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Wysocki" , , Vincent Guittot , Peter Zijlstra , Kevin Hilman , Pavel Machek , Len Brown , Daniel Lezcano , Maulik Shah , "Prasad Sodagudi" , Deepti Jaggi , Subject: Re: [PATCH v3 5/6] cpuidle: Respect the CPU system wakeup QoS limit for cpuidle Message-ID: <20251125054115.7y26ize7h5kqhe5l@lcpd911> References: <20251121100315.316300-1-ulf.hansson@linaro.org> <20251121100315.316300-6-ulf.hansson@linaro.org> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20251121100315.316300-6-ulf.hansson@linaro.org> X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF000023D5:EE_|PH8PR10MB6525:EE_ X-MS-Office365-Filtering-Correlation-Id: 37801e86-ed06-4d87-8f4a-08de2be54610 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|7416014|36860700013|376014|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?XJjFvBhk7zgMGEVviUcbIPC0SrFv3/ig1skhpwidp5zOQb6ms65DoERU5h7M?= =?us-ascii?Q?983QPGlI85UUcC58W3D+F3RKPY7sei2fkDOYoDIbEYSjspFdrkvDBx404oTT?= =?us-ascii?Q?HQQqMZL4DOHAyiMyQHqGn9TF5VMuvkiZdXe7vP1Tsgq1t+GU1KMKB17i4bld?= =?us-ascii?Q?k3U3sX7jRqv5cHTah0riQcYSxotMUJTje9/HIHgupZjn92/KzhCsMtdLalt8?= =?us-ascii?Q?ybFVo7pTgRbZiX1w7iFi+DBynujC80BtT4rQi+M7INC8E7kuJu+vy6mT095u?= =?us-ascii?Q?U3GzjroLMFqda50/zPwM4m3LgUh1PHQEn4JHwdWiQBk0z7ZaG96E+FRclXmD?= =?us-ascii?Q?g/ziVlQLwnPv8DN5UCH5RCSN16JZ13gfVRJyI1n6boLk7jWUFZbNgA2tr4WY?= =?us-ascii?Q?J+pF6HJhsjJXJykaszg//yiH1rlU3ylOwycNcnP7UQJlYnPeh1PcX5Q9ElL0?= =?us-ascii?Q?Li5UGu6frT8Jp9LB5uvBd/BQVE8AkzMy7nPh7oq9m1LfedYGqZ+m18L9bc+B?= =?us-ascii?Q?QFv6kUn1QcnD/sDq19nToSlC1hqz8dZZtFyozyXe+rznK70j0XJ2pGgXwtPa?= =?us-ascii?Q?8jSqlgGtF92hYrkTNtHlcdU8BPuhog53VebcR6xa7Sy4A4dFRuXBz8VJbSJA?= =?us-ascii?Q?HUz01GB2EQZUfUu8UiIiFeEcBwofDlwpVRr9+bwwhXXHSHFYTLfEa6aACd57?= =?us-ascii?Q?jBDQ3XdLGcx91I6II4YyM5T3QMwefERV/V6gD5eR+b7djExbOuA8Ag/ElM8z?= =?us-ascii?Q?VR0jN0q0yuu8vTw//K7zJmeMIMj7AEtkezvRFQ7cUhA6ZyY4YKj9QIWPYA/j?= =?us-ascii?Q?3DN/Y1ehYuEMyPHjjlZNaiQojt6+ghHqYmQURyEwqJoGzP/cokVdQnqudSBz?= =?us-ascii?Q?vLCEhPQ3Lv7SqslNoZG/CITl9ZCGBP7YN0zZ/VjgEUG7On30jOYEql+L4l3Q?= =?us-ascii?Q?h9O3hbPU9Y9lmaxF/mCH/GlLobSgYb62q6HR11lSFBoHi7ZPPUiGKFxSt54L?= =?us-ascii?Q?7Q+9kgxl19PA7B9ijJAgqEMWqecpa4n6ZMXT9/qfo2GGGryq7BdZvm8OEB0t?= =?us-ascii?Q?FyazaV8YRFSsx8tYm+mfd9FZXCoLVc3nhKbe4qFKrF5Lwc0xjxNalFiP+L9q?= =?us-ascii?Q?/XLsN0LxRpYTw4XWocwGRpcWGdhv9Web29D+tNFsrP641Mn6GnzVL5pl8UhQ?= =?us-ascii?Q?+rOXbdzZu19CkEOKRq8We9IkcTAZ92R+XXMCKDNKiZ1IZA6+jx2TS5HIdpUr?= =?us-ascii?Q?B7mjvAIB87r/2ih78Wp8qWepWTKWRNNWsoK0nNjl382XAh9OyT8+BXGf7553?= =?us-ascii?Q?GFRC/3Zh0H2jf2PlJQjzz2Deya10hLrNKXYUVngjYNZYOiPuc9sJ2AP3wztB?= =?us-ascii?Q?QciUQ0h4YLD0iEG7LHmjb1HwtayHH93j9iuCeMbSFT6o0i1TYfg84JkEp5sA?= =?us-ascii?Q?uXvGyUGS2EljYcB4pQC2oFB7cLzkmoTko/+vY7pCDjT+GympG5g2UvQF4vGF?= =?us-ascii?Q?8CdIVeVTcJRP9g08FAYZ5bSbrbrdBDswnokfO13s0luLjcUP5YdJjciEtZQN?= =?us-ascii?Q?FrU1tGXanx5XvBQmj4k=3D?= X-Forefront-Antispam-Report: CIP:198.47.23.194;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:lewvzet200.ext.ti.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(82310400026)(7416014)(36860700013)(376014)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Nov 2025 05:41:25.5535 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 37801e86-ed06-4d87-8f4a-08de2be54610 X-MS-Exchange-CrossTenant-Id: e5b49634-450b-4709-8abb-1e2b19b982b7 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=e5b49634-450b-4709-8abb-1e2b19b982b7;Ip=[198.47.23.194];Helo=[lewvzet200.ext.ti.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF000023D5.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR10MB6525 On Nov 21, 2025 at 11:03:11 +0100, Ulf Hansson wrote: > The CPU system wakeup QoS limit must be respected for the regular cpuidle > state selection. Therefore, let's extend the common governor helper > cpuidle_governor_latency_req(), to take the constraint into account. > > Signed-off-by: Ulf Hansson > --- Reviewed-by: Dhruva Gole > > Changes in v3: > - New patch. > > --- > drivers/cpuidle/governor.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/cpuidle/governor.c b/drivers/cpuidle/governor.c > index 0d0f9751ff8f..5d0e7f78c6c5 100644 > --- a/drivers/cpuidle/governor.c > +++ b/drivers/cpuidle/governor.c > @@ -111,6 +111,10 @@ s64 cpuidle_governor_latency_req(unsigned int cpu) > struct device *device = get_cpu_device(cpu); > int device_req = dev_pm_qos_raw_resume_latency(device); > int global_req = cpu_latency_qos_limit(); > + int global_wake_req = cpu_wakeup_latency_qos_limit(); > + > + if (global_req > global_wake_req) > + global_req = global_wake_req; > > if (device_req > global_req) > device_req = global_req; > -- > 2.43.0 > -- Best regards, Dhruva Gole Texas Instruments Incorporated