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charset=UTF-8 Date: Tue, 17 Feb 2026 20:04:34 +0900 Message-Id: From: "Alexandre Courbot" To: "John Hubbard" Cc: "Danilo Krummrich" , "Joel Fernandes" , "Alistair Popple" , "Eliot Courtney" , "Zhi Wang" , "Simona Vetter" , "Bjorn Helgaas" , "Miguel Ojeda" , "Alex Gaynor" , "Boqun Feng" , "Gary Guo" , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , "Benno Lossin" , "Andreas Hindborg" , "Alice Ryhl" , "Trevor Gross" , , , "LKML" , "Maneet Singh" Subject: Re: [PATCH 2/2] gpu: nova-core: improve GSP RPC debug logging with message classification References: <20260211000451.192109-1-jhubbard@nvidia.com> <20260211000451.192109-3-jhubbard@nvidia.com> In-Reply-To: <20260211000451.192109-3-jhubbard@nvidia.com> X-ClientProxiedBy: TY4P301CA0117.JPNP301.PROD.OUTLOOK.COM (2603:1096:405:37e::8) To CH2PR12MB3990.namprd12.prod.outlook.com (2603:10b6:610:28::18) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PR12MB3990:EE_|IA1PR12MB6089:EE_ X-MS-Office365-Filtering-Correlation-Id: e30bea2d-d259-455f-15a9-08de6e1457ad X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|7416014|376014|10070799003|1800799024; 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Move the receive debug log from > wait_for_msg() into receive_msg() where the message function is known. > Label all four message directions: > > GSP RPC: async send: seq# 0, function=3DGSP_SET_SYSTEM_INFO, length=3D0= x3f0 > GSP RPC: async send: seq# 1, function=3DSET_REGISTRY, length=3D0xc5 > GSP RPC: async received: seq# 0, function=3DLOCKDOWN_NOTICE, length=3D0= x51 > GSP RPC: async received: seq# 17, function=3DINIT_DONE, length=3D0x50 > GSP RPC: send: seq# 2, function=3DGET_GSP_STATIC_INFO, length=3D0x6c8 > GSP RPC: response received: seq# 2, function=3DGET_GSP_STATIC_INFO, len= gth=3D0x6c8 > > The async received seq# values are driver-counted for now. For command > responses, GSP echoes back the inner rpc.sequence that the CPU sent, so > the response seq# matches the send seq#. > > Cc: Maneet Singh > Signed-off-by: John Hubbard I took a good look at it, but still don't understand the point of this patch. On top of the two sequence numbers we already have, this adds two more that are purely driver-internal and have no relation to the GSP. Async messages and events have no sequence numbers and we cannot refer the new counters against anything, so what do they help with?