKvAK5jLGCNvy 3ViQhxE2horxwnMNWMyAa+BK6znBILNlfuj4b2bSjEA5wpfZOs0Nj4Wz62i3hqKYQ5F0 1gWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726153962; x=1726758762; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=qGGfB6w3kWS1PGl7UZ8XD03PjQ67uo73eIy0DvIbGgM=; b=whSqqiiEEQiYlu8uoM27m7lxtCENDq+9qZiIY6YYur2/N3E9rLTMejfyQs96pP+qR/ bCAMQQJA6tCoAt0Or+Sks1umTTmZC7FH8rJ99jB09m/qGVs3brAbAk4kz5/TZwwXHAOb Ubn8ikpv8127y0QMmUL5MtyHp+1csJt94D28kE5zz7EA9DQBn98Rn1SDs5vpGZBHSqlw YX619ZUgesTymJ8+od6mxB1Q5xQ3frdYlBzyfNFs+IbgHZ7fBYQk69LRGV9qODgYj7ru EyTweieli444ppp/3PrVzx3A5zqzn1rzqRRmFIiP1PUgrR7iA+kw+Zk92gwerlLjpLGF iXnw== X-Forwarded-Encrypted: i=1; AJvYcCV5qP+SnRJIwBoQCRzYgB5WPcX3F3/RIXsvpI4/07Da10Uoxx1PZqY/XM7kOxsneErDOzZaA7v7vn3zJx0=@vger.kernel.org X-Gm-Message-State: AOJu0YwuS/oDiQjkvS9qmtju/keYCDbZcPL5GEfay+WpufQhLNRtbkSv brBa7BWxaeFEgv/CmgkfEDNLi2h3cx9mA+S9+M1ZU6fJn7JaW7ObsZIsORhua94= X-Google-Smtp-Source: AGHT+IHHXQ3L4ph9W3/LKP4w6PXlKUgz1FmPRZxqdPxBCXFwutCTMRNnHYk9J1u/W+htrP1UYDcjqA== X-Received: by 2002:a05:600c:35c1:b0:42c:bfb1:766e with SMTP id 5b1f17b1804b1-42cdb55006fmr26068025e9.21.1726153962042; Thu, 12 Sep 2024 08:12:42 -0700 (PDT) Received: from localhost.localdomain ([89.47.253.130]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-42cb0dbcb6bsm171928845e9.30.2024.09.12.08.12.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Sep 2024 08:12:41 -0700 (PDT) From: James Clark To: linux-perf-users@vger.kernel.org, gankulkarni@os.amperecomputing.com, coresight@lists.linaro.org, leo.yan@arm.com, scclevenger@os.amperecomputing.com Cc: James Clark , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , "Liang, Kan" , Suzuki K Poulose , Mike Leach , John Garry , Will Deacon , Leo Yan , Ben Gainey , Ruidong Tian , Benjamin Gray , Mathieu Poirier , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 3/7] perf scripting python: Add function to get a config value Date: Thu, 12 Sep 2024 16:11:34 +0100 Message-Id: <20240912151143.1264483-4-james.clark@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240912151143.1264483-1-james.clark@linaro.org> References: <20240912151143.1264483-1-james.clark@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This can be used to get config values like which objdump Perf uses for disassembly. Signed-off-by: James Clark Reviewed-by: Leo Yan --- .../perf/Documentation/perf-script-python.txt | 2 +- .../scripts/python/Perf-Trace-Util/Context.c | 11 ++++++++++ tools/perf/util/config.c | 22 +++++++++++++++++++ tools/perf/util/config.h | 1 + 4 files changed, 35 insertions(+), 1 deletion(-) diff --git a/tools/perf/Documentation/perf-script-python.txt b/tools/perf/D= ocumentation/perf-script-python.txt index 13e37e9385ee..27a1cac6fe76 100644 --- a/tools/perf/Documentation/perf-script-python.txt +++ b/tools/perf/Documentation/perf-script-python.txt @@ -624,7 +624,7 @@ as perf_trace_context.perf_script_context . perf_set_itrace_options(context, itrace_options) - set --itrace options i= f they have not been set already perf_sample_srcline(context) - returns source_file_name, line_number perf_sample_srccode(context) - returns source_file_name, line_number, sou= rce_line - + perf_config_get(config_name) - returns the value of the named config item= , or None if unset =20 Util.py Module ~~~~~~~~~~~~~~ diff --git a/tools/perf/scripts/python/Perf-Trace-Util/Context.c b/tools/pe= rf/scripts/python/Perf-Trace-Util/Context.c index 3954bd1587ce..01f54d6724a5 100644 --- a/tools/perf/scripts/python/Perf-Trace-Util/Context.c +++ b/tools/perf/scripts/python/Perf-Trace-Util/Context.c @@ -12,6 +12,7 @@ #define PY_SSIZE_T_CLEAN =20 #include +#include "../../../util/config.h" #include "../../../util/trace-event.h" #include "../../../util/event.h" #include "../../../util/symbol.h" @@ -182,6 +183,15 @@ static PyObject *perf_sample_srccode(PyObject *obj, Py= Object *args) return perf_sample_src(obj, args, true); } =20 +static PyObject *__perf_config_get(PyObject *obj, PyObject *args) +{ + const char *config_name; + + if (!PyArg_ParseTuple(args, "s", &config_name)) + return NULL; + return Py_BuildValue("s", perf_config_get(config_name)); +} + static PyMethodDef ContextMethods[] =3D { #ifdef HAVE_LIBTRACEEVENT { "common_pc", perf_trace_context_common_pc, METH_VARARGS, @@ -199,6 +209,7 @@ static PyMethodDef ContextMethods[] =3D { METH_VARARGS, "Get source file name and line number."}, { "perf_sample_srccode", perf_sample_srccode, METH_VARARGS, "Get source file name, line number and line."}, + { "perf_config_get", __perf_config_get, METH_VARARGS, "Get perf config en= try"}, { NULL, NULL, 0, NULL} }; =20 diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c index 7a650de0db83..68f9407ca74b 100644 --- a/tools/perf/util/config.c +++ b/tools/perf/util/config.c @@ -912,6 +912,7 @@ void set_buildid_dir(const char *dir) struct perf_config_scan_data { const char *name; const char *fmt; + const char *value; va_list args; int ret; }; @@ -939,3 +940,24 @@ int perf_config_scan(const char *name, const char *fmt= , ...) =20 return d.ret; } + +static int perf_config_get_cb(const char *var, const char *value, void *da= ta) +{ + struct perf_config_scan_data *d =3D data; + + if (!strcmp(var, d->name)) + d->value =3D value; + + return 0; +} + +const char *perf_config_get(const char *name) +{ + struct perf_config_scan_data d =3D { + .name =3D name, + .value =3D NULL, + }; + + perf_config(perf_config_get_cb, &d); + return d.value; +} diff --git a/tools/perf/util/config.h b/tools/perf/util/config.h index 2e5e808928a5..9971313d61c1 100644 --- a/tools/perf/util/config.h +++ b/tools/perf/util/config.h @@ -30,6 +30,7 @@ typedef int (*config_fn_t)(const char *, const char *, vo= id *); int perf_default_config(const char *, const char *, void *); int perf_config(config_fn_t fn, void *); int perf_config_scan(const char *name, const char *fmt, ...) __scanf(2, 3); +const char *perf_config_get(const char *name); int perf_config_set(struct perf_config_set *set, config_fn_t fn, void *data); int perf_config_int(int *dest, const char *, const char *); --=20 2.34.1