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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#include <linux/reboot.h>#include <kunit/test.h>#include <kunit/attributes.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 __kunit_suites_start[];extern struct kunit_suite * const __kunit_suites_end[];extern struct kunit_suite * const __kunit_init_suites_start[];extern struct kunit_suite * const __kunit_init_suites_end[];
static struct kunit_suite_set kunit_boot_suites;
void kunit_free_boot_suites(void){ if (kunit_boot_suites.start) { kunit_free_suite_set(kunit_boot_suites); kunit_boot_suites = (struct kunit_suite_set){ NULL, NULL }; }}
static char *action_param;
module_param_named(action, action_param, charp, 0400);MODULE_PARM_DESC(action, "Changes KUnit executor behavior, valid values are:\n" "<none>: run the tests like normal\n" "'list' to list test names instead of running them.\n" "'list_attr' to list test names and attributes instead of running them.\n");
const char *kunit_action(void){ return action_param;}
/* * Run KUnit tests after initialization */#ifdef CONFIG_KUNIT_AUTORUN_ENABLEDstatic bool autorun_param = true;#elsestatic bool autorun_param;#endifmodule_param_named(autorun, autorun_param, bool, 0);MODULE_PARM_DESC(autorun, "Run KUnit tests after initialization");
bool kunit_autorun(void){ return autorun_param;}
#define PARAM_FROM_CONFIG(config) (config[0] ? config : NULL)
static char *filter_glob_param = PARAM_FROM_CONFIG(CONFIG_KUNIT_DEFAULT_FILTER_GLOB);static char *filter_param = PARAM_FROM_CONFIG(CONFIG_KUNIT_DEFAULT_FILTER);static char *filter_action_param = PARAM_FROM_CONFIG(CONFIG_KUNIT_DEFAULT_FILTER_ACTION);
module_param_named(filter_glob, filter_glob_param, charp, 0600);MODULE_PARM_DESC(filter_glob, "Filter which KUnit test suites/tests run at boot-time, e.g. list* or list*.*del_test");module_param_named(filter, filter_param, charp, 0600);MODULE_PARM_DESC(filter, "Filter which KUnit test suites/tests run at boot-time using attributes, e.g. speed>slow");module_param_named(filter_action, filter_action_param, charp, 0600);MODULE_PARM_DESC(filter_action, "Changes behavior of filtered tests using attributes, valid values are:\n" "<none>: do not run filtered tests as normal\n" "'skip': skip all filtered tests instead so tests will appear in output\n");
const char *kunit_filter_glob(void){ return filter_glob_param;}
char *kunit_filter(void){ return filter_param;}
char *kunit_filter_action(void){ return filter_action_param;}
/* glob_match() needs NULL terminated strings, so we need a copy of filter_glob_param. */struct kunit_glob_filter { char *suite_glob; char *test_glob;};
/* Split "suite_glob.test_glob" into two. Assumes filter_glob is not empty. */static int kunit_parse_glob_filter(struct kunit_glob_filter *parsed, const char *filter_glob){ const char *period = strchr(filter_glob, '.');
if (!period) { parsed->suite_glob = kstrdup(filter_glob, GFP_KERNEL); if (!parsed->suite_glob) return -ENOMEM; parsed->test_glob = NULL; return 0; }
parsed->suite_glob = kstrndup(filter_glob, period - filter_glob, GFP_KERNEL); if (!parsed->suite_glob) return -ENOMEM;
parsed->test_glob = kstrdup(period + 1, GFP_KERNEL); if (!parsed->test_glob) { kfree(parsed->suite_glob); return -ENOMEM; }
return 0;}
/* Create a copy of suite with only tests that match test_glob. */static struct kunit_suite *kunit_filter_glob_tests(const struct kunit_suite *const suite, const char *test_glob){ int n = 0; struct kunit_case *filtered, *test_case; struct kunit_suite *copy;
kunit_suite_for_each_test_case(suite, test_case) { if (!test_glob || glob_match(test_glob, test_case->name)) ++n; }
if (n == 0) return NULL;
