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Message-ID: <CABVgOS=NCNnmDFAYC9P-bDv9N1eVu59rX85p5oruAB=v5Chkgg@mail.gmail.com>
Date: Tue, 25 Jul 2023 16:42:16 +0800
From: David Gow <davidgow@...gle.com>
To: Rae Moar <rmoar@...gle.com>
Cc: shuah@...nel.org, dlatypov@...gle.com, brendan.higgins@...ux.dev,
linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com,
linux-kernel@...r.kernel.org, keescook@...omium.org,
linux-hardening@...r.kernel.org, jstultz@...gle.com,
tglx@...utronix.de, sboyd@...nel.org
Subject: Re: [PATCH v2 4/9] kunit: Add ability to filter attributes
On Tue, 25 Jul 2023 at 00:30, Rae Moar <rmoar@...gle.com> wrote:
>
> Add filtering of test attributes. Users can filter tests using the
> module_param called "filter".
>
> Filters are imputed in the format: <attribute_name><operation><value>
>
> Example: kunit.filter="speed>slow"
>
> Operations include: >, <, >=, <=, !=, and =. These operations will act the
> same for attributes of the same type but may not between types.
>
> Note multiple filters can be inputted by separating them with a comma.
> Example: kunit.filter="speed=slow, module!=example"
>
> Since both suites and test cases can have attributes, there may be
> conflicts. The process of filtering follows these rules:
> - Filtering always operates at a per-test level.
> - If a test has an attribute set, then the test's value is filtered on.
> - Otherwise, the value falls back to the suite's value.
> - If neither are set, the attribute has a global "default" value, which
> is used.
>
> Filtered tests will not be run or show in output. The tests can instead be
> skipped using the configurable option "kunit.filter_action=skip".
>
> Note the default settings for running tests remains unfiltered.
>
> Finally, add "filter" methods for the speed and module attributes to parse
> and compare attribute values.
>
> Note this filtering functionality will be added to kunit.py in the next
> patch.
>
> Signed-off-by: Rae Moar <rmoar@...gle.com>
> ---
Looks good. One super-minor formatting nitpick below.
Reviewed-by: David Gow <davidgow@...gle.com>
Cheers,
-- David
>
> Changes since v1:
> - Fix compile warning of use of uninitialized variable
>
> Changes since RFC v2:
> - Change to output only one error before exiting.
>
> Changes since RFC v1:
> - Change method for inputting filters to allow for spaces in filtering
> values
> - Add option to skip filtered tests instead of not run or show them with
> the filter_action=skip flag
>
> include/kunit/attributes.h | 31 +++++
> lib/kunit/attributes.c | 271 +++++++++++++++++++++++++++++++++++++
> lib/kunit/executor.c | 94 ++++++++++---
> lib/kunit/executor_test.c | 12 +-
> lib/kunit/test.c | 10 +-
> 5 files changed, 390 insertions(+), 28 deletions(-)
>
> diff --git a/include/kunit/attributes.h b/include/kunit/attributes.h
> index 9fcd184cce36..bc76a0b786d2 100644
> --- a/include/kunit/attributes.h
> +++ b/include/kunit/attributes.h
> @@ -9,6 +9,20 @@
> #ifndef _KUNIT_ATTRIBUTES_H
> #define _KUNIT_ATTRIBUTES_H
>
> +/*
> + * struct kunit_attr_filter - representation of attributes filter with the
> + * attribute object and string input
> + */
> +struct kunit_attr_filter {
> + struct kunit_attr *attr;
> + char *input;
> +};
> +
> +/*
> + * Returns the name of the filter's attribute.
> + */
> +const char *kunit_attr_filter_name(struct kunit_attr_filter filter);
> +
> /*
> * Print all test attributes for a test case or suite.
> * Output format for test cases: "# <test_name>.<attribute>: <value>"
> @@ -16,4 +30,21 @@
> */
> void kunit_print_attr(void *test_or_suite, bool is_test, unsigned int test_level);
>
> +/*
> + * Returns the number of fitlers in input.
> + */
> +int kunit_get_filter_count(char *input);
> +
> +/*
> + * Parse attributes filter input and return an objects containing the
> + * attribute object and the string input of the next filter.
> + */
> +struct kunit_attr_filter kunit_next_attr_filter(char **filters, int *err);
> +
> +/*
> + * Returns a copy of the suite containing only tests that pass the filter.
