From patchwork Thu May 5 07:22:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 12839121 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 46833C43217 for ; Thu, 5 May 2022 07:26:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343762AbiEEHaA (ORCPT ); Thu, 5 May 2022 03:30:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35872 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343736AbiEEH34 (ORCPT ); Thu, 5 May 2022 03:29:56 -0400 Received: from conuserg-12.nifty.com (conuserg-12.nifty.com [210.131.2.79]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BDBAB31DE9; Thu, 5 May 2022 00:26:17 -0700 (PDT) Received: from grover.sesame (133-32-177-133.west.xps.vectant.ne.jp [133.32.177.133]) (authenticated) by conuserg-12.nifty.com with ESMTP id 2457Neni019426; Thu, 5 May 2022 16:23:40 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-12.nifty.com 2457Neni019426 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1651735421; bh=mq8Yk8ot1m2mhjLX32XL2W0Bgs0dGB51vVKxKbSTMUk=; h=From:To:Cc:Subject:Date:From; b=T77AYbWp+W8B/eXgnFGulan20TeHw3N6W7RIXt54h6dPGoOqBWyaZNhM/USm2COY1 1ai4VjljO6SS+KIZdz9zDlbPcqhQnBQeKneHyAHJdZ84G+BLsISEwrf5tO5Dr/i9PB F94bzoe3Oo0TSu1N115G9q5JVECDckPxmFdLpg9iBzUQAI0aY2wPXdhmYVFSHyMMFO q9se3e2KHp4ASisYM7uhuvaAfDDmUKe07fp1pOQ7PQebdARYuQLzr56U6xU38UYJDq pBOrMk+PhVZ1hXHhscAEgaCyhjpTKX5PIofvTZP38NtlwKytBpwbg0AN2yAxcYmtWJ JIz/mJfS9d9Bw== X-Nifty-SrcIP: [133.32.177.133] From: Masahiro Yamada To: linux-kbuild@vger.kernel.org Cc: clang-built-linux@googlegroups.com, linux-kernel@vger.kernel.org, Nicolas Schier a , Ard Biesheuvel , Luis Chamberlain , Peter Zijlstra , linuxppc-dev@lists.ozlabs.org, linux-um@lists.infradead.org, linux-s390@vger.kernel.org, Nick Desaulniers , Sami Tolvanen , Kees Cook , Masahiro Yamada Subject: [PATCH v3 00/15] kbuild: yet another series of cleanups (modpost, LTO, MODULE_REL_CRCS) Date: Thu, 5 May 2022 16:22:29 +0900 Message-Id: <20220505072244.1155033-1-masahiroy@kernel.org> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org This is the third batch of cleanups in this development cycle. Major changes in v3: - Generate symbol CRCs as C code, and remove CONFIG_MODULE_REL_CRCS. Major changes in v2: - V1 did not work with CONFIG_MODULE_REL_CRCS. I fixed this for v2. - Reflect some review comments in v1 - Refactor the code more - Avoid too long argument error Masahiro Yamada (15): modpost: mitigate false-negatives for static EXPORT_SYMBOL checks modpost: change the license of EXPORT_SYMBOL to bool type modpost: merge add_{intree_flag,retpoline,staging_flag} to add_header modpost: move *.mod.c generation to write_mod_c_files() kbuild: generate a list of objects in vmlinux kbuild: record symbol versions in *.cmd files 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 modpost: simplify the ->is_static initialization modpost: use hlist for hash table implementation kbuild: make built-in.a rule robust against too long argument error kbuild: make *.mod rule robust against too long argument error arch/powerpc/Kconfig | 1 - arch/s390/Kconfig | 1 - arch/um/Kconfig | 1 - include/asm-generic/export.h | 22 +- include/linux/export.h | 30 +-- include/linux/symversion.h | 13 + init/Kconfig | 4 - kernel/module.c | 10 +- scripts/Kbuild.include | 4 + scripts/Makefile.build | 118 +++------ scripts/Makefile.lib | 7 - scripts/Makefile.modfinal | 5 +- scripts/Makefile.modpost | 9 +- scripts/genksyms/genksyms.c | 18 +- scripts/link-vmlinux.sh | 46 ++-- scripts/mod/file2alias.c | 2 - scripts/mod/list.h | 52 ++++ scripts/mod/modpost.c | 449 ++++++++++++++++++++--------------- scripts/mod/modpost.h | 2 + 19 files changed, 402 insertions(+), 392 deletions(-) create mode 100644 include/linux/symversion.h Tested-by: Nathan Chancellor