From patchwork Fri May 12 21:07:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 13239822 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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 E3F6FC7EE30 for ; Fri, 12 May 2023 21:18:12 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.533985.831194 (Exim 4.92) (envelope-from ) id 1pxa9C-0003Ab-FN; Fri, 12 May 2023 21:17:54 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 533985.831194; Fri, 12 May 2023 21:17:54 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pxa9C-00038D-7v; Fri, 12 May 2023 21:17:54 +0000 Received: by outflank-mailman (input) for mailman id 533985; Fri, 12 May 2023 21:17:52 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pxZzE-0004FP-Nk for xen-devel@lists.xenproject.org; Fri, 12 May 2023 21:07:36 +0000 Received: from galois.linutronix.de (galois.linutronix.de [193.142.43.55]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 052382db-f109-11ed-b229-6b7b168915f2; Fri, 12 May 2023 23:07:36 +0200 (CEST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 052382db-f109-11ed-b229-6b7b168915f2 Message-ID: <20230512205256.747254502@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1683925656; 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=L20cp74EuALPKGNFqf3nNcEqUQ5njakWZxxEQyBoBM4=; b=IylmoIIxIQfNggmcsvbOfTRB5loy+PFqncSpuulDyE2pbmPfQMyckdIFZ+PGkzKMchVerz 824tdk3ji+s+muh2aWpQ4hOPSBstiEsc8Ycxd4R8aWnO6PDBIRQTGiDZsISTCLa+aukFhm x4A6LGNRLz29TcCZNg1iWdMrCiuBl9jKJu/vrQgbemP3n1nAr+CmyVo7neEnv+1EJTHsH/ PTZz1ICYbBy547B2BRLaDGVl6AxYrgsPn9ONT0qbOk4Suw7f/40PEdLNffxaVBOkmtcJpy fK3mSXgZy/WEaiJstDZUyiyvtWGw9h1MOrKQgrzZW1MPAeydm25ZeQzLxo4ymQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1683925656; 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=L20cp74EuALPKGNFqf3nNcEqUQ5njakWZxxEQyBoBM4=; b=GiZO41VRe8r3LWpyXMGSu8KPxp+TVGrarZhX/4m7s2HIKxd6xgo9fUFalNt2YFazivfLTZ JUofQxXulXrXv+Dw== 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 , 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, "James E.J. Bottomley" , Helge Deller , linux-parisc@vger.kernel.org, Paul Walmsley , Palmer Dabbelt , linux-riscv@lists.infradead.org, Mark Rutland , Sabin Rapan , "Michael Kelley (LINUX)" , Ross Philipson Subject: [patch V4 24/37] csky/smp: Switch to hotplug core state synchronization References: <20230512203426.452963764@linutronix.de> MIME-Version: 1.0 Date: Fri, 12 May 2023 23:07:35 +0200 (CEST) From: Thomas Gleixner Switch to the CPU hotplug core state tracking and synchronization mechanim. No functional change intended. Signed-off-by: Thomas Gleixner Tested-by: Michael Kelley --- arch/csky/Kconfig | 1 + arch/csky/include/asm/smp.h | 2 +- arch/csky/kernel/smp.c | 8 ++------ 3 files changed, 4 insertions(+), 7 deletions(-) --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -96,6 +96,7 @@ config CSKY select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_STACKPROTECTOR select HAVE_SYSCALL_TRACEPOINTS + select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU select MAY_HAVE_SPARSE_IRQ select MODULES_USE_ELF_RELA if MODULES select OF --- a/arch/csky/include/asm/smp.h +++ b/arch/csky/include/asm/smp.h @@ -23,7 +23,7 @@ void __init set_send_ipi(void (*func)(co int __cpu_disable(void); -void __cpu_die(unsigned int cpu); +static inline void __cpu_die(unsigned int cpu) { } #endif /* CONFIG_SMP */ --- a/arch/csky/kernel/smp.c +++ b/arch/csky/kernel/smp.c @@ -291,12 +291,8 @@ int __cpu_disable(void) return 0; } -void __cpu_die(unsigned int cpu) +void arch_cpuhp_cleanup_dead_cpu(unsigned int cpu) { - if (!cpu_wait_death(cpu, 5)) { - pr_crit("CPU%u: shutdown failed\n", cpu); - return; - } pr_notice("CPU%u: shutdown\n", cpu); } @@ -304,7 +300,7 @@ void __noreturn arch_cpu_idle_dead(void) { idle_task_exit(); - cpu_report_death(); + cpuhp_ap_report_dead(); while (!secondary_stack) arch_cpu_idle();