From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from AM0PR83CU005.outbound.protection.outlook.com (mail-westeuropeazon11010002.outbound.protection.outlook.com [52.101.69.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D106A487A5 for ; Mon, 21 Jul 2025 09:58:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.69.2 ARC-Seal:i=3; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753091936; cv=fail; b=mFcxNs/kuIvPlb6LwaL0RAChegj1VGR5mDaL08zcMO6kt6WeFWLl11GAkLkxhc/IfOXMhDNSVWbJinXk9mLgZUdc3VweO3sDT0pBaQHRKnA8D5DBQO7gNEOOhSGeq+/2qQAxUtB71ch4ktdG1XvxVTHdIaZAvp2F6bDvcjMOTZE= ARC-Message-Signature:i=3; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753091936; c=relaxed/simple; bh=y7ok71mvyCqBdEvmB4l71lOXsy0QQbgpVPW8z7teVMo=; h=Message-ID:Date:Subject:To:Cc:References:From:In-Reply-To: Content-Type:MIME-Version; b=rR+0cVauQiuZxDf4aBDk62Lpnj6/OWn0+Du/7jCkRfsuPfh+3F+jxuhGE0Urf5+aGOlrThxQCE2Oe5RNQw3sfGDDArWz/qDsh0Y4IoCoYcpuknRMMcLhhiSlY8FSU1j1N5LangMxr+L1uEJXl5lpxAuTzD5miPmVhx/GXEJIzdU= ARC-Authentication-Results:i=3; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=Uzo/okXQ; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=Uzo/okXQ; arc=fail smtp.client-ip=52.101.69.2 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="Uzo/okXQ"; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="Uzo/okXQ" ARC-Seal: i=2; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=pass; b=tregEvnhcLYOxh+i0J/wplLryCEyFLS5YmFYAXP/M7CE8z86Ixlzr1AFymOzMf5nm+LrMUGe/kJljksPqKLZ95q00LQDVm0rI1AqjHhlss3bUDI+T5X3G5wUOMqVg95tSGZuliGPhzRAwBOK57S64xaygW+WzU6YNApWpsW3j8b0StHR3xJtSnAqV8N8NpKIrKVNFsBkW98/x0Jg9MuebrMqYVMpVxKZa5Xv41VIGpt8tgbFUVKo8CFSkCM3rHeMOI2+UhuuZdTEIMKepguEmfuiM/IgVHefuWjdev5PBTye3DxoBU2HP5djrS2+hTg9q+iPJVt95E7t+ixfZ6/LEQ== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=zxBKHJTyJq5H5WV93CZXLHOijb7vd84vAwV29LTDBPc=; b=QV9kFs35TfDcBxnoGBUKDyj9TuQUSt5O/P2yRECtZMTzswfZ/sTytSXcWpCJAovdJqSviyE/tiPSdRpUZOzTnvaxhUX7O/o4Y1gsuF1B3+L0b8eNzG9v9XQKaH0xFukgPAxfw6TnEdgjptcACmSUA83s8aEf8BMEK2TXrfjtZWEFb/DeYNdnTtfNnmxtAuRtIAg5E5At4r7lr2+c7iDXp0/0qUXCAlVzlATmsRAicvphFgK6mt57UYnqiaUtX9PhdyLZTl+04/hS090ZEV6u5jcNYDVRIhnJxBZ5JvrCIum2cPK7fOwUhvxGDvxu3ZLz/GFVJqwYBlFfJfoRNhUeuA== ARC-Authentication-Results: i=2; mx.microsoft.com 1; spf=pass (sender ip is 4.158.2.129) smtp.rcpttodomain=collabora.com smtp.mailfrom=arm.com; dmarc=pass (p=none sp=none pct=100) action=none header.from=arm.com; dkim=pass (signature was verified) header.d=arm.com; arc=pass (0 oda=1 ltdi=1 spf=[1,1,smtp.mailfrom=arm.com] dkim=[1,1,header.d=arm.com] dmarc=[1,1,header.from=arm.com]) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=arm.