diff --git a/Documentation/dev-tools/kunit/running_tips.rst b/Documentation/dev-tools/kunit/running_tips.rst
index 30d2147eb5b5..7b6d26a25959 100644
--- a/Documentation/dev-tools/kunit/running_tips.rst
+++ b/Documentation/dev-tools/kunit/running_tips.rst
@@ -25,8 +25,8 @@ It can be handy to create a bash function like:
Running a subset of tests
-------------------------
-``kunit.py run`` accepts an optional glob argument to filter tests. Currently
-this only matches against suite names, but this may change in the future.
+``kunit.py run`` accepts an optional glob argument to filter tests. The format
+is ``"<suite_glob>[.test_glob]"``.
Say that we wanted to run the sysctl tests, we could do so via:
@@ -35,6 +35,13 @@ Say that we wanted to run the sysctl tests, we could do so via:
$ echo -e 'CONFIG_KUNIT=y\nCONFIG_KUNIT_ALL_TESTS=y' > .kunit/.kunitconfig
$ ./tools/testing/kunit/kunit.py run 'sysctl*'
+We can filter down to just the "write" tests via:
+
+.. code-block:: bash
+
+ $ echo -e 'CONFIG_KUNIT=y\nCONFIG_KUNIT_ALL_TESTS=y' > .kunit/.kunitconfig
+ $ ./tools/testing/kunit/kunit.py run 'sysctl*.*write*'
+
We're paying the cost of building more tests than we need this way, but it's
easier than fiddling with ``.kunitconfig`` files or commenting out
``kunit_suite``'s.
diff --git a/lib/kunit/executor.c b/lib/kunit/executor.c
index acd1de436f59..bab3ab940acc 100644
--- a/lib/kunit/executor.c
+++ b/lib/kunit/executor.c
@@ -17,21 +17,80 @@ extern struct kunit_suite * const * const __kunit_suites_end[];
static char *filter_glob_param;
module_param_named(filter_glob, filter_glob_param, charp, 0);
MODULE_PARM_DESC(filter_glob,
- "Filter which KUnit test suites run at boot-time, e.g. list*");
+ "Filter which KUnit test suites/tests run at boot-time, e.g. list* or list*.*del_test");
+
+/* glob_match() needs NULL terminated strings, so we need a copy of filter_glob_param. */
+struct kunit_test_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,
+ const char *filter_glob)
+{
+ const int len = strlen(filter_glob);
+ const char *period = strchr(filter_glob, '.');
+
+ if (!period) {
+ parsed->suite_glob = kmalloc(len, GFP_KERNEL);
+ parsed->test_glob = NULL;
+ strcpy(parsed->suite_glob, filter_glob);
+ return;
+ }
+
+ parsed->suite_glob = kzalloc(period - filter_glob + 1, GFP_KERNEL);
+ parsed->test_glob = kzalloc(len - (period - filter_glob) + 1, GFP_KERNEL);
+
+ strncpy(parsed->suite_glob, filter_glob, period - filter_glob);
+ strncpy(parsed->test_glob, period + 1, len - (period - filter_glob));
+}
+
+/* Create a copy of suite with only tests that match test_glob. */
+static struct kunit_suite *
+kunit_filter_tests(struct kunit_suite *const suite, const char *test_glob)
+{
+ int n = 0;
+ struct kunit_case *filtered, *test_case;
+ struct kunit_suite *copy;
+
+ kunit_suite_for_each_test_case(suite, test_case) {
+ if (!test_glob || glob_match(test_glob, test_case->name))
+ ++n;
+ }
+
+ if (n == 0)
+ return NULL;
+
+ /* Use memcpy to workaround copy->name being const. */
+ copy = kmalloc(sizeof(*copy), GFP_KERNEL);
+ memcpy(copy, suite, sizeof(*copy));
+
+ filtered = kcalloc(n + 1, sizeof(*filtered), GFP_KERNEL);
+
+ n = 0;
+ kunit_suite_for_each_test_case(suite, test_case) {
+ if (!test_glob || glob_match(test_glob, test_case->name))
+ filtered[n++] = *test_case;
+ }
+
+ copy->test_cases = filtered;
+ return copy;
+}
static char *kunit_shutdown;
core_param(kunit_shutdown, kunit_shutdown, charp, 0644);
static struct kunit_suite * const *
kunit_filter_subsuite(struct kunit_suite * const * const subsuite,
- const char *filter_glob)
+ struct kunit_test_filter *filter)
{
int i, n = 0;
- struct kunit_suite **filtered;
+ struct kunit_suite **filtered, *filtered_suite;
n = 0;
- for (i = 0; subsuite[i] != NULL; ++i) {
- if (glob_match(filter_glob, subsuite[i]->name))
+ for (i = 0; subsuite[i]; ++i) {
+ if (glob_match(filter->suite_glob, subsuite[i]->name))
++n;
}
@@ -44,8 +103,11 @@ kunit_filter_subsuite(struct kunit_suite * const * const subsuite,
n = 0;
for (i = 0; subsuite[i] != NULL; ++i) {
- if (glob_match(filter_glob, subsuite[i]->name))
- filtered[n++] = subsuite[i];
