On Mon, 7 Aug 2023 at 18:28, Janusz Krzysztofik janusz.krzysztofik@linux.intel.com wrote:

According to KTAP specification[1], results should always start from a header that provides a TAP protocol version, followed by a test plan with a count of items to be executed. That pattern should be followed at each nesting level. In the current implementation of the top-most, i.e., test suite level, those rules apply only for test suites built into the kernel, executed and reported on boot. Results submitted to dmesg from kunit test modules loaded later are missing those top-level headers.

As a consequence, if a kunit test module provides more than one test suite then, without the top level test plan, external tools that are parsing dmesg for kunit test output are not able to tell how many test suites should be expected and whether to continue parsing after complete output from the first test suite is collected.

Submit the top-level headers also from the kunit test module notifier initialization callback.

v3: Fix new name of a structure moved to kunit namespace not updated in executor_test functions (lkp@intel.com). v2: Use kunit_exec_run_tests() (Mauro, Rae), but prevent it from emitting the headers when called on load of non-test modules.

[1] https://docs.kernel.org/dev-tools/ktap.html#

Signed-off-by: Janusz Krzysztofik janusz.krzysztofik@linux.intel.com Cc: Mauro Carvalho Chehab mchehab@kernel.org Cc: Rae Moar rmoar@google.com

---

Thanks! This is a long overdue feature, and it seems to work well here.

Reviewed-by: David Gow davidgow@google.com

Cheers, -- David

include/kunit/test.h | 8 ++++++++ lib/kunit/executor.c | 42 +++++++++++++++++++++------------------ lib/kunit/executor_test.c | 36 ++++++++++++++++++++++----------- lib/kunit/test.c | 6 +++++- 4 files changed, 60 insertions(+), 32 deletions(-)

diff --git a/include/kunit/test.h b/include/kunit/test.h index 011e0d6bb506c..3d002e6b252f2 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -256,6 +256,12 @@ struct kunit_suite { int suite_init_err; };

+/* Stores an array of suites, end points one past the end */ +struct kunit_suite_set {

•   struct kunit_suite * const *start;
  

•   struct kunit_suite * const *end;
  

+};

/**

• struct kunit - represents a running instance of a test.

@@ -317,6 +323,8 @@ int __kunit_test_suites_init(struct kunit_suite * const * const suites, int num_

void __kunit_test_suites_exit(struct kunit_suite **suites, int num_suites);

+void kunit_exec_run_tests(struct kunit_suite_set *suite_set, bool builtin);

#if IS_BUILTIN(CONFIG_KUNIT) int kunit_run_all_tests(void); #else diff --git a/lib/kunit/executor.c b/lib/kunit/executor.c index dc295150c4e57..5ef90c334eb0f 100644 --- a/lib/kunit/executor.c +++ b/lib/kunit/executor.c @@ -104,13 +104,7 @@ kunit_filter_glob_tests(const struct kunit_suite *const suite, const char *test_ static char *kunit_shutdown; core_param(kunit_shutdown, kunit_shutdown, charp, 0644);

-/* Stores an array of suites, end points one past the end */ -struct suite_set {

•   struct kunit_suite * const *start;
  

•   struct kunit_suite * const *end;
  

-};

-static void kunit_free_suite_set(struct suite_set suite_set) +static void kunit_free_suite_set(struct kunit_suite_set suite_set) { struct kunit_suite * const *suites;

@@ -119,16 +113,17 @@ static void kunit_free_suite_set(struct suite_set suite_set) kfree(suite_set.start); }

-static struct suite_set kunit_filter_suites(const struct suite_set *suite_set,

•                                       const char *filter_glob,
  

•                                           char *filters,
  

•                                           char *filter_action,
  

•                                       int *err)
  

+static struct kunit_suite_set +kunit_filter_suites(const struct kunit_suite_set *suite_set,

•               const char *filter_glob,
  

•               char *filters,
  

•               char *filter_action,
  

•               int *err)
  

{ int i, j, k; int filter_count = 0; struct kunit_suite **copy, **copy_start, *filtered_suite, *new_filtered_suite;

•   struct suite_set filtered = {NULL, NULL};
  

•   struct kunit_suite_set filtered = {NULL, NULL};
    struct kunit_glob_filter parsed_glob;
    struct kunit_attr_filter *parsed_filters = NULL;
  
  