> + */
> +struct kunit_suite *kunit_filter_attr_tests(const struct kunit_suite *const suite,
> + struct kunit_attr_filter filter, char *action, int *err);
> +
> #endif /* _KUNIT_ATTRIBUTES_H */
> diff --git a/lib/kunit/attributes.c b/lib/kunit/attributes.c
> index 9dce4f4d726c..d37c40c0ce4f 100644
> --- a/lib/kunit/attributes.c
> +++ b/lib/kunit/attributes.c
> @@ -67,6 +67,104 @@ static const char *attr_string_to_string(void *attr, bool *to_free)
> return (char *) attr;
> }
>
> +/* Filter Methods */
> +
> +static const char op_list[] = "<>!=";
> +
> +/*
> + * Returns whether the inputted integer value matches the filter given
> + * by the operation string and inputted integer.
> + */
> +static int int_filter(long val, const char *op, int input, int *err)
> +{
> + if (!strncmp(op, "<=", 2))
> + return (val <= input);
> + else if (!strncmp(op, ">=", 2))
> + return (val >= input);
> + else if (!strncmp(op, "!=", 2))
> + return (val != input);
> + else if (!strncmp(op, ">", 1))
> + return (val > input);
> + else if (!strncmp(op, "<", 1))
> + return (val < input);
> + else if (!strncmp(op, "=", 1))
> + return (val == input);
> + *err = -EINVAL;
> + pr_err("kunit executor: invalid filter operation: %s\n", op);
> + return false;
> +}
> +
> +/*
> + * Returns whether the inputted enum value "attr" matches the filter given
> + * by the input string. Note: the str_list includes the corresponding string
> + * list to the enum values.
> + */
> +static int attr_enum_filter(void *attr, const char *input, int *err,
> + const char * const str_list[], int max)
> +{
> + int i, j, input_int;
> + long test_val = (long)attr;
> + const char *input_val = NULL;
> +
> + for (i = 0; input[i]; i++) {
> + if (!strchr(op_list, input[i])) {
> + input_val = input + i;
> + break;
> + }
> + }
> +
> + if (!input_val) {
> + *err = -EINVAL;
> + pr_err("kunit executor: filter value not found: %s\n", input);
> + return false;
> + }
> +
> + for (j = 0; j <= max; j++) {
> + if (!strcmp(input_val, str_list[j]))
> + input_int = j;
> + }
> +
> + if (!input_int) {
> + *err = -EINVAL;
> + pr_err("kunit executor: invalid filter input: %s\n", input);
> + return false;
> + }
> +
> + return int_filter(test_val, input, input_int, err);
> +}
> +
> +static int attr_speed_filter(void *attr, const char *input, int *err)
> +{
> + return attr_enum_filter(attr, input, err, speed_str_list, KUNIT_SPEED_MAX);
> +}
> +
> +/*
> + * Returns whether the inputted string value (attr) matches the filter given
> + * by the input string.
> + */
> +static int attr_string_filter(void *attr, const char *input, int *err)
> +{
> + char *str = attr;
> +
> + if (!strncmp(input, "<", 1)) {
> + *err = -EINVAL;
> + pr_err("kunit executor: invalid filter input: %s\n", input);
> + return false;
> + } else if (!strncmp(input, ">", 1)) {
> + *err = -EINVAL;
> + pr_err("kunit executor: invalid filter input: %s\n", input);
> + return false;
> + } else if (!strncmp(input, "!=", 2)) {
> + return (strcmp(input + 2, str) != 0);
> + } else if (!strncmp(input, "=", 1)) {
> + return (strcmp(input + 1, str) == 0);
> + }
> + *err = -EINVAL;
> + pr_err("kunit executor: invalid filter operation: %s\n", input);
> + return false;
> +}
> +
> +
> /* Get Attribute Methods */
>
> static void *attr_speed_get(void *test_or_suite, bool is_test)
> @@ -99,6 +197,7 @@ static struct kunit_attr kunit_attr_list[] = {
> .name = "speed",
> .get_attr = attr_speed_get,
> .to_string = attr_speed_to_string,
> + .filter = attr_speed_filter,
> .attr_default = (void *)KUNIT_SPEED_NORMAL,
> .print = PRINT_ALWAYS,
> },
> @@ -106,6 +205,7 @@ static struct kunit_attr kunit_attr_list[] = {
> .name = "module",
> .get_attr = attr_module_get,
> .to_string = attr_string_to_string,
> + .filter = attr_string_filter,
> .attr_default = (void *)"",
> .print = PRINT_SUITE,
> }
> @@ -113,6 +213,11 @@ static struct kunit_attr kunit_attr_list[] = {
>
