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Howlett" , Lance Yang , Li Wang , Leon Romanovsky , Lorenzo Stoakes , Luiz Capitulino , Mark Brown , Michal Hocko , Mike Rapoport , Nico Pache , Peter Xu , Ryan Roberts , Sarthak Sharma , Shuah Khan , Suren Baghdasaryan , Vlastimil Babka , Zi Yan , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v4 32/55] selftests/mm: cow: add setup of HugeTLB pages Date: Mon, 11 May 2026 19:28:16 +0300 Message-ID: <20260511162840.375890-33-rppt@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260511162840.375890-1-rppt@kernel.org> References: <20260511162840.375890-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: sofqjdqfk55c4jt15u41b6fog6s6tezq X-Rspam-User: X-Rspamd-Queue-Id: 272464000F X-Rspamd-Server: rspam07 X-HE-Tag: 1778517139-631814 X-HE-Meta: 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 f+mSrxE9 bfFj3PIuLtd1HHsgkr95UaqZuUhVs92ItCAFhE64H4Pc3G6ye1y8OZj4JRytl9Kllg/yCWn392lL28s0qVdYUGn1hDDYoDovIwXXuQyevKoyOtLvIJZWM+o67yuR2+UMCl4b5/DuHgK5YrABDlXn8nHvnSzY0p62kZL01a3woJFhRr8V5iQQLyJ41SV18lyTPbMDrz6EliaRiQiuMkUoG9sdYUDpAvUi7fwQnOfeVTgtdNHOn0ZONt51R2E/LXCVRg5lEtg1tOw29CK4PZupt1Kd4Aflh4LldRVpHgmF6Hrk18D3dhsZFIBBAHUnj/lhsxu7m Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: "Mike Rapoport (Microsoft)" cow tests 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. Tested-by: Luiz Capitulino Tested-by: Sarthak Sharma Signed-off-by: Mike Rapoport (Microsoft) --- tools/testing/selftests/mm/cow.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/mm/cow.c b/tools/testing/selftests/mm/cow.c index 5e571216b8d2..0c627ea89ff7 100644 --- a/tools/testing/selftests/mm/cow.c +++ b/tools/testing/selftests/mm/cow.c @@ -1881,21 +1881,21 @@ int main(int argc, char **argv) ksft_print_header(); + thp_save_settings(); + pagesize = getpagesize(); pmdsize = read_pmd_pagesize(); if (pmdsize) { /* Only if THP is supported. */ thp_read_settings(&default_settings); default_settings.hugepages[sz2ord(pmdsize, pagesize)].enabled = THP_INHERIT; - thp_save_settings(); thp_push_settings(&default_settings); ksft_print_msg("[INFO] detected PMD size: %zu KiB\n", pmdsize / 1024); nr_thpsizes = detect_thp_sizes(thpsizes, ARRAY_SIZE(thpsizes)); } - nr_hugetlbsizes = detect_hugetlb_page_sizes(hugetlbsizes, - ARRAY_SIZE(hugetlbsizes)); + nr_hugetlbsizes = hugetlb_setup(2, hugetlbsizes, ARRAY_SIZE(hugetlbsizes)); has_huge_zeropage = detect_huge_zeropage(); ksft_set_plan(ARRAY_SIZE(anon_test_cases) * tests_per_anon_test_case() + -- 2.53.0