From patchwork Sat May 13 20:44:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 13240315 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B8EFBC77B7F for ; Sat, 13 May 2023 20:45:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230501AbjEMUpP (ORCPT ); Sat, 13 May 2023 16:45:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33744 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229464AbjEMUpO (ORCPT ); Sat, 13 May 2023 16:45:14 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5071C2D51; Sat, 13 May 2023 13:45:13 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E2E4861558; Sat, 13 May 2023 20:45:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B4DFCC433D2; Sat, 13 May 2023 20:45:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1684010712; bh=WefmwDbTlKZwMEUwatpKr0TGAhRypftwwE7L0w+8BHc=; h=From:To:Cc:Subject:Date:From; b=hLsvgVoklhXVqXeRKMx+a/X53xPra7P2reL7r+xMoleA5sr+x5EaYEUthGmo6WbO+ Sl4APIkyztPGOBh+9fnOhqDOYvC2XLf321BwjyXCrMrILypIyVtPbNU+r6q+I9jGAu tmw6rg2/94dh+mjNllhpyYVfZxufgyO5PWwUmkETgsleRZh/EKBIbDVEVC6G/T9uHX afyGfKs9fhxdrRFw7geRc4SffhZGtqWrHK3/dhFF8Qasq7npX5QgZ1FOXWpqliZPmF FKqKYJOY/aL85Dfgi12Z8TML4wu2raO7s+Y9k3nihwXyZO4pzFME45frUdtljpeLrh PRX3odU897sFA== From: Masahiro Yamada To: linux-kbuild@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Nathan Chancellor , Nick Desaulniers , Nicolas Pitre , Nicolas Schier , Masahiro Yamada Subject: [PATCH v4 00/21] Unify and , remove EXPORT_DATA_SYMBOL(), faster TRIM_UNUSED_KSYMS Date: Sun, 14 May 2023 05:44:41 +0900 Message-Id: <20230513204502.1593923-1-masahiroy@kernel.org> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org This patch set refactors modpost first to make it easier to add new code. Main goals: - Refactors EXPORT_SYMBOL, and . You can still put EXPORT_SYMBOL() in *.S file, very close to the definition, but you do not need to care about whether it is a function or a data. This removes EXPORT_DATA_SYMBOL(). - Re-implement TRIM_UNUSED_KSYMS in one-pass. This makes the building faster. - Move the static EXPORT_SYMBOL check to modpost. This also makes the building faster. Previous version v3: https://lore.kernel.org/all/20220928063947.299333-1-masahiroy@kernel.org/ Masahiro Yamada (21): modpost: remove broken calculation of exception_table_entry size modpost: remove fromsym info in __ex_table section mismatch warning modpost: remove get_prettyname() modpost: squash report_extable_warnings() into extable_mismatch_handler() modpost: squash report_sec_mismatch() into default_mismatch_handler() modpost: clean up is_executable_section() modpost: squash extable_mismatch_handler() into default_mismatch_handler() modpost: pass 'tosec' down to default_mismatch_handler() modpost: pass section index to find_elf_symbol2() modpost: simplify find_elf_symbol() modpost: rename find_elf_symbol() and find_elf_symbol2() modpost: unify 'sym' and 'to' in default_mismatch_handler() modpost: replace r->r_offset, r->r_addend with faddr, taddr modpost: remove is_shndx_special() check from section_rel(a) modpost: pass struct module pointer to check_section_mismatch() kbuild: generate KSYMTAB entries by modpost ia64,export.h: replace EXPORT_DATA_SYMBOL* with EXPORT_SYMBOL* modpost: check static EXPORT_SYMBOL* by modpost again modpost: squash sym_update_namespace() into sym_add_exported() modpost: use null string instead of NULL pointer for default namespace kbuild: implement CONFIG_TRIM_UNUSED_KSYMS without recursion .gitignore | 1 - Makefile | 19 +- arch/ia64/include/asm/Kbuild | 1 + arch/ia64/include/asm/export.h | 3 - arch/ia64/kernel/head.S | 2 +- arch/ia64/kernel/ivt.S | 2 +- include/asm-generic/export.h | 83 +---- include/asm-generic/vmlinux.lds.h | 1 + include/linux/export-internal.h | 49 +++ include/linux/export.h | 116 ++----- include/linux/pm.h | 8 +- kernel/module/internal.h | 12 + scripts/Makefile.build | 19 +- scripts/Makefile.modpost | 7 + scripts/adjust_autoksyms.sh | 73 ---- scripts/basic/fixdep.c | 3 +- scripts/check-local-export | 70 ---- scripts/gen_ksymdeps.sh | 30 -- scripts/mod/modpost.c | 534 ++++++++++++------------------ scripts/mod/modpost.h | 1 + scripts/remove-stale-files | 2 + 21 files changed, 317 insertions(+), 719 deletions(-) delete mode 100644 arch/ia64/include/asm/export.h delete mode 100755 scripts/adjust_autoksyms.sh delete mode 100755 scripts/check-local-export delete mode 100755 scripts/gen_ksymdeps.sh