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=zxBKHJTyJq5H5WV93CZXLHOijb7vd84vAwV29LTDBPc=; b=Uzo/okXQPyXp3zpIjch7JFgx6HrxgN7ezUUt6seYO2oxOBR3JJV4XeItJgDJ7TFLJrnjuak7GfOapJW3k8H/GFSX4NXm7hBH6kCzeOblTu6/hmj8RgK41g9IwZB2kLxgIglfu9fjT+axZ99t2zPGCwA9o2hPr4NLqNs43WuJ5LE= Received: from DU7P189CA0022.EURP189.PROD.OUTLOOK.COM (2603:10a6:10:552::13) by PAXPR08MB7335.eurprd08.prod.outlook.com (2603:10a6:102:220::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8943.30; Mon, 21 Jul 2025 09:58:48 +0000 Received: from DU2PEPF0001E9BF.eurprd03.prod.outlook.com (2603:10a6:10:552:cafe::76) by DU7P189CA0022.outlook.office365.com (2603:10a6:10:552::13) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.8943.29 via Frontend Transport; Mon, 21 Jul 2025 09:58:48 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 4.158.2.129) smtp.mailfrom=arm.com; dkim=pass (signature was verified) header.d=arm.com;dmarc=pass action=none header.from=arm.com; Received-SPF: Pass (protection.outlook.com: domain of arm.com designates 4.158.2.129 as permitted sender) receiver=protection.outlook.com; client-ip=4.158.2.129; helo=outbound-uk1.az.dlp.m.darktrace.com; pr=C Received: from outbound-uk1.az.dlp.m.darktrace.com (4.158.2.129) by DU2PEPF0001E9BF.mail.protection.outlook.com (10.167.8.68) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.8964.20 via Frontend Transport; Mon, 21 Jul 2025 09:58:47 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=jhCeyvUSZFUs1uF1PvrFeuXy2ttBBwH0J4WC9Nf8WMM9cnxvozqszTW4fAkKOKN444Im7/bfZvzMwnzWuo+OPqIq+r4CjLbClzyItahV6S5ZWKUDiCGwiZ1vQQIfO+4p5UDWqZfHynnfKpJ0sQahJRsDHIPOcIDCNV17Pi+DzdPFwZ59wZUOFW7l3XQ/xvKHjWC0cSADmUvpH4TuwcMbXCaO4Vxn4Rah7/io6RZ2Hpji9asI20GT0KbxOumwpM5pPqQSAeiVn2jgAW3OIRUrt9OeI1eOsBL0MROvbvehazN1D7mKhmjr5a87CwOSoAWuYM/yRj5X/fwoB8um/slKhw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=zxBKHJTyJq5H5WV93CZXLHOijb7vd84vAwV29LTDBPc=; b=UeX/tl0zjNUg9FMFMhi354kTUoGE2xjusYWWLqmzbwD4OA+HJN0nja6fI07Kjf65NB+OOOGG6UedyGxm6Ts5Q48gSoDbzSFXq98M4+YmEHCxGgYAUnhAWIXB/cIF5xPpXHDpV1PYfqAA39/YHrwuTrrc4TGqFeWCXPgib2H6ba74tyXzFb9vrRrcsc4XnoBovoCMV9ac/4awXkAORXohMd85i3K6n6CxiS0LICDlSgTPV+jDHE0Qc93DcZ/F/+NZ7H7V1JJCD5f9+igmB0dAbrZA8VeQQvWLgRkr1qYx5XABoxPGW2zELFrjyvvzTu5VhZr8cNoAK9ZpnuOO3bkxFA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=arm.com; dmarc=pass action=none header.from=arm.com; dkim=pass header.d=arm.