Received: by 2002:a05:6358:3188:b0:123:57c1:9b43 with SMTP id q8csp10667656rwd; Thu, 22 Jun 2023 03:12:15 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ4CGn19RnFxZwkyS746X7FI0QngN0RApC75olecU6tHWlO9wIMKPazJEVrEPo1EEhiKknb9 X-Received: by 2002:a05:6830:16d1:b0:6b5:f08d:daf7 with SMTP id l17-20020a05683016d100b006b5f08ddaf7mr1259222otr.10.1687428734808; Thu, 22 Jun 2023 03:12:14 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1687428734; cv=pass; d=google.com; s=arc-20160816; b=zUL48Vn3zsjOGzzfgFJEs72+D4WCDUHdIskyredC8cFbcJREYIg4hPWAFB09JjU/z7 eQJ6NC8pC9ASaYBAs1aemaKipmLV4/r45xz4Y842bIGOanpq7yjTfgjiVbTnW41+Ue1j dge52aEKq5pM83hZWlf6Bh3DiLX0HlM7odgPojoJ1duE+wNlwQUA+5TLSXo8Rk/VXL2J s/ASAkQi0NLHOrvIeS1Kd8eR3uk1EN/vB32IhJsfctlpRGgtokxpbfJo1vGf7akBPE62 sFvCeu1AqtSHui3e7xsuXbnIWH/Ks3yUmXrMLYKNnuPy401XIcrfNXdrc/W7iAYWpI4r EIBQ== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:content-transfer-encoding :in-reply-to:from:references:cc:to:content-language:subject :user-agent:date:message-id:dkim-signature; bh=C1R5DOUVShpjIRnaTmmSb1HP3397S5/R4q8T3ZmIZc4=; b=HUg+nkF+pxd/WAxFiH+/xXMD5t9v9FzuPvQGup2Ur3T/qohGWxy3sB7PH8gxKfGCgW F+QZ1ZS7JMzPVyUB1fbNQbVZbCiCa11zuP8BNWxtSiUSIW4sOuWSw2ColFgQUZsNRatz nmI8Gw6sT/tHW2PODou6+83ltVwWXBvaRVx7x9lPE4iaEAIZ9wPCI7xoizFKePOws/Md F5trO/OYZl3ci9hVkucHdHIgsMFEcpbYHvfcwEALWtYigOLSvmScmtHpm24+mfQChuKF GxAy7INnNGmURf/jWqxAa0aC5R+2IHGnQEYs6gNPugNWiceDbcG0dIbYzJ70bNWc6SMW MbkQ== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b="czKpVm/y"; arc=pass (i=1 spf=pass spfdomain=amd.com dkim=pass dkdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id v2-20020a63b642000000b0055383e26612si1072586pgt.554.2023.06.22.03.11.51; Thu, 22 Jun 2023 03:12:14 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b="czKpVm/y"; arc=pass (i=1 spf=pass spfdomain=amd.com dkim=pass dkdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230097AbjFVKAI (ORCPT + 99 others); Thu, 22 Jun 2023 06:00:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229956AbjFVKAE (ORCPT ); Thu, 22 Jun 2023 06:00:04 -0400 Received: from NAM10-DM6-obe.outbound.protection.outlook.com (mail-dm6nam10on2083.outbound.protection.outlook.com [40.107.93.83]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 84ED2C6 for ; Thu, 22 Jun 2023 03:00:02 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=K1Afzg0uJNcs27IJaYSxPMAm3ECDUTWCYHt3g9ubkPuL2dJ78lMIrJIA5ajS4854MovPqbSSTMqtqIO2uHI4JuHGluUvoUIIlrCRCd0YMmOebf14nGOcMovrMaXIogTh0eLKPx0ycVKkV0OQjrsVQze7ruoLKsmibReOnfoVA3ZTx5gBt8ihZ0xNJfTYCi+rgQmtKFn1YSA+5MgHluyw1zhvPwC7vskkxNDqfWtUhmNTfsF4VH4m2ha3CqtWydsfsKZpkIQwhYaEGc8EYBtJxXoOtEyzOCxLq11JB0C1LQewgod1SePfGZGqH4Ek/LywWZwBeoJoOxeVFgYjXxRFSQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=C1R5DOUVShpjIRnaTmmSb1HP3397