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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SJ1PR11MB6083.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: a036aa6a-955b-4d87-aad4-08daf406d9b7 X-MS-Exchange-CrossTenant-originalarrivaltime: 11 Jan 2023 19:05:48.5864 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 6pu/XtGpJhFYa+vvMn0kORnQixyuiusu5WQRdPGSXIKPg9G5BILZbKV4Dsh6K/NdMOOY5jnphh0faOKjfQFlug== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA2PR11MB4971 X-OriginatorOrg: intel.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > I wasn't sure if the few ms difference is going to make much material > difference for that process. IPI's does shake things up and introduces > other overheads not related to this process. Is it just a few milli-seconds? What is the scheduler priority of the kerne= l thread you wake to perform this action? How does that compare to the priority of a RT thread? I may be wrong here, but I think an RT thread can block a kernel thread from running indefinitely. -Tony