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=arm.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=zxBKHJTyJq5H5WV93CZXLHOijb7vd84vAwV29LTDBPc=; b=Uzo/okXQPyXp3zpIjch7JFgx6HrxgN7ezUUt6seYO2oxOBR3JJV4XeItJgDJ7TFLJrnjuak7GfOapJW3k8H/GFSX4NXm7hBH6kCzeOblTu6/hmj8RgK41g9IwZB2kLxgIglfu9fjT+axZ99t2zPGCwA9o2hPr4NLqNs43WuJ5LE= Authentication-Results-Original: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=arm.com; Received: from AM9PR08MB6820.eurprd08.prod.outlook.com (2603:10a6:20b:30f::8) by GVXPR08MB10716.eurprd08.prod.outlook.com (2603:10a6:150:149::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8901.25; Mon, 21 Jul 2025 09:58:15 +0000 Received: from AM9PR08MB6820.eurprd08.prod.outlook.com ([fe80::65e1:f4ac:8b74:fea0]) by AM9PR08MB6820.eurprd08.prod.outlook.com ([fe80::65e1:f4ac:8b74:fea0%4]) with mapi id 15.20.8943.024; Mon, 21 Jul 2025 09:58:14 +0000 Message-ID: <637d9eb7-9d84-4540-97c1-ff38709a2c43@arm.com> Date: Mon, 21 Jul 2025 10:58:13 +0100 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 4/7] drm/panthor: Introduce sampling sessions to handle userspace clients Content-Language: en-GB To: Steven Price , Boris Brezillon , Liviu Dudau , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: =?UTF-8?Q?Adri=C3=A1n_Larumbe?= References: <0319137f966f2dbffc54e51f7a2a3cbac837507b.1747148172.git.lukas.zapolskas@arm.com> <057bf373-7860-4b93-93c2-218adbff61a2@arm.com> From: Lukas Zapolskas In-Reply-To: <057bf373-7860-4b93-93c2-218adbff61a2@arm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: LO4P123CA0078.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:190::11) To AM9PR08MB6820.eurprd08.prod.outlook.com (2603:10a6:20b:30f::8) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-TrafficTypeDiagnostic: AM9PR08MB6820:EE_|GVXPR08MB10716:EE_|DU2PEPF0001E9BF:EE_|PAXPR08MB7335:EE_ X-MS-Office365-Filtering-Correlation-Id: 8031c986-460e-4da3-6c50-08ddc83d2fdd X-LD-Processed: f34e5979-57d9-4aaa-ad4d-b122a662184d,ExtAddr,ExtAddr x-checkrecipientrouted: true NoDisclaimer: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam-Untrusted: BCL:0;ARA:13230040|1800799024|366016|376014|921020; X-Microsoft-Antispam-Message-Info-Original: =?utf-8?B?b1ltTnVoQWtaeitnbGZqOGVrbU14TVN1VUFWUnJpZ25FbitQVXNhc1Foanc5?