S5/R4q8T3ZmIZc4=; b=h8cwFa+WmH09y+lYMv4SrYBOZ8lqVh19j7Xbq75r1+uLW4aHNlCUCK4JTY+f4EJqWn3whelcq3lh4OqKwfpMZ7q6XxGvCLYbXiWpELH7hnWhZvREpCg3nvZI3l25pFQUtKw3wiV8mpZHU9V7w3SDO2TtdkStNd3csZBCIM3XbSmZOlrU1m76MCRWYHp+x8NNY6WS/NiRqaJ5ZVf9+Ag444V/XSg4xPfNRVPJSArci7/YyeDdByUvxL0ReLQmm0/PirUvliai17dXSIRuCeZHdrbZl5yH/OpwMq+HgXzvZ9WNs6ZzFkcXPEaAXl1odNzfJneqXD5AF/2+65BD+JNL+g== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=C1R5DOUVShpjIRnaTmmSb1HP3397S5/R4q8T3ZmIZc4=; b=czKpVm/yqhv4UZhEVM12VxPO2tNFRzsGu+GutRGohBzAM51jzJoWjyFwHz8F18a+lzdPI20uNQDk2h8By5t/0tnPvzcxbmpdkS5cAlcX9Hi7FC73SDHjAbsvH8azL/Mofabet8NC4W1hjFuCPglaX8/NkirO18I8eedrYMXLs0c= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=amd.com; Received: from BN8PR12MB3587.namprd12.prod.outlook.com (2603:10b6:408:43::13) by PH8PR12MB7352.namprd12.prod.outlook.com (2603:10b6:510:214::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6521.24; Thu, 22 Jun 2023 09:59:58 +0000 Received: from BN8PR12MB3587.namprd12.prod.outlook.com ([fe80::384a:95a4:8819:ee84]) by BN8PR12MB3587.namprd12.prod.outlook.com ([fe80::384a:95a4:8819:ee84%7]) with mapi id 15.20.6521.024; Thu, 22 Jun 2023 09:59:57 +0000 Message-ID: <97886df5-05bd-e28e-7cc3-1c46b460e557@amd.com> Date: Thu, 22 Jun 2023 11:59:51 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.11.0 Subject: Re: [RFC PATCH v3 2/4] drm: Create DRM_IOCTL_GET_RESET Content-Language: en-US To: Pekka Paalanen , =?UTF-8?Q?Andr=c3=a9_Almeida?= Cc: dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, kernel-dev@igalia.com, alexander.deucher@amd.com, pierre-eric.pelloux-prayer@amd.com, Simon Ser , Rob Clark , Daniel Vetter , Daniel Stone , =?UTF-8?B?J01hcmVrIE9sxaHDoWsn?= , Dave Airlie , =?UTF-8?Q?Michel_D=c3=a4nzer?= , Samuel Pitoiset , =?UTF-8?Q?Timur_Krist=c3=b3f?= , Bas Nieuwenhuizen References: <20230621005719.836857-1-andrealmeid@igalia.com> <20230621005719.836857-3-andrealmeid@igalia.com> <20230621110931.6f3c8914@eldfell> <20230622112241.70d4e941@eldfell> From: =?UTF-8?Q?Christian_K=c3=b6nig?= In-Reply-To: <20230622112241.70d4e941@eldfell> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: FR0P281CA0242.DEUP281.PROD.OUTLOOK.COM (2603:10a6:d10:af::12) To BN8PR12MB3587.namprd12.prod.outlook.com (2603:10b6:408:43::13) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8PR12MB3587:EE_|PH8PR12MB7352:EE_ X-MS-Office365-Filtering-Correlation-Id: fb98be7c-7d4e-497b-557e-08db73076f70 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BN8PR12MB3587.