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selftests/mm: uffd-unit-tests: use kselftest framework

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Convert uffd-unit-tests to use kselftest framework for reporting and
tracking successful and failing runs.

Link: https://lore.kernel.org/20260511162840.375890-21-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Donet Tom <donettom@linux.ibm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Tested-by: Luiz Capitulino <luizcap@redhat.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Liam Howlett <liam@infradead.org>
Cc: Li Wang <li.wang@linux.dev>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Sarthak Sharma <sarthak.sharma@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Mike Rapoport (Microsoft) 2026-05-11 19:28:04 +03:00 committed by Andrew Morton
parent a7d3925151
commit 462de7f58c
1 changed files with 52 additions and 53 deletions
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105
tools/testing/selftests/mm/uffd-unit-tests.c
View File

@ -86,47 +86,28 @@ typedef struct {
uffd_test_case_ops_t *test_case_ops;
} uffd_test_case_t;
static void uffd_test_report(void)
{
printf("Userfaults unit tests: pass=%u, skip=%u, fail=%u (total=%u)\n",
ksft_get_pass_cnt(),
ksft_get_xskip_cnt(),
ksft_get_fail_cnt(),
ksft_test_num());
}
static char current_test[256];
static void uffd_test_pass(void)
{
printf("done\n");
ksft_inc_pass_cnt();
ksft_test_result_pass("%s\n", current_test);
}
#define uffd_test_start(...) do { \
printf("Testing "); \
printf(__VA_ARGS__); \
printf("... "); \
fflush(stdout); \
snprintf(current_test, sizeof(current_test), __VA_ARGS__); \
} while (0)
#define uffd_test_fail(...) do { \
printf("failed [reason: "); \
printf(__VA_ARGS__); \
printf("]\n"); \
ksft_inc_fail_cnt(); \
#define uffd_test_fail(fmt, ...) do { \
ksft_print_msg("failed reason: [" fmt "]\n", ##__VA_ARGS__); \
ksft_test_result_fail("%s\n", current_test); \
} while (0)
static void uffd_test_skip(const char *message)
{
printf("skipped [reason: %s]\n", message);
ksft_inc_xskip_cnt();
ksft_test_result_skip("%s (%s)\n", current_test, message);
}
/*
* Returns 1 if specific userfaultfd supported, 0 otherwise. Note, we'll
* return 1 even if some test failed as long as uffd supported, because in
* that case we still want to proceed with the rest uffd unit tests.
*/
static int test_uffd_api(bool use_dev)
static void test_uffd_api(bool use_dev)
{
struct uffdio_api uffdio_api;
int uffd;
@ -140,7 +121,7 @@ static int test_uffd_api(bool use_dev)
uffd = uffd_open_sys(UFFD_FLAGS);
if (uffd < 0) {
uffd_test_skip("cannot open userfaultfd handle");
return 0;
return;
}
/* Test wrong UFFD_API */
@ -177,8 +158,6 @@ static int test_uffd_api(bool use_dev)
uffd_test_pass();
out:
close(uffd);
/* We have a valid uffd handle */
return 1;
}
@ -1701,6 +1680,26 @@ static void usage(const char *prog)
exit(KSFT_FAIL);
}
static int uffd_count_tests(int n_tests, int n_mems, const char *test_filter)
{
uffd_test_case_t *test;
int i, j, count = 0;
if (!test_filter)
count += 2; /* test_uffd_api(false) + test_uffd_api(true) */
for (i = 0; i < n_tests; i++) {
test = &uffd_tests[i];
if (test_filter && !strstr(test->name, test_filter))
continue;
for (j = 0; j < n_mems; j++)
if (test->mem_targets & mem_types[j].mem_flag)
count++;
}
return count;
}
int main(int argc, char *argv[])
{
int n_tests = sizeof(uffd_tests) / sizeof(uffd_test_case_t);
@ -1711,8 +1710,7 @@ int main(int argc, char *argv[])
mem_type_t *mem_type;
uffd_test_args_t args;
const char *errmsg;
int has_uffd, opt;
int i, j;
int i, j, opt;
while ((opt = getopt(argc, argv, "f:hl")) != -1) {
switch (opt) {
@ -1730,24 +1728,28 @@ int main(int argc, char *argv[])
}
}
if (!test_filter && !list_only) {
has_uffd = test_uffd_api(false);
has_uffd |= test_uffd_api(true);
if (!has_uffd) {
printf("Userfaultfd not supported or unprivileged, skip all tests\n");
exit(KSFT_SKIP);
if (list_only) {
for (i = 0; i < n_tests; i++) {
test = &uffd_tests[i];
if (test_filter && !strstr(test->name, test_filter))
continue;
printf("%s\n", test->name);
}
return KSFT_PASS;
}
ksft_print_header();
ksft_set_plan(uffd_count_tests(n_tests, n_mems, test_filter));
if (!test_filter) {
test_uffd_api(false);
test_uffd_api(true);
}
for (i = 0; i < n_tests; i++) {
test = &uffd_tests[i];
if (test_filter && !strstr(test->name, test_filter))
continue;
if (list_only) {
printf("%s\n", test->name);
continue;
}
for (j = 0; j < n_mems; j++) {
mem_type = &mem_types[j];
@ -1758,6 +1760,10 @@ int main(int argc, char *argv[])
uffd_test_ops = mem_type->mem_ops;
uffd_test_case_ops = test->test_case_ops;
if (!(test->mem_targets & mem_type->mem_flag))
continue;
uffd_test_start("%s on %s", test->name, mem_type->name);
if (mem_type->mem_flag & (MEM_HUGETLB_PRIVATE | MEM_HUGETLB)) {
gopts.page_size = default_huge_page_size();
if (gopts.page_size == 0) {
@ -1777,10 +1783,6 @@ int main(int argc, char *argv[])
/* Initialize test arguments */
args.mem_type = mem_type;
if (!(test->mem_targets & mem_type->mem_flag))
continue;
uffd_test_start("%s on %s", test->name, mem_type->name);
if (!uffd_feature_supported(test)) {
uffd_test_skip("feature missing");
continue;
@ -1794,10 +1796,7 @@ int main(int argc, char *argv[])
}
}
if (!list_only)
uffd_test_report();
return ksft_get_fail_cnt() ? KSFT_FAIL : KSFT_PASS;
ksft_finished();
}
#else /* __NR_userfaultfd */
@ -1806,8 +1805,8 @@ int main(int argc, char *argv[])
int main(void)
{
printf("Skipping %s (missing __NR_userfaultfd)\n", __file__);
return KSFT_SKIP;
ksft_print_header();
ksft_exit_skip("missing __NR_userfaultfd definition\n");
}
#endif /* __NR_userfaultfd */