From patchwork Fri Apr 14 23:44:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 83615 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp740483vqo; Fri, 14 Apr 2023 17:18:30 -0700 (PDT) X-Google-Smtp-Source: AKy350YJYw9PyvKGz/CO2lUo7DV7zAiG1WIxBXpE7ZymztUSEPvHgYABokTHpYCgmijFUoieC9of X-Received: by 2002:a17:90a:c402:b0:23f:3539:d326 with SMTP id i2-20020a17090ac40200b0023f3539d326mr7500420pjt.0.1681517909690; Fri, 14 Apr 2023 17:18:29 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1681517909; cv=none; d=google.com; s=arc-20160816; b=PSDbKcB46xJSrO1bQs20twQa7gsWlbu5ViK3Ycj05tLKKRqajb7F0VRraHDwvKjrTH Ju5o1vwj5LqockjppLs5JNecBG71xVL3wIhbx4UC7ugZWK1UZZRLKWCszxjbMqHBJuWt oAzLsg0ViMSkChDhrjfJ9PtZzaLWc3vfZIFFWzpeBKYb7k/P7/0deXsUclRM/kO+de+0 EUB/YLW6NJEelzEHtS7PLaE3ERbW9p+Df1rarOIyGsoO23kI/VmmGD0TkUuiFyaD2WeP Vn5w1X3i8IafmN2vzEYiB2gDeMK7jEfb/h+F84cPcinwYSKF5Ek6u9fz+A/QobEEwJOu 2V/g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:date:mime-version:references:subject:cc:to:from :dkim-signature:dkim-signature:message-id; bh=R05iW7fNVcum8Q+mjf2E3yOsCRNZdrRM4MkZfsXKqKc=; b=JXaf4ltDpgZzlmhqDyH5luIbhk+NH1JP+0ldP4bF+oN95gZvo+cVWST3LCl9mY1Al/ Q/zBuq/ui5ChG+1jQyVYuzVENnHLfIV6pfdh3YArzB1vApwmQrVI5mU2wOaP8TZGUpmV lmgNYDWIyvPdmf50Z2rmCAeGpEC+sKSEibP8RTIKlWwWwpswvsGNlfh253u2bJ5vx2W4 Y7CL3ccZ7L4IHJmwfSj+SZZAbwj0N8xQKb1QBsEX4A0+qzM30i1MbAhLoQ9W9qN9lzwC yZEKlhuJQzJ+8zv73Xhf4PpxlBEycxfC0050pG+z2gawFYkxK7U/ocT35POp7BAxaUS+ avWg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=aUiik8Sr; dkim=neutral (no key) header.i=@linutronix.de; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id hk11-20020a17090b224b00b0022387a1f9a5si6359400pjb.134.2023.04.14.17.18.14; Fri, 14 Apr 2023 17:18:29 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=aUiik8Sr; dkim=neutral (no key) header.i=@linutronix.de; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230309AbjDNXqV (ORCPT + 99 others); Fri, 14 Apr 2023 19:46:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54890 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230325AbjDNXpf (ORCPT ); Fri, 14 Apr 2023 19:45:35 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 89D979754; Fri, 14 Apr 2023 16:44:56 -0700 (PDT) Message-ID: <20230414232310.754812729@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1681515894; 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: references:references; bh=R05iW7fNVcum8Q+mjf2E3yOsCRNZdrRM4MkZfsXKqKc=; b=aUiik8SryxpjaeRHuGDH1CVCPJrHdz4ToboDiBvyrgybp5D/pPkGbz7paiwVK8VODAE0fl SgTT+QXtuBbN0fpZxUWKztpQGU0bjPZSUW3fxyRe9IQVkvcbXWq/0x43vpjbVvOarJH7HV uIjYrrAOYGCrtSVeXL3Klmw/1hn994FxUZywCAJZ5ETy96ETN4uYpOv1uP93+BscjKqka+ yexDk6oAjmOIdMrSOugyHKVHXN1255/Us+8JjFFS+8Qfs8u4ygXpDFKFDNp8KDDwtuiQU3 N8RPw7aSRn8YI2NswkTZsr81vwh3F5+iNvqvFAUv07ki8YW+7xmZPHzCBoIC9w== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1681515894; 