From patchwork Tue Nov 21 13:45:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Russell King \(Oracle\)" X-Patchwork-Id: 745740 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="zuBcYUCQ" Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [IPv6:2001:4d48:ad52:32c8:5054:ff:fe00:142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D1EDC210B; Tue, 21 Nov 2023 05:45:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Date:Sender:Message-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:Subject:Cc:To:From:References: In-Reply-To:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=l0bVO3Ofxt9I6VpXHzidso1VbLhWBJYttUHQB+3pVpM=; b=zuBcYUCQiAG0NR88MSgxbqDO6V Xrx1OtZxl7qgEAcM4dhRnGuG4j4UAfNVoteCbEsmDpsS18qgO1t6X4tE6HheDuU+sGcwB61GFsXY3 oAsHidn5Amx9CErfoca+RAWdG+p+9hdYGw7FtnYFnqcQWpdrXDSiZC1x26zWOaaMM/IMc+HaJSod/ L3yyVf812AHdqwjcVS07SJ4E3oY48l13IDkcNT+YfqUNMWwEQGWxajN9gNGiZWPDyO4oHavpx0HSR R0OqxZdTKTKtchrXvERekFPPpwVEabOxvXL9IQPbrSo6u8W/MzMCqUOPPtmMok8Gwh4a4LeqjOWnq 2zkVvF6g==; Received: from e0022681537dd.dyn.armlinux.org.uk ([fd8f:7570:feb6:1:222:68ff:fe15:37dd]:43168 helo=rmk-PC.armlinux.org.uk) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1r5R44-0007B5-1i; Tue, 21 Nov 2023 13:45:20 +0000 Received: from rmk by rmk-PC.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1r5R46-00Ct0A-GJ; Tue, 21 Nov 2023 13:45:22 +0000 In-Reply-To: References: From: Russell King (Oracle) To: 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 , Huacai Chen , WANG Xuerui Subject: [PATCH 18/21] LoongArch: Use the __weak version of arch_unregister_cpu() Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline Message-Id: Sender: Russell King Date: Tue, 21 Nov 2023 13:45:22 +0000 From: James Morse LoongArch provides its own arch_unregister_cpu(). This clears the hotpluggable flag, then unregisters the CPU. It isn't necessary to clear the hotpluggable flag when unregistering a cpu. unregister_cpu() writes NULL to the percpu cpu_sys_devices pointer, meaning cpu_is_hotpluggable() will return false, as get_cpu_device() has returned NULL. Remove arch_unregister_cpu() and use the __weak version. Signed-off-by: James Morse Reviewed-by: Jonathan Cameron Reviewed-by: Gavin Shan Signed-off-by: Russell King (Oracle) --- Changes since RFC v3: * Adapt for removal of EXPORT_SYMBOL()s --- arch/loongarch/kernel/topology.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/arch/loongarch/kernel/topology.c b/arch/loongarch/kernel/topology.c index 7dfb46c68f58..866c2c9ef6ab 100644 --- a/arch/loongarch/kernel/topology.c +++ b/arch/loongarch/kernel/topology.c @@ -18,12 +18,4 @@ int arch_register_cpu(int cpu) c->hotpluggable = !io_master(cpu); return register_cpu(c, cpu); } - -void arch_unregister_cpu(int cpu) -{ - struct cpu *c = &per_cpu(cpu_devices, cpu); - - c->hotpluggable = 0; - unregister_cpu(c); -} #endif