From patchwork Thu Dec 21 16:10:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Rostedt X-Patchwork-Id: 182346 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7300:2483:b0:fb:cd0c:d3e with SMTP id q3csp522158dyi; Thu, 21 Dec 2023 08:19:21 -0800 (PST) X-Google-Smtp-Source: AGHT+IESlJpyfvXqapSFqk//1JqwVAMM/0poc8EOi4PUOqEyVI3FcbNE589Khc+CPJapv1OJBVox X-Received: by 2002:a05:6a00:2296:b0:6d3:f68b:3439 with SMTP id f22-20020a056a00229600b006d3f68b3439mr10094977pfe.14.1703175560867; Thu, 21 Dec 2023 08:19:20 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1703175560; cv=none; d=google.com; s=arc-20160816; b=izhNo5UnlY1GnF3L1mQTprkg77t+6j4cyJ43vEvvhQ8wKZlF5g6brBpurwjUMs2ezh yPLAHAh7F32PnBEL9NLqH14ycTt3VcBIgWjbyxA9Ob8pyL4Qux+t+kc2VMUMP561eoJa RpUxT10VpcvH+0j54m5TWpqkgSN21YHaEaWavIyl4sIsc8sUdb+XYzi+KNjBPINxlBWj S5n/GuDaCERpSuQr4Zo0/fu4gTIOopFSD5jCC1VsIJjGuTyyJZlq4G12tRAOh+cTmRD1 twBhj5QfRcryo2S8kjT65FK9cTukXHDPvff2ZokgFLAaEZfhJ4sDtYNJhFtdbkeC97uE T/1A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:list-unsubscribe:list-subscribe:list-id:precedence :references:subject:cc:to:from:date:user-agent:message-id; bh=lGPPxRdqME4e6a4LKtn6wPEkI6zFpV2yKIOWqhqLYsc=; fh=e3UoLP0GGIVG/JuDivUt2G6X10h9sIOfzt1IJTPiLuw=; b=l9bnu+O6Xh0P8hq85XkFd7AEQ6ozRicIQ7otSNlQS0MD+q1e4FQHfuWBKCkL6phdam k+9PpEVyb8AFtiChXByFqZ1+0EBvAZ9kqRzqNg6Vo+0DlEwjR8UexTyc719Xv5bdIi/r S1CyyE2kkE3w5c2TdolRXa4YLnc/e9hHtnmVkTOJqgFY79qJBWOOZ93eIHxYbuWBaTHn MaybPWfX43Q9OqCQoFzYpYRBv2Dob+m42Eb72bLAEZgodo8hAtuix9OsgvMtwzxfHhxx NWvEgcpybgLYW10fpPV0vu2leMC8MKDrQVP3KFlTUJgAsirzWIN5qbIUt0XIB1OqrICO ZFQg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel+bounces-8738-ouuuleilei=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) smtp.mailfrom="linux-kernel+bounces-8738-ouuuleilei=gmail.com@vger.kernel.org" Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org. [139.178.88.99]) by mx.google.com with ESMTPS id f25-20020a631f19000000b005c6ef013589si1732144pgf.641.2023.12.21.08.19.20 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Dec 2023 08:19:20 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-8738-ouuuleilei=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel+bounces-8738-ouuuleilei=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) smtp.mailfrom="linux-kernel+bounces-8738-ouuuleilei=gmail.com@vger.kernel.org" Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id 3220028CD2E for ; Thu, 21 Dec 2023 16:13:58 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id A9E8F768E0; Thu, 21 Dec 2023 16:10:04 +0000 (UTC) X-Original-To: linux-kernel@vger.kernel.org Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E2C7965188 for ; Thu, 21 Dec 2023 16:10:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 770D2C433CA; Thu, 21 Dec 2023 16:10:02 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.97) (envelope-from ) id 1rGLda-000000041N5-20d0; Thu, 21 Dec 2023 11:11:06 -0500 Message-ID: <20231221161106.268425007@goodmis.org> User-Agent: quilt/0.67 Date: Thu, 21 Dec 2023 11:10:38 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , Tzvetomir Stoyanov , Vincent Donnefort , Kent Overstreet Subject: [for-next][PATCH 14/16] ringbuffer/selftest: Add basic selftest to test changing subbuf order References: <20231221161024.478795180@goodmis.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1785909017157361865 X-GMAIL-MSGID: 1785909017157361865 From: "Steven Rostedt (Google)" Add a self test that will write into the trace buffer with differ trace sub buffer order sizes. Link: https://lore.kernel.org/linux-trace-kernel/20231219185631.520496304@goodmis.org Cc: Masami Hiramatsu Cc: Mark Rutland Cc: Mathieu Desnoyers Cc: Andrew Morton Cc: Tzvetomir Stoyanov Cc: Vincent Donnefort Cc: Kent Overstreet Signed-off-by: Steven Rostedt (Google) --- .../ftrace/test.d/00basic/ringbuffer_order.tc | 95 +++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/00basic/ringbuffer_order.tc diff --git a/tools/testing/selftests/ftrace/test.d/00basic/ringbuffer_order.tc b/tools/testing/selftests/ftrace/test.d/00basic/ringbuffer_order.tc new file mode 100644 index 000000000000..ecbcc810e6c1 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/00basic/ringbuffer_order.tc @@ -0,0 +1,95 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Change the ringbuffer sub-buffer order +# requires: buffer_subbuf_order +# flags: instance + +get_buffer_data_size() { + sed -ne 's/^.*data.*size:\([0-9][0-9]*\).*/\1/p' events/header_page +} + +get_buffer_data_offset() { + sed -ne 's/^.*data.*offset:\([0-9][0-9]*\).*/\1/p' events/header_page +} + +get_event_header_size() { + type_len=`sed -ne 's/^.*type_len.*:[^0-9]*\([0-9][0-9]*\).*/\1/p' events/header_event` + time_len=`sed -ne 's/^.*time_delta.*:[^0-9]*\([0-9][0-9]*\).*/\1/p' events/header_event` + array_len=`sed -ne 's/^.*array.*:[^0-9]*\([0-9][0-9]*\).*/\1/p' events/header_event` + total_bits=$((type_len+time_len+array_len)) + total_bits=$((total_bits+7)) + echo $((total_bits/8)) +} + +get_print_event_buf_offset() { + sed -ne 's/^.*buf.*offset:\([0-9][0-9]*\).*/\1/p' events/ftrace/print/format +} + +event_header_size=`get_event_header_size` +print_header_size=`get_print_event_buf_offset` + +data_offset=`get_buffer_data_offset` + +marker_meta=$((event_header_size+print_header_size)) + +make_str() { + cnt=$1 + printf -- 'X%.0s' $(seq $cnt) +} + +write_buffer() { + size=$1 + + str=`make_str $size` + + # clear the buffer + echo > trace + + # write the string into the marker + echo $str > trace_marker + + echo $str +} + +test_buffer() { + orde=$1 + page_size=$((4096< buffer_subbuf_order + test_buffer $a +done + +echo $ORIG > buffer_subbuf_order +