From 4352b8aee98005853aa63f57d6377282de17a33f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 23 Aug 2026 13:28:57 -0700 Subject: Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux Pull I3C updates from Alexandre Belloni: "A new driver this cycle, for the AMD AXI I3C controller. There are also new features such as IBI wakeup support, SETAASA device discovery and ACPI support for the the DAA methods, meaning we can now communicate with the SPD devices on DDR5 modules. New driver: - AMD AXI I3C master controller Subsystem: - I3C Common Command Code (CCC) handling improvements, especially around GET CCCs - SETAASA device discovery support - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as well as I2C devices on I3C bus - IBI-based wakeup support Drivers: - dw: SETAASA support - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C controller support, PIO queue management support for HCI v1.2 - renesas: improve suspend to RAM support, add runtime PM support" * tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits) i3c: dw: reduce do_daa time if there's no client i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2 i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode i3c: dw: rename "pclk" to "apb" to match dt-binding i3c: dw: make struct dw_i3c_cmd smaller i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding i3c: renesas: Don't register devices when ENTDAA times out i3c: master: dw-i3c-master: fix OD timing for first broadcast i3c: mipi-i3c-hci: Advertise IBI wakeup capability i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev() i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI i3c: master: Reject IBI requests from non-IBI-capable devices i3c: master: Add helper to query bus wakeup requirements i3c: master: Report wakeup events for IBIs i3c: master: Support IBI-based wakeup capability i3c: master: Fix potential UAF in i3c_device_match() i3c: master: Fix potential UAF in i3c_device_uevent() i3c: Make dev->desc locking assumptions explicit i3c: master: Fix use-after-free of master->this ... --- lib/kunit/executor.c | 442 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 442 insertions(+) create mode 100644 lib/kunit/executor.c (limited to 'lib/kunit/executor.c') diff --git a/lib/kunit/executor.c b/lib/kunit/executor.c new file mode 100644 index 000000000..b0f8a41d6 --- /dev/null +++ b/lib/kunit/executor.c @@ -0,0 +1,442 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include +#include +#include + +/* + * 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" + ": 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_ENABLED +static bool autorun_param = true; +#else +static bool autorun_param; +#endif +module_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" + ": 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_set +kunit_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) */ -- cgit v1.3.1