@@ -230,17 +225,24 @@ static void kunit_handle_shutdown(void)

}

-static void kunit_exec_run_tests(struct suite_set *suite_set) +#endif

+void kunit_exec_run_tests(struct kunit_suite_set *suite_set, bool builtin) { size_t num_suites = suite_set->end - suite_set->start;

•   pr_info("KTAP version 1\n");
  

•   pr_info("1..%zu\n", num_suites);
  

•   if (builtin || num_suites) {
  

•           pr_info("KTAP version 1\n");
  

•           pr_info("1..%zu\n", num_suites);
  

•   }
  
    __kunit_test_suites_init(suite_set->start, num_suites);
  

}

-static void kunit_exec_list_tests(struct suite_set *suite_set, bool include_attr) +#if IS_BUILTIN(CONFIG_KUNIT)

+static void kunit_exec_list_tests(struct kunit_suite_set *suite_set,

•                             bool include_attr)
  

{ struct kunit_suite * const *suites; struct kunit_case *test_case; @@ -265,7 +267,9 @@ static void kunit_exec_list_tests(struct suite_set *suite_set, bool include_attr

int kunit_run_all_tests(void) {

•   struct suite_set suite_set = {__kunit_suites_start, __kunit_suites_end};
  

•   struct kunit_suite_set suite_set = {
  

•           __kunit_suites_start, __kunit_suites_end,
  

•   };
    int err = 0;
    if (!kunit_enabled()) {
            pr_info("kunit: disabled\n");
  

@@ -282,7 +286,7 @@ int kunit_run_all_tests(void) }

    if (!action_param)

•           kunit_exec_run_tests(&suite_set);
  

•           kunit_exec_run_tests(&suite_set, true);
    else if (strcmp(action_param, "list") == 0)
            kunit_exec_list_tests(&suite_set, false);
    else if (strcmp(action_param, "list_attr") == 0)
  

diff --git a/lib/kunit/executor_test.c b/lib/kunit/executor_test.c index 3e0a1c99cb4e8..4084071d0eb5b 100644 --- a/lib/kunit/executor_test.c +++ b/lib/kunit/executor_test.c @@ -43,8 +43,10 @@ static void parse_filter_test(struct kunit *test) static void filter_suites_test(struct kunit *test) { struct kunit_suite *subsuite[3] = {NULL, NULL};

•   struct suite_set suite_set = {.start = subsuite, .end = &subsuite[2]};
  

•   struct suite_set got;
  

•   struct kunit_suite_set suite_set = {
  

•           .start = subsuite, .end = &subsuite[2],
  

•   };
  

•   struct kunit_suite_set got;
    int err = 0;
  
    subsuite[0] = alloc_fake_suite(test, "suite1", dummy_test_cases);
  

@@ -67,8 +69,10 @@ static void filter_suites_test(struct kunit *test) static void filter_suites_test_glob_test(struct kunit *test) { struct kunit_suite *subsuite[3] = {NULL, NULL};

•   struct suite_set suite_set = {.start = subsuite, .end = &subsuite[2]};
  

•   struct suite_set got;
  

•   struct kunit_suite_set suite_set = {
  

•           .start = subsuite, .end = &subsuite[2],
  

•   };
  

•   struct kunit_suite_set got;
    int err = 0;
  
    subsuite[0] = alloc_fake_suite(test, "suite1", dummy_test_cases);
  

@@ -94,8 +98,10 @@ static void filter_suites_test_glob_test(struct kunit *test) static void filter_suites_to_empty_test(struct kunit *test) { struct kunit_suite *subsuite[3] = {NULL, NULL};

•   struct suite_set suite_set = {.start = subsuite, .end = &subsuite[2]};
  

•   struct suite_set got;
  

•   struct kunit_suite_set suite_set = {
  

•           .start = subsuite, .end = &subsuite[2],
  

•   };
  

•   struct kunit_suite_set got;
    int err = 0;
  
    subsuite[0] = alloc_fake_suite(test, "suite1", dummy_test_cases);
  

@@ -144,8 +150,10 @@ static struct kunit_case dummy_attr_test_cases[] = { static void filter_attr_test(struct kunit *test) { struct kunit_suite *subsuite[3] = {NULL, NULL};

•   struct suite_set suite_set = {.start = subsuite, .end = &subsuite[2]};
  

•   struct suite_set got;
  

