From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 CB15333689F for ; Thu, 21 May 2026 21:55:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779400517; cv=none; b=gq6smqDdLQTnZxAOiWkzK9PZyopX5KnBh6pMhghSFpxpQXkRuYZfC1OBxLwYVsHx10v1CxfQyuatC9/vzFX62gNZHJj0t7QEK3pWc9e8ikWn2w8nE8B24OUdHyKxY+/f3U9SF94K54vi7xlp8Hrmj7wTG0lC2BM17erFyHKgH5Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779400517; c=relaxed/simple; bh=JOlWVyG3Zt5AJX7TfG1jOg7WBc8UPbRd7dRzRJ5nJgo=; h=Date:To:From:Subject:Message-Id; b=OrXZgvTJmPDfv7Pew/9wVS8F5/NqT3WGvMSLXl+Y9NMCIO/wxnIKXapJFpPo9gBInwEOlkL4HVOSo1cNVLkmyJwIn3CMICpVeU0vr5inad+pMGhodnG88ReX5Flw9h90BowoN+wHpf4tEmxRnN3BvEBgjhH6JpqGpvc4efUGkmw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=hkR2DUsX; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="hkR2DUsX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 601D11F000E9; Thu, 21 May 2026 21:55:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1779400515; bh=ZT3T79kjkWcPpCYLYK0J1j6uHO/6B2lWe8Gylmx8K0k=; h=Date:To:From:Subject; b=hkR2DUsXP8KpkbLs3f7UwWbN4oY/aAeL7huaiVa2DE4dp/ijrqW13zDcHNpeIZC5l R3nTMJrk8bkcHucJsaxaPOOg50pTj/oH7OfhrszRxpXX2IzkdJXuTUIe0lMwl3kvuJ O4d81Svwvs81FF1f2sCHJm6ZoR1CfvxgZh7kf6ig= Date: Thu, 21 May 2026 14:55:14 -0700 To: mm-commits@vger.kernel.org,sayalip@linux.ibm.com,akpm@linux-foundation.org From: Andrew Morton Subject: + selftests-mm-fix-hugetlb-pathname-construction-in-hugetlb_reparenting_testsh.patch added to mm-new branch Message-Id: <20260521215515.601D11F000E9@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: selftests/mm: fix hugetlb pathname construction in hugetlb_reparenting_test.sh has been added to the -mm mm-new branch. Its filename is selftests-mm-fix-hugetlb-pathname-construction-in-hugetlb_reparenting_testsh.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-fix-hugetlb-pathname-construction-in-hugetlb_reparenting_testsh.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. The mm-new branch of mm.git is not included in linux-next If a few days of testing in mm-new is successful, the patch will me moved into mm.git's mm-unstable branch, which is included in linux-next Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: Sayali Patil Subject: selftests/mm: fix hugetlb pathname construction in hugetlb_reparenting_test.sh Date: Thu, 21 May 2026 12:17:44 +0530 The hugetlb_reparenting_test.sh script constructs hugetlb cgroup memory interface file names based on the configured huge page size. The script formats the size only in MB units, which causes mismatches on systems using larger huge pages where the kernel exposes normalized units (e.g. "1GB" instead of "1024MB"). As a result, the test fails to locate the corresponding cgroup files when 1GB huge pages are configured. Update the script to detect the huge page size and select the appropriate unit (MB or GB) so that the constructed paths match the kernel's hugetlb controller naming. Also print an explicit "Fail" message when a test failure occurs to improve result visibility. Link: https://lore.kernel.org/837ce751965c93f74c95d89587debf1e93281364.1779296493.git.sayalip@linux.ibm.com Fixes: e487a5d513cb ("selftest/mm: make hugetlb_reparenting_test tolerant to async reparenting") Signed-off-by: Sayali Patil Reviewed-by: Zi Yan Acked-by: David Hildenbrand (Arm) Tested-by: Venkat Rao Bagalkote Cc: Dev Jain Cc: Liam Howlett Cc: Miaohe Lin Cc: Michal Hocko Cc: Oscar Salvador Cc: "Ritesh Harjani (IBM)" Cc: Shuah Khan Signed-off-by: Andrew Morton --- tools/testing/selftests/mm/hugetlb_reparenting_test.sh | 14 ++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) --- a/tools/testing/selftests/mm/hugetlb_reparenting_test.sh~selftests-mm-fix-hugetlb-pathname-construction-in-hugetlb_reparenting_testsh +++ a/tools/testing/selftests/mm/hugetlb_reparenting_test.sh @@ -48,6 +48,13 @@ function get_machine_hugepage_size() { } MB=$(get_machine_hugepage_size) +if (( MB >= 1024 )); then + UNIT="GB" + MB_DISPLAY=$((MB / 1024)) +else + UNIT="MB" + MB_DISPLAY=$MB +fi function cleanup() { echo cleanup @@ -88,6 +95,7 @@ function assert_with_retry() { if [[ $elapsed -ge $timeout ]]; then echo "actual = $((${actual%% *} / 1024 / 1024)) MB" echo "expected = $((${expected%% *} / 1024 / 1024)) MB" + echo FAIL cleanup exit 1 fi @@ -108,11 +116,13 @@ function assert_state() { fi assert_with_retry "$CGROUP_ROOT/a/memory.$usage_file" "$expected_a" - assert_with_retry "$CGROUP_ROOT/a/hugetlb.${MB}MB.$usage_file" "$expected_a_hugetlb" + assert_with_retry \ + "$CGROUP_ROOT/a/hugetlb.${MB_DISPLAY}${UNIT}.$usage_file" "$expected_a_hugetlb" if [[ -n "$expected_b" && -n "$expected_b_hugetlb" ]]; then assert_with_retry "$CGROUP_ROOT/a/b/memory.$usage_file" "$expected_b" - assert_with_retry "$CGROUP_ROOT/a/b/hugetlb.${MB}MB.$usage_file" "$expected_b_hugetlb" + assert_with_retry \ + "$CGROUP_ROOT/a/b/hugetlb.${MB_DISPLAY}${UNIT}.$usage_file" "$expected_b_hugetlb" fi } _ Patches currently in -mm which might be from sayalip@linux.ibm.com are selftests-mm-restore-default-nr_hugepages-value-via-exit-trap-in-charge_reserved_hugetlbsh.patch selftests-mm-fix-hugetlb-pathname-construction-in-charge_reserved_hugetlbsh.patch selftests-mm-restore-default-nr_hugepages-value-via-exit-trap-in-hugetlb_reparenting_testsh.patch selftests-mm-fix-hugetlb-pathname-construction-in-hugetlb_reparenting_testsh.patch selftests-mm-fix-cgroup-task-placement-and-drop-memorycurrent-checks-in-hugetlb_reparenting_testsh.patch selftests-mm-size-tmpfs-according-to-pmd-page-size-in-split_huge_page_test.patch selftests-mm-free-dynamically-allocated-pmd-sized-buffers-in-split_huge_page_test.patch selftest-mm-register-existing-mapping-with-userfaultfd-in-hugetlb-mremap.patch selftests-mm-ensure-destination-is-hugetlb-backed-in-hugetlb-mremap.patch selftests-mm-skip-uffd-wp-mremap-if-uffd-write-protect-is-unsupported.patch selftests-mm-skip-uffd-stress-test-when-nr_pages_per_cpu-is-zero.patch selftests-mm-skip-uffd-stress-test-when-nr_pages_per_cpu-is-zero-fix.patch selftests-mm-move-hwpoison-setup-into-run_test-and-silence-modprobe-output-for-memory-failure-category.patch selftests-mm-clarify-alternate-unmapping-in-compaction_test.patch