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[23.128.96.35]) by mx.google.com with ESMTPS id o15-20020a656a4f000000b00565eedb1cf8si30661741pgu.825.2023.10.02.04.32.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Oct 2023 04:32:29 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.35 as permitted sender) client-ip=23.128.96.35; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=g63JmB3F; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.35 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by groat.vger.email (Postfix) with ESMTP id A4989802B168; Mon, 2 Oct 2023 04:30:03 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at groat.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236705AbjJBL3W (ORCPT + 17 others); Mon, 2 Oct 2023 07:29:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53832 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236626AbjJBL3U (ORCPT ); Mon, 2 Oct 2023 07:29:20 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 90DFBE1; Mon, 2 Oct 2023 04:29:17 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPS id E58DFC433A9; Mon, 2 Oct 2023 11:29:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1696246157; bh=paEg7jbS6ClwadfTjCY8spaWc4zoBRD4LNZENNl+tI0=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=g63JmB3FwRN+ONhF0yFWNoeQbjgW/+dLj88bOfgo+g4WnhlVqgsUhvBXVnqIBEzEa NKA9xpv4v5bqJz5FshYIhdGxjJU/3V+BIpN6DXNW9yYrdu3/naHi10PvjraNLxtpvP lqVL9unEsn8m6mroat6KP9YTq+agMsSs1+ErBDFVshRf5GSQdusPBba1LGchOx1Xw8 ZC73IWYzrJKtOWva3dJcYa0yaY51FbhDQU/XF7igYRnnXwiQodv8iGaZ712BCL6IEh wNHCzz00hC9vYtc17q6bF+uXjeU37b1Ejcs8O5iyNoQZWkXnhXqj8ZfBgNxH5Kk0qe f49vMMABDx3zA== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id C993EE784B3; Mon, 2 Oct 2023 11:29:16 +0000 (UTC) From: Joel Granados via B4 Relay Date: Mon, 02 Oct 2023 13:30:38 +0200 Subject: [PATCH v3 3/7] arch/x86: Remove now superfluous sentinel elem from ctl_table arrays MIME-Version: 1.0 Message-Id: <20231002-jag-sysctl_remove_empty_elem_arch-v3-3-606da2840a7a@samsung.com> References: <20231002-jag-sysctl_remove_empty_elem_arch-v3-0-606da2840a7a@samsung.com> In-Reply-To: <20231002-jag-sysctl_remove_empty_elem_arch-v3-0-606da2840a7a@samsung.com> To: Luis Chamberlain , willy@infradead.org, josh@joshtriplett.org, Kees Cook , Iurii Zaikin , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Gerald Schaefer , Russell King , Catalin Marinas , Will Deacon , Mark Rutland , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Andy Lutomirski , Paul Walmsley , Palmer Dabbelt , Albert Ou , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Guo Ren , Alexey Gladkov Cc: linux-fsdevel@vger.kernel.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-riscv@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-ia64@vger.kernel.org, linux-csky@vger.kernel.org, Joel Granados , Ingo Molnar X-Mailer: b4 0.13-dev-86aa5 X-Developer-Signature: v=1; a=openpgp-sha256; l=1593; i=j.granados@samsung.com; h=from:subject:message-id; bh=PwJWF8dvooepoMNz/p+1M3MxYdMvjcobbwcaQ8BSBXs=; b=owEB7QES/pANAwAKAbqXzVK3lkFPAcsmYgBlGqoTaJgUocisU/uKHeKQW8lN62asIcRF0tSyU j1bINvl5aaJAbMEAAEKAB0WIQSuRwlXJeYxJc7LJ5C6l81St5ZBTwUCZRqqEwAKCRC6l81St5ZB T2WoC/42iLPK3Fpv9v0/UXHAJOtoq4rmwpC6LV+o8A8lRqkO0uVf5VMImgogTwxzXQr1P3Yp0/f VkRKFwLFysV0LI5OTH18s+1eSsihUKcyNYRItL+Uq+SG7vI8uv3w4uq7ydWykr0/1p5fe90bFnZ rT/ph6DGwQ4RaSRd2IwaAXrJoLHLTaGD3zAA5eRCmU++8Rwy2+XIB0JWzH9N6Mp7B4yMOH+oCni h64V+45R1T69SCPmnI4rrG9sYfo2+IWLBGP+D8FI36C+FMUkuhSBjEnDfpt24eZTWWnMsAsJRbS 541J6mTwxGXlPqq3c2f4wXLAMWCm7qio0X0B9ufvk4Ck4h8LNlUwr4yB41O/apZOtev+opRUo2B KvuQDk4hosgIzP4dO6PC22swDlVoomqCwgBL6V0twDOwiRoFLJstFxcGJY+c4YgKfSn9XOzxLK0 boNkZU5mRziaQEPzuSz2ndrwThriKlNPPGY3pJaax9H01L2JtJ5vAJV1/zgY7rDFMm7jU= X-Developer-Key: i=j.granados@samsung.com; a=openpgp; fpr=F1F8E46D30F0F6C4A45FF4465895FAAC338C6E77 X-Endpoint-Received: by B4 Relay for j.granados@samsung.com/default with auth_id=70 X-Original-From: Joel Granados Reply-To: X-Spam-Status: No, score=-1.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on groat.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (groat.vger.email [0.0.0.0]); Mon, 02 Oct 2023 04:30:03 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1778643211747996450 X-GMAIL-MSGID: 1778643211747996450 From: Joel Granados This commit comes at the tail end of a greater effort to remove the empty elements at the end of the ctl_table arrays (sentinels) which will reduce the overall build time size of the kernel and run time memory bloat by ~64 bytes per sentinel (further information Link : https://lore.kernel.org/all/ZO5Yx5JFogGi%2FcBo@bombadil.infradead.org/) Remove sentinel element from sld_sysctl and itmt_kern_table. This removal is safe because register_sysctl_init and register_sysctl implicitly use the array size in addition to checking for the sentinel. Reviewed-by: Ingo Molnar Acked-by: Dave Hansen # for x86 Signed-off-by: Joel Granados --- arch/x86/kernel/cpu/intel.c | 1 - arch/x86/kernel/itmt.c | 1 - 2 files changed, 2 deletions(-) diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index be4045628fd3..d9bb53f49a4d 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -1016,7 +1016,6 @@ static struct ctl_table sld_sysctls[] = { .extra1 = SYSCTL_ZERO, .extra2 = SYSCTL_ONE, }, - {} }; static int __init sld_mitigate_sysctl_init(void) diff --git a/arch/x86/kernel/itmt.c b/arch/x86/kernel/itmt.c index ee4fe8cdb857..9a7c03d47861 100644 --- a/arch/x86/kernel/itmt.c +++ b/arch/x86/kernel/itmt.c @@ -74,7 +74,6 @@ static struct ctl_table itmt_kern_table[] = { .extra1 = SYSCTL_ZERO, .extra2 = SYSCTL_ONE, }, - {} }; static struct ctl_table_header *itmt_sysctl_header;