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_param; 18 module_param_named(filter_glob, filter_glob_param, 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 const char *filter_glob) 28 { 29 int i, n = 0; 30 struct kunit_suite **filtered; 31 32 n = 0; 33 for (i = 0; subsuite[i] != NULL; ++i) { 34 if (glob_match(filter_glob, subsuite[i]->name)) 35 ++n; 36 } 37 38 if (n == 0) 39 return NULL; 40 41 filtered = kmalloc_array(n + 1, sizeof(*filtered), GFP_KERNEL); 42 if (!filtered) 43 return NULL; 44 45 n = 0; 46 for (i = 0; subsuite[i] != NULL; ++i) { 47 if (glob_match(filter_glob, subsuite[i]->name)) 48 filtered[n++] = subsuite[i]; 49 } 50 filtered[n] = NULL; 51 52 return filtered; 53 } 54 55 struct suite_set { 56 struct kunit_suite * const * const *start; 57 struct kunit_suite * const * const *end; 58 }; 59 60 static struct suite_set kunit_filter_suites(const struct suite_set *suite_set, 61 const char *filter_glob) 62 { 63 int i; 64 struct kunit_suite * const **copy, * const *filtered_subsuite; 65 struct suite_set filtered; 66 67 const size_t max = suite_set->end - suite_set->start; 68 69 copy = kmalloc_array(max, sizeof(*filtered.start), GFP_KERNEL); 70 filtered.start = copy; 71 if (!copy) { /* won't be able to run anything, return an empty set */ 72 filtered.end = copy; 73 return filtered; 74 } 75 76 for (i = 0; i < max; ++i) { 77 filtered_subsuite = kunit_filter_subsuite(suite_set->start[i], filter_glob); 78 if (filtered_subsuite) 79 *copy++ = filtered_subsuite; 80 } 81 filtered.end = copy; 82 return filtered; 83 } 84 85 static void kunit_handle_shutdown(void) 86 { 87 if (!kunit_shutdown) 88 return; 89 90 if (!strcmp(kunit_shutdown, "poweroff")) 91 kernel_power_off(); 92 else if (!strcmp(kunit_shutdown, "halt")) 93 kernel_halt(); 94 else if (!strcmp(kunit_shutdown, "reboot")) 95 kernel_restart(NULL); 96 97 } 98 99 static void kunit_print_tap_header(struct suite_set *suite_set) 100 { 101 struct kunit_suite * const * const *suites, * const *subsuite; 102 int num_of_suites = 0; 103 104 for (suites = suite_set->start; suites < suite_set->end; suites++) 105 for (subsuite = *suites; *subsuite != NULL; subsuite++) 106 num_of_suites++; 107 108 pr_info("TAP version 14\n"); 109 pr_info("1..%d\n", num_of_suites); 110 } 111 112 int kunit_run_all_tests(void) 113 { 114 struct kunit_suite * const * const *suites; 115 struct suite_set suite_set = { 116 .start = __kunit_suites_start, 117 .end = __kunit_suites_end, 118 }; 119 120 if (filter_glob_param) 121 suite_set = kunit_filter_suites(&suite_set, filter_glob_param); 122 123 kunit_print_tap_header(&suite_set); 124 125 for (suites = suite_set.start; suites < suite_set.end; suites++) 126 __kunit_test_suites_init(*suites); 127 128 if (filter_glob_param) { /* a copy was made of each array */ 129 for (suites = suite_set.start; suites < suite_set.end; suites++) 130 kfree(*suites); 131 kfree(suite_set.start); 132 } 133 134 kunit_handle_shutdown(); 135 136 return 0; 137 } 138 139 #if IS_BUILTIN(CONFIG_KUNIT_TEST) 140 #include "executor_test.c" 141 #endif 142 143 #endif /* IS_BUILTIN(CONFIG_KUNIT) */ 144