From patchwork Sun May 14 15:27:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 13240490 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 3FC48C77B7D for ; Sun, 14 May 2023 15:27:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229894AbjENP1t (ORCPT ); Sun, 14 May 2023 11:27:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229585AbjENP1s (ORCPT ); Sun, 14 May 2023 11:27:48 -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 85AE42699; Sun, 14 May 2023 08:27:47 -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 19FEC60C13; Sun, 14 May 2023 15:27:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D067CC433D2; Sun, 14 May 2023 15:27:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1684078066; bh=r1tkmI2iEcOcIELwB2Ima7nyWT8YGyUf3YoSV3HSsU0=; h=From:To:Cc:Subject:Date:From; b=BhjrHIR+thZMHkL4EKvgyjDGybfhaLUJgiNhy6UwdeTUbLQhYMdnEC8+tGauN57x4 5wcbEV+2SQDUMH1LJJNqe0tm9aXNwvyk6tG+7SZZ2oJTWZ/Lv0iqZ0kM+nWNgSCS1u XacgDl9ukZn3RGRhFgX340Nc8KChwKWgp76mGl6wDur5pSp5ilTuu49viTPSIiaDKL oyvXORCnxtWYiRqtUWDJrh7OpKYZG6BTMiqQ5bTAwZMw1Qm17AJ5+YILyee7mpMTB3 iE51FA+D88JVngz6dCBR1mfiJnwjhp6sH5hl9UgvhH72ajHSaoJ3OI1eWX7GDrLlc7 rWvmQuM2UKXng== 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 v5 00/21] Unify and , remove EXPORT_DATA_SYMBOL(), faster TRIM_UNUSED_KSYMS Date: Mon, 15 May 2023 00:27:18 +0900 Message-Id: <20230514152739.962109-1-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. Previous version 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 (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: rename find_elf_symbol() and find_elf_symbol2() modpost: 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 .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 | 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 | 561 ++++++++++++------------------ scripts/mod/modpost.h | 1 + scripts/remove-stale-files | 2 + 21 files changed, 343 insertions(+), 723 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