= =?utf-8?B?U1lIZ21ZeCtNK2tSTXFodVJZMmlGcGRyQW02dDhKbGdScUdZRUc4SUQ5TGZH?= =?utf-8?B?dlhiSm1nSnY2K0tvRTFLZFBZb0NRNFVRNmR2c2hMaDY2ZWZXbzAxeEdtTGtG?= =?utf-8?B?SWZ1NGczQnJJSHlraG1lRXFtcm9pR0N4eTdrT0tMbmhjTWNJVVpYRVNlSWRN?= =?utf-8?B?dHNucFAwcjFRcFJ1VHhyTkF3SHI5RFdqbTdwdlI2aWFrLzI1Skg5YWpORUdj?= =?utf-8?B?QTQzbzhrSUdPZkNhNXFQQjg2R1kySUltZWpVaXpZY3I5eHRaTHZ4N0NVWjlq?= =?utf-8?B?bkdqOG93L1YxZGg3RStEOUkyWXBianFuaTB5QWdneWVlOUVWa3NXWnoyaFdj?= =?utf-8?B?bjJya2ZweEk0OWNsRUQzd3M4NnhDSVNXV2RRZTlrUFJxNDFFeGM2UEZxb2ZN?= =?utf-8?B?NXlZOFExWTVLMGh3MUFtalBuSWlFUENFc3RGYUdtSUdDKzYza2Rya0ZxcW9G?= =?utf-8?B?ZGJPcy95VTZsVUJ5ZHFmb2Y0WjVIanV2Z2ZRS015Q0NsNEZHelk1dFFzZFRZ?= =?utf-8?B?dmZNVyt1Vjc3UEM3aWUvSjBSUDlwVFFFS2huYXo4aEcwZTMraTJReGJpQzNs?= =?utf-8?B?THZURDdzOWlYNjFCblNTNmZVaDlESFd6QlRDZkRQM1l3NHlzWFJlUVV1LzVJ?= =?utf-8?B?c1M5cW5iMWNaalpiWGFZQi81c0FUbFFrbkp6cjBHUjZSVE9zbWRINXk0V2VI?= =?utf-8?B?VXJuZlN2ai9oVEN1T0Ivd2xsU2ZIUFJaamNJR3hSUzBnZGYrOUpiWldXd3o4?= =?utf-8?B?VndpWEZzbzlVUDFZOUNlTUhiZ0JER3VXbGdUbDlxNWhpTDdLSkU5bVJiQklG?= =?utf-8?B?YXpMVkxIWTNSaUtkK1M0NWhaWnZLZm5aRWlOcHc3R20xZWFGYmYyK3pZTWlr?= =?utf-8?B?c3R6MFdUY0c3NUR6WXhocVFOOGdkNU5MQXp2U1JFMm11TmZxWHdJbVJKNGIw?= =?utf-8?B?b1BLVjdXbC90eklMT3ppK2FpL282V1hpaXV1bEo3T0VzZ295aGgvQmJ6ZXhi?= =?utf-8?B?dk9rSytnMzBLSXA3eDhPeDFUVE9LdnBIbjJaSGRyZWl0ZzYzUXhvQUJheGVw?= =?utf-8?B?RHdtWjFBMDdHbi9Qc2hyMG9xc25oeElqemJqRUJSdm5DMGwyNCtaUmlzT3Qv?= =?utf-8?B?MVh4U3RqQ3dZUU16QzZtVjZrQVU2Q2NKanhEdVlNdFF4Y05MeisvOURYOEFk?= =?utf-8?B?dXExdytUcEo3Z3gwYTFoUTIzbE1UUXVJbU1oNjBjaHJvZmhTcVJFM3g4alJH?= =?utf-8?B?OFh4bTU4Z1JJMDJQTS9XSjAzU0xOMk4yZTAyZ1VSdmtrU0ZHM3pxMThTRGRX?= =?utf-8?B?NE5pQko4M2FRVjhVbm1WUDBRZ1lVMHVOS0dON3gzNGdzOFo4TXhPajlNZ3VB?= =?utf-8?B?NUxWM0ErRXl2M2VQQ0k2UzhIb29mbFE1cXZUTGpqNGJKMnlNWHB4VXpEWEp6?= =?utf-8?B?cWpBMHRyTURwVzhkM2tnYlBZMVN5WW5HU1NSRDh3bkxGeVcvU01vL09XYWxG?= =?utf-8?B?ZzU4RklVaGhGY2VmK1RySlhadTRDVEhKaG1IcCtxeFU5VVBmd25vUWJzOG4z?= =?utf-8?B?c1k4RkFYSGRWbnNTSnJvM2s2NUpITmZXZ0xsd1VnSThnWjZJZUo3TVZ3Yi8r?= =?utf-8?B?K2ZKMnNwRExkSnF5M3JRM0VSU1V2M1hVTjlTbThlbGJVMkZYbEU4aUhsSDBH?= =?utf-8?B?V1dOR0kwbU9uN0lsN3RUc3F5b2RQZUI0cjk1bmQyRzJ4eEkvTTNlVTJJYm5u?= =?utf-8?B?clIwaFhVNmhZYzBBVCtDOWN5eHZPaXBST0F0YWtCeElNbDhJQjBXdXI1RVZZ?