•   struct kunit_suite_set suite_set = {
  

•           .start = subsuite, .end = &subsuite[2],
  

•   };
  

•   struct kunit_suite_set got;
    int err = 0;
  
    subsuite[0] = alloc_fake_suite(test, "normal_suite", dummy_attr_test_cases);
  

@@ -179,8 +187,10 @@ static void filter_attr_test(struct kunit *test) static void filter_attr_empty_test(struct kunit *test) { struct kunit_suite *subsuite[3] = {NULL, NULL};

•   struct suite_set suite_set = {.start = subsuite, .end = &subsuite[2]};
  

•   struct suite_set got;
  

•   struct kunit_suite_set suite_set = {
  

•           .start = subsuite, .end = &subsuite[2],
  

•   };
  

•   struct kunit_suite_set got;
    int err = 0;
  
    subsuite[0] = alloc_fake_suite(test, "suite1", dummy_attr_test_cases);
  

@@ -197,8 +207,10 @@ static void filter_attr_empty_test(struct kunit *test) static void filter_attr_skip_test(struct kunit *test) { struct kunit_suite *subsuite[2] = {NULL};

•   struct suite_set suite_set = {.start = subsuite, .end = &subsuite[1]};
  

•   struct suite_set got;
  

•   struct kunit_suite_set suite_set = {
  

•           .start = subsuite, .end = &subsuite[1],
  

•   };
  

•   struct kunit_suite_set got;
    int err = 0;
  
    subsuite[0] = alloc_fake_suite(test, "suite", dummy_attr_test_cases);
  

diff --git a/lib/kunit/test.c b/lib/kunit/test.c index cb9797fa6303f..8b2808068497f 100644 --- a/lib/kunit/test.c +++ b/lib/kunit/test.c @@ -736,7 +736,11 @@ EXPORT_SYMBOL_GPL(__kunit_test_suites_exit); #ifdef CONFIG_MODULES static void kunit_module_init(struct module *mod) {

•   __kunit_test_suites_init(mod->kunit_suites, mod->num_kunit_suites);
  

•   struct kunit_suite_set suite_set = {
  

•           mod->kunit_suites, mod->kunit_suites + mod->num_kunit_suites,
  

•   };
  

•   kunit_exec_run_tests(&suite_set, false);
  

}

static void kunit_module_exit(struct module *mod)

2.41.0

On Mon, 7 Aug 2023 at 18:28, Janusz Krzysztofik janusz.krzysztofik@linux.intel.com wrote:

Results from kunit tests reported via dmesg may be interleaved with other kernel messages. When parsing dmesg for modular kunit results in real time, external tools, e.g., Intel GPU tools (IGT), may want to insert their own test name markers into dmesg at the start of each test, before any kernel message related to that test appears there, so existing upper level test result parsers have no doubt which test to blame for a specific kernel message. Unfortunately, kunit reports names of tests only at their completion (with the exeption of a not standarized "# Subtest: <name>" header above a test plan of each test suite or parametrized test).

External tools could be able to insert their own "start of the test" markers with test names included if they new those names in advance. Test names could be learned from a list if provided by a kunit test module.

There exists a feature of listing kunit tests without actually executing them, but it is now limited to configurations with the kunit module built in and covers only built-in tests, already available at boot time. Moreover, switching from list to normal mode requires reboot. If that feature was also available when kunit is built as a module, userspace could load the module with action=list parameter, load some kunit test modules they are interested in and learn about the list of tests provided by those modules, then unload them, reload the kunit module in normal mode and execute the tests with their lists already known.

Extend kunit module notifier initialization callback with a processing path for only listing the tests provided by a module if the kunit action parameter is set to "list" or "list_attr". For user convenience, make the kunit.action parameter visible in sysfs.

v2: Don't use a different format, use kunit_exec_list_tests() (Rae),

• refresh on top of new attributes patches, handle newly introduced kunit.action=list_attr case (Rae).

Signed-off-by: Janusz Krzysztofik janusz.krzysztofik@linux.intel.com Cc: Rae Moar rmoar@google.com

---

Looks good, thanks!

