From patchwork Fri Sep 13 18:19:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cristian Marussi X-Patchwork-Id: 1162196 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=sparclinux-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=arm.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46VP902HgMz9sP3 for ; Sat, 14 Sep 2019 04:21:24 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389857AbfIMSVS (ORCPT ); Fri, 13 Sep 2019 14:21:18 -0400 Received: from foss.arm.com ([217.140.110.172]:48086 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389898AbfIMSVS (ORCPT ); Fri, 13 Sep 2019 14:21:18 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 455AC28; Fri, 13 Sep 2019 11:21:17 -0700 (PDT) Received: from e120937-lin.cambridge.arm.com (e120937-lin.cambridge.arm.com [10.1.197.50]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id CBF3B3F71F; Fri, 13 Sep 2019 11:21:14 -0700 (PDT) From: Cristian Marussi To: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org, mark.rutland@arm.com, peterz@infradead.org, catalin.marinas@arm.com, takahiro.akashi@linaro.org, james.morse@arm.com, hidehiro.kawai.ez@hitachi.com, tglx@linutronix.de, will@kernel.org, dave.martin@arm.com, linux-arm-kernel@lists.infradead.org, mingo@redhat.com, x86@kernel.org, dzickus@redhat.com, ehabkost@redhat.com, linux@armlinux.org.uk, davem@davemloft.net, sparclinux@vger.kernel.org, hch@infradead.org Subject: [RFC PATCH v2 12/12] sparc64: smp: use generic SMP stop common code Date: Fri, 13 Sep 2019 19:19:53 +0100 Message-Id: <20190913181953.45748-13-cristian.marussi@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190913181953.45748-1-cristian.marussi@arm.com> References: <20190913181953.45748-1-cristian.marussi@arm.com> Sender: sparclinux-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: sparclinux@vger.kernel.org Make sparc64 use the generic SMP-stop logic provided by common code unified smp_send_stop() function. Signed-off-by: Cristian Marussi --- arch/sparc/Kconfig | 1 + arch/sparc/kernel/smp_64.c | 15 ++++++++------- 2 files changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 7926a2e11bdc..67d8bb741378 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -95,6 +95,7 @@ config SPARC64 select ARCH_HAS_PTE_SPECIAL select PCI_DOMAINS if PCI select ARCH_HAS_GIGANTIC_PAGE + select ARCH_USE_COMMON_SMP_STOP config ARCH_DEFCONFIG string diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c index a8275fea4b70..759e5fd867c5 100644 --- a/arch/sparc/kernel/smp_64.c +++ b/arch/sparc/kernel/smp_64.c @@ -1537,7 +1537,12 @@ static void stop_this_cpu(void *dummy) prom_stopself(); } -void smp_send_stop(void) +void arch_smp_cpus_stop_complete(void) +{ + smp_call_function(stop_this_cpu, NULL, 0); +} + +void arch_smp_stop_call(cpumask_t *cpus, unsigned int __unused) { int cpu; @@ -1546,10 +1551,7 @@ void smp_send_stop(void) #ifdef CONFIG_SERIAL_SUNHV sunhv_migrate_hvcons_irq(this_cpu); #endif - for_each_online_cpu(cpu) { - if (cpu == this_cpu) - continue; - + for_each_cpu(cpu, cpus) { set_cpu_online(cpu, false); #ifdef CONFIG_SUN_LDOMS if (ldom_domaining_enabled) { @@ -1562,8 +1564,7 @@ void smp_send_stop(void) #endif prom_stopcpu_cpuid(cpu); } - } else - smp_call_function(stop_this_cpu, NULL, 0); + } } /**