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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: Vj3zYYGgQ9J3+XXvfTdrMadY3qb3Ni1CO4mUCZYPiMhqybX8LYSoRF9LciA2b6r1U67h7cidJQjwcuIkG9oKcuSLVdeUI+KGneIdd5o4I3EiAFm88ZcV2CWmqBOIzfe5gA8XKa6A5KORPyitnT7Q6a7pry/m/b166/sqqe0Ifxs+90Lldg1+rFO2g5C9dpy+44qJZKvixx95EWLoa26EJ9xs2wHczbpkm4r8R3QPBF8uXAC7CmYttyHVheOmZRwmaNMEHuddDppvRZASEhAggqAj5luBQ8IaAC4/JP7RNCHVxoUsW1WZSl9O73w0KFfPkiJVnub3WWxalVI3yVJnkxmuVSxYULPB7+K+OhsgQXT/OGDISc0Q+MVRDGJwOOeRSxPvcD8N01oyup8r8FKeJOes6HBMNsDuhSFTg2mhEBe47dAXe+u9dvKfxdsixjmf X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Jul 2026 08:45:57.5940 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: c53f8d19-feb5-4ad6-8434-08dedb3affab X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb08.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ5PEPF000001F7.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB6211 Hello Andrea, On 7/6/2026 12:20 PM, Andrea Righi wrote: > find_proxy_task() can call proxy_resched_idle() while holding a mutex > wait_lock and the blocked task lock. Guard cleanup does not run until > after the return expression is evaluated. > > proxy_resched_idle() invokes scheduling-class callbacks through > put_prev_set_next_task(). Calling those callbacks with the mutex locks > held prevents them from safely inspecting the proxy chain, as doing so > may require acquiring the same locks. > > This is a preparatory change to support proxy execution in sched_ext. It > leaves the guard scope before calling proxy_resched_idle() so sched_ext > callbacks can safely inspect the proxy chain. > > Signed-off-by: Andrea Righi I don't see the need to hold anything more than the rq_lock for proxy_resched_idle(). Feel free to include: Reviewed-by: K Prateek Nayak -- Thanks and Regards, Prateek