Reviewed-by: David Gow davidgow@google.com

include/kunit/test.h | 2 ++ lib/kunit/executor.c | 28 +++++++++++++++++----------- lib/kunit/test.c | 18 +++++++++++++++--- 3 files changed, 34 insertions(+), 14 deletions(-)

diff --git a/include/kunit/test.h b/include/kunit/test.h index 3d002e6b252f2..6a338a3267ed5 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -309,6 +309,7 @@ static inline void kunit_set_failure(struct kunit *test) }

bool kunit_enabled(void); +const char *kunit_action(void);

void kunit_init_test(struct kunit *test, const char *name, char *log);

@@ -324,6 +325,7 @@ int __kunit_test_suites_init(struct kunit_suite * const * const suites, int num_ void __kunit_test_suites_exit(struct kunit_suite **suites, int num_suites);

void kunit_exec_run_tests(struct kunit_suite_set *suite_set, bool builtin); +void kunit_exec_list_tests(struct kunit_suite_set *suite_set, bool include_attr);

#if IS_BUILTIN(CONFIG_KUNIT) int kunit_run_all_tests(void); diff --git a/lib/kunit/executor.c b/lib/kunit/executor.c index 5ef90c334eb0f..e877c1f1e75c8 100644 --- a/lib/kunit/executor.c +++ b/lib/kunit/executor.c @@ -13,22 +13,29 @@ extern struct kunit_suite * const __kunit_suites_start[]; extern struct kunit_suite * const __kunit_suites_end[];

+static char *action_param;

+module_param_named(action, action_param, charp, 0400); +MODULE_PARM_DESC(action,

•            "Changes KUnit executor behavior, valid values are:\n"
  

•            "<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");
  

+const char *kunit_action(void)

I'm not _totally_ sold on the name kunit_action() for a function here, but none of the other options I can think of (kunit_get_action(), kunit_action_param(), kunit_action_value(), etc) sound better, so let's go with it.

+{

•   return action_param;
  

+}

#if IS_BUILTIN(CONFIG_KUNIT)

static char *filter_glob_param; -static char *action_param; static char *filter_param; static char *filter_action_param;

module_param_named(filter_glob, filter_glob_param, charp, 0); MODULE_PARM_DESC(filter_glob, "Filter which KUnit test suites/tests run at boot-time, e.g. list* or list*.*del_test"); -module_param_named(action, action_param, charp, 0); -MODULE_PARM_DESC(action,

•            "Changes KUnit executor behavior, valid values are:\n"
  

•            "<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"); @@ -239,10 +246,7 @@ void kunit_exec_run_tests(struct kunit_suite_set *suite_set, bool builtin) __kunit_test_suites_init(suite_set->start, num_suites); }

-#if IS_BUILTIN(CONFIG_KUNIT)

-static void kunit_exec_list_tests(struct kunit_suite_set *suite_set,

•                             bool include_attr)
  

+void kunit_exec_list_tests(struct kunit_suite_set *suite_set, bool include_attr) { struct kunit_suite * const *suites; struct kunit_case *test_case; @@ -265,6 +269,8 @@ static void kunit_exec_list_tests(struct kunit_suite_set *suite_set, } }

+#if IS_BUILTIN(CONFIG_KUNIT)

int kunit_run_all_tests(void) { struct kunit_suite_set suite_set = { diff --git a/lib/kunit/test.c b/lib/kunit/test.c index 8b2808068497f..5232a43737826 100644 --- a/lib/kunit/test.c +++ b/lib/kunit/test.c @@ -739,13 +739,25 @@ static void kunit_module_init(struct module *mod) struct kunit_suite_set suite_set = { mod->kunit_suites, mod->kunit_suites + mod->num_kunit_suites, };

•   kunit_exec_run_tests(&suite_set, false);
  

•   const char *action = kunit_action();
  

•   if (!action)
  

•           kunit_exec_run_tests(&suite_set, false);
  

•   else if (!strcmp(action, "list"))
  

•           kunit_exec_list_tests(&suite_set, false);
  

•   else if (!strcmp(action, "list_attr"))
  

•           kunit_exec_list_tests(&suite_set, true);
  

•   else
  

•           pr_err("kunit: unknown action '%s'\n", action);
  

}

static void kunit_module_exit(struct module *mod) {

•   __kunit_test_suites_exit(mod->kunit_suites, mod->num_kunit_suites);
  

•   const char *action = kunit_action();
  

•   if (!action)
  

•           __kunit_test_suites_exit(mod->kunit_suites,
  

•                                    mod->num_kunit_suites);
  

}

static int kunit_module_notify(struct notifier_block *nb, unsigned long val,

2.41.0

On Mon, 7 Aug 2023 at 18:28, Janusz Krzysztofik janusz.krzysztofik@linux.intel.com wrote:

External tools, e.g., Intel GPU tools (IGT), support execution of individual selftests provided by kernel modules. That could be also applicable to kunit test modules if they provided test filtering. But test filtering is now possible only when kunit code is built into the kernel. Moreover, a filter can be specified only at boot time, then reboot is required each time a different filter is needed.

