From mboxrd@z Thu Jan 1 00:00:00 1970 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 AA26BFA3740 for ; Mon, 31 Oct 2022 07:03:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229792AbiJaHDg (ORCPT ); Mon, 31 Oct 2022 03:03:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36024 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229761AbiJaHDe (ORCPT ); Mon, 31 Oct 2022 03:03:34 -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 156392C0; Mon, 31 Oct 2022 00:03:34 -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 A74D760FF5; Mon, 31 Oct 2022 07:03:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B7EE0C433D6; Mon, 31 Oct 2022 07:03:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1667199813; bh=PVt5hY1gSSLjJUQ2tcPRxGC1hcYodD3U62WliJHhyQ0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=z17BXq4t8/gH50FXC0uO6jmUQ9zHcmumRCmABPSGBpdJ3GeDC8AEKSMgQlCS0i7KM BaooUdKOQaZ70XCPRMz/9v7Nib/Vw02JYSfWlb3UGDUZVtcWWaJsalkrh8YzoA9n7n 9fg6GALfZurGw02Uz0Xj2I/+GYXu8a/HA70mHFmE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thomas Gleixner , Andi Kleen , Kan Liang , "Peter Zijlstra (Intel)" , Borislav Petkov , Linus Torvalds , linux-kernel@vger.kernel.org, Ingo Molnar Subject: [PATCH 4.14 03/34] x86/cpufeature: Fix various quality problems in the header Date: Mon, 31 Oct 2022 08:02:36 +0100 Message-Id: <20221031070140.193632481@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221031070140.108124105@linuxfoundation.org> References: <20221031070140.108124105@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Ingo Molnar commit 266d63a7d9d48c6d5dee486378ec0e8c86c4d74a upstream Thomas noticed that the new arch/x86/include/asm/cpu_device_id.h header is a train-wreck that didn't incorporate review feedback like not using __u8 in kernel-only headers. While at it also fix all the *other* problems this header has: - Use canonical names for the header guards. It's inexplicable why a non-standard guard was used. - Don't define the header guard to 1. Plus annotate the closing #endif as done absolutely every other header. Again, an inexplicable source of noise. - Move the kernel API calls provided by this header next to each other, there's absolutely no reason to have them spread apart in the header. - Align the INTEL_CPU_DESC() macro initializations vertically, this is easier to read and it's also the canonical style. - Actually name the macro arguments properly: instead of 'mod, step, rev', spell out 'model, stepping, revision' - it's not like we have a lack of characters in this header. - Actually make arguments macro-safe - again it's inexplicable why it wasn't done properly to begin with. Quite amazing how many problems a 41 lines header can contain. This kind of code quality is unacceptable, and it slipped through the review net of 2 developers and 2 maintainers, including myself, until Thomas noticed it. :-/ Reported-by: Thomas Gleixner Cc: Andi Kleen Cc: Kan Liang Cc: Peter Zijlstra (Intel) Cc: Borislav Petkov Cc: Linus Torvalds Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman --- arch/x86/include/asm/cpu_device_id.h | 31 +++++++++++++++---------------- 1 file changed, 15 insertions(+), 16 deletions(-) --- a/arch/x86/include/asm/cpu_device_id.h +++ b/arch/x86/include/asm/cpu_device_id.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _CPU_DEVICE_ID -#define _CPU_DEVICE_ID 1 +#ifndef _ASM_X86_CPU_DEVICE_ID +#define _ASM_X86_CPU_DEVICE_ID /* * Declare drivers belonging to specific x86 CPUs @@ -9,8 +9,6 @@ #include -extern const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match); - /* * Match specific microcode revisions. * @@ -22,21 +20,22 @@ extern const struct x86_cpu_id *x86_matc */ struct x86_cpu_desc { - __u8 x86_family; - __u8 x86_vendor; - __u8 x86_model; - __u8 x86_stepping; - __u32 x86_microcode_rev; + u8 x86_family; + u8 x86_vendor; + u8 x86_model; + u8 x86_stepping; + u32 x86_microcode_rev; }; -#define INTEL_CPU_DESC(mod, step, rev) { \ - .x86_family = 6, \ - .x86_vendor = X86_VENDOR_INTEL, \ - .x86_model = mod, \ - .x86_stepping = step, \ - .x86_microcode_rev = rev, \ +#define INTEL_CPU_DESC(model, stepping, revision) { \ + .x86_family = 6, \ + .x86_vendor = X86_VENDOR_INTEL, \ + .x86_model = (model), \ + .x86_stepping = (stepping), \ + .x86_microcode_rev = (revision), \ } +extern const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match); extern bool x86_cpu_has_min_microcode_rev(const struct x86_cpu_desc *table); -#endif +#endif /* _ASM_X86_CPU_DEVICE_ID */