From patchwork Mon Dec 9 00:01:14 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexei Starovoitov X-Patchwork-Id: 1205791 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47WNdh3W28z9sR0 for ; Mon, 9 Dec 2019 11:01:28 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726983AbfLIABZ convert rfc822-to-8bit (ORCPT ); Sun, 8 Dec 2019 19:01:25 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:49682 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726956AbfLIABX (ORCPT ); Sun, 8 Dec 2019 19:01:23 -0500 Received: from pps.filterd (m0109332.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id xB8Nw01F031006 for ; Sun, 8 Dec 2019 16:01:22 -0800 Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 2wrc265vcv-3 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Sun, 08 Dec 2019 16:01:22 -0800 Received: from intmgw004.05.ash5.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:82::c) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Sun, 8 Dec 2019 16:01:21 -0800 Received: by devbig007.ftw2.facebook.com (Postfix, from userid 572438) id 9F59B760CCB; Sun, 8 Dec 2019 16:01:20 -0800 (PST) Smtp-Origin-Hostprefix: devbig From: Alexei Starovoitov Smtp-Origin-Hostname: devbig007.ftw2.facebook.com To: CC: , , , , , Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH bpf 3/3] selftests/bpf: test function_graph tracer and bpf trampoline together Date: Sun, 8 Dec 2019 16:01:14 -0800 Message-ID: <20191209000114.1876138-4-ast@kernel.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191209000114.1876138-1-ast@kernel.org> References: <20191209000114.1876138-1-ast@kernel.org> MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95, 18.0.572 definitions=2019-12-08_07:2019-12-05, 2019-12-08 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 lowpriorityscore=0 bulkscore=0 malwarescore=0 mlxlogscore=401 suspectscore=1 mlxscore=0 phishscore=0 clxscore=1015 spamscore=0 adultscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912080207 X-FB-Internal: deliver Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Add simple test script to execute funciton graph tracer while BPF trampoline attaches and detaches from the functions being graph traced. Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/test_ftrace.sh | 39 ++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100755 tools/testing/selftests/bpf/test_ftrace.sh diff --git a/tools/testing/selftests/bpf/test_ftrace.sh b/tools/testing/selftests/bpf/test_ftrace.sh new file mode 100755 index 000000000000..20de7bb873bc --- /dev/null +++ b/tools/testing/selftests/bpf/test_ftrace.sh @@ -0,0 +1,39 @@ +#!/bin/bash + +TR=/sys/kernel/debug/tracing/ +clear_trace() { # reset trace output + echo > $TR/trace +} + +disable_tracing() { # stop trace recording + echo 0 > $TR/tracing_on +} + +enable_tracing() { # start trace recording + echo 1 > $TR/tracing_on +} + +reset_tracer() { # reset the current tracer + echo nop > $TR/current_tracer +} + +disable_tracing +clear_trace + +echo "" > $TR/set_ftrace_filter +echo '*printk* *console* *wake* *serial* *lock*' > $TR/set_ftrace_notrace + +echo "bpf_prog_test*" > $TR/set_graph_function +echo "" > $TR/set_graph_notrace + +echo function_graph > $TR/current_tracer + +enable_tracing +./test_progs -t fentry +./test_progs -t fexit +disable_tracing +clear_trace + +reset_tracer + +exit 0