= =?utf-8?B?aENXdVlqWmN0ZUJqM1FoV2tkVWprTmx6SXRuZmppWDVMT2hadFRrd2txd3Ri?= =?utf-8?B?ejdaU1NWUTVKSUEyWkV6Qk1rRTFITGtTMkVVN050akNVWVMxSUhWeVUxQzJs?= =?utf-8?B?TmZoaEJCNktnPT0=?= X-Forefront-Antispam-Report-Untrusted: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM9PR08MB6820.eurprd08.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(366016)(376014)(921020);DIR:OUT;SFP:1101; X-MS-Exchange-Transport-CrossTenantHeadersStamped: GVXPR08MB10716 X-EOPAttributedMessage: 0 X-MS-Exchange-Transport-CrossTenantHeadersStripped: DU2PEPF0001E9BF.eurprd03.prod.outlook.com X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id-Prvs: 1ff5b369-6ab3-427a-38c6-08ddc83d1c04 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|14060799003|36860700013|82310400026|35042699022|921020; X-Microsoft-Antispam-Message-Info: =?utf-8?B?aDdzWXlBQklYNHpjVXFLeUpNa3dXTzVDQTdVQWJmUGFRK05kZUhFSDloeW1W?= =?utf-8?B?WHJKZE9UcU83aGgwTXZKSmUzSGlLdDBFM2N3aFVEOTZoVU9wSm9NYmQ4QlNK?= =?utf-8?B?bUhFNWxTTjRpbTNNYTR1VktRMFhiQ3oyaHlDZm9sR3Q2S2ZHRCtJSmlPTVdO?= =?utf-8?B?dWlNbWhzTzUzbm5mWTFOVytlZzRqb1dlYkc0VFRYR3ZaVkxERDFEVEVOS1NQ?= =?utf-8?B?ejZLSWY5bW5jNXNJem5sbzVhbDNhRHdBWlFjSUxKTjIwQTJKTTJzZkg1bms1?= =?utf-8?B?SzFvaGdvR1MrZHlaME1qWXlzd3lpaXdXNGsyWWk2b1VZUkxJZU1UMC9iaVVH?= =?utf-8?B?aTJBSWJvTW52TDI0L1N0d3dzZlI2ZjBsYm5MUU1HamFHL3JkWGR4QXJxVUVO?= =?utf-8?B?QVBTRDFaQS9nZjZ1b3BlRmVjWURuNEtHeHlqWjR3ajdYSy83OUhlb01WVVVP?= =?utf-8?B?Rnc5UXNqc2lJTzArSG12SGZUNWYwTGVIUTViNjYzR0lWTlV1aG1Qd3pIMEtV?= =?utf-8?B?VW1OZHA5M1BBNEsxWWo0SkxkZjhyeEJ4WGsvQjN5TWJLNkQ0SEl4cDMzeTY2?= =?utf-8?B?QlhNR2p5UHBOVFl6bWRPcTRpM3lUa2FoN0NBaHZUeFEwRDcrT2VRZXhJZ2U0?= =?utf-8?B?Ty84SXE2bXdYb2hLWXdwRFRJOCtnMkhycE4wRFBVeU1BRVA5V3FCZER2WStQ?= =?utf-8?B?T2FpRjcxeW5WZnVzU010RTRGWVVXMTdGb3FWcW1sRVQwQ3FERXBlUHpTTita?= =?utf-8?B?Z2dQb0VYbmxWVkVHMXd6T0hBRXcvVzc2Q09sMnhuV3lSRWhFVFcwNE9za2xZ?= =?utf-8?B?OUhwZEY5T2dONjEzT0Z1RUp4bDhVTXhHa2puUS9VcWhHQ3J3T0RQYVo3N1hK?= =?utf-8?B?cndyY3hjS3FjaEJGR0s4QTl2WGt0dGh1TFJpbG9EaDdvM2sxb0tSekVXRFRT?= =?utf-8?B?cGFHd3RkWkhkMktUYlE0NmE0MTB4TndwSkFyNzJUMTZUVW9aK2RkbFNxKytj?= =?utf-8?B?eGhzMUl3eHIydDBEWUdJOW92ckVoLzgyNlVkL3ZZcW1QeVNuM2MzOHh4NzBu?= =?utf-8?B?T0RJTE51UjJGK1ZiQ0RpU1UvMWFpSkgvUzZLanpGVklidDkwdkZkWVRFbmJ4?= =?utf-8?B?V3QwNjA2K3V6OTB3RVZhQUYrRWdvSWRoeGpLUk5UZ2FGZ0ZKT0RxNGNtL25E?= =?utf-8?B?SGh5Ujg5dStUWkdtQWF6Zmt5Znk4NFVaK0xtb2s2MmZJNDJNVENPOFM5YTkz?= =?utf-8?B?b3N3VGtnS0lsaVQ4WjdTZnhuSmZtK3RkUGRGOTRqVFlWUDNZZHppYlE1bVRv?