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Wed, 10 Feb 2021 15:34:46 +0000 Subject: Re: drm/nouneau: 5.11 cycle regression bisected to 461619f5c324 "drm/nouveau: switch to new allocator" To: Mike Galbraith , lkml Cc: nouveau@lists.freedesktop.org, Ben Skeggs , Dave Airlie References: <1d663cd74af91e23f4f24ebbdd65ef3ba72c15fc.camel@gmx.de> <43924195-c4e1-fce4-5766-aaefe2d6f766@amd.com> <2793c200beb530ed4a8ac32c5eea0f5aaa53c7e8.camel@gmx.de> <41cc52bd57a466f29ea81676d42f57a7b9da7dd8.camel@gmx.de> <5df26bda-9ff8-168f-e5a3-0bb503ffcca9@amd.com> <468ec16b-d716-5bd4-db2b-fb79e6c72a4f@amd.com> <6b2fa70c333d49dee64fa3c96cd7b7c99e8a6e9b.camel@gmx.de> From: =?UTF-8?Q?Christian_K=c3=b6nig?= Message-ID: Date: Wed, 10 Feb 2021 16:34:42 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 In-Reply-To: <6b2fa70c333d49dee64fa3c96cd7b7c99e8a6e9b.camel@gmx.de> Content-Type: text/plain; charset=iso-8859-15; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-Originating-IP: [2a02:908:1252:fb60:843:1ceb:6ae0:4a57] X-ClientProxiedBy: AM0PR10CA0057.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:20b:150::37) To MN2PR12MB3775.namprd12.prod.outlook.com (2603:10b6:208:159::19) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [IPv6:2a02:908:1252:fb60:843:1ceb:6ae0:4a57] (2a02:908:1252:fb60:843:1ceb:6ae0:4a57) by AM0PR10CA0057.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:20b:150::37) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3846.25 via Frontend Transport; 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I ssh'd in from lappy, but there was nada in dmesg. >> Yeah, that is expected. Without taking pages from the pool we leak >> memory like sieve. >> >> At least we could narrow down the problem quite a bit with that. >> >> Can you test the attached patch and see if it helps? > Yup, that seems to have fixed it all up. Another one bites the dust ;) Ah! So basically nouveau relies on that the pages are cleared. Yeah, that wasn't consitently implemented before. Some code path was clearing the page, some wasn't. Any objections that I add a Reported-and-tested-by: Mike Galbraith ? Regards, Christian. > > -Mike > 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=-10.3 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 42A21C433E0 for ; Wed, 10 Feb 2021 15:34:51 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EE35A64DDA for ; Wed, 10 Feb 2021 15:34:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EE35A64DDA Authentication-Results: mail.kernel.org; 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dkim=none (message not signed) header.d=none;redhat.com; dmarc=none action=none header.from=amd.com; Received: from MN2PR12MB3775.namprd12.prod.outlook.com (2603:10b6:208:159::19) by MN2PR12MB3790.namprd12.prod.outlook.com (2603:10b6:208:164::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3846.26; Wed, 10 Feb 2021 15:34:46 +0000 Received: from MN2PR12MB3775.namprd12.prod.outlook.com ([fe80::c1ff:dcf1:9536:a1f2]) by MN2PR12MB3775.namprd12.prod.outlook.com ([fe80::c1ff:dcf1:9536:a1f2%2]) with mapi id 15.20.3846.027; Wed, 10 Feb 2021 15:34:46 +0000 To: Mike Galbraith , lkml References: <1d663cd74af91e23f4f24ebbdd65ef3ba72c15fc.camel@gmx.de> <43924195-c4e1-fce4-5766-aaefe2d6f766@amd.com> <2793c200beb530ed4a8ac32c5eea0f5aaa53c7e8.camel@gmx.de> <41cc52bd57a466f29ea81676d42f57a7b9da7dd8.camel@gmx.de> <5df26bda-9ff8-168f-e5a3-0bb503ffcca9@amd.com> <468ec16b-d716-5bd4-db2b-fb79e6c72a4f@amd.com> <6b2fa70c333d49dee64fa3c96cd7b7c99e8a6e9b.camel@gmx.de> From: =?UTF-8?Q?Christian_K=c3=b6nig?= Message-ID: Date: Wed, 10 Feb 2021 16:34:42 +0100 User-Agent: Mozilla/5.0 (X11; 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charset="iso-8859-15"; Format="flowed" Errors-To: nouveau-bounces@lists.freedesktop.org Sender: "Nouveau" Am 10.02.21 um 16:30 schrieb Mike Galbraith: > On Wed, 2021-02-10 at 14:26 +0100, Christian K=F6nig wrote: >> Am 10.02.21 um 13:22 schrieb Mike Galbraith: >>> On Wed, 2021-02-10 at 12:44 +0100, Christian K=F6nig wrote: >>>> Please try to add a "return NULL" at the beginning of ttm_pool_type_ta= ke(). >>>> >>>> That should effectively disable using the pool. >>> That did away with the yield looping, but it doesn't take long for the >>> display to freeze. I ssh'd in from lappy, but there was nada in dmesg. >> Yeah, that is expected. Without taking pages from the pool we leak >> memory like sieve. >> >> At least we could narrow down the problem quite a bit with that. >> >> Can you test the attached patch and see if it helps? > Yup, that seems to have fixed it all up. Another one bites the dust ;) Ah! So basically nouveau relies on that the pages are cleared. Yeah, that wasn't consitently implemented before. Some code path was = clearing the page, some wasn't. Any objections that I add a Reported-and-tested-by: Mike Galbraith = ? Regards, Christian. > > -Mike > _______________________________________________ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau