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[2604:1380:45e3:2400::1]) by mx.google.com with ESMTPS id q5-20020a17090aa00500b002839db82641si13570713pjp.85.2023.12.15.09.59.17 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 Dec 2023 09:59:17 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-1490-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel+bounces-1490-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-1490-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 2D5BE283C66 for ; Fri, 15 Dec 2023 17:59:11 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id B913B5F86A; Fri, 15 Dec 2023 17:54:59 +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 E5E364AF9F; Fri, 15 Dec 2023 17:54:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 79EC7C433CA; Fri, 15 Dec 2023 17:54:57 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.97) (envelope-from ) id 1rECPb-00000002wUI-2DGG; Fri, 15 Dec 2023 12:55:47 -0500 Message-ID: <20231215175547.301853276@goodmis.org> User-Agent: quilt/0.67 Date: Fri, 15 Dec 2023 12:55:16 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , Tzvetomir Stoyanov , Vincent Donnefort , Kent Overstreet Subject: [PATCH v4 14/15] ringbuffer/selftest: Add basic selftest to test changing subbuf order References: <20231215175502.106587604@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: 1785371723430063944 X-GMAIL-MSGID: 1785371723430063944 From: "Steven Rostedt (Google)" Add a self test that will write into the trace buffer with differ trace sub buffer order sizes. 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 +