diff options
| author | Mike Rapoport (Microsoft) <rppt@kernel.org> | 2026-05-11 19:28:24 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-05-28 21:31:51 -0700 |
| commit | de987bdbd5451a2f581f7d21b09f5814353a0095 (patch) | |
| tree | 33c8bd32be8166ca1ddb7fa06466683d53e33574 /tools | |
| parent | 0a8cd962553b3241dd6aa7897a343b8749396321 (diff) | |
| download | linux-next-history-de987bdbd5451a2f581f7d21b09f5814353a0095.tar.gz | |
selftests/mm: hugetlb-mmap: add setup of HugeTLB pages
hugetlb-mmap test fails 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/20260511162840.375890-41-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Luiz Capitulino <luizcap@redhat.com>
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/hugetlb-mmap.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/tools/testing/selftests/mm/hugetlb-mmap.c b/tools/testing/selftests/mm/hugetlb-mmap.c index 395be5d0dc1a4..0f2aad1b7dbd6 100644 --- a/tools/testing/selftests/mm/hugetlb-mmap.c +++ b/tools/testing/selftests/mm/hugetlb-mmap.c @@ -105,28 +105,35 @@ int main(int argc, char **argv) { size_t hugepage_size; size_t length = LENGTH; - int shift = 0; + int shift = 0, nr; ksft_print_header(); - ksft_set_plan(2); if (argc > 1) length = atol(argv[1]) << 20; if (argc > 2) shift = atoi(argv[2]); + hugetlb_save_settings(); if (shift) { hugepage_size = (1UL << shift); ksft_print_msg("%lu kB hugepages\n", 1UL << (shift - 10)); } else { hugepage_size = default_huge_page_size(); + if (!hugepage_size) + ksft_exit_skip("Could not detect default hugetlb page size."); ksft_print_msg("Default size hugepages (%lu kB)\n", hugepage_size >> 10); } /* munmap will fail if the length is not page aligned */ - if (hugepage_size > length) - length = hugepage_size; + length = (length + hugepage_size - 1) & ~(hugepage_size - 1); + nr = length / hugepage_size; + + hugetlb_set_nr_pages(hugepage_size, nr); + if (hugetlb_free_pages(hugepage_size) < nr) + ksft_exit_skip("Not enough %lu Kb pages\n", hugepage_size >> 10); + ksft_set_plan(2); ksft_print_msg("Mapping %lu Mbytes\n", (unsigned long)length >> 20); test_anon_mmap(length, shift); |