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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 17583C4167B for ; Fri, 1 Dec 2023 11:07:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:References :In-Reply-To:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=dhoexuufFl7jbYA2pTE26gGbj1F6V9pYBiZsZc8CTOU=; b=XDTqwAcaUNrvID iYYC2i7nGdJ+LXUhrs01l5Ptyvt5NFCe6DiNsbRBjc/60WQiAuTvtWe+ZbPvSExeifsQSGtPr38Vc 5gyDoROewk++SWTH90gaGfp2LcwBl/8gqWn9BM1ZkVAkFRs+yiwclghmw9XEnCKwbW2ioK3Co3dZE lWrbgl7w40hxhEWQd+uB6t9924LL4LF5ScsEYKUR8kV+Llmeh4N6uiBTqmrHrvQixzV/PgCBS9JRy Kj6ch/spYE1Wv5zsHN/sLxIFUMs8v8YWojEFRMZlec7IKM9E2EzQs5JINQ0/5NJcSZG2wzKR4Thch y3ZP73YjsJ8sYTLMZivg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r91Lw-00DI60-1m; Fri, 01 Dec 2023 11:06:36 +0000 Received: from galois.linutronix.de ([193.142.43.55]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r91Lt-00DI5O-2D; Fri, 01 Dec 2023 11:06:35 +0000 From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1701428792; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=HEhlj+ipjqr4tEgJOcMvjQsGJg7PSMW3Lo0ITUjqyJ8=; b=gVfDLjU5umc+p3JXfSXFKIMVGVVvh/YAfNpBHT1q4t9H27RaW8vqhGxIzPvK5LwXvQwvdF /JYPTDKNgMJUwy1VQmekKDtiuw9J5MRT8kLobRdLxKlvOUfGx43e57Db2Cd7dAx9syetOZ BU7cmbjv5BmHUc0EAy6VO+z0aR26jT/u8M8FH2BQ6+zo9e37Okp4KeSLznfNh/tj+3D+nn JUnzrC6xa7Oy2ZtOmEpsPXJWO6wneo3/X5sumqAOekkfTiY5vVbLzAykjFEs+lfH/gjvHp 2hQwTTxf7jJz2QGhGaXroHm9dcH/i6GePiLaIo9jyy0ijxHr/8RoxXDlbrf0jw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1701428792; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=HEhlj+ipjqr4tEgJOcMvjQsGJg7PSMW3Lo0ITUjqyJ8=; b=supcOG+ERH+rcQKMhNStZbjQi0qWHuaxf3SWtVLs0rM9jaVZ7Iy5x6/vAzCqSSHennIM26 dvRnrytMPd0gRKCA== To: Russell King , linux-pm@vger.kernel.org, loongarch@lists.linux.dev, linux-acpi@vger.kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-riscv@lists.infradead.org, kvmarm@lists.linux.dev, x86@kernel.org, linux-csky@vger.kernel.org, linux-doc@vger.kernel.org, linux-ia64@vger.kernel.org, linux-parisc@vger.kernel.org Cc: Salil Mehta , Jean-Philippe Brucker , jianyong.wu@arm.com, justin.he@arm.com, James Morse , Greg Kroah-Hartman , "Rafael J. Wysocki" , Paul Walmsley , Palmer Dabbelt , Albert Ou Subject: Re: [PATCH 08/21] drivers: base: Implement weak arch_unregister_cpu() In-Reply-To: References: Date: Fri, 01 Dec 2023 12:06:31 +0100 Message-ID: <87sf4mxjuw.ffs@tglx> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231201_030633_885499_3950A2AA X-CRM114-Status: UNSURE ( 7.16 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Nov 21 2023 at 13:44, Russell King wrote: > --- > An open question remains from the RFC v2 posting: should we provide a > __weak stub for !HOTPLUG_CPU as well, since in later patches ACPI may > reference this if the compiler doesn't optimise as we expect? You mean: extern void foo(void); if (!IS_ENABLED(CONFIG_FOO)) foo(); The kernel uses this pattern for years and if someday a compiler starts to fail to eliminate the call to 'foo()' for CONFIG_FOO=n then you already get hundreds linkage fails today. So adding one more in later patches won't matter much :) _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel