From patchwork Mon Jul 24 16:28:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rae Moar X-Patchwork-Id: 13324980 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 73A27C001DF for ; Mon, 24 Jul 2023 16:30:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229892AbjGXQab (ORCPT ); Mon, 24 Jul 2023 12:30:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57132 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230455AbjGXQaa (ORCPT ); Mon, 24 Jul 2023 12:30:30 -0400 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AA1B71732 for ; Mon, 24 Jul 2023 09:30:24 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-58378ae25bfso57024487b3.0 for ; Mon, 24 Jul 2023 09:30:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1690216223; x=1690821023; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=wZodKXjzwaMblNUGTJ/e9OGmsCh/NzKmrPm/sVrnOGs=; b=71lpv9k2cfcGlRhTHzZE0I5yOQDBURs4QcLpkoigzk0Tpu5h1Kc2REqVH5dKvlhv26 Y8gsPh/tyN5yV2i8TdZ8RmiuzgsXnkOWB/c8R56bwfPRLZLU49Is7zyIEmbzo1Tw2A9b M7MhENYCF9VPGZWeFcnd1eQLpOpToV/sxK9mYtXTtguX7mAMGbc9aYs6qMH0LWZYuZSY ztlccMBytAFtoq/Kc6gtoZ7UA4L3MMTo15BmgBhNNipKuF8+OTI0FWz6Aiw2gdWQmOkB DutDQfACAhu8RgXQ0+5tZqB4ehMawELJynLgn4LJgq1hA3eNuA4tIXMpE8Rqd7TqfNJS 0ijw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690216223; x=1690821023; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=wZodKXjzwaMblNUGTJ/e9OGmsCh/NzKmrPm/sVrnOGs=; b=mFsOlhck948iuZA698vE81UFP+Vx7GleJPmwm6ibfqxX7/jBsoUkvXDsupRIVtlTZx VDXYqas8mcB3rPb7u9v0P5WbTBs8JWT+UwWfRs0UAG4xLcSdUpwpObIpv9mri0HAs5v8 MXnTIBunftyi3blvw7HtqN7vU0dmsL9gX8CB/vc+cGil++/6AbdDizOZkVIJOu1O4Wba M+amDdTM3DNEkBTiQScFNrca9vIh89p425JsxPVVqHcXO+7dO4+PWlk0ouOSCFZcyfzu rkol4zZfBBoAIu4/icJajIgCabKB7Jn8/7+Bjm61aD1ZSLOW3fCIEfkl6AXU1Yfr3Pks Z2HA== X-Gm-Message-State: ABy/qLZ5tmuo0iXF5mA+JhhqLcc9SW9qKsyPrlFHXoCXKdkUnCyWuUzs 2tViQLYg50CVIuuoWKkiIDmCN4Hmlw== X-Google-Smtp-Source: APBJJlFtkay6ZMGiBUQ0ZKoSGhP5FfT/lTPH9qFCf5jCGSluiHm25kmByyWZt+etk/Vfbrhgjn77KQ8ZMA== X-Received: from rmoar-specialist.c.googlers.com ([fda3:e722:ac3:cc00:2b:7d90:c0a8:45d3]) (user=rmoar job=sendgmr) by 2002:a25:dc43:0:b0:d05:7ba4:67f9 with SMTP id y64-20020a25dc43000000b00d057ba467f9mr46506ybe.3.1690216223803; Mon, 24 Jul 2023 09:30:23 -0700 (PDT) Date: Mon, 24 Jul 2023 16:28:21 +0000 In-Reply-To: <20230724162834.1354164-1-rmoar@google.com> Mime-Version: 1.0 References: <20230724162834.1354164-1-rmoar@google.com> X-Mailer: git-send-email 2.41.0.487.g6d72f3e995-goog Message-ID: <20230724162834.1354164-2-rmoar@google.com> Subject: [PATCH v2 1/9] kunit: Add test attributes API structure From: Rae Moar To: shuah@kernel.org, davidgow@google.com, dlatypov@google.com, brendan.higgins@linux.dev Cc: linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org, keescook@chromium.org, linux-hardening@vger.kernel.org, jstultz@google.com, tglx@linutronix.de, sboyd@kernel.org, Rae Moar Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org Add the basic structure of the test attribute API to KUnit, which can be used to save and access test associated data. Add attributes.c and attributes.h to hold associated structs and functions for the API. Create a struct that holds a variety of associated helper functions for each test attribute. These helper functions will be used to get the attribute value, convert the value to a string, and filter based on the value. This struct is flexible by design to allow for attributes of numerous types and contexts. Add a method to print test attributes in the format of "# [.]: ". Example for a suite: "# speed: slow" Example for a test case: "# test_case.speed: very_slow" Use this method to report attributes in the KTAP output (KTAP spec: https://docs.kernel.org/dev-tools/ktap.html) and _list_tests output when kernel's new kunit.action=list_attr option is used. Note this is derivative of the kunit.action=list option. In test.h, add fields and associated helper functions to test cases and suites to hold user-inputted test attributes. Signed-off-by: Rae Moar Reviewed-by: David Gow --- Changes since v1: - No major changes Changes since RFC v2: - No major changes Changes since RFC v1: - Add list_attr option to only include attribute in the _list_tests output when this module param is set - Add printing options for attributes to print always, print only for suites, or print never. include/kunit/attributes.h | 19 +++++++++ include/kunit/test.h | 33 ++++++++++++++++ lib/kunit/Makefile | 3 +- lib/kunit/attributes.c | 80 ++++++++++++++++++++++++++++++++++++++ lib/kunit/executor.c | 21 ++++++++-- lib/kunit/test.c | 17 ++++---- 6 files changed, 161 insertions(+), 12 deletions(-) create mode 100644 include/kunit/attributes.h create mode 100644 lib/kunit/attributes.c diff --git a/include/kunit/attributes.h b/include/kunit/attributes.h new file mode 100644 index 000000000000..9fcd184cce36 --- /dev/null +++ b/include/kunit/attributes.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * KUnit API to save and access test attributes + * + * Copyright (C) 2023, Google LLC. + * Author: Rae Moar + */ + +#ifndef _KUNIT_ATTRIBUTES_H +#define _KUNIT_ATTRIBUTES_H + +/* + * Print all test attributes for a test case or suite. + * Output format for test cases: "# .: " + * Output format for test suites: "# : " + */ +void kunit_print_attr(void *test_or_suite, bool is_test, unsigned int test_level); + +#endif /* _KUNIT_ATTRIBUTES_H */ diff --git a/include/kunit/test.h b/include/kunit/test.h index 23120d50499e..1fc9155988e9 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -63,12 +63,16 @@ enum kunit_status { KUNIT_SKIPPED, }; +/* Holds attributes for each test case and suite */ +struct kunit_attributes {}; + /** * struct kunit_case - represents an individual test case. * * @run_case: the function representing the actual test case. * @name: the name of the test case. * @generate_params: the generator function for parameterized tests. + * @attr: the attributes associated with the test * * A test case is a function with the signature, * ``void (*)(struct kunit *)`` @@ -104,6 +108,7 @@ struct kunit_case { void (*run_case)(struct kunit *test); const char *name; const void* (*generate_params)(const void *prev, char *desc); + struct kunit_attributes attr; /* private: internal use only. */ enum kunit_status status; @@ -133,6 +138,18 @@ static inline char *kunit_status_to_ok_not_ok(enum kunit_status status) */ #define KUNIT_CASE(test_name) { .run_case = test_name, .name = #test_name } +/** + * KUNIT_CASE_ATTR - A helper for creating a &struct kunit_case + * with attributes + * + * @test_name: a reference to a test case function. + * @attributes: a reference to a struct kunit_attributes object containing + * test attributes + */ +#define KUNIT_CASE_ATTR(test_name, attributes) \ + { .run_case = test_name, .name = #test_name, \ + .attr = attributes } + /** * KUNIT_CASE_PARAM - A helper for creation a parameterized &struct kunit_case * @@ -154,6 +171,20 @@ static inline char *kunit_status_to_ok_not_ok(enum kunit_status status) { .run_case = test_name, .name = #test_name, \ .generate_params = gen_params } +/** + * KUNIT_CASE_PARAM_ATTR - A helper for creating a parameterized &struct + * kunit_case with attributes + * + * @test_name: a reference to a test case function. + * @gen_params: a reference to a parameter generator function. + * @attributes: