From patchwork Fri May 3 03:02:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Hubbard X-Patchwork-Id: 13652287 Received: from NAM11-BN8-obe.outbound.protection.outlook.com (mail-bn8nam11on2089.outbound.protection.outlook.com [40.107.236.89]) (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 2E7411BF2B; Fri, 3 May 2024 03:02:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.236.89 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714705347; cv=fail; b=b7uAMBr/ESA6CcYFOeMrrjz1IwLwzJKJiSEWMWPiTMI+cLJpb1Mgs0wZLdCSum/cpQXF7kNS142Qa9vFiDO4jcrHM6pK8ptrvTUXcHgeWhEToL73RdgxdxAd7jG6MuLyoTMxaTSOHnxfEdhSOJ9ySSvXabrtnKug/241SXQeMMQ= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714705347; c=relaxed/simple; bh=FrW0QCYswwBHG33dYl6LglaBS7QJD8E+wWjt3tX3yfU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=SRxyFjnKcmGycrGQR6KTiHukXw2MYLk4U5T8aKG7qMVU4JceU4ilVHbJRLM0uqoE1+G88NJRirpxtLVw1QWYx8cuR2QTalAlgaZRmSZwS4aNfngL+sM7PBWcSc2a/4sizLV6iXF+qop8XLNkH7/e8LA2nOijXnHD0zwG36E5b60= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com; spf=fail smtp.mailfrom=nvidia.com; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b=TSIeVu5P; arc=fail smtp.client-ip=40.107.236.89 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=nvidia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b="TSIeVu5P" ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=TYix1v1Az8JMp8Hfs2vt5IhlV1xjhl+J8fEdOs6dNVlNdvJTJhbko3bu5kN3T3PolGXmPl7fZDW5newGEb4JA56jCjW4AyPIXWKw3+16lrIqQQ6GsxM3mJQWnAaD0qqIQ7DpnL1DDRvFjn1dMa/UZ/1EUGpqaOQxRuTz7vuQEOGMHu13mnj/INvTw2SNOmQHmGRcC0n+lU9IYJ4K3zXNq/uQsEMzLRAIMJZTa7IbpnIL/8iEcwGhpIIQKPwwzfFV9XHfwGKB7zhIHqkfFg2hLmF2tIElaS/DX+0fvdqKS1Q4DwxThSaxB3+iDcKrdR1xWNetDS5clkjCkytJpoLMBw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=WrtAYNTBOn7GExk9ndx+JU/5Z0QkjDJ5YY6nCJy4GCc=; b=UgMFBNlN/ntoCvwesNENW6ajgNX+JDqWu0xqQgohdSfeaDT2JUtbfiwl9/2HmrjfxDdGFY9yXIzZ3I6UU2yXXepF6iYJ72eDbif/DKJ5Eeke5X8wU/MoAB9BtCmqJV4rUTOYh4+r4WE23hRMDqYX3imQMLeIK3dbibCDHL8914CcRI6+LuoFu1dIlHGuq3VcHexkcu1eEx95MrW6kp5HsKQJRhtEdpRU9rE4eKLy2rUtqvVjbPM+6M90iRUIkopfJdAEd6v3xREaDSIgVZvZ2rmu5acDfJVRyFQAWzyVSrlcJS6aX5m8/iFTLCfM7v0f5SgG8eUk6pg2djSWXsb6ZQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=WrtAYNTBOn7GExk9ndx+JU/5Z0QkjDJ5YY6nCJy4GCc=; b=TSIeVu5Piwd7Li53F5bd2c2xOHBMhmMge5UodbAXWUJLHcGpeoJKUSufJbQsWi0FkutgvlwCYbjfaBSSiUYGQwulZ0Np9CcBNeEso6q7Eaqva/oL4SUoSwB9hyt+WYttPasm2J7jOZyk1rKbjkylg1DjmTW8HRUNMmMZb6e2d79CobiCx/rBN8p1e2AlyUSqVxVSQkIvLUbMIMJZJe8nikku31AcbNRY+5WYZQskCYf0bKU7HfZqeHxfAOuMWG9688GhVQToLqx+4hDoEaMKK3BkHX0yopZgS99B+0XNBR6T3kAgTZqPCQknOfevsFsQ2wxzVw+FQGlQ4fwqCt5Gpg== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from BY5PR12MB4130.namprd12.prod.outlook.com (2603:10b6:a03:20b::16) by LV8PR12MB9109.namprd12.prod.outlook.com (2603:10b6:408:18a::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7544.28; Fri, 3 May 2024 03:02:17 +0000 Received: from BY5PR12MB4130.namprd12.prod.outlook.com ([fe80::2cf4:5198:354a:cd07]) by BY5PR12MB4130.namprd12.prod.outlook.com ([fe80::2cf4:5198:354a:cd07%4]) with mapi id 15.20.7519.035; Fri, 3 May 2024 03:02:17 +0000 From: John Hubbard To: Shuah Khan Cc: angquan yu , "Kirill A . Shutemov" , Ingo Molnar , Binbin Wu , Alexey Dobriyan , Rick Edgecombe , Sohil Mehta , Yu-cheng Yu , Dave Hansen , Valentin Obst , linux-kselftest@vger.kernel.org, LKML , llvm@lists.linux.dev, x86@kernel.org, John Hubbard Subject: [PATCH 1/7] selftests/x86: fix Makefile dependencies to work with clang Date: Thu, 2 May 2024 20:02:08 -0700 Message-ID: <20240503030214.86681-2-jhubbard@nvidia.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240503030214.86681-1-jhubbard@nvidia.com> References: <20240503030214.86681-1-jhubbard@nvidia.com> X-NVConfidentiality: public X-ClientProxiedBy: BYAPR02CA0049.namprd02.prod.outlook.com (2603:10b6:a03:54::26) To BY5PR12MB4130.namprd12.prod.outlook.com (2603:10b6:a03:20b::16) Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BY5PR12MB4130:EE_|LV8PR12MB9109:EE_ X-MS-Office365-Filtering-Correlation-Id: b875bae5-0091-4647-ddb3-08dc6b1d70e8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230031|7416005|376005|366007|1800799015; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BY5PR12MB4130.