[PATCH i-g-t 2/2] lib/kunit: Execute test cases synchronously
Janusz Krzysztofik
janusz.krzysztofik at linux.intel.com
Fri Nov 3 18:19:42 UTC 2023
Up to now we've been loading a KUnit test module in background and parsing
in parallel its KTAP output with results from all the module's test cases.
However, recent KUnit implementation is capable of executing only those
test cases that match a user filter specified on test module load.
Stop loading the KUnit test module in background once per the whole
subtest. Instead, load the module on each dynamic sub-subtest execution
with a filter that selects a specific test case and wait for its
completion. If successful and no kernel taint then parse the whole KTAP
report it has produced and translate it to IGT result of the sub-subtest.
With that in place, we no longer need to skip the whole subtest on a
failure from module loading or KTAP reading or parsing. Since such event
is now local to execution of an individual test case, only fail its
corresponding dynamic sub-subtests and continue with subsequent ones.
However, still omit execution of subsequent test cases once the kernel
gets tainted.
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik at linux.intel.com>
---
lib/igt_kmod.c | 135 ++++++++++++-------------------------------------
1 file changed, 31 insertions(+), 104 deletions(-)
diff --git a/lib/igt_kmod.c b/lib/igt_kmod.c
index 37591b7389..5bd8f56088 100644
--- a/lib/igt_kmod.c
+++ b/lib/igt_kmod.c
@@ -960,6 +960,7 @@ static int kunit_kmsg_get_results(struct igt_list_head *results,
{
char *suite_name = NULL, *case_name = NULL;
struct igt_ktap_results *ktap;
+ unsigned long taints;
int flags, err;
if (igt_debug_on(tst->kmsg < 0))
@@ -998,6 +999,11 @@ static int kunit_kmsg_get_results(struct igt_list_head *results,
if (err)
goto out_kmod_unload;
+ if (igt_debug_on(igt_kernel_tainted(&taints))) {
+ err = -ENOTRECOVERABLE;
+ goto out_remove_module;
+ }
+
ktap = igt_ktap_alloc(results);
if (igt_debug_on(!ktap)) {
err = -ENOMEM;
@@ -1203,84 +1209,43 @@ static void __igt_kunit(struct igt_ktest *tst,
const char *opts,
struct igt_list_head *tests)
{
- struct modprobe_data modprobe = { tst->kmod, opts, 0, pthread_self(), };
- char *suite_name = NULL, *case_name = NULL;
- struct igt_ktap_result *t, *r = NULL;
- struct igt_ktap_results *ktap;
- pthread_mutexattr_t attr;
- IGT_LIST_HEAD(results);
- int ret = -EINPROGRESS;
- unsigned long taints;
-
- igt_skip_on(lseek(tst->kmsg, 0, SEEK_END) < 0);
-
- ktap = igt_ktap_alloc(&results);
- igt_require(ktap);
+ struct igt_ktap_result *t;
igt_list_for_each_entry(t, tests, link) {
+ char *suite_name = NULL, *case_name = NULL;
+ IGT_LIST_HEAD(results);
+ unsigned long taints;
+
igt_dynamic_f("%s%s%s",
strcmp(t->suite_name, name) ? t->suite_name : "",
strcmp(t->suite_name, name) ? "-" : "",
t->case_name) {
+ struct igt_ktap_result *r = NULL;
+ char filter[1024];
+ int expect = 2;
- if (!modprobe.thread) {
- igt_assert_eq(pthread_mutexattr_init(&attr), 0);
- igt_assert_eq(pthread_mutexattr_setrobust(&attr,
- PTHREAD_MUTEX_ROBUST),
- 0);
- igt_assert_eq(pthread_mutex_init(&modprobe.lock,
- &attr), 0);
-
- modprobe.err = pthread_create(&modprobe.thread,
- NULL,
- modprobe_task,
- &modprobe);
- igt_assert_eq(modprobe.err, 0);
-
- igt_assert(igt_list_empty(&results));
- igt_assert_eq(ret, -EINPROGRESS);
- ret = kunit_kmsg_result_get(&results, &modprobe,
- tst->kmsg, ktap);