copy = kmemdup(suite, sizeof(*copy), GFP_KERNEL); if (!copy) return ERR_PTR(-ENOMEM);
filtered = kzalloc_objs(*filtered, n + 1); if (!filtered) { kfree(copy); return ERR_PTR(-ENOMEM); }
n = 0; kunit_suite_for_each_test_case(suite, test_case) { if (!test_glob || glob_match(test_glob, test_case->name)) filtered[n++] = *test_case; }
copy->test_cases = filtered; return copy;}
void kunit_free_suite_set(struct kunit_suite_set suite_set){ struct kunit_suite * const *suites;
for (suites = suite_set.start; suites < suite_set.end; suites++) { kfree((*suites)->test_cases); kfree(*suites); } kfree(suite_set.start);}
/* * Filter and reallocate test suites. Must return the filtered test suites set * allocated at a valid virtual address or NULL in case of error. */struct kunit_suite_setkunit_filter_suites(const struct kunit_suite_set *suite_set, const char *filter_glob, char *filters, char *filter_action, int *err){ int i, j, k; int filter_count = 0; struct kunit_suite **copy, **copy_start, *filtered_suite, *new_filtered_suite; struct kunit_suite_set filtered = {NULL, NULL}; struct kunit_glob_filter parsed_glob; struct kunit_attr_filter *parsed_filters = NULL; struct kunit_suite * const *suites;
const size_t max = suite_set->end - suite_set->start;
copy = kzalloc_objs(*copy, max); if (!copy) { /* won't be able to run anything, return an empty set */ return filtered; } copy_start = copy;
if (filter_glob) { *err = kunit_parse_glob_filter(&parsed_glob, filter_glob); if (*err) goto free_copy; }
/* Parse attribute filters */ if (filters) { filter_count = kunit_get_filter_count(filters); parsed_filters = kzalloc_objs(*parsed_filters, filter_count); if (!parsed_filters) { *err = -ENOMEM; goto free_parsed_glob; } for (j = 0; j < filter_count; j++) parsed_filters[j] = kunit_next_attr_filter(&filters, err); if (*err) goto free_parsed_filters; }
for (i = 0; &suite_set->start[i] != suite_set->end; i++) { filtered_suite = suite_set->start[i]; if (filter_glob) { if (!glob_match(parsed_glob.suite_glob, filtered_suite->name)) continue; filtered_suite = kunit_filter_glob_tests(filtered_suite, parsed_glob.test_glob); if (IS_ERR(filtered_suite)) { *err = PTR_ERR(filtered_suite); goto free_filtered_suite; } } if (filter_count > 0 && parsed_filters != NULL) { for (k = 0; k < filter_count; k++) { new_filtered_suite = kunit_filter_attr_tests(filtered_suite, parsed_filters[k], filter_action, err);
/* Free previous copy of suite */ if (k > 0 || filter_glob) { kfree(filtered_suite->test_cases); kfree(filtered_suite); }
filtered_suite = new_filtered_suite;
if (*err) goto free_filtered_suite;
if (IS_ERR(filtered_suite)) { *err = PTR_ERR(filtered_suite); goto free_filtered_suite; } if (!filtered_suite) break; } }
if (!filtered_suite) continue;
*copy++ = filtered_suite; } filtered.start = copy_start; filtered.end = copy;
free_filtered_suite: if (*err) { for (suites = copy_start; suites < copy; suites++) { kfree((*suites)->test_cases); kfree(*suites); } }
free_parsed_filters: if (filter_count) kfree(parsed_filters);
free_parsed_glob: if (filter_glob) { kfree(parsed_glob.suite_glob); kfree(parsed_glob.test_glob); }
free_copy: if (*err) kfree(copy_start);
return filtered;}
void kunit_exec_run_tests(struct kunit_suite_set *suite_set, bool builtin){ size_t num_suites = suite_set->end - suite_set->start; bool autorun = kunit_autorun();
if (autorun && (builtin || num_suites)) { pr_info("KTAP version 1\n"); pr_info("1..%zu\n", num_suites); }
__kunit_test_suites_init(suite_set->start, num_suites, autorun);}
void kunit_exec_list_tests(struct kunit_suite_set *suite_set, bool include_attr){ struct kunit_suite * const *suites; struct kunit_case *test_case;
/* Hack: print a ktap header so kunit.py can find the start of KUnit output. */ pr_info("KTAP version 1\n");
