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b=petKGAic1bz1VLuLQdg4AMqzF7adDp8lthU9JFwPyO2/45RIVwMYkJldH1G1jVha3 Zg+75ciGcKHAVukEy2QTnmInanyaiKVOTmt1LWr0HN6m7ieOLfDH8MOC2KauN9TLfq 3TN8xw1j6WB9A9LHc3O5jOGhIdIQfIFUGWp4XDvnCilZ7cnvy20kq0LTdejt/7W39l LqCv8fyDHyoFcirBhGwFMGbz9P+eK+hFkB+0rrkf07IPXOUAmwmSqcvLSiAaLzGvPr vpEedcYHpDyJ4thXMWrQQkdnHT93v+vsr5smVaY29OrPKh9JTY2g+VolTVWcEKP+Gl SuiPNIcZgMSQw== Message-ID: <3696bd1a-5eb3-4bc1-b64b-3f955fe7ac57@kernel.org> Date: Mon, 16 Mar 2026 15:10:49 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 4/5] selftests/mm: split_huge_page_test: skip the test when thp is not available To: Chunyu Hu , akpm@linux-foundation.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, Li Wang References: <20260316044335.1390608-1-chuhu@redhat.com> <20260316044335.1390608-5-chuhu@redhat.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 6256810001F X-Stat-Signature: p3ya3t4fjnifpypkn8z3gcwoants63xj X-Rspam-User: X-Rspamd-Server: rspam05 X-HE-Tag: 1773670258-442676 X-HE-Meta: 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 x2A1vzp5 v5EvoJMTlCnssvfEKC1+p+ejHhqpt/yKVQ3IY2XJNz0P1/2Lb7ZUyGT8Neol0YKWQCG4p+XYtA/DNF4AkJrk/2Js4UaNEB4nynyTeC/QFDBr0UUA9PJWjW5h4d5A4qCRNQl5t21yhnprS/m5+c213Yt1cm2n3hhtp1RG1o+4kMuLXW2obkvvtXpxT10iOB25glnlPu+XoxCBBYm8cu0u6vNxMhe4xQyHZWhAV4SSz85QmleHR2H4F6RhQGZdnEYqx6GSGerQ4UOnHpadLdnO8+zg41hJ01zlSjWK8Rxo0fuPG+M8RxmbxgYF4DcnMc0GV7MX4C3XKHHNEo/JDdCHieYpt8d34kDt5Xd8ob8Lu+mnarWGXnUsGJlT6foL48/1Eumw7 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 3/16/26 05:43, Chunyu Hu wrote: > When thp is not enabled on some kernel config such as realtime kernel, the > test will report failure. Fix the false positive by skipping the test > directly when thp is not enabled. > > Tested with thp disabled kernel: > Before The fix: > # -------------------------------------------------- > # running ./split_huge_page_test /tmp/xfs_dir_Ywup9p > # -------------------------------------------------- > # TAP version 13 > # Bail out! Reading PMD pagesize failed > # # Totals: pass:0 fail:0 xfail:0 xpass:0 skip:0 error:0 > # [FAIL] > not ok 61 split_huge_page_test /tmp/xfs_dir_Ywup9p # exit=1 > > After the fix: > # -------------------------------------------------- > # running ./split_huge_page_test /tmp/xfs_dir_YHPUPl > # -------------------------------------------------- > # TAP version 13 > # 1..0 # SKIP Transparent Hugepages not available > # [SKIP] > ok 6 split_huge_page_test /tmp/xfs_dir_YHPUPl # SKIP > > Reviewed-by: Lorenzo Stoakes (Oracle) > Reviewed-by: Zi Yan > CC: Li Wang > Signed-off-by: Chunyu Hu > --- Acked-by: David Hildenbrand (Arm) -- Cheers, David