+ if (!glob_match(filter->suite_glob, subsuite[i]->name))
+ continue;
+ filtered_suite = kunit_filter_tests(subsuite[i], filter->test_glob);
+ if (filtered_suite)
+ filtered[n++] = filtered_suite;
}
filtered[n] = NULL;
@@ -57,12 +119,32 @@ struct suite_set {
struct kunit_suite * const * const *end;
};
+static void kunit_free_subsuite(struct kunit_suite * const *subsuite)
+{
+ unsigned int i;
+
+ for (i = 0; subsuite[i]; i++)
+ kfree(subsuite[i]);
+
+ kfree(subsuite);
+}
+
+static void kunit_free_suite_set(struct suite_set suite_set)
+{
+ struct kunit_suite * const * const *suites;
+
+ for (suites = suite_set.start; suites < suite_set.end; suites++)
+ kunit_free_subsuite(*suites);
+ kfree(suite_set.start);
+}
+
static struct suite_set kunit_filter_suites(const struct suite_set *suite_set,
const char *filter_glob)
{
int i;
struct kunit_suite * const **copy, * const *filtered_subsuite;
struct suite_set filtered;
+ struct kunit_test_filter filter;
const size_t max = suite_set->end - suite_set->start;
@@ -73,12 +155,17 @@ 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; i < max; ++i) {
- filtered_subsuite = kunit_filter_subsuite(suite_set->start[i], filter_glob);
+ filtered_subsuite = kunit_filter_subsuite(suite_set->start[i], &filter);
if (filtered_subsuite)
*copy++ = filtered_subsuite;
}
filtered.end = copy;
+
+ kfree(filter.suite_glob);
+ kfree(filter.test_glob);
return filtered;
}
@@ -126,9 +213,7 @@ int kunit_run_all_tests(void)
__kunit_test_suites_init(*suites);
if (filter_glob_param) { /* a copy was made of each array */
- for (suites = suite_set.start; suites < suite_set.end; suites++)
- kfree(*suites);
- kfree(suite_set.start);
+ kunit_free_suite_set(suite_set);
}
kunit_handle_shutdown();
diff --git a/lib/kunit/executor_test.c b/lib/kunit/executor_test.c
index e14a18af573d..edbd8184dcd7 100644
--- a/lib/kunit/executor_test.c
+++ b/lib/kunit/executor_test.c
@@ -9,38 +9,103 @@
#include <kunit/test.h>
static void kfree_at_end(struct kunit *test, const void *to_free);
+static void free_subsuite_at_end(struct kunit *test,
+ struct kunit_suite *const *to_free);
static struct kunit_suite *alloc_fake_suite(struct kunit *test,
- const char *suite_name);
+ const char *suite_name,
+ struct kunit_case *test_cases);
+
+static void dummy_test(struct kunit *test) {}
+
+static struct kunit_case dummy_test_cases[] = {
+ /* .run_case is not important, just needs to be non-NULL */
+ { .name = "test1", .run_case = dummy_test },
+ { .name = "test2", .run_case = dummy_test },
+ {},
+};
+
+static void parse_filter_test(struct kunit *test)
+{
+ struct kunit_test_filter filter = {NULL, NULL};
+
+ kunit_parse_filter_glob(&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_EXPECT_STREQ(test, filter.suite_glob, "suite");
+ KUNIT_EXPECT_STREQ(test, filter.test_glob, "test");
+ kfree(filter.suite_glob);
+ kfree(filter.test_glob);
+}
static void filter_subsuite_test(struct kunit *test)
{
struct kunit_suite *subsuite[3] = {NULL, NULL, NULL};
struct kunit_suite * const *filtered;
+ struct kunit_test_filter filter = {
+ .suite_glob = "suite2",
+ .test_glob = NULL,
+ };
- subsuite[0] = alloc_fake_suite(test, "suite1");
- subsuite[1] = alloc_fake_suite(test, "suite2");
+ subsuite[0] = alloc_fake_suite(test, "suite1", dummy_test_cases);
+ subsuite[1] = alloc_fake_suite(test, "suite2", dummy_test_cases);
/* Want: suite1, suite2, NULL -> suite2, NULL */
- filtered = kunit_filter_subsuite(subsuite, "suite2*");
+ filtered = kunit_filter_subsuite(subsuite, &filter);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filtered);
- kfree_at_end(test, filtered);
+ free_subsuite_at_end(test, filtered);
+ /* Validate we just have suite2 */
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filtered[0]);
KUNIT_EXPECT_STREQ(test, (const char *)filtered[0]->name, "suite2");
-
KUNIT_EXPECT_FALSE(test, filtered[1]);
}
+static void filter_subsuite_test_glob_test(struct kunit *test)
+{
+ struct kunit_suite *subsuite[3] = {NULL, NULL, NULL};
+ struct kunit_suite * const *filtered;
+ struct kunit_test_filter filter = {
+ .suite_glob = "suite2",
+ .test_glob = "test2",
+ };
+
+ subsuite[0] = alloc_fake_suite(test, "suite1", dummy_test_cases);