a reference to a struct kunit_attributes object containing + * test attributes + */ +#define KUNIT_CASE_PARAM_ATTR(test_name, gen_params, attributes) \ + { .run_case = test_name, .name = #test_name, \ + .generate_params = gen_params, \ + .attr = attributes } + /** * struct kunit_suite - describes a related collection of &struct kunit_case * @@ -163,6 +194,7 @@ static inline char *kunit_status_to_ok_not_ok(enum kunit_status status) * @init: called before every test case. * @exit: called after every test case. * @test_cases: a null terminated array of test cases. + * @attr: the attributes associated with the test suite * * A kunit_suite is a collection of related &struct kunit_case s, such that * @init is called before every test case and @exit is called after every @@ -182,6 +214,7 @@ struct kunit_suite { int (*init)(struct kunit *test); void (*exit)(struct kunit *test); struct kunit_case *test_cases; + struct kunit_attributes attr; /* private: internal use only */ char status_comment[KUNIT_STATUS_COMMENT_SIZE]; diff --git a/lib/kunit/Makefile b/lib/kunit/Makefile index cb417f504996..46f75f23dfe4 100644 --- a/lib/kunit/Makefile +++ b/lib/kunit/Makefile @@ -6,7 +6,8 @@ kunit-objs += test.o \ string-stream.o \ assert.o \ try-catch.o \ - executor.o + executor.o \ + attributes.o ifeq ($(CONFIG_KUNIT_DEBUGFS),y) kunit-objs += debugfs.o diff --git a/lib/kunit/attributes.c b/lib/kunit/attributes.c new file mode 100644 index 000000000000..9bda5a5f4030 --- /dev/null +++ b/lib/kunit/attributes.c @@ -0,0 +1,80 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * KUnit API to save and access test attributes + * + * Copyright (C) 2023, Google LLC. + * Author: Rae Moar + */ + +#include +#include + +/* Options for printing attributes: + * PRINT_ALWAYS - attribute is printed for every test case and suite if set + * PRINT_SUITE - attribute is printed for every suite if set but not for test cases + * PRINT_NEVER - attribute is never printed + */ +enum print_ops { + PRINT_ALWAYS, + PRINT_SUITE, + PRINT_NEVER, +}; + +/** + * struct kunit_attr - represents a test attribute and holds flexible + * helper functions to interact with attribute. + * + * @name: name of test attribute, eg. speed + * @get_attr: function to return attribute value given a test + * @to_string: function to return string representation of given + * attribute value + * @filter: function to indicate whether a given attribute value passes a + * filter + */ +struct kunit_attr { + const char *name; + void *(*get_attr)(void *test_or_suite, bool is_test); + const char *(*to_string)(void *attr, bool *to_free); + int (*filter)(void *attr, const char *input, int *err); + void *attr_default; + enum print_ops print; +}; + +/* List of all Test Attributes */ + +static struct kunit_attr kunit_attr_list[] = {}; + +/* Helper Functions to Access Attributes */ + +void kunit_print_attr(void *test_or_suite, bool is_test, unsigned int test_level) +{ + int i; + bool to_free; + void *attr; + const char *attr_name, *attr_str; + struct kunit_suite *suite = is_test ? NULL : test_or_suite; + struct kunit_case *test = is_test ? test_or_suite : NULL; + + for (i = 0; i < ARRAY_SIZE(kunit_attr_list); i++) { + if (kunit_attr_list[i].print == PRINT_NEVER || + (test && kunit_attr_list[i].print == PRINT_SUITE)) + continue; + attr = kunit_attr_list[i].get_attr(test_or_suite, is_test); + if (attr) { + attr_name = kunit_attr_list[i].name; + attr_str = kunit_attr_list[i].to_string(attr, &to_free); + if (test) { + kunit_log(KERN_INFO, test, "%*s# %s.