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Howlett" , Suren Baghdasaryan , Vlastimil Babka , pedro.falcato@gmail.com, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, Oliver Sang , John Hubbard , Tejun Heo , Johannes Weiner , Michal Koutny , Andrew Morton , Shakeel Butt Subject: [PATCH v7 4/6] selftests: pidfd: add pidfd.h UAPI wrapper Date: Thu, 30 Jan 2025 20:40:29 +0000 Message-ID: <751907a39349d0a1526f6f63f4270e4a5700e244.1738268370.git.lorenzo.stoakes@oracle.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: References: X-ClientProxiedBy: LNXP265CA0044.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:5c::32) To BYAPR10MB3366.namprd10.prod.outlook.com (2603:10b6:a03:14f::25) 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: BYAPR10MB3366:EE_|SN7PR10MB6547:EE_ X-MS-Office365-Filtering-Correlation-Id: d6c91255-2f9b-453b-44a5-08dd416e5f88 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|366016|1800799024; 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Work around this by adding a wrapper for linux/pidfd.h to tools/include/ which sets the linux/fcntl.h header guard ahead of importing the pidfd.h header file. Adjust the pidfd selftests Makefile to reference this include directory and put it at a higher precidence than any make header installed headers to ensure the wrapper is preferred. This way we can directly import the UAPI header file without issue, use the latest system header file without having to duplicate anything. Reviewed-by: Shuah Khan Signed-off-by: Lorenzo Stoakes --- tools/include/linux/pidfd.h | 14 ++++++++++++++ tools/testing/selftests/pidfd/Makefile | 3 +-- 2 files changed, 15 insertions(+), 2 deletions(-) create mode 100644 tools/include/linux/pidfd.h diff --git a/tools/include/linux/pidfd.h b/tools/include/linux/pidfd.h new file mode 100644 index 000000000000..113c8023072d --- /dev/null +++ b/tools/include/linux/pidfd.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef _TOOLS_LINUX_PIDFD_H +#define _TOOLS_LINUX_PIDFD_H + +/* + * Some systems have issues with the linux/fcntl.h import in linux/pidfd.h, so + * work around this by setting the header guard. + */ +#define _LINUX_FCNTL_H +#include "../../../include/uapi/linux/pidfd.h" +#undef _LINUX_FCNTL_H + +#endif /* _TOOLS_LINUX_PIDFD_H */ diff --git a/tools/testing/selftests/pidfd/Makefile b/tools/testing/selftests/pidfd/Makefile index 301343a11b62..5363d5ab27a4 100644 --- a/tools/testing/selftests/pidfd/Makefile +++ b/tools/testing/selftests/pidfd/Makefile @@ -1,9 +1,8 @@ # SPDX-License-Identifier: GPL-2.0-only -CFLAGS += -g $(KHDR_INCLUDES) -pthread -Wall +CFLAGS += -g -isystem $(top_srcdir)/tools/include $(KHDR_INCLUDES) -pthread -Wall TEST_GEN_PROGS := pidfd_test pidfd_fdinfo_test pidfd_open_test \ pidfd_poll_test pidfd_wait pidfd_getfd_test pidfd_setns_test \ pidfd_file_handle_test pidfd_bind_mount include ../lib.mk -