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: references:references; bh=R05iW7fNVcum8Q+mjf2E3yOsCRNZdrRM4MkZfsXKqKc=; b=caenbNdiUoGPpEuAuhFVb0nh5RPBSUL+B8V0qrD3LKpWvQp6oNtGy6pLTh0H4xLk3s7H+h 2RFNt+MohEqWQ1CQ== From: Thomas Gleixner To: LKML Cc: x86@kernel.org, David Woodhouse , Andrew Cooper , Brian Gerst , "Arjan van de Veen" , Paolo Bonzini , Paul McKenney , Tom Lendacky , Sean Christopherson , Oleksandr Natalenko , Paul Menzel , "Guilherme G. Piccoli" , Piotr Gorski , "James E.J. Bottomley" , Helge Deller , linux-parisc@vger.kernel.org, David Woodhouse , Usama Arif , Juergen Gross , Boris Ostrovsky , xen-devel@lists.xenproject.org, Russell King , Arnd Bergmann , linux-arm-kernel@lists.infradead.org, Catalin Marinas , Will Deacon , Guo Ren , linux-csky@vger.kernel.org, Thomas Bogendoerfer , linux-mips@vger.kernel.org, Paul Walmsley , Palmer Dabbelt , linux-riscv@lists.infradead.org, Mark Rutland , Sabin Rapan Subject: [patch 25/37] parisc: Switch to hotplug core state synchronization References: <20230414225551.858160935@linutronix.de> MIME-Version: 1.0 Date: Sat, 15 Apr 2023 01:44:54 +0200 (CEST) X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1763199323823292628?= X-GMAIL-MSGID: =?utf-8?q?1763199323823292628?= Switch to the CPU hotplug core state tracking and synchronization mechanim. No functional change intended. Signed-off-by: Thomas Gleixner Cc: "James E.J. Bottomley" Cc: Helge Deller Cc: linux-parisc@vger.kernel.org --- arch/parisc/Kconfig | 1 + arch/parisc/kernel/process.c | 4 ++-- arch/parisc/kernel/smp.c | 7 +++---- 3 files changed, 6 insertions(+), 6 deletions(-) --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -56,6 +56,7 @@ config PARISC select HAVE_ARCH_SECCOMP_FILTER select HAVE_ARCH_TRACEHOOK select HAVE_REGS_AND_STACK_ACCESS_API + select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU select GENERIC_SCHED_CLOCK select GENERIC_IRQ_MIGRATION if SMP select HAVE_UNSTABLE_SCHED_CLOCK if SMP --- a/arch/parisc/kernel/process.c +++ b/arch/parisc/kernel/process.c @@ -166,8 +166,8 @@ void arch_cpu_idle_dead(void) local_irq_disable(); - /* Tell __cpu_die() that this CPU is now safe to dispose of. */ - (void)cpu_report_death(); + /* Tell the core that this CPU is now safe to dispose of. */ + cpuhp_ap_report_dead(); /* Ensure that the cache lines are written out. */ flush_cache_all_local(); --- a/arch/parisc/kernel/smp.c +++ b/arch/parisc/kernel/smp.c @@ -500,11 +500,10 @@ int __cpu_disable(void) void __cpu_die(unsigned int cpu) { pdc_cpu_rendezvous_lock(); +} - if (!cpu_wait_death(cpu, 5)) { - pr_crit("CPU%u: cpu didn't die\n", cpu); - return; - } +void arch_cpuhp_cleanup_dead_cpu(unsigned int cpu) +{ pr_info("CPU%u: is shutting down\n", cpu); /* set task's state to interruptible sleep */