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Howlett" , Lance Yang , Leon Romanovsky , Lorenzo Stoakes , 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 v2 38/53] selftests/mm: hugetlb-mmap: add setup of HugeTLB pages Date: Sat, 18 Apr 2026 13:55:23 +0300 Message-ID: <20260418105539.1261536-39-rppt@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260418105539.1261536-1-rppt@kernel.org> References: <20260418105539.1261536-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam10 X-Stat-Signature: rexzdz9yqprfhszfzfnxk461x78ugcqq X-Rspam-User: X-Rspamd-Queue-Id: 0E49C180011 X-HE-Tag: 1776509982-477688 X-HE-Meta: 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 jN8fo4Qx f9j+ZuP0ZJfK8E8XiWPsWEbrpqc/tj8EsZMk6a0MecYvrOVlqkcQoy8b1lMGup0wXoMvvq2KY4WnGmzZNLtYxV+VLhMNAEPQsNBNuWP8xUfUYajJ/iWeY3m+knKapS9YDNsHh0vH8RGQ6mhi+SgCyGDMD50OdL/JDkOyqwTRyzGUN+tWcR67PSLYUUT60dbgRTX/sff+9RPKCBtUujnyncUL0gJqyolJCx3wG7+a1h2YmLYY= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: "Mike Rapoport (Microsoft)" 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. Signed-off-by: Mike Rapoport (Microsoft) --- tools/testing/selftests/mm/hugetlb-mmap.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/mm/hugetlb-mmap.c b/tools/testing/selftests/mm/hugetlb-mmap.c index 3a7dd630f425..d629cf22bf5d 100644 --- a/tools/testing/selftests/mm/hugetlb-mmap.c +++ b/tools/testing/selftests/mm/hugetlb-mmap.c @@ -106,10 +106,9 @@ 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; @@ -125,9 +124,13 @@ int main(int argc, char **argv) } /* munmap with fail if the length is not page aligned */ - if (hugepage_size > length) - length = hugepage_size; + length = (length + hugepage_size) & ~(hugepage_size - 1); + nr = length / hugepage_size; + + if (!hugetlb_setup_default(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); -- 2.53.0