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Howlett" , Lance Yang , Leon Romanovsky , Lorenzo Stoakes , Mark Brown , Michal Hocko , Mike Rapoport , Nico Pache , Peter Xu , Ryan Roberts , Shuah Khan , Suren Baghdasaryan , Vlastimil Babka , Zi Yan , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 30/53] selftests/mm: cow: add setup of HugeTLB pages Date: Mon, 6 Apr 2026 17:17:12 +0300 Message-ID: <20260406141735.2179309-31-rppt@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260406141735.2179309-1-rppt@kernel.org> References: <20260406141735.2179309-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Stat-Signature: f1q48ww39qqd63cph8aunrfgtmeof7ou X-Rspamd-Queue-Id: 0BA361C0004 X-Rspamd-Server: rspam09 X-HE-Tag: 1775485240-513626 X-HE-Meta: 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 L/b4cQpQ OCFdX4KCowoC7RVH30Dv6oQFln64WVsc6oYaB7q95URpihp59jKTHlljU8JeRkbtLd8d7/P8INJ7pHV8clQUGFwL9iNHnYNousSqCSxYVJ6EFWEeTtFw2G7bL3WeoyR196QHHBDfLtjdzKGgOjRO8jMGVHbmrLxAqBZYeHonbrIcvE8KL44H87nDJPC9LBz7Z4S0lix7KAVK6lXWFI7tKedlBfXOjfcdTyHLlZU/W20Q3bRc= 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. 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 4321f4208fe3..1df513bf362d 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(); + hugepage_save_settings(true, true); + 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