Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E344FC433EF for ; Thu, 16 Dec 2021 17:35:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240355AbhLPRf3 (ORCPT ); Thu, 16 Dec 2021 12:35:29 -0500 Received: from linux.microsoft.com ([13.77.154.182]:54474 "EHLO linux.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240288AbhLPRfQ (ORCPT ); Thu, 16 Dec 2021 12:35:16 -0500 Received: from localhost.localdomain (c-73-140-2-214.hsd1.wa.comcast.net [73.140.2.214]) by linux.microsoft.com (Postfix) with ESMTPSA id 1FC3E20B7189; Thu, 16 Dec 2021 09:35:16 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 1FC3E20B7189 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1639676116; bh=Nsy28iBGd9K5KoEvpu/5fcI1CXQFpgeu6V0nNpVTY/s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PHpLP1oJj1OaVVkTWFLMMwz9dYb5+cvom6VnKtqpZ40YeijTjL6mS8BU2ATZNBuLc nlkrlwG/mcBDldz1cKCMyFa31q2Qzai1udSv2ZClISe80xVzez2atr0gsJD+M2tBbG l8bVuxEhlH5/vHdCNj//prshpyCjzMnedk1z7328= From: Beau Belgrave To: rostedt@goodmis.org, mhiramat@kernel.org Cc: linux-trace-devel@vger.kernel.org, linux-kernel@vger.kernel.org, beaub@linux.microsoft.com Subject: [PATCH v8 06/12] user_events: Add self-test for dynamic_events integration Date: Thu, 16 Dec 2021 09:35:05 -0800 Message-Id: <20211216173511.10390-7-beaub@linux.microsoft.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211216173511.10390-1-beaub@linux.microsoft.com> References: <20211216173511.10390-1-beaub@linux.microsoft.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Tests matching deletes, creation of basic and complex types. Ensures common patterns work correctly when interacting with dynamic_events file. Signed-off-by: Beau Belgrave --- tools/testing/selftests/user_events/Makefile | 2 +- .../testing/selftests/user_events/dyn_test.c | 130 ++++++++++++++++++ 2 files changed, 131 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/user_events/dyn_test.c diff --git a/tools/testing/selftests/user_events/Makefile b/tools/testing/selftests/user_events/Makefile index d66c551a6fe3..e824b9c2cae7 100644 --- a/tools/testing/selftests/user_events/Makefile +++ b/tools/testing/selftests/user_events/Makefile @@ -2,7 +2,7 @@ CFLAGS += -Wl,-no-as-needed -Wall -I../../../../usr/include LDLIBS += -lrt -lpthread -lm -TEST_GEN_PROGS = ftrace_test +TEST_GEN_PROGS = ftrace_test dyn_test TEST_FILES := settings diff --git a/tools/testing/selftests/user_events/dyn_test.c b/tools/testing/selftests/user_events/dyn_test.c new file mode 100644 index 000000000000..d6265d14cd51 --- /dev/null +++ b/tools/testing/selftests/user_events/dyn_test.c @@ -0,0 +1,130 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * User Events Dyn Events Test Program + * + * Copyright (c) 2021 Beau Belgrave + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../kselftest_harness.h" + +const char *dyn_file = "/sys/kernel/debug/tracing/dynamic_events"; +const char *clear = "!u:__test_event"; + +static int Append(const char *value) +{ + int fd = open(dyn_file, O_RDWR | O_APPEND); + int ret = write(fd, value, strlen(value)); + + close(fd); + return ret; +} + +#define CLEAR() \ +do { \ + int ret = Append(clear); \ + if (ret == -1) \ + ASSERT_EQ(ENOENT, errno); \ +} while (0) + +#define TEST_PARSE(x) \ +do { \ + ASSERT_NE(-1, Append(x)); \ + CLEAR(); \ +} while (0) + +#define TEST_NPARSE(x) ASSERT_EQ(-1, Append(x)) + +FIXTURE(user) { +}; + +FIXTURE_SETUP(user) { + CLEAR(); +} + +FIXTURE_TEARDOWN(user) { + CLEAR(); +} + +TEST_F(user, basic_types) { + /* All should work */ + TEST_PARSE("u:__test_event u64 a"); + TEST_PARSE("u:__test_event u32 a"); + TEST_PARSE("u:__test_event u16 a"); + TEST_PARSE("u:__test_event u8 a"); + TEST_PARSE("u:__test_event char a"); + TEST_PARSE("u:__test_event unsigned char a"); + TEST_PARSE("u:__test_event int a"); + TEST_PARSE("u:__test_event unsigned int a"); + TEST_PARSE("u:__test_event short a"); + TEST_PARSE("u:__test_event unsigned short a"); + TEST_PARSE("u:__test_event char[20] a"); + TEST_PARSE("u:__test_event unsigned char[20] a"); + TEST_PARSE("u:__test_event char[0x14] a"); + TEST_PARSE("u:__test_event unsigned char[0x14] a"); + /* Bad size format should fail */ + TEST_NPARSE("u:__test_event char[aa] a"); + /* Large size should fail */ + TEST_NPARSE("u:__test_event char[9999] a"); + /* Long size string should fail */ + TEST_NPARSE("u:__test_event char[0x0000000000001] a"); +} + +TEST_F(user, loc_types) { + /* All should work */ + TEST_PARSE("u:__test_event __data_loc char[] a"); + TEST_PARSE("u:__test_event __data_loc unsigned char[] a"); + TEST_PARSE("u:__test_event __rel_loc char[] a"); + TEST_PARSE("u:__test_event __rel_loc unsigned char[] a"); +} + +TEST_F(user, size_types) { + /* Should work */ + TEST_PARSE("u:__test_event struct custom a 20"); + /* Size not specified on struct should fail */ + TEST_NPARSE("u:__test_event struct custom a"); + /* Size specified on non-struct should fail */ + TEST_NPARSE("u:__test_event char a 20"); +} + +TEST_F(user, flags) { + /* Should work */ + TEST_PARSE("u:__test_event:BPF_ITER u32 a"); + /* Forward compat */ + TEST_PARSE("u:__test_event:BPF_ITER,FLAG_FUTURE u32 a"); +} + +TEST_F(user, matching) { + /* Register */ + ASSERT_NE(-1, Append("u:__test_event struct custom a 20")); + /* Should not match */ + TEST_NPARSE("!u:__test_event struct custom b"); + /* Should match */ + TEST_PARSE("!u:__test_event struct custom a"); + /* Multi field reg */ + ASSERT_NE(-1, Append("u:__test_event u32 a; u32 b")); + /* Non matching cases */ + TEST_NPARSE("!u:__test_event u32 a"); + TEST_NPARSE("!u:__test_event u32 b"); + TEST_NPARSE("!u:__test_event u32 a; u32 "); + TEST_NPARSE("!u:__test_event u32 a; u32 a"); + /* Matching case */ + TEST_PARSE("!u:__test_event u32 a; u32 b"); + /* Register */ + ASSERT_NE(-1, Append("u:__test_event u32 a; u32 b")); + /* Ensure trailing semi-colon case */ + TEST_PARSE("!u:__test_event u32 a; u32 b;"); +} + +int main(int argc, char **argv) +{ + return test_harness_run(argc, argv); +} -- 2.17.1