From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934117AbdGKTfc convert rfc822-to-8bit (ORCPT ); Tue, 11 Jul 2017 15:35:32 -0400 Received: from hqemgate15.nvidia.com ([216.228.121.64]:2307 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934019AbdGKTfF (ORCPT ); Tue, 11 Jul 2017 15:35:05 -0400 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Tue, 11 Jul 2017 12:35:04 -0700 Subject: Re: [HMM 12/15] mm/migrate: new memory migration helper for use with device memory v4 To: Jerome Glisse CC: "akpm@linux-foundation.org" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , John Hubbard , David Nellans , Mark Hairgrove , Sherry Cheung , Subhash Gutti References: <20170522165206.6284-1-jglisse@redhat.com> <20170522165206.6284-13-jglisse@redhat.com> <5f476e8c-8256-13a8-2228-a2b9e5650586@nvidia.com> <20170701005749.GA7232@redhat.com> <20170711182922.GC5347@redhat.com> <7a4478cb-7eb6-2546-e707-1b0f18e3acd4@nvidia.com> <20170711184919.GD5347@redhat.com> From: Evgeny Baskakov Message-ID: <84d83148-41a3-d0e8-be80-56187a8e8ccc@nvidia.com> Date: Tue, 11 Jul 2017 12:35:03 -0700 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: <20170711184919.GD5347@redhat.com> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 8BIT Content-Language: en-US X-Originating-IP: [172.17.163.71] X-ClientProxiedBy: HQMAIL107.nvidia.com (172.20.187.13) To HQMAIL103.nvidia.com (172.20.187.11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/11/17 11:49 AM, Jerome Glisse wrote: > > What are the symptoms ? The program just stop making any progress and you > trigger a sysrequest to dump current states of each threads ? In this > log i don't see migration_entry_wait() anymore but it seems to be waiting > on page lock so there might be 2 issues here. > > Jérôme That is correct, the program is not making any progress. The stack traces in the kernel log are produced by a "sysrq w" (blocked tasks) command. Thanks, -- Evgeny Baskakov NVIDIA From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f70.google.com (mail-pg0-f70.google.com [74.125.83.70]) by kanga.kvack.org (Postfix) with ESMTP id A6EB86810BE for ; Tue, 11 Jul 2017 15:35:05 -0400 (EDT) Received: by mail-pg0-f70.google.com with SMTP id g14so2070956pgu.9 for ; Tue, 11 Jul 2017 12:35:05 -0700 (PDT) Received: from hqemgate15.nvidia.com (hqemgate15.nvidia.com. [216.228.121.64]) by mx.google.com with ESMTPS id o33si128809plb.384.2017.07.11.12.35.04 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 11 Jul 2017 12:35:04 -0700 (PDT) Subject: Re: [HMM 12/15] mm/migrate: new memory migration helper for use with device memory v4 References: <20170522165206.6284-1-jglisse@redhat.com> <20170522165206.6284-13-jglisse@redhat.com> <5f476e8c-8256-13a8-2228-a2b9e5650586@nvidia.com> <20170701005749.GA7232@redhat.com> <20170711182922.GC5347@redhat.com> <7a4478cb-7eb6-2546-e707-1b0f18e3acd4@nvidia.com> <20170711184919.GD5347@redhat.com> From: Evgeny Baskakov Message-ID: <84d83148-41a3-d0e8-be80-56187a8e8ccc@nvidia.com> Date: Tue, 11 Jul 2017 12:35:03 -0700 MIME-Version: 1.0 In-Reply-To: <20170711184919.GD5347@redhat.com> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: quoted-printable Content-Language: en-US Sender: owner-linux-mm@kvack.org List-ID: To: Jerome Glisse Cc: "akpm@linux-foundation.org" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , John Hubbard , David Nellans , Mark Hairgrove , Sherry Cheung , Subhash Gutti On 7/11/17 11:49 AM, Jerome Glisse wrote: > > What are the symptoms ? The program just stop making any progress and you > trigger a sysrequest to dump current states of each threads ? In this > log i don't see migration_entry_wait() anymore but it seems to be waiting > on page lock so there might be 2 issues here. > > J=C3=A9r=C3=B4me That is correct, the program is not making any progress. The stack traces in the kernel log are produced by a "sysrq w" (blocked=20 tasks) command. Thanks, --=20 Evgeny Baskakov NVIDIA -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org