> /* Helper Functions to Access Attributes */
>
> +const char *kunit_attr_filter_name(struct kunit_attr_filter filter)
> +{
> + return filter.attr->name;
> +}
> +
> void kunit_print_attr(void *test_or_suite, bool is_test, unsigned int test_level)
> {
> int i;
> @@ -145,3 +250,169 @@ void kunit_print_attr(void *test_or_suite, bool is_test, unsigned int test_level
> }
> }
> }
> +
> +/* Helper Functions to Filter Attributes */
> +
> +int kunit_get_filter_count(char *input)
> +{
> + int i, comma_index, count = 0;
> +
> + for (i = 0; input[i]; i++) {
> + if (input[i] == ',') {
> + if ((i - comma_index) > 1)
> + count++;
> + comma_index = i;
> + }
> + }
> + if ((i - comma_index) > 0)
> + count++;
> + return count;
> +}
> +
> +struct kunit_attr_filter kunit_next_attr_filter(char **filters, int *err)
> +{
> + struct kunit_attr_filter filter = {};
> + int i, j, comma_index, new_start_index;
> + int op_index = -1, attr_index = -1;
> + char op;
> + char *input = *filters;
> +
> + /* Parse input until operation */
> + for (i = 0; input[i]; i++) {
> + if (op_index < 0 && strchr(op_list, input[i])) {
> + op_index = i;
> + } else if (!comma_index && input[i] == ',') {
> + comma_index = i;
> + } else if (comma_index && input[i] != ' ') {
> + new_start_index = i;
> + break;
> + }
> + }
> +
> + if (op_index <= 0) {
> + *err = -EINVAL;
> + pr_err("kunit executor: filter operation not found: %s\n", input);
> + return filter;
> + }
> +
> + /* Temporarily set operator to \0 character. */
> + op = input[op_index];
> + input[op_index] = '\0';
> +
> + /* Find associated kunit_attr object */
> + for (j = 0; j < ARRAY_SIZE(kunit_attr_list); j++) {
> + if (!strcmp(input, kunit_attr_list[j].name)) {
> + attr_index = j;
> + break;
> + }
> + }
> +
> + input[op_index] = op;
> +
> + if (attr_index < 0) {
> + *err = -EINVAL;
> + pr_err("kunit executor: attribute not found: %s\n", input);
> + } else {
> + filter.attr = &kunit_attr_list[attr_index];
> + }
> +
> + if (comma_index) {
> + input[comma_index] = '\0';
> + filter.input = input + op_index;
> + input = input + new_start_index;
> + } else {
> + filter.input = input + op_index;
> + input = NULL;
> + }
> +
> + *filters = input;
> +
> + return filter;
> +}
> +
> +struct kunit_suite *kunit_filter_attr_tests(const struct kunit_suite *const suite,
> + struct kunit_attr_filter filter, char *action, int *err)
> +{
> + int n = 0;
> + struct kunit_case *filtered, *test_case;
> + struct kunit_suite *copy;
> + void *suite_val, *test_val;
> + bool suite_result, test_result, default_result, result;
> +
> + /* Allocate memory for new copy of suite and list of test cases */
> + copy = kmemdup(suite, sizeof(*copy), GFP_KERNEL);
> + if (!copy)
> + return ERR_PTR(-ENOMEM);
> +
> + kunit_suite_for_each_test_case(suite, test_case) { n++; }
> +
> + filtered = kcalloc(n + 1, sizeof(*filtered), GFP_KERNEL);
> + if (!filtered) {
> + kfree(copy);
> + return ERR_PTR(-ENOMEM);
> + }
> +
> + n = 0;
> +
> + /* Save filtering result on default value */
> + default_result = filter.attr->filter(filter.attr->attr_default, filter.input, err);
> + if (*err) {
> + kfree(copy);
> + kfree(filtered);
> + return NULL;
> + }
> +
> + /* Save suite attribute value and filtering result on that value */
> + suite_val = filter.attr->get_attr((void *)suite, false);
> + suite_result = filter.attr->filter(suite_val, filter.input, err);
> + if (*err) {
> + kfree(copy);
> + kfree(filtered);
> + return NULL;
> + }
> +
> + /* For each test case, save test case if passes filtering. */
> + kunit_suite_for_each_test_case(suite, test_case) {
> + test_val = filter.attr->get_attr((void *) test_case, true);
> + test_result = filter.attr->filter(filter.attr->get_attr(test_case, true),
> + filter.input, err);
> + if (*err) {
> + kfree(copy);
> + kfree(filtered);
> + return NULL;
> + }
> +
> + /*
> + * If attribute value of test case is set, filter on that value.
