diff options
| author | Mike Rapoport (Microsoft) <rppt@kernel.org> | 2026-05-11 19:28:33 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-06-21 11:37:29 -0700 |
| commit | db8cef5bac46cf70e7faefc2c6c58f8673dc8672 (patch) | |
| tree | 44571dd38cf23229a6f51c78db1283fd4a902971 /tools | |
| parent | 49a4e7186b08ff56884d8a1b439e60f514886834 (diff) | |
selftests/mm: uffd-stress: use hugetlb_save and alloc huge pages
uffd-stress skips HugeTLB tests if there are no free huge pages prepared
by a wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-50-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Tested-by: Luiz Capitulino <luizcap@redhat.com>
Tested-by: Sarthak Sharma <sarthak.sharma@arm.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: Mark Brown <broonie@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>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/mm/uffd-stress.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/tools/testing/selftests/mm/uffd-stress.c b/tools/testing/selftests/mm/uffd-stress.c index 7c719d789249..43cc79590136 100644 --- a/tools/testing/selftests/mm/uffd-stress.c +++ b/tools/testing/selftests/mm/uffd-stress.c @@ -480,9 +480,12 @@ int main(int argc, char **argv) * Ensure nr_parallel - 1 hugepages on top of that to account * for racy extra reservation of hugepages. */ - if (gopts->test_type == TEST_HUGETLB && - hugetlb_free_default_pages() < 2 * (bytes / gopts->page_size) + gopts->nr_parallel - 1) - ksft_exit_skip("Skipping userfaultfd... not enough hugepages\n"); + if (gopts->test_type == TEST_HUGETLB) { + unsigned long nr = 2 * (bytes / gopts->page_size) + gopts->nr_parallel - 1; + + if (!hugetlb_setup_default(nr)) + 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) { |