From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C0AE1C43331 for ; Fri, 3 Apr 2020 19:05:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8998420719 for ; Fri, 3 Apr 2020 19:05:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="fcP66OMr" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728329AbgDCTFw (ORCPT ); Fri, 3 Apr 2020 15:05:52 -0400 Received: from aserp2120.oracle.com ([141.146.126.78]:35516 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726087AbgDCTFv (ORCPT ); Fri, 3 Apr 2020 15:05:51 -0400 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 033J3efK010886; Fri, 3 Apr 2020 19:05:33 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=date : from : to : cc : subject : message-id : references : mime-version : content-type : in-reply-to; s=corp-2020-01-29; bh=OA5jJPClOx29aTOMe3lvmGw9pgRUlGByEeSa9X2kEVU=; b=fcP66OMrliNgEd8OP1mK3ULC4u1v/DrkpC+N76uTZriLgYlRWl67mn3tnPD+FGNeSZhM KX+OyZ+fMMFrymn1ee8FyuIwGN3cU0YJFxEDq4BZdM0J59XznisrQ1TAk81Xrzt9tbuX vorpl0qj2NqEXN5KJdyzfDWAEDdLhhcmDDgOz3KDUEqWw8Lg3djNOhYQOasVobskBf4U 3iGJT5Ytz2IFjDZxlFADaRdYdm+TLyK00zuxmFank5UGY6WUu/AzfPKKaipXqD2waDrz eV+6s3qX3AZR9st8EX1x6NzE3DpdOSk0I7OdekXk8jqayhTknwq18aY5XxMNTCyGapjY 2A== Received: from aserp3030.oracle.com (aserp3030.oracle.com [141.146.126.71]) by aserp2120.oracle.com with ESMTP id 303yunnbrg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 03 Apr 2020 19:05:33 +0000 Received: from pps.filterd (aserp3030.oracle.com [127.0.0.1]) by aserp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 033J2RNV171765; Fri, 3 Apr 2020 19:05:33 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by aserp3030.oracle.com with ESMTP id 302g4y0ydd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 03 Apr 2020 19:05:33 +0000 Received: from abhmp0019.oracle.com (abhmp0019.oracle.com [141.146.116.25]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 033J5VaR014026; Fri, 3 Apr 2020 19:05:31 GMT Received: from ca-dmjordan1.us.oracle.com (/10.211.9.48) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 03 Apr 2020 12:05:31 -0700 Date: Fri, 3 Apr 2020 15:05:51 -0400 From: Daniel Jordan To: Sebastian Andrzej Siewior Cc: Daniel Jordan , kernel test robot , Thomas Gleixner , Ingo Molnar , "Peter Zijlstra (Intel)" , linux-kernel@vger.kernel.org, LKP , Tejun Heo , Lai Jiangshan Subject: Re: [PATCH v2] workqueue: Remove the warning in wq_worker_sleeping() Message-ID: <20200403190551.mntw6ydtqysaoipu@ca-dmjordan1.us.oracle.com> References: <20200327074308.GY11705@shao2-debian> <20200327175350.rw5gex6cwum3ohnu@linutronix.de> <20200327232959.rpylymw2edhtxuwr@linutronix.de> <20200403174500.75rwuijdri5ewl5c@ca-dmjordan1.us.oracle.com> <20200403182502.woqrxpydt3n6l6ie@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200403182502.woqrxpydt3n6l6ie@linutronix.de> User-Agent: NeoMutt/20180716 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9580 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 bulkscore=0 suspectscore=0 mlxscore=0 spamscore=0 malwarescore=0 mlxlogscore=912 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2004030154 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9580 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 lowpriorityscore=0 malwarescore=0 adultscore=0 priorityscore=1501 mlxlogscore=967 bulkscore=0 suspectscore=0 mlxscore=0 spamscore=0 impostorscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2004030154 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 03, 2020 at 08:25:02PM +0200, Sebastian Andrzej Siewior wrote: > On 2020-04-03 13:45:00 [-0400], Daniel Jordan wrote: > > Why would preemption prevent it? Interrupts are still enabled. > > > > What am I missing? :-) > > Preemption is disabled which means no other task is allowed to be > scheduled. Aha, "preempt_count() > 1" in kvm_async_pf_task_wait(). Thanks. From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============3031976384802888930==" MIME-Version: 1.0 From: Daniel Jordan To: lkp@lists.01.org Subject: Re: [PATCH v2] workqueue: Remove the warning in wq_worker_sleeping() Date: Fri, 03 Apr 2020 15:05:51 -0400 Message-ID: <20200403190551.mntw6ydtqysaoipu@ca-dmjordan1.us.oracle.com> In-Reply-To: <20200403182502.woqrxpydt3n6l6ie@linutronix.de> List-Id: --===============3031976384802888930== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On Fri, Apr 03, 2020 at 08:25:02PM +0200, Sebastian Andrzej Siewior wrote: > On 2020-04-03 13:45:00 [-0400], Daniel Jordan wrote: > > Why would preemption prevent it? Interrupts are still enabled. > > = > > What am I missing? :-) > = > Preemption is disabled which means no other task is allowed to be > scheduled. Aha, "preempt_count() > 1" in kvm_async_pf_task_wait(). Thanks. --===============3031976384802888930==--