From patchwork Fri May 13 11:39:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 12848711 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 D7F28C4167B for ; Fri, 13 May 2022 11:42:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1379957AbiEMLmQ (ORCPT ); Fri, 13 May 2022 07:42:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39180 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1379950AbiEMLmP (ORCPT ); Fri, 13 May 2022 07:42:15 -0400 Received: from conuserg-07.nifty.com (conuserg-07.nifty.com [210.131.2.74]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C2FF55B898; Fri, 13 May 2022 04:42:12 -0700 (PDT) Received: from grover.sesame (133-32-177-133.west.xps.vectant.ne.jp [133.32.177.133]) (authenticated) by conuserg-07.nifty.com with ESMTP id 24DBeEwZ008349; Fri, 13 May 2022 20:40:14 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-07.nifty.com 24DBeEwZ008349 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1652442015; bh=mZnH7vlFKLT7FEGBr7iAv5DRO4vduuM0Ets3Kz9Jvhc=; h=From:To:Cc:Subject:Date:From; b=eBlvAJYSjmMcKgi8G34ggTIB8DLZKAWpu/qnpZRI9LrpD8IX0NZI161d4KPni9kip OsHIZuCJOOVkQWDzMRvNkbB02FC6qYwzQqzkHtwY8+2/H/vtAKbVNrfwUCt398DSXD qsT23bRXyCVHrEb4FnHcy6MjSeby4IuMH8xU6YpmAG/WigzvQywqFqPhfRZzXh+XJS VFoZ15+mw896qyOvCUSSBlZskUqUdkplXJo9aCB/nKwjvKdFSI3ig7fJgB3Jve0en/ yVS8gRw+ybImV4ughl4umgqzuVfKD8Lu64oR42w8dnAw2foPz+rbVY+nwp2bOQeScn uWsgfe2fYCSow== X-Nifty-SrcIP: [133.32.177.133] From: Masahiro Yamada To: linux-kbuild@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Nathan Chancellor , Nick Desaulniers , Nicolas Schier , Peter Zijlstra , linux-modules@vger.kernel.org, llvm@lists.linux.dev, Ard Biesheuvel , Sami Tolvanen , Masahiro Yamada Subject: [PATCH v6 00/10] kbuild: yet another series of cleanups (modpost, LTO, MODULE_REL_CRCS, export.h) Date: Fri, 13 May 2022 20:39:20 +0900 Message-Id: <20220513113930.10488-1-masahiroy@kernel.org> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Precedence: bulk List-ID: This is the third batch of cleanups in this development cycle. Changes in v6: - Fix false-positive warnings when CONFIG_TRIM_UNUSED_KSYMS=y Changes in v5: - Fix the build error when CONFIG_DEBUG_INFO_BTF=y (reported by Nathan) - Clean up arch/m68k/include/asm/export.h (Nick) - Keep gen_symversions (and will be removed by a later patch) - Add more comments in the script Changes in v4: - Rename .vmlinux-symver.c to .vmlinux.export.c because I notice this approach is useful for further cleanups, not only for modversioning but also for overall EXPORT_SYMBOL. - New patch - New. Resent of my previous submission. https://lore.kernel.org/all/20210831074004.3195284-10-masahiroy@kernel.org/ - New Resent of my previous submission https://lore.kernel.org/linux-kbuild/20210831074004.3195284-11-masahiroy@kernel.org/ Changes in v3: - New patch Changes in v2: - Simplify the implementation (parse .cmd files after ELF) - New patch - replace the chain of $(if ...) with $(and ) - New patch - New patch Masahiro Yamada (10): modpost: extract symbol versions from *.cmd files kbuild: link symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS kbuild: stop merging *.symversions genksyms: adjust the output format to modpost kbuild: do not create *.prelink.o for Clang LTO or IBT kbuild: check static EXPORT_SYMBOL* by script instead of modpost kbuild: make built-in.a rule robust against too long argument error kbuild: make *.mod rule robust against too long argument error kbuild: add cmd_and_savecmd macro kbuild: rebuild multi-object modules when objtool is updated arch/m68k/include/asm/Kbuild | 1 + arch/m68k/include/asm/export.h | 2 - arch/powerpc/Kconfig | 1 - arch/s390/Kconfig | 1 - arch/um/Kconfig | 1 - include/asm-generic/export.h | 22 ++- include/linux/export-internal.h | 16 +++ include/linux/export.h | 30 ++-- init/Kconfig | 4 - kernel/module.c | 10 +- scripts/Kbuild.include | 10 +- scripts/Makefile.build | 134 ++++++------------ scripts/Makefile.lib | 7 - scripts/Makefile.modfinal | 5 +- scripts/Makefile.modpost | 9 +- scripts/check-local-export | 64 +++++++++ scripts/genksyms/genksyms.c | 18 +-- scripts/link-vmlinux.sh | 33 ++--- scripts/mod/modpost.c | 236 +++++++++++++++++++++----------- 19 files changed, 320 insertions(+), 284 deletions(-) delete mode 100644 arch/m68k/include/asm/export.h create mode 100644 include/linux/export-internal.h create mode 100755 scripts/check-local-export Reported-by: Sedat Dilek Tested-by: Sedat Dilek # LLVM-14 (x86-64)