From patchwork Sun May 21 16:04:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 13249432 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 3116EC77B7C for ; Sun, 21 May 2023 16:05:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229528AbjEUQFQ (ORCPT ); Sun, 21 May 2023 12:05:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55100 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229495AbjEUQFQ (ORCPT ); Sun, 21 May 2023 12:05:16 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 60B1AC7; Sun, 21 May 2023 09:05:15 -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 E863760DE9; Sun, 21 May 2023 16:05:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CC57DC433D2; Sun, 21 May 2023 16:05:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1684685114; bh=G3drc7In4D1VhMoTc5Lfa7NiaqWtPZnS/8G0QWUohGM=; h=From:To:Cc:Subject:Date:From; b=p1ijQ+zARm7LoKfY65ZFtMu7Q8ga38E80NWgFuV7jj7qRULguwqCPqtEuW0HXHq1N AmkwuOgCJlx9eN8P4/yhxpZ0OphqpxZuTLdUQgXG46v6fOj76m5qb7pdRcfAQ041EX Ege574MPrvQZ7VTyUL4wRF9KrU9dOZjegaoUrBxiH3j3bl6FZV9iluSD6dU95zo0nz xQQbbRDaV+kaqPnKc1gdtZDH1Yme/6NcJMizqs7000mXeDgnu9K122BcjLywI8/KGL YT/wJ9xpAOu6WEi8PbnSldOZYPHDJSkbEUr7DMIDMqZE+LhElp1HR/nAvmyzLvhMSN wV2/B9AgIvp8A== From: Masahiro Yamada To: linux-kbuild@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Nathan Chancellor , Nick Desaulniers , Nicolas Schier , Masahiro Yamada Subject: [PATCH v6 00/20] Unify and , remove EXPORT_DATA_SYMBOL(), faster TRIM_UNUSED_KSYMS Date: Mon, 22 May 2023 01:04:05 +0900 Message-Id: <20230521160426.1881124-1-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. My 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. This patch set is applicable to git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git kbuild Previous version v5: https://lore.kernel.org/linux-kbuild/CAK7LNARBiOywrMLbR=9N35sk19U0QM3xcPy7d1WqV-eyb4W23w@mail.gmail.com/T/#t v4: https://lore.kernel.org/linux-kbuild/CAK7LNASDzy9RERN6+q6WgR4ROYZQue=SBqgbcoYuVePByHtk6Q@mail.gmail.com/T/#t v3: https://lore.kernel.org/all/20220928063947.299333-1-masahiroy@kernel.org/ Masahiro Yamada (20): Revert "modpost: skip ELF local symbols during section mismatch check" modpost: fix section mismatch message for R_ARM_ABS32 modpost: detect section mismatch for R_ARM_MOVW_ABS_NC and R_ARM_MOVT_ABS modpost: remove unused argument from secref_whitelist() modpost: refactor find_fromsym() and find_tosym() 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 modpost: merge fromsec=DATA_SECTIONS entries in sectioncheck table modpost: merge bad_tosec=ALL_EXIT_SECTIONS entries in sectioncheck table modpost: remove *_sections[] arrays modpost: merge two similar section mismatch warnings modpost: show offset from symbol for section mismatch warnings .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 +- arch/um/os-Linux/user_syms.c | 9 +- include/asm-generic/export.h | 83 +----- include/asm-generic/vmlinux.lds.h | 1 + include/linux/export-internal.h | 49 ++++ include/linux/export.h | 119 ++------ 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 | 454 +++++++++++++++--------------- scripts/mod/modpost.h | 6 +- scripts/remove-stale-files | 2 + 22 files changed, 345 insertions(+), 628 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