Message ID | 577CD806.8000008@linux.vnet.ibm.com (mailing list archive) |
---|---|
State | Superseded |
Headers | show
Return-Path: <linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org> X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3rkxJ46g3Yz9sD5 for <patchwork-incoming@ozlabs.org>; Wed, 6 Jul 2016 20:07:16 +1000 (AEST) Received: from ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 3rkxJ45MzJzDr3T for <patchwork-incoming@ozlabs.org>; Wed, 6 Jul 2016 20:07:16 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3rkxGs73hbzDqyy for <linuxppc-dev@lists.ozlabs.org>; Wed, 6 Jul 2016 20:06:13 +1000 (AEST) Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u66A4CKG086431 for <linuxppc-dev@lists.ozlabs.org>; Wed, 6 Jul 2016 06:06:11 -0400 Received: from e23smtp07.au.ibm.com (e23smtp07.au.ibm.com [202.81.31.140]) by mx0a-001b2d01.pphosted.com with ESMTP id 240ndx1d6m-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for <linuxppc-dev@lists.ozlabs.org>; Wed, 06 Jul 2016 06:06:11 -0400 Received: from localhost by e23smtp07.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for <linuxppc-dev@lists.ozlabs.org> from <xinhui.pan@linux.vnet.ibm.com>; Wed, 6 Jul 2016 20:06:09 +1000 Received: from d23dlp02.au.ibm.com (202.81.31.213) by e23smtp07.au.ibm.com (202.81.31.204) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Wed, 6 Jul 2016 20:06:08 +1000 X-IBM-Helo: d23dlp02.au.ibm.com X-IBM-MailFrom: xinhui.pan@linux.vnet.ibm.com X-IBM-RcptTo: linuxppc-dev@lists.ozlabs.org Received: from d23relay08.au.ibm.com (d23relay08.au.ibm.com [9.185.71.33]) by d23dlp02.au.ibm.com (Postfix) with ESMTP id B91F42BB0059 for <linuxppc-dev@lists.ozlabs.org>; Wed, 6 Jul 2016 20:06:07 +1000 (EST) Received: from d23av05.au.ibm.com (d23av05.au.ibm.com [9.190.234.119]) by d23relay08.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u66A67iX10617152 for <linuxppc-dev@lists.ozlabs.org>; Wed, 6 Jul 2016 20:06:07 +1000 Received: from d23av05.au.ibm.com (localhost [127.0.0.1]) by d23av05.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u66A66qq012013 for <linuxppc-dev@lists.ozlabs.org>; Wed, 6 Jul 2016 20:06:07 +1000 Received: from [10.0.2.15] (adminib-8ad6lrj.cn.ibm.com [9.123.229.128]) by d23av05.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u66A62GP011869; Wed, 6 Jul 2016 20:06:02 +1000 Date: Wed, 06 Jul 2016 18:05:58 +0800 From: xinhui <xinhui.pan@linux.vnet.ibm.com> User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.8.0 MIME-Version: 1.0 To: Peter Zijlstra <peterz@infradead.org> Subject: Re: [PATCH v2 0/4] implement vcpu preempted check References: <1467124991-13164-1-git-send-email-xinhui.pan@linux.vnet.ibm.com> <20160706065255.GH30909@twins.programming.kicks-ass.net> In-Reply-To: <20160706065255.GH30909@twins.programming.kicks-ass.net> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16070610-0044-0000-0000-000001BE1054 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16070610-0045-0000-0000-00000511DDA7 Message-Id: <577CD806.8000008@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-07-06_05:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1604210000 definitions=main-1607060090 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Linux on PowerPC Developers Mail List <linuxppc-dev.lists.ozlabs.org> List-Unsubscribe: <https://lists.ozlabs.org/options/linuxppc-dev>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe> List-Archive: <http://lists.ozlabs.org/pipermail/linuxppc-dev/> List-Post: <mailto:linuxppc-dev@lists.ozlabs.org> List-Help: <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help> List-Subscribe: <https://lists.ozlabs.org/listinfo/linuxppc-dev>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe> Cc: linux-s390@vger.kernel.org, dave@stgolabs.net, boqun.feng@gmail.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, waiman.long@hpe.com, virtualization@lists.linux-foundation.org, mingo@redhat.com, paulus@samba.org, schwidefsky@de.ibm.com, pbonzini@redhat.com, paulmck@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" <linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org> |
diff --git a/kernel/locking/qspinlock_paravirt.h b/kernel/locking/qspinlock_paravirt.h index 74c4a86..40560e8 100644 --- a/kernel/locking/qspinlock_paravirt.h +++ b/kernel/locking/qspinlock_paravirt.h @@ -312,7 +312,8 @@ pv_wait_early(struct pv_node *prev, int loop) if ((loop & PV_PREV_CHECK_MASK) != 0) return false; - return READ_ONCE(prev->state) != vcpu_running; + return READ_ONCE(prev->state) != vcpu_running || + vcpu_is_preempted(prev->cpu); } /*