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Sat, 11 May 2024 22:43:03 +0000 Received: from SN7PR10MB6287.namprd10.prod.outlook.com ([fe80::6c60:5db4:7058:1440]) by SN7PR10MB6287.namprd10.prod.outlook.com ([fe80::6c60:5db4:7058:1440%6]) with mapi id 15.20.7544.052; Sat, 11 May 2024 22:43:03 +0000 From: Kris Van Hees To: linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, linux-modules@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: Kris Van Hees , Nick Alcock , Steven Rostedt , Luis Chamberlain , Masami Hiramatsu , Nick Desaulniers , Jiri Olsa , Elena Zannoni Subject: [PATCH v2 3/6] kbuild: generate a linker map for vmlinux.o Date: Sat, 11 May 2024 18:40:32 -0400 Message-ID: <20240511224035.27775-4-kris.van.hees@oracle.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240511224035.27775-1-kris.van.hees@oracle.com> References: <20240511224035.27775-1-kris.van.hees@oracle.com> X-ClientProxiedBy: MN2PR16CA0043.namprd16.prod.outlook.com (2603:10b6:208:234::12) To SN7PR10MB6287.namprd10.prod.outlook.com (2603:10b6:806:26d::14) Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN7PR10MB6287:EE_|DS7PR10MB5184:EE_ X-MS-Office365-Filtering-Correlation-Id: dbebf08e-f2bb-4d76-c9e5-08dc720bb7dd X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230031|1800799015|366007|376005; 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The generation of offset range data for builtin modules depends on that linker map to know what offsets in an ELF section belong to an object file for a particular builtin module. Signed-off-by: Kris Van Hees Reviewed-by: Nick Alcock --- Changes since v1: - Renamed CONFIG_BUILTIN_RANGES to CONFIG_BUILTIN_MODULE_RANGES --- scripts/Makefile.vmlinux_o | 3 +++ 1 file changed, 3 insertions(+) diff --git a/scripts/Makefile.vmlinux_o b/scripts/Makefile.vmlinux_o index 508b3294e2cf1..e4a92838780d5 100644 --- a/scripts/Makefile.vmlinux_o +++ b/scripts/Makefile.vmlinux_o @@ -45,9 +45,12 @@ objtool-args = $(vmlinux-objtool-args-y) --link # Link of vmlinux.o used for section mismatch analysis # --------------------------------------------------------------------------- +vmlinux-o-ld-args-$(CONFIG_BUILTIN_MODULE_RANGES) += -Map=$@.map + quiet_cmd_ld_vmlinux.o = LD $@ cmd_ld_vmlinux.o = \ $(LD) ${KBUILD_LDFLAGS} -r -o $@ \ + $(vmlinux-o-ld-args-y) \ $(addprefix -T , $(initcalls-lds)) \ --whole-archive vmlinux.a --no-whole-archive \ --start-group $(KBUILD_VMLINUX_LIBS) --end-group \