+ subsuite[1] = alloc_fake_suite(test, "suite2", dummy_test_cases);
+
+ /* Want: suite1, suite2, NULL -> suite2 (just test1), NULL */
+ filtered = kunit_filter_subsuite(subsuite, &filter);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filtered);
+ free_subsuite_at_end(test, filtered);
+
+ /* Validate we just have suite2 */
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filtered[0]);
+ KUNIT_EXPECT_STREQ(test, (const char *)filtered[0]->name, "suite2");
+ KUNIT_EXPECT_FALSE(test, filtered[1]);
+
+ /* Now validate we just have test2 */
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filtered[0]->test_cases);
+ KUNIT_EXPECT_STREQ(test, (const char *)filtered[0]->test_cases[0].name, "test2");
+ KUNIT_EXPECT_FALSE(test, filtered[0]->test_cases[1].name);
+}
+
static void filter_subsuite_to_empty_test(struct kunit *test)
{
struct kunit_suite *subsuite[3] = {NULL, NULL, NULL};
struct kunit_suite * const *filtered;
+ struct kunit_test_filter filter = {
+ .suite_glob = "not_found",
+ .test_glob = NULL,
+ };
- subsuite[0] = alloc_fake_suite(test, "suite1");
- subsuite[1] = alloc_fake_suite(test, "suite2");
+ subsuite[0] = alloc_fake_suite(test, "suite1", dummy_test_cases);
+ subsuite[1] = alloc_fake_suite(test, "suite2", dummy_test_cases);
- filtered = kunit_filter_subsuite(subsuite, "not_found");
- kfree_at_end(test, filtered); /* just in case */
+ filtered = kunit_filter_subsuite(subsuite, &filter);
+ free_subsuite_at_end(test, filtered); /* just in case */
KUNIT_EXPECT_FALSE_MSG(test, filtered,
"should be NULL to indicate no match");
@@ -52,7 +117,7 @@ static void kfree_subsuites_at_end(struct kunit *test, struct suite_set *suite_s
kfree_at_end(test, suite_set->start);
for (suites = suite_set->start; suites < suite_set->end; suites++)
- kfree_at_end(test, *suites);
+ free_subsuite_at_end(test, *suites);
}
static void filter_suites_test(struct kunit *test)
@@ -74,8 +139,8 @@ static void filter_suites_test(struct kunit *test)
struct suite_set filtered = {.start = NULL, .end = NULL};
/* Emulate two files, each having one suite */
- subsuites[0][0] = alloc_fake_suite(test, "suite0");
- subsuites[1][0] = alloc_fake_suite(test, "suite1");
+ subsuites[0][0] = alloc_fake_suite(test, "suite0", dummy_test_cases);
+ subsuites[1][0] = alloc_fake_suite(test, "suite1", dummy_test_cases);
/* Filter out suite1 */
filtered = kunit_filter_suites(&suite_set, "suite0");
@@ -88,7 +153,9 @@ static void filter_suites_test(struct kunit *test)
}
static struct kunit_case executor_test_cases[] = {
+ KUNIT_CASE(parse_filter_test),
KUNIT_CASE(filter_subsuite_test),
+ KUNIT_CASE(filter_subsuite_test_glob_test),
KUNIT_CASE(filter_subsuite_to_empty_test),
KUNIT_CASE(filter_suites_test),
{}
@@ -120,14 +187,30 @@ static void kfree_at_end(struct kunit *test, const void *to_free)
(void *)to_free);
}
+static void free_subsuite_res_free(struct kunit_resource *res)
+{
+ kunit_free_subsuite(res->data);
+}
+
+static void free_subsuite_at_end(struct kunit *test,
+ struct kunit_suite *const *to_free)
+{
+ if (IS_ERR_OR_NULL(to_free))
+ return;
+ kunit_alloc_resource(test, NULL, free_subsuite_res_free,
+ GFP_KERNEL, (void *)to_free);
+}
+
static struct kunit_suite *alloc_fake_suite(struct kunit *test,
- const char *suite_name)
+ const char *suite_name,
+ struct kunit_case *test_cases)
{
struct kunit_suite *suite;
/* We normally never expect to allocate suites, hence the non-const cast. */
suite = kunit_kzalloc(test, sizeof(*suite), GFP_KERNEL);
strncpy((char *)suite->name, suite_name, sizeof(suite->name) - 1);
+ suite->test_cases = test_cases;
return suite;
}
diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py
index ac35c61f65f5..8fa2ccd4f88f 100755
--- a/tools/testing/kunit/kunit.py
+++ b/tools/testing/kunit/kunit.py
@@ -263,9 +263,8 @@ def add_exec_opts(parser) -> None:
default=300,
metavar='timeout')
parser.add_argument('filter_glob',
- help='maximum number of seconds to allow for all tests '
- 'to run. This does not include time taken to build the '
- 'tests.',
+ help='Filter which KUnit test suites/tests run at '
+ 'boot-time, e.g. list* or list*.*del_test',
type=str,
nargs='?',
default='',