> + * If not, filter on suite value if set. If not, filter on
> + * default value.
> + */
> + result = false;
> + if (test_val) {
> + if (test_result)
> + result = true;
> + } else if (suite_val) {
> + if (suite_result)
> + result = true;
> + } else if (default_result) {
> + result = true;
> + }
> +
> + if (result) {
> + filtered[n++] = *test_case;
> + } else if (action && strcmp(action, "skip") == 0) {
> + test_case->status = KUNIT_SKIPPED;
> + filtered[n++] = *test_case;
> + }
> + }
> +
> + if (n == 0) {
> + kfree(copy);
> + kfree(filtered);
> + return NULL;
> + }
> +
> + copy->test_cases = filtered;
> +
> + return copy;
> +}
> diff --git a/lib/kunit/executor.c b/lib/kunit/executor.c
> index 12e38a48a5cc..c286ae47435a 100644
> --- a/lib/kunit/executor.c
> +++ b/lib/kunit/executor.c
> @@ -17,6 +17,9 @@ extern struct kunit_suite * const __kunit_suites_end[];
>
> static char *filter_glob_param;
> static char *action_param;
> +static char *filter_param;
> +static char *filter_action_param;
> +
Nit: do we need this extra newline here?
>
> module_param_named(filter_glob, filter_glob_param, charp, 0);
> MODULE_PARM_DESC(filter_glob,
> @@ -27,15 +30,23 @@ MODULE_PARM_DESC(action,
> "<none>: run the tests like normal\n"
> "'list' to list test names instead of running them.\n"
> "'list_attr' to list test names and attributes instead of running them.\n");
> +module_param_named(filter, filter_param, charp, 0);
> +MODULE_PARM_DESC(filter,
> + "Filter which KUnit test suites/tests run at boot-time using attributes, e.g. speed>slow");
> +module_param_named(filter_action, filter_action_param, charp, 0);
> +MODULE_PARM_DESC(filter_action,
> + "Changes behavior of filtered tests using attributes, valid values are:\n"
> + "<none>: do not run filtered tests as normal\n"
> + "'skip': skip all filtered tests instead so tests will appear in output\n");
>
> /* glob_match() needs NULL terminated strings, so we need a copy of filter_glob_param. */
> -struct kunit_test_filter {
> +struct kunit_glob_filter {
> char *suite_glob;
> char *test_glob;
> };
>
> /* Split "suite_glob.test_glob" into two. Assumes filter_glob is not empty. */
> -static void kunit_parse_filter_glob(struct kunit_test_filter *parsed,
> +static void kunit_parse_glob_filter(struct kunit_glob_filter *parsed,
> const char *filter_glob)
> {
> const int len = strlen(filter_glob);
> @@ -57,7 +68,7 @@ static void kunit_parse_filter_glob(struct kunit_test_filter *parsed,
>
> /* Create a copy of suite with only tests that match test_glob. */
> static struct kunit_suite *
> -kunit_filter_tests(const struct kunit_suite *const suite, const char *test_glob)
> +kunit_filter_glob_tests(const struct kunit_suite *const suite, const char *test_glob)
> {
> int n = 0;
> struct kunit_case *filtered, *test_case;
> @@ -111,12 +122,15 @@ static void kunit_free_suite_set(struct suite_set suite_set)
>
> static struct suite_set kunit_filter_suites(const struct suite_set *suite_set,
> const char *filter_glob,
> + char *filters,
> + char *filter_action,
> int *err)
> {
> - int i;
> - struct kunit_suite **copy, *filtered_suite;
> + int i, j, k, filter_count;
> + struct kunit_suite **copy, *filtered_suite, *new_filtered_suite;
> struct suite_set filtered;
> - struct kunit_test_filter filter;
> + struct kunit_glob_filter parsed_glob;
