Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754639AbcDKSVX (ORCPT ); Mon, 11 Apr 2016 14:21:23 -0400 Received: from mail-bn1on0139.outbound.protection.outlook.com ([157.56.110.139]:28971 "EHLO na01-bn1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752329AbcDKSVV (ORCPT ); Mon, 11 Apr 2016 14:21:21 -0400 X-Greylist: delayed 1091 seconds by postgrey-1.27 at vger.kernel.org; Mon, 11 Apr 2016 14:21:21 EDT From: Quinn Tran To: Joseph Salisbury CC: Dept-Eng QLA2xxx Upstream , "jejb@linux.vnet.ibm.com" , "Martin K. Petersen" , linux-scsi , linux-kernel , "hch@lst.de" , "bart.vanassche@sandisk.com" , Himanshu Madhani , "nab@linux-iscsi.org" Subject: Re: [4.5-rc4 Regression] qla2xxx: Add irq affinity notification Thread-Topic: [4.5-rc4 Regression] qla2xxx: Add irq affinity notification Thread-Index: AQHRlBdN/a0v9cGyvEmzF3qmz5nq8Z+El0UA Date: Mon, 11 Apr 2016 17:48:40 +0000 Message-ID: <32AB2218-5D39-4968-A07F-E527B0557F04@qlogic.com> References: <570BDE44.5020301@canonical.com> In-Reply-To: <570BDE44.5020301@canonical.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/0.0.0.160212 authentication-results: canonical.com; dkim=none (message not signed) header.d=none;canonical.com; dmarc=none action=none header.from=qlogic.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [198.186.0.2] x-ms-office365-filtering-correlation-id: 14818f2c-ea7a-4885-078f-08d362318479 x-microsoft-exchange-diagnostics: 1;DM2PR11MB0108;5:mGC9bMtXD1Qcg4TQGcR/g6uQtA3ZGcdZS4Mu9CZi+HmqPeIuL/jiElIuL8+rHHBj3sl6Flq4ntYvSF+e3ZGBBXb9upBM2SkY2inIr0fUwYA14X+YuRSjA6WtvYTm3q7lQqCcjUF8PpNHX2fq2xEBPA==;24:a9bIeEHaWEYlIn7thatntqu+covxt6qFfBnGbO8dhqPMmfR8AFqmilHayWv7cRQIMi3VR05NcfKHIvn3Zvxjd58A3eMJzdFLjZVJwbz2uB0=;20:28ADYxbhsg3np9RV7cdYoQSglMZk5MfDATgmGUbcvRXznWLZ8Q6TsSMgAU8JSq2HJkQTJE5TOWUcQ1V1DEf8aQHNoQocB7HBcbg/Ms3U2blzYOmXl3p0XDbYoAeAlpP3jWWV7IJ8kIm1oOObJwQwnQLfUrurCb7D+Y6dW9uOv+g= x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:DM2PR11MB0108; x-ld-processed: 0d68a1f9-1490-4d0e-8767-a87dab3ef2ba,ExtAddr x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:; x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(601004)(2401047)(5005006)(8121501046)(10201501046)(3002001);SRVR:DM2PR11MB0108;BCL:0;PCL:0;RULEID:;SRVR:DM2PR11MB0108; x-forefront-prvs: 09090B6B69 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(6009001)(377454003)(3846002)(102836003)(6116002)(586003)(1720100001)(81166005)(3660700001)(86362001)(2906002)(15650500001)(2420400007)(3280700002)(10400500002)(99286002)(36756003)(76176999)(50986999)(54356999)(83716003)(106116001)(33656002)(4001350100001)(5004730100002)(11100500001)(66066001)(10710500007)(82746002)(83506001)(15395725005)(110136002)(122556002)(15198665003)(7110500001)(189998001)(19580405001)(19580395003)(5002640100001)(77096005)(87936001)(92566002)(2950100001)(15975445007)(1096002)(4326007)(164054004)(5008740100001)(2900100001)(1220700001)(7059030)(104396002)(10090945008)(16193025007);DIR:OUT;SFP:1102;SCL:1;SRVR:DM2PR11MB0108;H:SN1PR11MB0655.namprd11.prod.outlook.com;FPR:;SPF:None;MLV:sfv;LANG:en; spamdiagnosticoutput: 1:23 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="utf-8" Content-ID: <5E7105866354CB4E8EDDA9CF68802873@namprd11.prod.outlook.com> MIME-Version: 1.0 X-OriginatorOrg: qlogic.com X-MS-Exchange-CrossTenant-originalarrivaltime: 11 Apr 2016 17:48:40.0128 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 0d68a1f9-1490-4d0e-8767-a87dab3ef2ba X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM2PR11MB0108 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id u3BILTNb004781 Content-Length: 2360 Lines: 72 Joe, How do I get access to this specific Ubuntu kernel where the bug is found? Is there stack trace/bug report that you could share? Any data would be helpful. Thanks. In the mean time, I will download 4.5 rc4 to re-verify. Regards, Quinn Tran -----Original Message----- From: Joseph Salisbury Date: Monday, April 11, 2016 at 10:26 AM To: Quinn Tran Cc: Dept-Eng QLA2xxx Upstream , "jejb@linux.vnet.ibm.com" , "Martin K. Petersen" , linux-scsi , linux-kernel , "hch@lst.de" , "bart.vanassche@sandisk.com" , Himanshu Madhani , Nicholas Bellinger Subject: [4.5-rc4 Regression] qla2xxx: Add irq affinity notification >Hello Quinn, > >A kernel bug report was opened against Ubuntu [0]. After a kernel >bisect, it was found that reverting the following commit resolved this bug: > >commit cdb898c52d1dfad4b4800b83a58b3fe5d352edde >Author: Quinn Tran >Date: Thu Dec 17 14:57:05 2015 -0500 > > qla2xxx: Add irq affinity notification > > >However, the prior commit also required the following three commits to >also be reverted: > >commit 5327c7dbd1a7fd980608f44789076a636e5ee5fc >Author: Quinn Tran >Date: Wed Feb 10 18:59:14 2016 -0500 > > qla2xxx: use TARGET_SCF_USE_CPUID flag to indiate CPU Affinity > >commit 9095adaab8c1d82707e4e9961b6ad79b62f3361b >Author: Quinn Tran >Date: Wed Feb 10 18:59:13 2016 -0500 > > target/transport: add flag to indicate CPU Affinity is observed > >commit fb3269baf4ecc2ce6d17d4eb537080035bdf6d5b >Author: Quinn Tran >Date: Thu Dec 17 14:57:06 2015 -0500 > > qla2xxx: Add selective command queuing > > > >The regression was introduced as of v4.5-rc4. > >I was hoping to get your feedback, since you are the patch author. The >dependant reverts all look like they are improving cpu affinity, which >would likely impact performance. Do you thing there is a way forward >instead of the reverts, or would it be best to submit a revert request? > > >Thanks, > >Joe > > >[0] http://pad.lv/1554003 > >