Build the test filtering code also when kunit is configured as a module, expose test filtering functions to other kunit source files, and use them in kunit module notifier callback functions. Userspace can then reload the kunit module with a value of the filter_glob parameter tuned to a specific kunit test module every time it wants to limit the scope of tests executed on that module load. Make the kunit.filter* parameters visible in sysfs for user convenience.

v5: Refresh on tpp of attributes filtering fix v4: Refresh on top of newly applied attributes patches and changes introdced by new versions of other patches submitted in series with this one. v3: Fix CONFIG_GLOB, required by filtering functions, not selected when building as a module (lkp@intel.com). v2: Fix new name of a structure moved to kunit namespace not updated across all uses (lkp@intel.com).

Signed-off-by: Janusz Krzysztofik janusz.krzysztofik@linux.intel.com

This works a treat here. It's a bit annoying to have to unload / reload the module to change the filter, which might be something for us to consider in the future (maybe via a debugfs entry?), but this is nevertheless an improvement.

Reviewed-by: David Gow davidgow@google.com

Cheers, -- David

include/kunit/test.h | 11 ++++++++ lib/kunit/Kconfig | 2 +- lib/kunit/executor.c | 63 ++++++++++++++++++++++++++------------------ lib/kunit/test.c | 17 ++++++++++++ 4 files changed, 66 insertions(+), 27 deletions(-)

diff --git a/include/kunit/test.h b/include/kunit/test.h index 6a338a3267ed5..d33114097d0d0 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -310,6 +310,9 @@ static inline void kunit_set_failure(struct kunit *test)

bool kunit_enabled(void); const char *kunit_action(void); +const char *kunit_filter_glob(void); +char *kunit_filter(void); +char *kunit_filter_action(void);

void kunit_init_test(struct kunit *test, const char *name, char *log);

@@ -320,6 +323,14 @@ size_t kunit_suite_num_test_cases(struct kunit_suite *suite); unsigned int kunit_test_case_num(struct kunit_suite *suite, struct kunit_case *test_case);

+struct kunit_suite_set +kunit_filter_suites(const struct kunit_suite_set *suite_set,

•               const char *filter_glob,
  

•               char *filters,
  

•               char *filter_action,
  

•               int *err);
  

+void kunit_free_suite_set(struct kunit_suite_set suite_set);

int __kunit_test_suites_init(struct kunit_suite * const * const suites, int num_suites);

void __kunit_test_suites_exit(struct kunit_suite **suites, int num_suites); diff --git a/lib/kunit/Kconfig b/lib/kunit/Kconfig index 626719b95badd..68a6daec0aef1 100644 --- a/lib/kunit/Kconfig +++ b/lib/kunit/Kconfig @@ -4,7 +4,7 @@

menuconfig KUNIT tristate "KUnit - Enable support for unit tests"

•   select GLOB if KUNIT=y
  

•   select GLOB
    help
      Enables support for kernel unit tests (KUnit), a lightweight unit
      testing and mocking framework for the Linux kernel. These tests are
  

diff --git a/lib/kunit/executor.c b/lib/kunit/executor.c index e877c1f1e75c8..5181aa2e760b6 100644 --- a/lib/kunit/executor.c +++ b/lib/kunit/executor.c @@ -27,24 +27,37 @@ const char *kunit_action(void) return action_param; }

-#if IS_BUILTIN(CONFIG_KUNIT)

static char *filter_glob_param; static char *filter_param; static char *filter_action_param;

-module_param_named(filter_glob, filter_glob_param, charp, 0); +module_param_named(filter_glob, filter_glob_param, charp, 0400); MODULE_PARM_DESC(filter_glob, "Filter which KUnit test suites/tests run at boot-time, e.g. list* or list*.*del_test"); -module_param_named(filter, filter_param, charp, 0); +module_param_named(filter, filter_param, charp, 0400); 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_param_named(filter_action, filter_action_param, charp, 0400); 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");

