From patchwork Wed Feb 1 19:34:37 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vijay Kumar X-Patchwork-Id: 722655 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3vDCyJ6BNhz9sXx for ; Thu, 2 Feb 2017 06:35:04 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751353AbdBATfD (ORCPT ); Wed, 1 Feb 2017 14:35:03 -0500 Received: from userp1040.oracle.com ([156.151.31.81]:31462 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751045AbdBATfC (ORCPT ); Wed, 1 Feb 2017 14:35:02 -0500 Received: from userv0021.oracle.com (userv0021.oracle.com [156.151.31.71]) by userp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id v11JYxcc019046 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 1 Feb 2017 19:35:00 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userv0021.oracle.com (8.14.4/8.14.4) with ESMTP id v11JYxxi001510 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 1 Feb 2017 19:34:59 GMT Received: from abhmp0007.oracle.com (abhmp0007.oracle.com [141.146.116.13]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id v11JYxdJ026233; Wed, 1 Feb 2017 19:34:59 GMT Received: from ca-qasparc20.us.oracle.com (/10.147.24.73) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 01 Feb 2017 11:34:58 -0800 From: Vijay Kumar To: davem@davemloft.net Cc: sparclinux@vger.kernel.org, karl.volz@oracle.com, rob.gardner@oracle.com, linux-kernel@vger.kernel.org, vijay.ac.kumar@oracle.com Subject: [PATCH v3 1/4] sparc64: Set cpu state to offline when stopped Date: Wed, 1 Feb 2017 11:34:37 -0800 Message-Id: <1485977680-203775-2-git-send-email-vijay.ac.kumar@oracle.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1485977680-203775-1-git-send-email-vijay.ac.kumar@oracle.com> References: <1485977680-203775-1-git-send-email-vijay.ac.kumar@oracle.com> X-Source-IP: userv0021.oracle.com [156.151.31.71] Sender: sparclinux-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: sparclinux@vger.kernel.org CPU needs to be marked offline before stopping it. When not marked offline, the xcall receives HV_EWOULDBLOCK and so assumes that not all CPUs received the message, and retries. After 10000 retries, it finally fails with fatal mondo timeout. Signed-off-by: Vijay Kumar --- arch/sparc/kernel/smp_64.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c index 0ce347f..712bf1b 100644 --- a/arch/sparc/kernel/smp_64.c +++ b/arch/sparc/kernel/smp_64.c @@ -1443,6 +1443,7 @@ void __irq_entry smp_receive_signal_client(int irq, struct pt_regs *regs) static void stop_this_cpu(void *dummy) { + set_cpu_online(smp_processor_id(), false); prom_stopself(); } @@ -1454,6 +1455,8 @@ void smp_send_stop(void) for_each_online_cpu(cpu) { if (cpu == smp_processor_id()) continue; + + set_cpu_online(cpu, false); #ifdef CONFIG_SUN_LDOMS if (ldom_domaining_enabled) { unsigned long hv_err;