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Mon, 30 Mar 2026 11:15:19 -0400 X-MC-Unique: dC5UyRSYMXuiPYXmccF87w-1 X-Mimecast-MFC-AGG-ID: dC5UyRSYMXuiPYXmccF87w_1774883717 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 5476E18002E0; Mon, 30 Mar 2026 15:15:16 +0000 (UTC) Received: from dell-per7425-02.rhts.eng.pek2.redhat.com (dell-per7425-02.rhts.eng.pek2.redhat.com [10.73.116.18]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 30B5219560B1; Mon, 30 Mar 2026 15:15:07 +0000 (UTC) From: Chunyu Hu To: akpm@linux-foundation.org, david@kernel.org, shuah@kernel.org, linux-mm@kvack.org, ljs@kernel.org Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, ziy@nvidia.com, baolin.wang@linux.alibaba.com, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev, chuhu@redhat.com Subject: [PATCH v7 0/7] selftests/mm: skip several tests when thp is not available Date: Mon, 30 Mar 2026 23:14:56 +0800 Message-ID: <20260330151503.670415-1-chuhu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-Mimecast-MFC-PROC-ID: nWZHnhds8D7hIXvOZNc16-4oNI-FBv5S1FppPR8lItg_1774883717 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: AE5ED100012 X-Stat-Signature: rc9a93rwgschkc77piw5esaotu1rnreu X-HE-Tag: 1774883723-925744 X-HE-Meta: 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 XMwHVaSg tjC+1q234+M4L2xN3HIo7/Ml5tQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: There are several tests requires transprarent hugepages, when run on thp disabled kernel such as realtime kernel, there will be false negative. Mark those tests as skip when thp is not available. Changes in v7: - patch 1 add reviewed-by from Lorenzo - patch 4 new patch to make ksft_exit_fail_perror variable length arguments - patch 5 change to use %.*s to print the buf when error happened Limit the buflen arg as 2 minimum. Check the error path (numwritten < 0). And use the ksft_exit_fail_perror to print the logs in error path Chagnes in v6: - patch 3 add reviewed-by from Lorenzo - patch 4 handle the errno before and after close(), suggested by AI Changes in v5: - patch 1, patch 3 updated reviwed-by and acked-by - patch 4 adds new patch for robust write_file() Changes in v4: - patch 1 update to use thp_available instead of thp_is_enabled, suggested by ai review - removed reviewed-by and acked-by Changes in v3: - patch 1 update commit message to show the log snippet with where the fail happens, change the 'false positive' to 'false negative'. Update reviwed by - patch 2 update reviewed-by - patch 3 make write_file to void return - patch 4 and patch 5 updated reviewed-by/acked-by Changes in v2: - replace 'false postive' with 'false negative' in cover letter - patch 1 and patch 2 add reviewed-by/acked-by - new patch 3 to add write_file() in vm_util as a common helper - patch 4 removed the {} in if block, removed the write_file helper rename chunk in v1. Add reviewed-by - patch 5 move the exit chunk to the front of ksft_print_headers() as suggested by David. Add review by. Chunyu Hu (7): selftests/mm/guard-regions: skip collapse test when thp not enabled selftests/mm: soft-dirty: skip two tests when thp is not available selftests/mm: move write_file helper to vm_util kselftest: make ksft_exit_fail_perror support va args selftests/mm/vm_util: robust write_file() selftests/mm: split_huge_page_test: skip the test when thp is not available selftests/mm: transhuge_stress: skip the test when thp not available tools/testing/selftests/kselftest.h | 21 +++++++++-- tools/testing/selftests/mm/guard-regions.c | 4 +++ tools/testing/selftests/mm/soft-dirty.c | 4 ++- .../selftests/mm/split_huge_page_test.c | 19 +++------- tools/testing/selftests/mm/thp_settings.c | 35 ++----------------- tools/testing/selftests/mm/thp_settings.h | 1 - tools/testing/selftests/mm/transhuge-stress.c | 4 +++ tools/testing/selftests/mm/vm_util.c | 24 +++++++++++++ tools/testing/selftests/mm/vm_util.h | 2 ++ 9 files changed, 62 insertions(+), 52 deletions(-) base-commit: 7aaa8047eafd0bd628065b15757d9b48c5f9c07d -- 2.53.0