> + struct kunit_attr_filter *parsed_filters;
>
> const size_t max = suite_set->end - suite_set->start;
>
> @@ -127,17 +141,52 @@ static struct suite_set kunit_filter_suites(const struct suite_set *suite_set,
> return filtered;
> }
>
> - kunit_parse_filter_glob(&filter, filter_glob);
> -
> - for (i = 0; &suite_set->start[i] != suite_set->end; i++) {
> - if (!glob_match(filter.suite_glob, suite_set->start[i]->name))
> - continue;
> + if (filter_glob)
> + kunit_parse_glob_filter(&parsed_glob, filter_glob);
>
> - filtered_suite = kunit_filter_tests(suite_set->start[i], filter.test_glob);
> - if (IS_ERR(filtered_suite)) {
> - *err = PTR_ERR(filtered_suite);
> + /* Parse attribute filters */
> + if (filters) {
> + filter_count = kunit_get_filter_count(filters);
> + parsed_filters = kcalloc(filter_count + 1, sizeof(*parsed_filters), GFP_KERNEL);
> + for (j = 0; j < filter_count; j++)
> + parsed_filters[j] = kunit_next_attr_filter(&filters, err);
> + if (*err)
> return filtered;
> + }
> +
> + for (i = 0; &suite_set->start[i] != suite_set->end; i++) {
> + filtered_suite = suite_set->start[i];
> + if (filter_glob) {
> + if (!glob_match(parsed_glob.suite_glob, filtered_suite->name))
> + continue;
> + filtered_suite = kunit_filter_glob_tests(filtered_suite,
> + parsed_glob.test_glob);
> + if (IS_ERR(filtered_suite)) {
> + *err = PTR_ERR(filtered_suite);
> + return filtered;
> + }
> + }
> + if (filter_count) {
> + for (k = 0; k < filter_count; k++) {
> + new_filtered_suite = kunit_filter_attr_tests(filtered_suite,
> + parsed_filters[k], filter_action, err);
> +
> + /* Free previous copy of suite */
> + if (k > 0 || filter_glob)
> + kfree(filtered_suite);
> + filtered_suite = new_filtered_suite;
> +
> + if (*err)
> + return filtered;
> + if (IS_ERR(filtered_suite)) {
> + *err = PTR_ERR(filtered_suite);
> + return filtered;
> + }
> + if (!filtered_suite)
> + break;
> + }
> }
> +
> if (!filtered_suite)
> continue;
>
> @@ -145,8 +194,14 @@ static struct suite_set kunit_filter_suites(const struct suite_set *suite_set,
> }
> filtered.end = copy;
>
> - kfree(filter.suite_glob);
> - kfree(filter.test_glob);
> + if (filter_glob) {
> + kfree(parsed_glob.suite_glob);
> + kfree(parsed_glob.test_glob);
> + }
> +
> + if (filter_count)
> + kfree(parsed_filters);
> +
> return filtered;
> }
>
> @@ -206,8 +261,9 @@ int kunit_run_all_tests(void)
> goto out;
> }
>
> - if (filter_glob_param) {
> - suite_set = kunit_filter_suites(&suite_set, filter_glob_param, &err);
> + if (filter_glob_param || filter_param) {
> + suite_set = kunit_filter_suites(&suite_set, filter_glob_param,
> + filter_param, filter_action_param, &err);
> if (err) {
> pr_err("kunit executor: error filtering suites: %d\n", err);
> goto out;
> @@ -223,7 +279,7 @@ int kunit_run_all_tests(void)
> else
> pr_err("kunit executor: unknown action '%s'\n", action_param);
>
> - if (filter_glob_param) { /* a copy was made of each suite */
> + if (filter_glob_param || filter_param) { /* a copy was made of each suite */
> kunit_free_suite_set(suite_set);
> }
>
> diff --git a/lib/kunit/executor_test.c b/lib/kunit/executor_test.c
> index ce6749af374d..d7ab069324b5 100644
> --- a/lib/kunit/executor_test.c
> +++ b/lib/kunit/executor_test.c
> @@ -24,15 +24,15 @@ static struct kunit_case dummy_test_cases[] = {
>
