From nobody Mon Apr 6 12:18:30 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 8BC1638550C for ; Thu, 19 Mar 2026 16:07:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773936473; cv=none; b=Mz2KmAka/c69vczisCGTyOw9ibKbcSc8dfs+f4Mi3Ow/HsaGSXWkGdTBsG9WXe1JHX058TyfWCzVjD8+5SD/q9WCnPJzhQTB/10o4iyHr+qAmxNyku6TI3fDBVJsqxYGZGmo+uy3Y/MjDOr8+QJCsDdrqXdGqUNQl9J+aC8tQVk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773936473; c=relaxed/simple; bh=8kcSjbIIEeXJAGXv7dzdKrrWxBbWF0Q3ow1gEe2ds6c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EMnxtAfe3uoAs25K2wbwCsPoTJl6r2iQgHcLhRfPa6gmz2qyaZHfhKQ7yUY2186fcXH+Us2512HvOp433DifTuJXTOkvJA3AtAOjGqrBth0Og35NSSxCvAZvIRQsWug6HHVpG6vbjZFih+puo3Esj/QUf3mc5101HcLfYcnMd/0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=Tz/QU23V; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Tz/QU23V" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1773936471; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=cP9CaaUU0YGWeU606cF4HfEnHjH3cqBLv/sm6TUkYWs=; b=Tz/QU23VvdLCVY4JkwF/wG9Edl3M3OIX52wGDnt4N8ZSZdmDb28rNrGMi2fjGIFvyxvhCQ Svo65pf/YNtNevMqkR8H/27v5lv74G9HoAacT0NZFfNIgxasxFr44HNTsHVKV8l5jCxvWJ gTA9bG3C6pr9qNzHUfAe8UrNnEpI5us= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-572-OACiM49tMYSzxxk1g9DFfw-1; Thu, 19 Mar 2026 12:07:48 -0400 X-MC-Unique: OACiM49tMYSzxxk1g9DFfw-1 X-Mimecast-MFC-AGG-ID: OACiM49tMYSzxxk1g9DFfw_1773936465 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (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-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id DACE71956062; Thu, 19 Mar 2026 16:07:44 +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-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 67FF030001A1; Thu, 19 Mar 2026 16:07:36 +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, Li Wang Subject: [PATCH v4 4/5] selftests/mm: split_huge_page_test: skip the test when thp is not available Date: Fri, 20 Mar 2026 00:06:55 +0800 Message-ID: <20260319160656.1480279-5-chuhu@redhat.com> In-Reply-To: <20260319160656.1480279-1-chuhu@redhat.com> References: <20260319160656.1480279-1-chuhu@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Content-Type: text/plain; charset="utf-8" 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=3D1 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 Acked-by: David Hildenbrand (Arm) Reviewed-by: Mike Rapoport (Microsoft) Reviewed-by: Lorenzo Stoakes (Oracle) Reviewed-by: Zi Yan CC: Li Wang Signed-off-by: Chunyu Hu --- V3 chagnes: - add acked-by from David - add reviewed by from Mike V2 changes: - removed the {} in if block - removed the write_file helper rename chunk, as there's a new patch 3 to resolve the conflict with thp_settings.h by moving it to vm_util. - Add reviewed by from Zi and Lorenzo --- tools/testing/selftests/mm/split_huge_page_test.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/testing/selftests/mm/split_huge_page_test.c b/tools/test= ing/selftests/mm/split_huge_page_test.c index 93f205327b84..500d07c4938b 100644 --- a/tools/testing/selftests/mm/split_huge_page_test.c +++ b/tools/testing/selftests/mm/split_huge_page_test.c @@ -21,6 +21,7 @@ #include #include "vm_util.h" #include "kselftest.h" +#include "thp_settings.h" =20 uint64_t pagesize; unsigned int pageshift; @@ -757,6 +758,9 @@ int main(int argc, char **argv) ksft_finished(); } =20 + if (!thp_is_enabled()) + ksft_exit_skip("Transparent Hugepages not available\n"); + if (argc > 1) optional_xfs_path =3D argv[1]; =20 --=20 2.53.0