= =?utf-8?B?eWJtZzB3d3ExSHl2QlUrQ1lTVHg0NEhud3ZPcWFIUnorajhRWWE2c29FeTBU?= =?utf-8?B?NDY4UDZRc0xyMTZoeGZieFQvaW9VRTJxME5JbHdjeFR5TDlEWDNESHNuNFhD?= =?utf-8?B?NER4bVBDOGRvTlNadzQveDcxTzFOdFdnUWFvREJLYi9LeHI4aEptZGV1R2k0?= =?utf-8?B?eDB5RmF3U3FQd1ppVmpPMUdMWkJJWmZwdVc4eEkxejhTUEJ5ay9rVFdSQmdM?= =?utf-8?B?R2pPMDcwcmUyUzYwY2o3ZVNxUXd4L1lGRWFzVmNHS29WMFFnUGJBK21mVDY4?= =?utf-8?B?Q0JieDk1RHRDWXRDaFp3V1I4dkdCWUc3TXR3SnE2ZTMvVjVXWmVZeVNFZ0Fk?= =?utf-8?B?NVlKYXU4WlFxdkk0Vlk2Qm9oNDJQQnp0M21tbC8xRTRNVmRTT2RNZzloRWdr?= =?utf-8?B?TkUvWDlIVXd3VVNXVCtvMktoQzF3OUN0aDZhY09WN0txMEJ3UTI0TXkrRWtz?= =?utf-8?B?Nzl3WlUwWktFMkZXd3RVcXVJR3hhbWpsOU96V0ZKRUVBQ0NXSlF3WW9FL0NN?= =?utf-8?B?WG9QaWhBQ1dFSTBUR2ZBZExXVVA3b1JYaVA4WHIzV3hJMk41QXc1bHNFRCs5?= =?utf-8?B?dUY1UVlzQnRXZVd5Vy9WSTMxNzF5dGVUSmE4NGJUc3BEOXp6a1ZHQlJYUkdJ?= =?utf-8?B?dlBYWHpZcExPSFZieEVhVXFESmVBZklLRG52ejdYMWtSQktFaEI0TUIyWmRH?= =?utf-8?B?NGN4Mkt6V0tjcnJVa0kzY2RpSEFaVEhXcjhTZz09?= X-Forefront-Antispam-Report: CIP:4.158.2.129;CTRY:GB;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:outbound-uk1.az.dlp.m.darktrace.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(376014)(1800799024)(14060799003)(36860700013)(82310400026)(35042699022)(921020);DIR:OUT;SFP:1101; X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Jul 2025 09:58:47.6625 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8031c986-460e-4da3-6c50-08ddc83d2fdd X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[4.158.2.129];Helo=[outbound-uk1.az.dlp.m.darktrace.com] X-MS-Exchange-CrossTenant-AuthSource: DU2PEPF0001E9BF.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PAXPR08MB7335 Hello Steve, Thanks for taking a look. Looks like my rebase wasn't great, and I missed a patch removing some of the GEM functions. Will get that fixed. Kind regards, Lukas On 20/06/2025 16:28, Steven Price wrote: > Hi Lukas, > > I was going to try testing this out, but it doesn't look functional. See > below. > > On 16/05/2025 16:49, Lukas Zapolskas wrote: > [...] >> diff --git a/drivers/gpu/drm/panthor/panthor_perf.c b/drivers/gpu/drm/panthor/panthor_perf.c >> index 9365ce9fed04..15fa533731f3 100644 >> --- a/drivers/gpu/drm/panthor/panthor_perf.c >> +++ b/drivers/gpu/drm/panthor/panthor_perf.c >> @@ -2,13 +2,177 @@ >> /* Copyright 2023 Collabora Ltd */ >> /* Copyright 2025 Arm ltd. */ >> >> -#include >> +#include >> #include >> +#include >> +#include >> >> #include "panthor_device.h" >> #include "panthor_fw.h" >> #include "panthor_perf.h" >> >> +/** >> + * PANTHOR_PERF_EM_BITS - Number of bits in a user-facing enable mask. This must correspond >> + * to the maximum number of counters available for selection on the newest >> + * Mali GPUs (128 as of the Mali-Gx15). >> + */ >> +#define PANTHOR_PERF_EM_BITS (BITS_PER_TYPE(u64) * 2) >> + >> +enum panthor_perf_session_state { >> + /** @PANTHOR_PERF_SESSION_ACTIVE: The session is active and can be used for sampling. */ >> + PANTHOR_PERF_SESSION_ACTIVE = 0, >> + >> + /** >> + * @PANTHOR_PERF_SESSION_OVERFLOW: The session encountered an overflow in one of the >> + * counters during the last sampling period. This flag >> + * gets propagated as part of samples emitted for this >> + * session, to ensure the userspace client can gracefully >> + * handle this data corruption. >> + */ >> + PANTHOR_PERF_SESSION_OVERFLOW, >> + >> + /* Must be last */ >> + PANTHOR_PERF_SESSION_MAX, >> +}; >> + >> +struct panthor_perf_enable_masks { >> + /** >> + * @mask: Array of bitmasks indicating the counters userspace requested, where >> + * one bit represents a single counter. Used to build the firmware configuration >> + * and ensure that userspace clients obtain only the counters they requested. >> + */ >> + unsigned long mask[DRM_PANTHOR_PERF_BLOCK_MAX][BITS_TO_LONGS(PANTHOR_PERF_EM_BITS)]; >> +}; >> + >> +struct panthor_perf_counter_block { >> + struct drm_panthor_perf_block_header header; >> + u64 counters[]; >> +}; > > I think something has gone rather wrong in a rebasing. This struct was > already added in patch 2. So this causes a build error (that the kernel > test robot caught too). > > [...] >> @@ -72,6 +236,122 @@ static void panthor_perf_info_init(struct panthor_device *ptdev) >> perf_info->sample_size = session_get_user_sample_size(perf_info); >> } >> >> +static struct panthor_perf_enable_masks *panthor_perf_create_em(struct drm_panthor_perf_cmd_setup >> + *setup_args) > > There's some code style mis-formatting like this - which is then fixed > up in patch 5. So it looks like you've applied fixups to the wrong commit. > > Also this series will need rebasing because there's some upstream > changes that it's now conflicting with. The base commit looks pretty > ancient now. > > Thanks, > Steve >