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// 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
* include/asm-generic/vmlinux.lds.h, and consequently must be extern.
*/
extern struct kunit_suite * const * const __kunit_suites_start[];
extern struct kunit_suite * const * const __kunit_suites_end[];
#if IS_BUILTIN(CONFIG_KUNIT)
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 = suite_set->start; suites < suite_set->end; suites++)
for (subsuite = *suites; *subsuite != NULL; subsuite++)
num_of_suites++;
pr_info("TAP version 14\n");
pr_info("1..%d\n", num_of_suites);
}
int kunit_run_all_tests(void)
{
struct kunit_suite * const * const *suites;
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);
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;
}
#endif /* IS_BUILTIN(CONFIG_KUNIT) */
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