From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D5317258EC1; Sat, 18 Apr 2026 10:55:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776509748; cv=none; b=aDWWLzv3mCc6iuJuEwOsKuJWihv3bAMKKljIw5XS+OVBV7eq6iTygvjUzJNJA4Zy2DedzloOuf3Cw2x4m9DysA165xa0rWjfWvwRprWkXVEhWGJbaOCHck6yrudQwCVoQ7jJr/+APToxarPy9UNmtBKFkeOqYDLFnIa55Z4bA8o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776509748; c=relaxed/simple; bh=jrUv75r0z4SPERcrtX0eA/LM+gbhyzEiQNjQWukcbRQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=E4IC1eukkvl81Jxfwo1e1sYmQquxvI6Ma83Hqy171axwr0g7pimW95hT80e2JhrTlDf9eWbYq4hmiLv0csW19/s03eBPxYAtQZ4qX4TL12Tu2NshxqeWH8HPdF9MH3reawvo6gbD7b7N6i5G6PUzZfl2MK2nHk/IX2Du7yBObQ0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=sYtsBjVw; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="sYtsBjVw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C594FC19424; Sat, 18 Apr 2026 10:55:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776509748; bh=jrUv75r0z4SPERcrtX0eA/LM+gbhyzEiQNjQWukcbRQ=; h=From:To:Cc:Subject:Date:From; b=sYtsBjVw7ththwKj1VCTW3JjuBRgRn6oS3EzStEot3vXdc45kVIXP05d01E2tHxQQ 28kBM8LSTugZXQeIqM5vFvRZrWnZQA1Tn9EMdGJKOLNb8x3jw7khNEkQ4tLt6fSHG9 d3uuUMO4rT8vdrPCMX4NEuubikxI7nwHWNNW+wV4Lif9SnThm3j7CnB7raALBXf1kr //h3yG1TJanoK1im7QF1VrHuTTn9APlS3q42CoUV4AMBgET28FI0j39nodj7tAfE4B z78w0qtl5al4HJzxYnCDwdxJQfuaVD7YMQGfyk+j2suAXrDfPxB0hBsw+n/ggugPHZ zGx8Jj5gXrw3Q== From: Mike Rapoport To: Andrew Morton , David Hildenbrand Cc: Baolin Wang , Barry Song , Dev Jain , Donet Tom , Jason Gunthorpe , John Hubbard , "Liam R. 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 00/53] make MM selftests more CI friendly Date: Sat, 18 Apr 2026 13:54:45 +0300 Message-ID: <20260418105539.1261536-1-rppt@kernel.org> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: "Mike Rapoport (Microsoft)" Hi, There's a lot of dancing around HugeTLB settings in run_vmtests.sh. Some test need just a few default huge pages, some require at least 256 MB, and some just skip lots of tests if huge pages of all supported sizes are not available. The goal of this set is to make tests deal with HugeTLB setup and teardown. There are already convenient helpers that allow easy reading and writing of /proc and /sysfs, so adding a few APIs that will detect and update HugeTLB settings shouldn't be a big deal. But these nice helpers use kselftest framework, and many of HugeTLB (and even THP) test don't, so as a result this patchset also includes a lot of churn for conversion of those tests to kselftest framework (patches 7-19). The series break out: patches 1-4: small fixes patches 7-19: mechanical conversion to kselftest framework patches 20-26: extension of thp_settings to hugepage_settings to also include HugeTLB helpers patches 27-28: add helpers for setting up SHM limits in hugetlb-shm and thuge-gen tests patches 29-51: integrate the new APIs in all the tests that use HugeTLB patches 52-53: drop HugeTLB setup from run_vmtests.sh I belive at this point this can go to mm-new and wait there for more review feedback. Based on mm-stable-2026-04-18-02-14 v2 changes: * fix hugetlb mmap tests to