+const char *kunit_filter_glob(void) +{

•   return filter_glob_param;
  

+}

+char *kunit_filter(void) +{

•   return filter_param;
  

+}

+char *kunit_filter_action(void) +{

•   return filter_action_param;
  

+}

/* glob_match() needs NULL terminated strings, so we need a copy of filter_glob_param. */ struct kunit_glob_filter { char *suite_glob; @@ -108,10 +121,7 @@ kunit_filter_glob_tests(const struct kunit_suite *const suite, const char *test_ return copy; }

-static char *kunit_shutdown; -core_param(kunit_shutdown, kunit_shutdown, charp, 0644);

-static void kunit_free_suite_set(struct kunit_suite_set suite_set) +void kunit_free_suite_set(struct kunit_suite_set suite_set) { struct kunit_suite * const *suites;

@@ -120,7 +130,7 @@ static void kunit_free_suite_set(struct kunit_suite_set suite_set) kfree(suite_set.start); }

-static struct kunit_suite_set +struct kunit_suite_set kunit_filter_suites(const struct kunit_suite_set *suite_set, const char *filter_glob, char *filters, @@ -218,22 +228,6 @@ kunit_filter_suites(const struct kunit_suite_set *suite_set, return filtered; }

-static void kunit_handle_shutdown(void) -{

•   if (!kunit_shutdown)
  

•           return;
  

•   if (!strcmp(kunit_shutdown, "poweroff"))
  

•           kernel_power_off();
  

•   else if (!strcmp(kunit_shutdown, "halt"))
  

•           kernel_halt();
  

•   else if (!strcmp(kunit_shutdown, "reboot"))
  

•           kernel_restart(NULL);
  

-}

-#endif

void kunit_exec_run_tests(struct kunit_suite_set *suite_set, bool builtin) { size_t num_suites = suite_set->end - suite_set->start; @@ -271,6 +265,23 @@ void kunit_exec_list_tests(struct kunit_suite_set *suite_set, bool include_attr)

#if IS_BUILTIN(CONFIG_KUNIT)

+static char *kunit_shutdown; +core_param(kunit_shutdown, kunit_shutdown, charp, 0644);

+static void kunit_handle_shutdown(void) +{

•   if (!kunit_shutdown)
  

•           return;
  

•   if (!strcmp(kunit_shutdown, "poweroff"))
  

•           kernel_power_off();
  

•   else if (!strcmp(kunit_shutdown, "halt"))
  

•           kernel_halt();
  

•   else if (!strcmp(kunit_shutdown, "reboot"))
  

•           kernel_restart(NULL);
  

+}

int kunit_run_all_tests(void) { struct kunit_suite_set suite_set = { diff --git a/lib/kunit/test.c b/lib/kunit/test.c index 5232a43737826..49698a168437a 100644 --- a/lib/kunit/test.c +++ b/lib/kunit/test.c @@ -740,6 +740,17 @@ static void kunit_module_init(struct module *mod) mod->kunit_suites, mod->kunit_suites + mod->num_kunit_suites, }; const char *action = kunit_action();

•   int err = 0;
  

•   suite_set = kunit_filter_suites(&suite_set,
  

•                                   kunit_filter_glob() ?: "*.*",
  

I've just learnt a new gcc extension! A bit scary, but it works on clang as well, so I'm fine with it.

•                                   kunit_filter(), kunit_filter_action(),
  

•                                   &err);
  

•   if (err)
  

•           pr_err("kunit module: error filtering suites: %d\n", err);
  

•   mod->kunit_suites = (struct kunit_suite **)suite_set.start;
  

•   mod->num_kunit_suites = suite_set.end - suite_set.start;
  
    if (!action)
            kunit_exec_run_tests(&suite_set, false);
  

@@ -753,11 +764,17 @@ static void kunit_module_init(struct module *mod)

static void kunit_module_exit(struct module *mod) {

•   struct kunit_suite_set suite_set = {
  

•           mod->kunit_suites, mod->kunit_suites + mod->num_kunit_suites,
  

•   };
    const char *action = kunit_action();
  
    if (!action)
            __kunit_test_suites_exit(mod->kunit_suites,
                                     mod->num_kunit_suites);
  

•   if (suite_set.start)
  

•           kunit_free_suite_set(suite_set);
  

}

static int kunit_module_notify(struct notifier_block *nb, unsigned long val,

2.41.0