1 // SPDX-License-Identifier: GPL-2.0 2 3 #include <linux/reboot.h> 4 #include <kunit/test.h> 5 #include <linux/glob.h> 6 #include <linux/moduleparam.h> 7 8 /* 9 * These symbols point to the .kunit_test_suites section and are defined in 10 * include/asm-generic/vmlinux.lds.h, and consequently must be extern. 11 */ 12 extern struct kunit_suite * const * const __kunit_suites_start[]; 13 extern struct kunit_suite * const * const __kunit_suites_end[]; 14 15 #if IS_BUILTIN(CONFIG_KUNIT) 16 17 static char *filter_glob; 18 module_param(filter_glob, charp, 0); 19 MODULE_PARM_DESC(filter_glob, 20 "Filter which KUnit test suites run at boot-time, e.g. list*"); 21 22 static char *kunit_shutdown; 23 core_param(kunit_shutdown, kunit_shutdown, charp, 0644); 24 25 static struct kunit_suite * const * 26 kunit_filter_subsuite(struct kunit_suite * const * const subsuite) 27 { 28 int i, n = 0; 29 struct kunit_suite **filtered; 30 31 n = 0; 32 for (i = 0; subsuite[i] != NULL; ++i) { 33 if (glob_match(filter_glob, subsuite[i]->name)) 34 ++n; 35 } 36 37 if (n == 0) 38 return NULL; 39 40 filtered = kmalloc_array(n + 1, sizeof(*filtered), GFP_KERNEL); 41 if (!filtered) 42 return NULL; 43 44 n = 0; 45 for (i = 0; subsuite[i] != NULL; ++i) { 46 if (glob_match(filter_glob, subsuite[i]->name)) 47 filtered[n++] = subsuite[i]; 48 } 49 filtered[n] = NULL; 50 51 return filtered; 52 } 53 54 struct suite_set { 55 struct kunit_suite * const * const *start; 56 struct kunit_suite * const * const *end; 57 }; 58 59 static struct suite_set kunit_filter_suites(void) 60 { 61 int i; 62 struct kunit_suite * const **copy, * const *filtered_subsuite; 63 struct suite_set filtered; 64 65 const size_t max = __kunit_suites_end - __kunit_suites_start; 66 67 if (!filter_glob) { 68 filtered.start = __kunit_suites_start; 69 filtered.end = __kunit_suites_end; 70 return filtered; 71 } 72 73 copy = kmalloc_array(max, sizeof(*filtered.start), GFP_KERNEL); 74 filtered.start = copy; 75 if (!copy) { /* won't be able to run anything, return an empty set */ 76 filtered.end = copy; 77 return filtered; 78 } 79 80 for (i = 0; i < max; ++i) { 81 filtered_subsuite = kunit_filter_subsuite(__kunit_suites_start[i]); 82 if (filtered_subsuite) 83 *copy++ = filtered_subsuite; 84 } 85 filtered.end = copy; 86 return filtered; 87 } 88 89 static void kunit_handle_shutdown(void) 90 { 91 if (!kunit_shutdown) 92 return; 93 94 if (!strcmp(kunit_shutdown, "poweroff")) 95 kernel_power_off(); 96 else if (!strcmp(kunit_shutdown, "halt")) 97 kernel_halt(); 98 else if (!strcmp(kunit_shutdown, "reboot")) 99 kernel_restart(NULL); 100 101 } 102 103 static void kunit_print_tap_header(struct suite_set *suite_set) 104 { 105 struct kunit_suite * const * const *suites, * const *subsuite; 106 int num_of_suites = 0; 107 108 for (suites = suite_set->start; suites < suite_set->end; suites++) 109 for (subsuite = *suites; *subsuite != NULL; subsuite++) 110 num_of_suites++; 111 112 pr_info("TAP version 14\n"); 113 pr_info("1..%d\n", num_of_suites); 114 } 115 116 int kunit_run_all_tests(void) 117 { 118 struct kunit_suite * const * const *suites; 119 120 struct suite_set suite_set = kunit_filter_suites(); 121 122 kunit_print_tap_header(&suite_set); 123 124 for (suites = suite_set.start; suites < suite_set.end; suites++) 125 __kunit_test_suites_init(*suites); 126 127 if (filter_glob) { /* a copy was made of each array */ 128 for (suites = suite_set.start; suites < suite_set.end; suites++) 129 kfree(*suites); 130 kfree(suite_set.start); 131 } 132 133 kunit_handle_shutdown(); 134 135 return 0; 136 } 137 138 #endif /* IS_BUILTIN(CONFIG_KUNIT) */ 139