actually test file mappings * increase maximal tests number in khugepaged * add tags, thanks everyone! v1: https://lore.kernel.org/all/20260406141735.2179309-1-rppt@kernel.org Mike Rapoport (Microsoft) (53): selftests/mm: hugetlb-read-hwpoison: add SIGBUS handler selftests/mm: khugepaged: enable collapse_single_pte_entry_compound for shmem selftests/mm: migration: don't assume hupe page is TWOMEG selftests/mm: run_vmtests.sh: don't gate THP and KSM tests on HAVE_HUGEPAGES selftests/mm: merge map_hugetlb into hugepage-mmap selftests/mm: rename hugepage-* tests to hugetlb-* selftests/mm: hugetlb-shm: use kselftest framework selftests/mm: hugetlb-vmemmap: use kselftest framework selftests/mm: hugetlb-madvise: use kselftest framework selftests/mm: hugetlb_madv_vs_map: use kselftest framework selftests/mm: hugetlb-read-hwpoison: use kselftest framework selftests/mm: khugepaged: group tests in an array selftests/mm: khugepaged: use ksefltest framework selftests/mm: ksm_tests: use kselftest framework selftests/mm: protection_keys: use descriptive test names in TAP output selftests/mm: protection_keys: use kselftest framework selftests/mm: uffd-stress: use kselftest framework selftests/mm: uffd-unit-tests: use kselftest framework selftests/mm: va_high_addr_switch: use kselftest framework selftests/mm: add atexit() and signal handlers to thp_settings selftests/mm: rename thp_settings.[ch] to hugepage_settings.[ch] selftests/mm: move HugeTLB helpers to hugepage_settings selftests/mm: hugepage_settings: use unsigned long in detect_hugetlb_page_size selftests/mm: hugepage_settings: add APIs to get and set nr_hugepages selftests/mm: hugepage_settings: rename get_free_hugepages() selftests/mm: hugepage_settings: add APIs for HugeTLB setup and teardown selftests/mm: move read_file(), read_num() and write_num() to vm_util selftests/mm: vm_util: add helpers to set and restore shm limits selftests/mm: compaction_test: use HugeTLB helpers ... selftests/mm: cow: add setup of HugeTLB pages selftests/mm: gup_longterm: add setup of HugeTLB pages selftests/mm: gup_test: add setup of HugeTLB pages selftests/mm: hmm-tests: add setup of HugeTLB pages selftests/mm: hugepage_dio: add setup of HugeTLB pages selftests/mm: hugetlb_fault_after_madv: add setup of HugeTLB pages selftests/mm: hugetlb-madvise: add setup of HugeTLB pages selftests/mm: hugetlb_madv_vs_map: add setup of HugeTLB pages selftests/mm: hugetlb-mmap: add setup of HugeTLB pages selftests/mm: hugetlb-mremap: add setup of HugeTLB pages selftests/mm: hugetlb-shm: add setup of HugeTLB pages selftests/mm: hugetlb-soft-online: add setup of HugeTLB pages selftests/mm: hugetlb-vmemmap: add setup of HugeTLB pages selftests/mm: migration: add setup of HugeTLB pages selftests/mm: pagemap_ioctl: add setup of HugeTLB pages selftests/mm: protection_keys: use library code for HugeTLB setup selftests/mm: thuge-gen: add setup of HugeTLB pages selftests/mm: uffd-stress: use hugetlb_save and alloc huge pages selftests/mm: uffd-unit-tests: add setup of HugeTLB pages selftests/mm: uffd-wp-mremap: add setup of HugeTLB pages selftests/mm: va_high_addr_switch: add setup of HugeTLB pages selftests/mm: va_high_addr_switch.sh: drop huge pages setup selftests/mm: run_vmtests.sh: free memory if available memory is low selftests/mm: run_vmtests.sh: drop detection and setup of HugeTLB tools/testing/selftests/mm/.gitignore | 4 + tools/testing/selftests/mm/Makefile | 13 +- tools/testing/selftests/mm/compaction_test.c | 113 +---- tools/testing/selftests/mm/cow.c | 29 +- .../selftests/mm/folio_split_race_test.c | 2 +- tools/testing/selftests/mm/guard-regions.c | 2 +- tools/testing/selftests/mm/gup_longterm.c | 3 +- tools/testing/selftests/mm/gup_test.c | 12 + tools/testing/selftests/mm/hmm-tests.c | 24 +- tools/testing/selftests/mm/hugepage-mmap.c | 78 ---- .../{thp_settings.c => hugepage_settings.c} | 284 +++++++++++-- .../{thp_settings.h => hugepage_settings.h} | 75 +++- tools/testing/selftests/mm/hugetlb-madvise.c | 209 ++++------ tools/testing/selftests/mm/hugetlb-mmap.c | 140 +++++++ .../{hugepage-mremap.c => hugetlb-mremap.c} | 13 +- .../selftests/mm/hugetlb-read-hwpoison.c | 123 +++--- .../mm/{hugepage-shm.c => hugetlb-shm.c} | 65 ++- .../selftests/mm/hugetlb-soft-offline.c | 45 +- .../{hugepage-vmemmap.c => hugetlb-vmemmap.c} | 46 +- tools/testing/selftests/mm/hugetlb_dio.c | 15 +- .../selftests/mm/hugetlb_fault_after_madv.c | 7 +- .../selftests/mm/hugetlb_madv_vs_map.c | 22 +- tools/testing/selftests/mm/khugepaged.c | 394 ++++++++---------- tools/testing/selftests/mm/ksm_tests.c | 182 ++++---- tools/testing/selftests/mm/map_hugetlb.c | 88 ---- tools/testing/selftests/mm/migration.c | 54 ++- tools/testing/selftests/mm/pagemap_ioctl.c | 13 +- tools/testing/selftests/mm/pkey-helpers.h | 6 +- .../testing/selftests/mm/prctl_thp_disable.c | 2 +- tools/testing/selftests/mm/protection_keys.c | 131 +++--- tools/testing/selftests/mm/run_vmtests.sh | 177 ++------ tools/testing/selftests/mm/soft-dirty.c | 2 +- .../selftests/mm/split_huge_page_test.c | 2 +- tools/testing/selftests/mm/thuge-gen.c | 80 +--- tools/testing/selftests/mm/transhuge-stress.c | 2 +- tools/testing/selftests/mm/uffd-common.h | 1 + tools/testing/selftests/mm/uffd-stress.c | 44 +- tools/testing/selftests/mm/uffd-unit-tests.c | 110 +++-- tools/testing/selftests/mm/uffd-wp-mremap.c | 12 +- .../selftests/mm/va_high_addr_switch.c | 40 +- .../selftests/mm/va_high_addr_switch.sh | 39 +- tools/testing/selftests/mm/vm_util.c | 133 +++--- tools/testing/selftests/mm/vm_util.h | 15 +- 43 files changed, 1376 insertions(+), 1475 deletions(-) delete mode 100644 tools/testing/selftests/mm/hugepage-mmap.c rename tools/testing/selftests/mm/{thp_settings.c => hugepage_settings.c} (60%) rename tools/testing/selftests/mm/{thp_settings.h => hugepage_settings.h} (55%) create mode 100644 tools/testing/selftests/mm/hugetlb-mmap.c rename tools/testing/selftests/mm/{hugepage-mremap.c => hugetlb-mremap.c} (94%) rename tools/testing/selftests/mm/{hugepage-shm.c => hugetlb-shm.c} (56%) rename tools/testing/selftests/mm/{hugepage-vmemmap.c => hugetlb-vmemmap.c} (76%) delete mode 100644 tools/testing/selftests/mm/map_hugetlb.c base-commit: 0b5e8d7999076ac3c490fc18376a404e2626abff -- 2.53.0