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b6d5799b0b
Add a new kernel command-line option, 'kunit_shutdown', which allows the user to specify that the kernel poweroff, halt, or reboot after completing all KUnit tests; this is very handy for running KUnit tests on UML or a VM so that the UML/VM process exits cleanly immediately after running all tests without needing a special initramfs. Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Brendan Higgins <brendanhiggins@google.com> Reviewed-by: Stephen Boyd <sboyd@kernel.org> Tested-By: Daniel Latypov <dlatypov@google.com> Reviewed-by: Daniel Latypov <dlatypov@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
139 lines
3.2 KiB
C
139 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/reboot.h>
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#include <kunit/test.h>
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#include <linux/glob.h>
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#include <linux/moduleparam.h>
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/*
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* These symbols point to the .kunit_test_suites section and are defined in
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* include/asm-generic/vmlinux.lds.h, and consequently must be extern.
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*/
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extern struct kunit_suite * const * const __kunit_suites_start[];
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extern struct kunit_suite * const * const __kunit_suites_end[];
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#if IS_BUILTIN(CONFIG_KUNIT)
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static char *filter_glob;
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module_param(filter_glob, charp, 0);
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MODULE_PARM_DESC(filter_glob,
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"Filter which KUnit test suites run at boot-time, e.g. list*");
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static char *kunit_shutdown;
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core_param(kunit_shutdown, kunit_shutdown, charp, 0644);
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static struct kunit_suite * const *
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kunit_filter_subsuite(struct kunit_suite * const * const subsuite)
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{
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int i, n = 0;
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struct kunit_suite **filtered;
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n = 0;
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for (i = 0; subsuite[i] != NULL; ++i) {
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if (glob_match(filter_glob, subsuite[i]->name))
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++n;
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}
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if (n == 0)
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return NULL;
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filtered = kmalloc_array(n + 1, sizeof(*filtered), GFP_KERNEL);
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if (!filtered)
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return NULL;
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n = 0;
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for (i = 0; subsuite[i] != NULL; ++i) {
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if (glob_match(filter_glob, subsuite[i]->name))
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filtered[n++] = subsuite[i];
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}
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filtered[n] = NULL;
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return filtered;
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}
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struct suite_set {
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struct kunit_suite * const * const *start;
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struct kunit_suite * const * const *end;
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};
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static struct suite_set kunit_filter_suites(void)
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{
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int i;
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struct kunit_suite * const **copy, * const *filtered_subsuite;
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struct suite_set filtered;
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const size_t max = __kunit_suites_end - __kunit_suites_start;
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if (!filter_glob) {
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filtered.start = __kunit_suites_start;
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filtered.end = __kunit_suites_end;
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return filtered;
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}
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copy = kmalloc_array(max, sizeof(*filtered.start), GFP_KERNEL);
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filtered.start = copy;
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if (!copy) { /* won't be able to run anything, return an empty set */
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filtered.end = copy;
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return filtered;
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}
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for (i = 0; i < max; ++i) {
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filtered_subsuite = kunit_filter_subsuite(__kunit_suites_start[i]);
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if (filtered_subsuite)
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*copy++ = filtered_subsuite;
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}
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filtered.end = copy;
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return filtered;
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}
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static void kunit_handle_shutdown(void)
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{
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if (!kunit_shutdown)
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return;
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if (!strcmp(kunit_shutdown, "poweroff"))
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kernel_power_off();
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else if (!strcmp(kunit_shutdown, "halt"))
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kernel_halt();
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else if (!strcmp(kunit_shutdown, "reboot"))
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kernel_restart(NULL);
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}
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static void kunit_print_tap_header(struct suite_set *suite_set)
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{
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struct kunit_suite * const * const *suites, * const *subsuite;
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int num_of_suites = 0;
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for (suites = suite_set->start; suites < suite_set->end; suites++)
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for (subsuite = *suites; *subsuite != NULL; subsuite++)
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num_of_suites++;
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pr_info("TAP version 14\n");
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pr_info("1..%d\n", num_of_suites);
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}
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int kunit_run_all_tests(void)
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{
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struct kunit_suite * const * const *suites;
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struct suite_set suite_set = kunit_filter_suites();
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kunit_print_tap_header(&suite_set);
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for (suites = suite_set.start; suites < suite_set.end; suites++)
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__kunit_test_suites_init(*suites);
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if (filter_glob) { /* a copy was made of each array */
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for (suites = suite_set.start; suites < suite_set.end; suites++)
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kfree(*suites);
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kfree(suite_set.start);
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}
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kunit_handle_shutdown();
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return 0;
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}
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#endif /* IS_BUILTIN(CONFIG_KUNIT) */
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