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230028)(4636009)(396003)(39860400002)(376002)(346002)(366004)(136003)(451199021)(316002)(83380400001)(41300700001)(7416002)(5660300002)(2906002)(8936002)(8676002)(36756003)(38100700002)(6506007)(6512007)(6666004)(186003)(6486002)(31686004)(66476007)(4326008)(66556008)(66946007)(478600001)(31696002)(110136005)(54906003)(86362001)(2616005)(43740500002)(45980500001);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?YWFCb0VXdGFscktaSER4Q0w3SDYyb1JJa01oZ1RObTJOUlhlY0hpWGw2TDNm?= =?utf-8?B?eEtOMFI2eUVIeDc3QlRyYWtRU2F0V24rS2FVeitpRWxIOWt5SUViaTNsZDVB?= =?utf-8?B?aWkrMUJ4bUNNRE5OaEJ1bXJqM09tQklXWTkyYkNXR1JSWG1YTWlqRWF1UVZ4?= =?utf-8?B?SFhHNnd3dm5vbHd6WlZuZU43OTY0eGhxcTZ5VlJZUTI5eTU4NkRHbVQrY3RJ?= =?utf-8?B?U0J2bytHWHprWTZRYm5VRDB6TDUwYk83SG9pclczNXVCK1FOb1R2NG9oc0Rn?= =?utf-8?B?RXBlWUVwc2FodEwxTSs1WGNWREk4ZzNRdSs1TGhDUHhEd0g0VXdMMytJd2E3?= =?utf-8?B?RzFjSDdKL08yN08vRVRKNjc3czBTS01MdDUwVnpkYm1aQlREcVI0N1pMM1J1?= =?utf-8?B?NnhTWlBkN1NGSUdiMXFMT2luTTNRM1lPTHVSSzlkdVY0THptTDZyak40N1JU?= =?utf-8?B?RkRPUkFQWEZDTnVsUVBjczNBOGVkb2JVL0xibU55RXdIS3FrQVdaUlhtNXds?= =?utf-8?B?U0VLNVVRdk81ZW5zZkprT25GTU5OZzhqZWRCWnVOa0JWSVpjRHFkb2VJbVM3?= =?utf-8?B?QUFBdmQ0REc5MGsvbk9FMnJVV3pqTnNuNEtMYnhwU1VCZEZnOU9hSC9lNUhv?= =?utf-8?B?TXZQR2JBbGlTbDNBanQzMEk3S3F5TlJSYytWZnYwUmpYakNpVGV1NEIrUEsw?= =?utf-8?B?QkJub0ZNdFVjSngya0JUZFJsLzRHUFBGUExGeEJGQU93RlFEYVFPVkhoMWRX?= =?utf-8?B?YnRDTUFiOFBNZUIrWC9OZUZ5R05GdWlwdTg4VmkxbGVQc2VmN0VHSWlCdmV2?= =?utf-8?B?eWlxM0lmMEFsVmU2MFh2R1VTSjlsMFNXYU00eVNnUEJ6cVRjUXFSbEF2V2xT?= =?utf-8?B?WWx4eEI3K2xMWEloY2xXcklXaUtKVFZXZmsyYWgwcjZHb1lhRkhBMHk1WjJx?= =?utf-8?B?bEtMS3FFQ29JUllERyswSFZYUmY4ZnlqbXpGOVpoK3cyd1VrenpERFhOTktH?= =?utf-8?B?V2dUV1FUc2ZMOFdheHFjaHJ1WUV6cVkvUGp1MDNkem4xQ0Y5QVphN1d4YVlz?= =?utf-8?B?RENVSkpxWlRtVVowcEdZWVRvUEFFZWU1eE9EaGVxSlVPcUp5eWx1d1hSRUhG?= =?utf-8?B?ZUxIU1g0VDVyVVpJMEtGSHdxYzhJUWF2SVBGY3l4SXBTajJzd0dPNVlwZmg4?= =?utf-8?B?OGdsMzlDWVcyUkllYWR1WDVFQWZlY2xib1hZWVN1bnFia1NkVExCKzk3dDJO?= =?utf-8?B?ekVZNVBhelRDTCtFT3ZZQmp0SUljbUtXTCtuRUFEL2k2TUpWSlZYVW5pc0Ux?= =?utf-8?B?M0xOTmVoSlB3dUZVQ1dvK1RLU0EzWDV1d1ZLRHNEa2hOQXVidmw2MEE3RjRR?= =?utf-8?B?Qm8ydHY5KzJsYWR1ZUFzQUcyRGhVUUR0NkY3V0RGZ3RmUHhwYWc5RTMydTVP?= =?utf-8?B?aGp3V0htcXRhY25yOEZaV3FFM01jMzdtV1FXc3o5ckNLenJWSFN4M3NVaC9P?= =?utf-8?B?WkpzaHhGUWZ6WmhRTXBTTGNvdFhZWWpaQTIwUHBvL2lLVVZRek1SZTRzZWRm?= =?utf-8?B?eU9TbFZMNy9aU29YMTRIWTdBTlFwd3FoSU80L1FNbGVkdGwrbzFVODFPVzR2?= =?utf-8?B?bGtPS3JVSGZodXVWUXBBSWZGWFpZbzNrRnlESGxBc09waWw0czhtUStEWEZB?= =?utf-8?B?MXV5RUl3eC8wY3BWWGxxTWhObDRCYjhBMkpNYnlnSkF0Rkw4SFcwZWJBUGNm?= =?utf-8?B?VnU2QVNyNUs5S3hndmJLaU16em91dHlDOFgwSkhYdDAvMFBVcW50NnNoVWJl?= =?utf-8?B?TnA3bkg1ZGYzVjlZMFFHc3J2M29aamhVdzhwYXFmRmZybU85R0thQUxUZGVX?= =?utf-8?B?Y0VIVVErWGs0MU56eURoSzFGOXhHalA5WTc0ZU4rUzk2M2I2QmNOaS9hbVZi?= =?utf-8?B?SEZXL2hFOVJkR2U2dmh6SEVVcTF5dCtFS2Jlbm1wWTd1ZGc1b1NOejExcUN2?= =?utf-8?B?emZWcHdVc2ZpTmJXTmoxcTFFOHNXUGg2RXhCaWZ2Zk8zU3RxdGlXZUxqRmxk?= =?utf-8?B?UnpoWnZweWdWWGJHRzN6SFE1U1ozV01QWG5NbjJLeEpONnNNamNJWE5wTGY5?