- igt_fail_on(igt_list_empty(&results));
-
- r = igt_list_first_entry(&results, r, link);
- }
+ igt_skip_on(igt_kernel_tainted(&taints));
- while (igt_debug_on_f(strcmp(r->suite_name, t->suite_name),
- "suite_name expected: %s, got: %s\n",
- t->suite_name, r->suite_name) ||
- igt_debug_on_f(strcmp(r->case_name, t->case_name),
- "case_name expected: %s, got: %s\n",
- t->case_name, r->case_name) ||
- r->code == IGT_EXIT_INVALID) {
+ igt_assert_lt(snprintf(filter, sizeof(filter), "filter_glob=%s.%s",
+ t->suite_name, t->case_name), sizeof(filter));
+ igt_assert_eq(kunit_kmsg_get_results(&results, tst, filter, opts), 0);
- int code = r->code;
+ do {
+ igt_fail_on_f(!expect--, "Invalid result code\n");
kunit_result_free(&r, &suite_name, &case_name);
- if (igt_list_empty(&results)) {
- igt_assert_eq(ret, -EINPROGRESS);
- ret = kunit_kmsg_result_get(&results,
- &modprobe,
- tst->kmsg,
- ktap);
- igt_fail_on(igt_list_empty(&results));
- }
+ igt_fail_on(igt_list_empty(&results));
r = igt_list_first_entry(&results, r, link);
- if (code != IGT_EXIT_INVALID)
- continue;
-
- /* result from parametrized test case */
- igt_fail_on_f(strcmp(r->suite_name, suite_name),
+ igt_fail_on_f(strcmp(r->suite_name, t->suite_name),
"suite_name expected: %s, got: %s\n",
- suite_name, r->suite_name);
- igt_fail_on_f(strcmp(r->case_name, case_name),
+ t->suite_name, r->suite_name);
+ igt_fail_on_f(strcmp(r->case_name, t->case_name),
"case_name expected: %s, got: %s\n",
- case_name, r->case_name);
- }
+ t->case_name, r->case_name);
- igt_assert_neq(r->code, IGT_EXIT_INVALID);
+ } while (r->code == IGT_EXIT_INVALID);
if (r->msg && *r->msg) {
igt_skip_on_f(r->code == IGT_EXIT_SKIP,
@@ -1297,57 +1262,19 @@ static void __igt_kunit(struct igt_ktest *tst,
}
igt_assert_eq(r->code, IGT_EXIT_SUCCESS);
- switch (pthread_mutex_lock(&modprobe.lock)) {
- case 0:
- igt_debug_on(pthread_mutex_unlock(&modprobe.lock));
- break;
- case EOWNERDEAD:
- /* leave the mutex unrecoverable */
- igt_debug_on(pthread_mutex_unlock(&modprobe.lock));
- __attribute__ ((fallthrough));
- case ENOTRECOVERABLE:
- igt_assert_eq(modprobe.err, 0);
- break;
- default:
- igt_debug("pthread_mutex_lock() failed\n");
- break;
- }
-
igt_assert_eq(igt_kernel_tainted(&taints), 0);
}
- if (igt_debug_on(ret != -EINPROGRESS))
- break;
- }
+ kunit_results_free(&results, &suite_name, &case_name);
- kunit_results_free(&results, &suite_name, &case_name);
+ igt_debug_on(kmod_module_remove_module(tst->kmod, KMOD_REMOVE_FORCE));
+ igt_debug_on(igt_kmod_unload("kunit", KMOD_REMOVE_FORCE));
- if (modprobe.thread) {
- switch (pthread_mutex_lock(&modprobe.lock)) {
- case 0:
- igt_debug_on(pthread_cancel(modprobe.thread));
- igt_debug_on(pthread_mutex_unlock(&modprobe.lock));
- igt_debug_on(pthread_join(modprobe.thread, NULL));
- break;
- case EOWNERDEAD:
- /* leave the mutex unrecoverable */
- igt_debug_on(pthread_mutex_unlock(&modprobe.lock));
- break;
- case ENOTRECOVERABLE:
- break;
- default:
- igt_debug("pthread_mutex_lock() failed\n");
- igt_debug_on(pthread_join(modprobe.thread, NULL));
+ if (igt_debug_on(igt_kernel_tainted(&taints))) {
+ igt_info("Kernel tainted, not executing more selftests.\n");
break;
}
}
-
- igt_ktap_free(ktap);
-
- igt_skip_on(modprobe.err);
- igt_skip_on(igt_kernel_tainted(&taints));
- if (ret != -EINPROGRESS)
- igt_skip_on_f(ret, "KTAP parser failed\n");
}
/**
--
2.42.0
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