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Mon, 22 Jul 2024 12:21:33 +0000 Message-ID: <57e6bded-8d10-4db8-ad2e-11dfd126205f@arm.com> Date: Mon, 22 Jul 2024 13:21:31 +0100 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 3/5] firmware: arm_scmi: Track basic SCMI statistics Content-Language: en-GB To: Peng Fan , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "arm-scmi@vger.kernel.org" Cc: "sudeep.holla@arm.com" , "cristian.marussi@arm.com" References: <20240715133751.2877197-1-luke.parkin@arm.com> <20240715133751.2877197-4-luke.parkin@arm.com> From: Luke Parkin In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: LO4P123CA0548.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:319::11) To DU0PR08MB8639.eurprd08.prod.outlook.com (2603:10a6:10:401::11) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-TrafficTypeDiagnostic: DU0PR08MB8639:EE_|PA4PR08MB6176:EE_|AMS1EPF00000047:EE_|AS1PR08MB7657:EE_ X-MS-Office365-Filtering-Correlation-Id: 18c55372-0a8d-4a57-8385-08dcaa48d8f2 x-checkrecipientrouted: true NoDisclaimer: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam-Untrusted: BCL:0;ARA:13230040|366016|1800799024|376014; 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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Jul 2024 12:21:43.3282 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 18c55372-0a8d-4a57-8385-08dcaa48d8f2 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[63.35.35.123];Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: AMS1EPF00000047.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS1PR08MB7657 > Just wonder that since ftrace is there, why need this? Hi, this series aims to provide a useful debug aid for running tests on the SCMI subsystem. As you mentioned, ftrace does report some of these statistics, however DEBUG_STATISTICS will allow a programatic interface to access the count of failures, successes and an extended variety of other specific errors/statistics for automated (or manual) testing. Hope this clears things up, Luke