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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 38/53] selftests/mm: hugetlb-mmap: add setup of HugeTLB pages Date: Mon, 6 Apr 2026 17:17:20 +0300 Message-ID: <20260406141735.2179309-39-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: xjy3pxwrg8otz1mdumoe1ax8wbfot445 X-Rspamd-Queue-Id: 2E0411C0005 X-Rspamd-Server: rspam09 X-HE-Tag: 1775485287-165075 X-HE-Meta: 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 fY3ripoI 4rtf4rF5uN3giPrJd1vi5cQk8MpE29CWgso5yLntWlMPoZzE1LO710EBFc1yHFJ0CdBcIjtLuQNoARohxjzdwLnUmvEF1CQTnuze+x7pmDp5nzMfcACNqaXis6z37rpep1+2wUvXBgS+65MiIl7kcDP9GmLylp+lqcXqejlOmDR/H4JZ8kwuXk6dp0gGT9MvPQyE72c40yHWNaSh1Y+Rl6nFjuPx9ktu27Xxx0X+MjbGhBKU= 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 5be68fbc36dc..d4edb233101d 100644 --- a/tools/testing/selftests/mm/hugetlb-mmap.c +++ b/tools/testing/selftests/mm/hugetlb-mmap.c @@ -107,10 +107,9 @@ 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; @@ -126,9 +125,13 @@ 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