%s: %s", + KUNIT_INDENT_LEN * test_level, "", test->name, + attr_name, attr_str); + } else { + kunit_log(KERN_INFO, suite, "%*s# %s: %s", + KUNIT_INDENT_LEN * test_level, "", attr_name, attr_str); + } + + /* Free to_string of attribute if needed */ + if (to_free) + kfree(attr_str); + } + } +} diff --git a/lib/kunit/executor.c b/lib/kunit/executor.c index 74982b83707c..12e38a48a5cc 100644 --- a/lib/kunit/executor.c +++ b/lib/kunit/executor.c @@ -2,6 +2,7 @@ #include #include +#include #include #include @@ -24,7 +25,8 @@ module_param_named(action, action_param, charp, 0); MODULE_PARM_DESC(action, "Changes KUnit executor behavior, valid values are:\n" ": run the tests like normal\n" - "'list' to list test names instead of running them.\n"); + "'list' to list test names instead of running them.\n" + "'list_attr' to list test names and attributes instead of running them.\n"); /* glob_match() needs NULL terminated strings, so we need a copy of filter_glob_param. */ struct kunit_test_filter { @@ -172,7 +174,7 @@ static void kunit_exec_run_tests(struct suite_set *suite_set) __kunit_test_suites_init(suite_set->start, num_suites); } -static void kunit_exec_list_tests(struct suite_set *suite_set) +static void kunit_exec_list_tests(struct suite_set *suite_set, bool include_attr) { struct kunit_suite * const *suites; struct kunit_case *test_case; @@ -180,10 +182,19 @@ static void kunit_exec_list_tests(struct suite_set *suite_set) /* Hack: print a ktap header so kunit.py can find the start of KUnit output. */ pr_info("KTAP version 1\n"); - for (suites = suite_set->start; suites < suite_set->end; suites++) + for (suites = suite_set->start; suites < suite_set->end; suites++) { + /* Print suite name and suite attributes */ + pr_info("%s\n", (*suites)->name); + if (include_attr) + kunit_print_attr((void *)(*suites), false, 0); + + /* Print test case name and attributes in suite */ kunit_suite_for_each_test_case((*suites), test_case) { pr_info("%s.%s\n", (*suites)->name, test_case->name); + if (include_attr) + kunit_print_attr((void *)test_case, true, 0); } + } } int kunit_run_all_tests(void) @@ -206,7 +217,9 @@ int kunit_run_all_tests(void) if (!action_param) kunit_exec_run_tests(&suite_set); else if (strcmp(action_param, "list") == 0) - kunit_exec_list_tests(&suite_set); + kunit_exec_list_tests(&suite_set, false); + else if (strcmp(action_param, "list_attr") == 0) + kunit_exec_list_tests(&suite_set, true); else pr_err("kunit executor: unknown action '%s'\n", action_param); diff --git a/lib/kunit/test.c b/lib/kunit/test.c index 84e4666555c9..9ee55139ecd1 100644 --- a/lib/kunit/test.c +++ b/lib/kunit/test.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include @@ -168,6 +169,13 @@ size_t kunit_suite_num_test_cases(struct kunit_suite *suite) } EXPORT_SYMBOL_GPL(kunit_suite_num_test_cases); +/* Currently supported test levels */ +enum { + KUNIT_LEVEL_SUITE = 0, + KUNIT_LEVEL_CASE, + KUNIT_LEVEL_CASE_PARAM, +}; + static void kunit_print_suite_start(struct kunit_suite *suite) { /* @@ -181,17 +189,11 @@ static void kunit_print_suite_start(struct kunit_suite *suite) pr_info(KUNIT_SUBTEST_INDENT "KTAP version 1\n"); pr_info(KUNIT_SUBTEST_INDENT "# Subtest: %s\n", suite->name); + kunit_print_attr((void *)suite, false, KUNIT_LEVEL_CASE); pr_info(KUNIT_SUBTEST_INDENT "1..%zd\n", kunit_suite_num_test_cases(suite)); } -/* Currently supported test levels */ -enum { - KUNIT_LEVEL_SUITE = 0, - KUNIT_LEVEL_CASE, - KUNIT_LEVEL_CASE_PARAM, -}; - static void kunit_print_ok_not_ok(struct kunit *test, unsigned int test_level, enum kunit_status status, @@ -651,6 +653,7 @@ int kunit_run_tests(struct kunit_suite *suite) } } + kunit_print_attr((void *)test_case, true, KUNIT_LEVEL_CASE); kunit_print_test_stats(&test, param_stats);