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5d31f71efc
E.g. specifying this would run suites with "list" in their name. kunit.filter_glob=list* Note: the executor prints out a TAP header that includes the number of suites we intend to run. So unless we want to report empty results for filtered-out suites, we need to do the filtering here in the executor. It's also probably better in the executor since we most likely don't want any filtering to apply to tests built as modules. This code does add a CONFIG_GLOB=y dependency for CONFIG_KUNIT=y. But the code seems light enough that it shouldn't be an issue. For now, we only filter on suite names so we don't have to create copies of the suites themselves, just the array (of arrays) holding them. The name is rather generic since in the future, we could consider extending it to a syntax like: kunit.filter_glob=<suite_glob>.<test_glob> E.g. to run all the del list tests kunit.filter_glob=list-kunit-test.*del* But at the moment, it's far easier to manually comment out test cases in test files as opposed to messing with sets of Kconfig entries to select specific suites. So even just doing this makes using kunit far less annoying. Signed-off-by: Daniel Latypov <dlatypov@google.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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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 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_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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return 0;
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}
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#endif /* IS_BUILTIN(CONFIG_KUNIT) */
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