From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx48x1wMKhKEcfS4FggbdwHz5GdbU/xAv6av1j/EsAjSlcKmBAj4oi5Onn5TKI2Gaa+OkXNNH ARC-Seal: i=1; a=rsa-sha256; t=1524659043; cv=none; d=google.com; s=arc-20160816; b=hfNMT4dAE9tEDA4EHKujTzFRvkYVJo0u4hl5HjChaBulFSanyiFcailMH5VZHvZHqt rPIGiVSUkTf85gFjXQLJY6oVCZ1RI4nobmJx/oNkx3KDDUocos/twL3e3ih2FMcnAfXK Ggkm8+xEbYQXVr45/JH+gaKMrGQQsL0i7JCej4sfdjtR/FRBRmuMYI5lidMBg+VclNuF zzAPhsFQuMqhJCenoPDimtKdZGR0UHBghf9ktyBfVNq7BL4sXFdgMOT8CI93TPPRQWZX QINPOlOy0YQiVJG3n58bC453Cfn1rkjAAXrbDJsTJezUVvS+Jm3WsbRQFDL6nduRkVTz fGeQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :user-agent:references:in-reply-to:message-id:date:subject:cc:to :from:dmarc-filter:arc-authentication-results; bh=7aB1kwejNV17jGwVjM0014os7ABz8p7j7Dt0VYnQJ10=; b=Tub4i2saBiw7JTH99uQqtnKnWnKWNKuXhdcI3tyxHuOWX2o9X4BcOqWv65LSgAUdBK l+SFfobaGfCnJ1+y94Al6ZUKDu06nxAShxoA77J4ya4voDQtDpntRsxshr/FOrPeC5wS rFxtnugScf397sy9AkyLSqJ8JB+IffCjoSVLkAU/oRXd6p9oLXeHPh5rWxtxKDXJx1hK D7Qei5c6AhbTOR1m3QaSjyK8S9hLSzoON92JBmR+/5QjO0kEsYw0zmvesHXnT41Nm6YG 5C1PM47oe4hS6f0zQiKte9WWKAUdHYX8ZzLLSgYaKlm6cBqRUfgGUa7UbX1Ib3GeMaxR hIRA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kselftest-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kselftest-owner@vger.kernel.org Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kselftest-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kselftest-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753142AbeDYMXs (ORCPT ); Wed, 25 Apr 2018 08:23:48 -0400 Received: from mail.kernel.org ([198.145.29.99]:39250 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751870AbeDYMXq (ORCPT ); Wed, 25 Apr 2018 08:23:46 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7312121748 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=mhiramat@kernel.org From: Masami Hiramatsu To: Steven Rostedt , linux-kernel@vger.kernel.org Cc: mhiramat@kernel.org, Ingo Molnar , Namhyung Kim , Tom Zanussi , Arnaldo Carvalho de Melo , linux-trace-users@vger.kernel.org, linux-kselftest@vger.kernel.org, shuah@kernel.org, Ravi Bangoria Subject: [PATCH v7 15/16] selftests: ftrace: Add a testcase for array type with kprobe_event Date: Wed, 25 Apr 2018 21:23:22 +0900 Message-Id: <152465900245.26224.15182085325355859897.stgit@devbox> X-Mailer: git-send-email 2.13.6 In-Reply-To: <152465856498.26224.16969986455942749517.stgit@devbox> References: <152465856498.26224.16969986455942749517.stgit@devbox> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kselftest-owner@vger.kernel.org X-Mailing-List: linux-kselftest@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1598720881055873854?= X-GMAIL-MSGID: =?utf-8?q?1598720881055873854?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Add a testcase for array type with kprobe event. This tests good/bad syntax combinations and also the traced data is correct in several way. If the kernel doesn't support array type, it skips the test as UNSUPPORTED. Signed-off-by: Masami Hiramatsu --- Changes in v7: - Fix README test. --- .../ftrace/test.d/kprobe/kprobe_args_array.tc | 92 ++++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_array.tc diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_array.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_array.tc new file mode 100644 index 000000000000..7a3819fc1c31 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_array.tc @@ -0,0 +1,92 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Kprobe event array argument + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +grep -q '\\\[\\\]' README || exit_unsupported # version issue + +GOODSYM="_sdata" +if ! grep -qw ${GOODSYM} /proc/kallsyms ; then + GOODSYM="create_trace_kprobe" +fi +case `uname -m` in +x86_64) + ARG2=%si + OFFS=8 + BITS=64 +;; +i[3456]86) + ARG2=%cx + OFFS=4 + BITS=32 +;; +aarch64) + ARG2=%x1 + OFFS=8 + BITS=64 +;; +arm*) + ARG2=%r1 + OFFS=4 + BITS=32 +;; +*) + echo "Please implement other architecture here" + exit_untested +esac + +create_testprobe() { # args + echo "p:testprobe create_trace_kprobe $*" > kprobe_events +} + +check_field() { # grep-pattern + grep -e "$*" events/kprobes/testprobe/format +} + +echo 0 > events/enable +echo > kprobe_events + +: "Syntax test" +create_testprobe "+0(${ARG2}):x8[1] +0(${ARG2}):s16[1] +0(${ARG2}):u32[1]" +check_field "field:u8 arg1\[1\];.*size:1;" +check_field "field:s16 arg2\[1\];.*size:2;" +check_field "field:u32 arg3\[1\];.*size:4;" +create_testprobe "+0(${ARG2}):x64[1] +0(${ARG2}):symbol[1]" +check_field "field:u64 arg1\[1\];.*size:8;" +check_field "field:u${BITS} arg2\[1\];.*size:${OFFS};" +create_testprobe "+0(${ARG2}):b2@3/8[1] +0(${ARG2}):string[1]" +check_field "field:u8 arg1\[1\];.*size:1;" +check_field "field:__data_loc char\[\]\[1\] arg2;.*size:4;" +create_testprobe "+0(${ARG2}):x8[64] @${GOODSYM}:x8[4]" +check_field "field:u8 arg1\[64\];.*size:64;" +check_field "field:u8 arg2\[4\];.*size:4;" + +! create_testprobe "${ARG2}:x8[1]" # Can not use array type on register +! create_testprobe "\$comm:x8[1]" # Can not use array type on \$comm +! create_testprobe "\$comm:string[1]" # No, even if it is string array +! create_testprobe "+0(${ARG2}):x64[0]" # array size >= 1 +! create_testprobe "+0(${ARG2}):x64[65]" # array size <= 64 + +: "Test get argument (1)" +create_testprobe "arg1=+0(${ARG2}):string[1]" > kprobe_events +echo 1 > events/kprobes/testprobe/enable +! echo test >> kprobe_events +tail -n 1 trace | grep -qe "testprobe.* arg1={\"test\"}" +echo 0 > events/kprobes/testprobe/enable + +: "Test get argument (2)" +create_testprobe "arg1=+0(${ARG2}):string[3]" > kprobe_events +echo 1 > events/kprobes/testprobe/enable +! echo foo bar buzz >> kprobe_events +tail -n 1 trace | grep -qe "testprobe.* arg1={\"foo\",\"bar\",\"buzz\"}" +echo 0 > events/kprobes/testprobe/enable + +: "Test get argument (3)" +create_testprobe "arg1=+0(+0(${ARG2})):u8[4]" > kprobe_events +echo 1 > events/kprobes/testprobe/enable +! echo 1234 >> kprobe_events +tail -n 1 trace | grep -qe "testprobe.* arg1={49,50,51,52}" # ascii code +echo 0 > events/kprobes/testprobe/enable + +echo > kprobe_events