= =?utf-8?B?dzJwNDRyc0FoeHd0b2NsbkFjbkRSVm9WcDhaYy9ZTUYySzFFa2FQNFY1ODFB?= =?utf-8?Q?oLNjzu5kv3D1CRX3u6ZFU1aSDrBzgPLB8uBJuarPuCwr?= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: fb98be7c-7d4e-497b-557e-08db73076f70 X-MS-Exchange-CrossTenant-AuthSource: BN8PR12MB3587.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Jun 2023 09:59:57.6740 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Ig5tjSC5Ph8ORZV0Q5wgqPdcKxJhPYIq8fG4CXEdvYDpXzFbeesQa0x/2WKtH/6Q X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB7352 X-Spam-Status: No, score=-1.2 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO,NICE_REPLY_A, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 22.06.23 um 10:22 schrieb Pekka Paalanen: > On Wed, 21 Jun 2023 13:33:56 -0300 > André Almeida wrote: > >> Em 21/06/2023 05:09, Pekka Paalanen escreveu: >>> On Tue, 20 Jun 2023 21:57:17 -0300 >>> André Almeida wrote: >>> >>>> Create a new DRM ioctl operation to get the numbers of resets for a >>>> given context. The numbers reflect just the resets that happened after >>>> the context was created, and not since the machine was booted. >>>> >>>> Create a debugfs interface to make easier to test the API without real >>>> resets. >>>> >>>> Signed-off-by: André Almeida >>>> --- >>>> drivers/gpu/drm/drm_debugfs.c | 2 ++ >>>> drivers/gpu/drm/drm_ioctl.c | 58 +++++++++++++++++++++++++++++++++++ >>>> include/drm/drm_device.h | 3 ++ >>>> include/drm/drm_drv.h | 3 ++ >>>> include/uapi/drm/drm.h | 21 +++++++++++++ >>>> include/uapi/drm/drm_mode.h | 15 +++++++++ >>>> 6 files changed, 102 insertions(+) >>> ... >>> >>>> diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h >>>> index a87bbbbca2d4..a84559aa0d77 100644 >>>> --- a/include/uapi/drm/drm.h >>>> +++ b/include/uapi/drm/drm.h >>>> @@ -1169,6 +1169,27 @@ extern "C" { >>>> */ >>>> #define DRM_IOCTL_MODE_GETFB2 DRM_IOWR(0xCE, struct drm_mode_fb_cmd2) >>>> >>>> +/** >>>> + * DRM_IOCTL_GET_RESET - Get information about device resets >>>> + * >>>> + * This operation requests from the device information about resets. It should >>>> + * consider only resets that happens after the context is created, therefore, >>>> + * the counter should be zero during context creation. >>>> + * >>>> + * dev_reset_count tells how many resets have happened on this device, and >>>> + * ctx_reset_count tells how many of such resets were caused by this context. >>>> + * >>>> + * Flags can be used to tell if a reset is in progress, and userspace should >>>> + * wait until it's not in progress anymore to be able to create a new context; >>>> + * and to tell if the VRAM is considered lost. There's no safe way to clean this >>>> + * flag so if a context see this flag set, it should be like that until the end >>>> + * of the context. >>> Is "this flag" the VRAM_LOST? Or any flag? >>> >>> Does this mean that not all resets are fatal to the context? Is there >>> any kind of reset that should not be fatal to a context? All the >>> rendering APIs seem to assume that any reset is fatal and the context >>> must be destroyed. >> I got this flag from the `AMDGPU_CTX_OP_QUERY_STATE2` operation, and >> it's used to notify that the reset was fatal for a giving context, >> although the idea of non-fatal resets seems to be a bit controversial >> for now, so I think it will be better if I leave this flag for latter >> improvements of the API. > Which flag is "this flag"? There are RESET_IN_PROGRESS and VRAM_LOST. > Both are fine by me to exist. > > I think I made a wrong conclusion here. Somehow I read that it would be > possible to have a reset happen, and if VRAM is not lost, then the > context could work again. Yeah, that's exactly what AMD tries to do. And no, I'm absolutely not keen about that idea. Regards, Christian. > Should there be some wording added to say the context is permanently > broken on any kind of reset? Or is that for UMD to decide? > > > Thanks, > pq > >>> >>>> + */ >>>> +#define DRM_IOCTL_GET_RESET DRM_IOWR(0xCF, struct drm_get_reset) >>>> + >>>> +#define DRM_RESET_IN_PROGRESS 0x1 >>>> +#define DRM_RESET_VRAM_LOST 0x2 >>> Ok, so the dmabuf lost is being communicated here, but how would a >>> userspace process know on which device a dmabuf resides on? >>> >>> Let's assume process A uses device 1 to draw, exports a dmabuf, sends >>> it to process B which imports it to device 2. Device 1 resets and loses >>> VRAM contents. How would process B notice that the dmabuf is lost when >>> it never touches device 1 itself? >>> >>>> + >>>> /* >>>> * Device specific ioctls should only be in their respective headers >>>> * The device specific ioctl range is from 0x40 to 0x9f. >>>> diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h >>>> index 43691058d28f..c3257bd1af9c 100644 >>>> --- a/include/uapi/drm/drm_mode.h >>>> +++ b/include/uapi/drm/drm_mode.h >>>> @@ -1308,6 +1308,21 @@ struct drm_mode_rect { >>>> __s32 y2; >>>> }; >>>> >>>> +/** >>>> + * struct drm_get_reset - Get information about a DRM device resets >>>> + * @ctx_id: the context id to be queried about resets >>>> + * @flags: flags >>>> + * @dev_reset_count: global counter of resets for a given DRM device >>>> + * @ctx_reset_count: of all the resets counted by this device, how many were >>>> + * caused by this context. >>>> + */ >>>> +struct drm_get_reset { >>>> + __u32 ctx_id; >>>> + __u32 flags; >>>> + __u64 dev_reset_count; >>>> + __u64 ctx_reset_count; >>>> +}; >>>> + >>>> #if defined(__cplusplus) >>>> } >>>> #endif >>> Thanks, >>> pq