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selftests/mm: uffd-stress: use kselftest framework

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Convert uffd-stress test to use kselftest framework for reporting and
tracking successful and failing runs.

Link: https://lore.kernel.org/20260511162840.375890-20-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Tested-by: Sarthak Sharma <sarthak.sharma@arm.com>
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: Donet Tom <donettom@linux.ibm.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: 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 19:28:03 +03:00 committed by Andrew Morton
parent 4cf3a2657b
commit a7d3925151
1 changed files with 19 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
tools/testing/selftests/mm/uffd-stress.c
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@ -286,18 +286,12 @@ static int userfaultfd_stress(uffd_global_test_opts_t *gopts)
pthread_attr_setstacksize(&attr, 16*1024*1024);
while (bounces--) {
printf("bounces: %d, mode:", bounces);
if (bounces & BOUNCE_RANDOM)
printf(" rnd");
if (bounces & BOUNCE_RACINGFAULTS)
printf(" racing");
if (bounces & BOUNCE_VERIFY)
printf(" ver");
if (bounces & BOUNCE_POLL)
printf(" poll");
else
printf(" read");
printf(", ");
ksft_print_msg("bounces: %d, mode:%s%s%s%s, ",
bounces,
bounces & BOUNCE_RANDOM ? " rnd" : "",
bounces & BOUNCE_RACINGFAULTS ? " racing" : "",
bounces & BOUNCE_VERIFY ? " ver" : "",
bounces & BOUNCE_POLL ? " poll" : " read");
fflush(stdout);
if (bounces & BOUNCE_POLL)
@ -461,6 +455,9 @@ int main(int argc, char **argv)
if (argc < 4)
usage();
ksft_print_header();
ksft_set_plan(1);
if (signal(SIGALRM, sigalrm) == SIG_ERR)
err("failed to arm SIGALRM");
alarm(ALARM_INTERVAL_SECS);
@ -484,10 +481,8 @@ int main(int argc, char **argv)
* for racy extra reservation of hugepages.
*/
if (gopts->test_type == TEST_HUGETLB &&
get_free_hugepages() < 2 * (bytes / gopts->page_size) + gopts->nr_parallel - 1) {
printf("skip: Skipping userfaultfd... not enough hugepages\n");
return KSFT_SKIP;
}
get_free_hugepages() < 2 * (bytes / gopts->page_size) + gopts->nr_parallel - 1)
ksft_exit_skip("Skipping userfaultfd... not enough hugepages\n");
gopts->nr_pages_per_cpu = bytes / gopts->page_size / gopts->nr_parallel;
if (!gopts->nr_pages_per_cpu) {
@ -503,9 +498,12 @@ int main(int argc, char **argv)
}
gopts->nr_pages = gopts->nr_pages_per_cpu * gopts->nr_parallel;
printf("nr_pages: %lu, nr_pages_per_cpu: %lu\n",
gopts->nr_pages, gopts->nr_pages_per_cpu);
return userfaultfd_stress(gopts);
ksft_print_msg("nr_pages: %lu, nr_pages_per_cpu: %lu\n",
gopts->nr_pages, gopts->nr_pages_per_cpu);
ksft_test_result(!userfaultfd_stress(gopts),
"uffd-stress %s\n", argv[1]);
ksft_finished();
}
#else /* __NR_userfaultfd */
@ -514,8 +512,8 @@ int main(int argc, char **argv)
int main(void)
{
printf("skip: Skipping userfaultfd test (missing __NR_userfaultfd)\n");
return KSFT_SKIP;
ksft_print_header();
ksft_exit_skip("missing __NR_userfaultfd definition\n");
}
#endif /* __NR_userfaultfd */