// 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) */