for (suites = suite_set->start; suites < suite_set->end; suites++) { /* Print suite name and suite attributes */ pr_info("%s\n", (*suites)->name); if (include_attr) kunit_print_attr((void *)(*suites), false, 0);
/* Print test case name and attributes in suite */ kunit_suite_for_each_test_case((*suites), test_case) { pr_info("%s.%s\n", (*suites)->name, test_case->name); if (include_attr) kunit_print_attr((void *)test_case, true, 0); } }}
struct kunit_suite_set kunit_merge_suite_sets(struct kunit_suite_set init_suite_set, struct kunit_suite_set suite_set){ struct kunit_suite_set total_suite_set = {NULL, NULL}; struct kunit_suite **total_suite_start = NULL; size_t init_num_suites, num_suites, suite_size; int i = 0;
init_num_suites = init_suite_set.end - init_suite_set.start; num_suites = suite_set.end - suite_set.start; suite_size = sizeof(suite_set.start);
/* Allocate memory for array of all kunit suites */ total_suite_start = kmalloc_array(init_num_suites + num_suites, suite_size, GFP_KERNEL); if (!total_suite_start) return total_suite_set;
/* Append and mark init suites and then append all other kunit suites */ memcpy(total_suite_start, init_suite_set.start, init_num_suites * suite_size); for (i = 0; i < init_num_suites; i++) total_suite_start[i]->is_init = true;
memcpy(total_suite_start + init_num_suites, suite_set.start, num_suites * suite_size);
/* Set kunit suite set start and end */ total_suite_set.start = total_suite_start; total_suite_set.end = total_suite_start + (init_num_suites + num_suites);
return total_suite_set;}
#if IS_BUILTIN(CONFIG_KUNIT)
static char *kunit_shutdown;core_param(kunit_shutdown, kunit_shutdown, charp, 0644);
static void kunit_handle_shutdown(void){ if (!kunit_shutdown) return;
if (!strcmp(kunit_shutdown, "poweroff")) kernel_power_off(); else if (!strcmp(kunit_shutdown, "halt")) kernel_halt(); else if (!strcmp(kunit_shutdown, "reboot")) kernel_restart(NULL);
}
int kunit_run_all_tests(void){ struct kunit_suite_set suite_set = {NULL, NULL}; struct kunit_suite_set filtered_suite_set = {NULL, NULL}; struct kunit_suite_set init_suite_set = { __kunit_init_suites_start, __kunit_init_suites_end, }; struct kunit_suite_set normal_suite_set = { __kunit_suites_start, __kunit_suites_end, }; size_t init_num_suites = init_suite_set.end - init_suite_set.start; int err = 0;
if (init_num_suites > 0) { suite_set = kunit_merge_suite_sets(init_suite_set, normal_suite_set); if (!suite_set.start) goto out; } else suite_set = normal_suite_set;
if (!kunit_enabled()) { pr_info("kunit: disabled\n"); goto free_out; }
if (filter_glob_param || filter_param) { filtered_suite_set = kunit_filter_suites(&suite_set, filter_glob_param, filter_param, filter_action_param, &err);
/* Free original suite set before using filtered suite set */ if (init_num_suites > 0) kfree(suite_set.start); suite_set = filtered_suite_set;
if (err) { pr_err("kunit executor: error filtering suites: %d\n", err); goto free_out; } }
if (!action_param) kunit_exec_run_tests(&suite_set, true); else if (strcmp(action_param, "list") == 0) kunit_exec_list_tests(&suite_set, false); else if (strcmp(action_param, "list_attr") == 0) kunit_exec_list_tests(&suite_set, true); else pr_err("kunit executor: unknown action '%s'\n", action_param);
free_out: if (filter_glob_param || filter_param) { if (err) kunit_free_suite_set(suite_set); else kunit_boot_suites = suite_set; } else if (init_num_suites > 0) /* Don't use kunit_free_suite_set because suites aren't individually allocated */ kfree(suite_set.start);
out: kunit_handle_shutdown(); return err;}
#if IS_BUILTIN(CONFIG_KUNIT_TEST)#include "executor_test.c"#endif
#endif /* IS_BUILTIN(CONFIG_KUNIT) */