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(7416005)(376005)(366007)(1800799015);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: b875bae5-0091-4647-ddb3-08dc6b1d70e8 X-MS-Exchange-CrossTenant-AuthSource: BY5PR12MB4130.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 May 2024 03:02:17.3202 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 3lZ3YbCUJlR/KcKySDHMbOWraMGRAfQjbdfJQYdrgt7jvcta4Y/YC5jw39jvN5fRewnQXDAzkwJaqIqwPEir5A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV8PR12MB9109 First of all, in order to build with clang at all, one must first apply Valentin Obst's build fix for LLVM [1]. Once that is done, then when building with clang, via: make LLVM=1 -C tools/testing/selftests ...the following build failure occurs in selftests/x86: clang: error: cannot specify -o when generating multiple output files This happens because, although gcc doesn't complain if you invoke it like this: gcc file1.c header2.h ...clang won't accept that form--it rejects the .h file(s). Also, the above approach is inaccurate anyway, because file.c includes header2.h in this case, and the inclusion of header2.h on the invocation is an artifact of the Makefile's desire to maintain dependencies. In Makefiles of this type, a better way to do it is to use Makefile dependencies to trigger the appropriate incremental rebuilds, and separately use file lists (see EXTRA_FILES in this commit) to track what to pass to the compile. This commit splits those concepts up, by setting up both EXTRA_FILES and the Makefile dependencies with a single call to the new Makefile function extra-files. That fixes the build failure, while still providing the correct dependencies in all cases. [1] https://lore.kernel.org/all/20240329-selftests-libmk-llvm-rfc-v1-1-2f9ed7d1c49f@valentinobst.de/ Signed-off-by: John Hubbard --- tools/testing/selftests/x86/Makefile | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile index 0b872c0a42d2..c1269466e0f8 100644 --- a/tools/testing/selftests/x86/Makefile +++ b/tools/testing/selftests/x86/Makefile @@ -73,10 +73,10 @@ all_64: $(BINARIES_64) EXTRA_CLEAN := $(BINARIES_32) $(BINARIES_64) $(BINARIES_32): $(OUTPUT)/%_32: %.c helpers.h - $(CC) -m32 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl -lm + $(CC) -m32 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $< $(EXTRA_FILES) -lrt -ldl -lm $(BINARIES_64): $(OUTPUT)/%_64: %.c helpers.h - $(CC) -m64 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl + $(CC) -m64 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $< $(EXTRA_FILES) -lrt -ldl # x86_64 users should be encouraged to install 32-bit libraries ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),01) @@ -100,10 +100,19 @@ warn_32bit_failure: exit 0; endif -# Some tests have additional dependencies. -$(OUTPUT)/sysret_ss_attrs_64: thunks.S -$(OUTPUT)/ptrace_syscall_32: raw_syscall_helper_32.S -$(OUTPUT)/test_syscall_vdso_32: thunks_32.S +# Add an additional file to the source file list for a given target, and also +# add a Makefile dependency on that same file. However, do these separately, so +# that the compiler invocation ("$(CC) file1.c file2.S") is not combined with +# the dependencies ("header3.h"), because clang, unlike gcc, will not accept +# header files as an input to the compiler invocation. +define extra-files +$(OUTPUT)/$(1): EXTRA_FILES := $(2) +$(OUTPUT)/$(1): $(2) +endef + +$(eval $(call extra-files,sysret_ss_attrs_64,thunks.S)) +$(eval $(call extra-files,ptrace_syscall_32,raw_syscall_helper_32.S)) +$(eval $(call extra-files,test_syscall_vdso_32,thunks_32.S)) # check_initial_reg_state is special: it needs a custom entry, and it # needs to be static so that its interpreter doesn't destroy its initial