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-rw-r--r--lib/kunit/Kconfig1
-rw-r--r--lib/kunit/executor.c93
2 files changed, 85 insertions, 9 deletions
diff --git a/lib/kunit/Kconfig b/lib/kunit/Kconfig
index 00909e6a2443..0b5dfb001bac 100644
--- a/lib/kunit/Kconfig
+++ b/lib/kunit/Kconfig
@@ -4,6 +4,7 @@
menuconfig KUNIT
tristate "KUnit - Enable support for unit tests"
+ select GLOB if KUNIT=y
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 a95742a4ece7..15832ed44668 100644
--- a/lib/kunit/executor.c
+++ b/lib/kunit/executor.c
@@ -1,6 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
#include <kunit/test.h>
+#include <linux/glob.h>
+#include <linux/moduleparam.h>
/*
* These symbols point to the .kunit_test_suites section and are defined in
@@ -11,14 +13,81 @@ extern struct kunit_suite * const * const __kunit_suites_end[];
#if IS_BUILTIN(CONFIG_KUNIT)
-static void kunit_print_tap_header(void)
+static char *filter_glob;
+module_param(filter_glob, charp, 0);
+MODULE_PARM_DESC(filter_glob,
+ "Filter which KUnit test suites run at boot-time, e.g. list*");
+
+static struct kunit_suite * const *
+kunit_filter_subsuite(struct kunit_suite * const * const subsuite)
+{
+ int i, n = 0;
+ struct kunit_suite **filtered;
+
+ n = 0;
+ for (i = 0; subsuite[i] != NULL; ++i) {
+ if (glob_match(filter_glob, subsuite[i]->name))
+ ++n;
+ }
+
+ if (n == 0)
+ return NULL;
+
+ filtered = kmalloc_array(n + 1, sizeof(*filtered), GFP_KERNEL);
+ if (!filtered)
+ return NULL;
+
+ n = 0;
+ for (i = 0; subsuite[i] != NULL; ++i) {
+ if (glob_match(filter_glob, subsuite[i]->name))
+ filtered[n++] = subsuite[i];
+ }
+ filtered[n] = NULL;
+
+ return filtered;
+}
+
+struct suite_set {
+ struct kunit_suite * const * const *start;
+ struct kunit_suite * const * const *end;
+};
+
+static struct suite_set kunit_filter_suites(void)
+{
+ int i;
+ struct kunit_suite * const **copy, * const *filtered_subsuite;
+ struct suite_set filtered;
+
+ const size_t max = __kunit_suites_end - __kunit_suites_start;
+
+ if (!filter_glob) {
+ filtered.start = __kunit_suites_start;
+ filtered.end = __kunit_suites_end;
+ return filtered;
+ }
+
+ copy = kmalloc_array(max, sizeof(*filtered.start), GFP_KERNEL);
+ filtered.start = copy;
+ if (!copy) { /* won't be able to run anything, return an empty set */
+ filtered.end = copy;
+ return filtered;
+ }
+
+ for (i = 0; i < max; ++i) {
+ filtered_subsuite = kunit_filter_subsuite(__kunit_suites_start[i]);
+ if (filtered_subsuite)
+ *copy++ = filtered_subsuite;
+ }
+ filtered.end = copy;
+ return filtered;
+}
+
+static void kunit_print_tap_header(struct suite_set *suite_set)
{
struct kunit_suite * const * const *suites, * const *subsuite;
int num_of_suites = 0;
- for (suites = __kunit_suites_start;
- suites < __kunit_suites_end;
- suites++)
+ for (suites = suite_set->start; suites < suite_set->end; suites++)
for (subsuite = *suites; *subsuite != NULL; subsuite++)
num_of_suites++;
@@ -30,12 +99,18 @@ int kunit_run_all_tests(void)
{
struct kunit_suite * const * const *suites;
- kunit_print_tap_header();
+ struct suite_set suite_set = kunit_filter_suites();
+
+ kunit_print_tap_header(&suite_set);
+
+ for (suites = suite_set.start; suites < suite_set.end; suites++)
+ __kunit_test_suites_init(*suites);
- for (suites = __kunit_suites_start;
- suites < __kunit_suites_end;
- suites++)
- __kunit_test_suites_init(*suites);
+ if (filter_glob) { /* a copy was made of each array */
+ for (suites = suite_set.start; suites < suite_set.end; suites++)
+ kfree(*suites);
+ kfree(suite_set.start);
+ }
return 0;
}