> static void parse_filter_test(struct kunit *test)
> {
> - struct kunit_test_filter filter = {NULL, NULL};
> + struct kunit_glob_filter filter = {NULL, NULL};
>
> - kunit_parse_filter_glob(&filter, "suite");
> + kunit_parse_glob_filter(&filter, "suite");
> KUNIT_EXPECT_STREQ(test, filter.suite_glob, "suite");
> KUNIT_EXPECT_FALSE(test, filter.test_glob);
> kfree(filter.suite_glob);
> kfree(filter.test_glob);
>
> - kunit_parse_filter_glob(&filter, "suite.test");
> + kunit_parse_glob_filter(&filter, "suite.test");
> KUNIT_EXPECT_STREQ(test, filter.suite_glob, "suite");
> KUNIT_EXPECT_STREQ(test, filter.test_glob, "test");
> kfree(filter.suite_glob);
> @@ -50,7 +50,7 @@ static void filter_suites_test(struct kunit *test)
> subsuite[1] = alloc_fake_suite(test, "suite2", dummy_test_cases);
>
> /* Want: suite1, suite2, NULL -> suite2, NULL */
> - got = kunit_filter_suites(&suite_set, "suite2", &err);
> + got = kunit_filter_suites(&suite_set, "suite2", NULL, NULL, &err);
> KUNIT_ASSERT_NOT_ERR_OR_NULL(test, got.start);
> KUNIT_ASSERT_EQ(test, err, 0);
> kfree_at_end(test, got.start);
> @@ -74,7 +74,7 @@ static void filter_suites_test_glob_test(struct kunit *test)
> subsuite[1] = alloc_fake_suite(test, "suite2", dummy_test_cases);
>
> /* Want: suite1, suite2, NULL -> suite2 (just test1), NULL */
> - got = kunit_filter_suites(&suite_set, "suite2.test2", &err);
> + got = kunit_filter_suites(&suite_set, "suite2.test2", NULL, NULL, &err);
> KUNIT_ASSERT_NOT_ERR_OR_NULL(test, got.start);
> KUNIT_ASSERT_EQ(test, err, 0);
> kfree_at_end(test, got.start);
> @@ -100,7 +100,7 @@ static void filter_suites_to_empty_test(struct kunit *test)
> subsuite[0] = alloc_fake_suite(test, "suite1", dummy_test_cases);
> subsuite[1] = alloc_fake_suite(test, "suite2", dummy_test_cases);
>
> - got = kunit_filter_suites(&suite_set, "not_found", &err);
> + got = kunit_filter_suites(&suite_set, "not_found", NULL, NULL, &err);
> KUNIT_ASSERT_EQ(test, err, 0);
> kfree_at_end(test, got.start); /* just in case */
>
> diff --git a/lib/kunit/test.c b/lib/kunit/test.c
> index 9ee55139ecd1..cb9797fa6303 100644
> --- a/lib/kunit/test.c
> +++ b/lib/kunit/test.c
> @@ -613,18 +613,22 @@ int kunit_run_tests(struct kunit_suite *suite)
> kunit_suite_for_each_test_case(suite, test_case) {
> struct kunit test = { .param_value = NULL, .param_index = 0 };
> struct kunit_result_stats param_stats = { 0 };
> - test_case->status = KUNIT_SKIPPED;
>
> kunit_init_test(&test, test_case->name, test_case->log);
> -
> - if (!test_case->generate_params) {
> + if (test_case->status == KUNIT_SKIPPED) {
> + /* Test marked as skip */
> + test.status = KUNIT_SKIPPED;
> + kunit_update_stats(¶m_stats, test.status);
> + } else if (!test_case->generate_params) {
> /* Non-parameterised test. */
> + test_case->status = KUNIT_SKIPPED;
> kunit_run_case_catch_errors(suite, test_case, &test);
> kunit_update_stats(¶m_stats, test.status);
> } else {
> /* Get initial param. */
> param_desc[0] = '\0';
> test.param_value = test_case->generate_params(NULL, param_desc);
> + test_case->status = KUNIT_SKIPPED;
> kunit_log(KERN_INFO, &test, KUNIT_SUBTEST_INDENT KUNIT_SUBTEST_INDENT
> "KTAP version 1\n");
> kunit_log(KERN_INFO, &test, KUNIT_SUBTEST_INDENT KUNIT_SUBTEST_INDENT
> --
> 2.41.0.487.g6d72f3e995-goog
>
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