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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?hraWxRJRmtWdBWKToWZ2TRELrDtVCn+r0p/3c7J9fCAPHefHsqcygGZcZEje?= =?us-ascii?Q?IJTKLj2llewsP0jEGnuaXEI2Ia/Ayi5J3LLq+dqV0dTEnyqvHrkdThoERBrA?= =?us-ascii?Q?9P5DBEQPl5ZlfvXxfKGqS973KGz6crGMhnve9w+RcSG+f4Sk4UOWnin6TGm+?= =?us-ascii?Q?leNca/UtneRWqyx6jbD8MX34IuaF0iKl1vtG0YxcwL1IfNi0KcHSnQNfNeIm?= =?us-ascii?Q?grfj/hHr+f0X3cmwtOhSPb8cS6MukpPkTigezuU0JH+D3lnh+ghlufRcRCzS?= =?us-ascii?Q?84eYfAbedHS54Qu75iqxmT3ZgJIVQVBCaei6ZQEebLZ8qKgMnQpFo6AnxNlr?= =?us-ascii?Q?4eP2Z+h3LhZCpiFAMtOz0Tbr6IOy3cdREz4ay3KC9meoxHEoV2b586CTSjnU?= =?us-ascii?Q?8M6ALXaifsjI1u804hZWqKwWWTtwfVlX6yT3lEu+e1ScPDoikFIlFFicyE4W?= =?us-ascii?Q?RhNDNoJhi1f093OCQYmAsDo0/KlTk845tPHuAWZ12IuA5OQ14MPhCp3MAOAW?= =?us-ascii?Q?MNhNUkrROdUMIJYq3raLLl3A2ZZ5Ob/oa8o0mFhRfY3iHdwB3OFvEF5K81it?= =?us-ascii?Q?rtc9oKWaxPUNxx/n7YJU1QnKPpbZDQ56e2WEUplb7SJz+tVSqY/jt3i4C/ZG?= =?us-ascii?Q?svUy60paRXGuyb8DcXyyHMIjttYsiGefCKfyvh29GZT+qyfiSmqtphksXdYU?= =?us-ascii?Q?WrSS5+I6hb2P/lxPCRV2YfZIJtrrWec/Mcg0+HIDG1WPprutuwqlUpPy+5Xf?= =?us-ascii?Q?i7C7b+xc5+dgErpQaqgmfNSpAklu+wZSuhmL9oSBDWtzcRY+3P3F0ry+VuFR?= =?us-ascii?Q?IkY7+U1WIjW22zxE+V44Ss5kGD9RwcpDUBGsaLN1zotdx3hba8wty7i+rrFN?= =?us-ascii?Q?RlAw7835fYl7r1fHm8Z+0QmsYBMki6iX7ACVwn9wpwdV+VauddoNELEKHbX7?= =?us-ascii?Q?spWWl16MaS5+bBSp9e39K8geLzKna3/f1FP9sSimQQC4mFqvrIx8PRgudwwh?= =?us-ascii?Q?I9UwIwPh49uxe7IaVhAaNTSnRqvE9T7C6Q4vAPxBG4ODlK8eSLrnBenYZP9K?= =?us-ascii?Q?TKbyUUvbmkKkHlydGKywsuNEjhGb1O6l6u7LOvlzYuSUywaW11zzfHaxvYaY?= =?us-ascii?Q?ydA+Fa8HdepzOkw3U5Szn+Wv10gK6unoam3DMMxo/maoRLQ5iFVz9LjCAe0F?= =?us-ascii?Q?jLxiv6Jwf5X7MfwuRr9W+2HOeFrENJjoPQOUiT8cdpU6zLFFRHkT1xaMKJlq?= =?us-ascii?Q?HW+SHmWilC1vEGOK+4NyqR6X3TZ+PL6anxz6vjd0btQHzrnh4bwnHxtBU4Gx?= =?us-ascii?Q?pmNpSp/siXjfSa8l2tE+dM98cZ7WMATICMUn0Z6xBMH+fyme0CB8PgsfyrND?= =?us-ascii?Q?8YGal010eZdCYJuPzHamUfaCED3AfKJDOZgJ/qvhCLvkexNW2C3c58Ke6fMG?= =?us-ascii?Q?SmKC0RtKQh6sI0mTLYeRcWHknlMeMmPe6ug7+8uXcIsxleFjVrgvKBl1Xyff?= =?us-ascii?Q?oHUkBM8qmuZnKMXd4AQnDlkpA/e8AEZ9bLHeO8cPv/fymdIs/HzS4gGgJNnb?= =?us-ascii?Q?O3yggOt2r8iA7fMk0bpQqnQ/p6gzN9A0QqbYmjhooItBb8G2MAmUglKO0Bx+?= =?us-ascii?Q?02NNL9IBCDnQJK4Kei4tiDFJGDSLaxgF3cZyKEyzVaSNsQGhXvK7DcygVDPi?= =?us-ascii?Q?PYAIvw=3D=3D?= X-OriginatorOrg: concurrent-rt.com X-MS-Exchange-CrossTenant-Network-Message-Id: 990674da-4020-4035-8bf7-08d9adf16527 X-MS-Exchange-CrossTenant-AuthSource: DU2PR09MB5342.eurprd09.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Nov 2021 19:50:56.5312 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 6cce74a3-3975-45e0-9893-b072988b30b6 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: byyjPlaLlZb/e71etgrbKBPvuku1NrCOk9AUxb3RSYQsVtcmi81dVbA8jzLrTgEpY3NFViZgkF5DLflXjfgNCgt/+UCCks2tb3dT6zS+S0U= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DU2PR09MB5359 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Nov 16, 2021 at 04:39:24PM -0500, Steven Rostedt wrote: > On Tue, 16 Nov 2021 22:02:49 +0100 > Sebastian Andrzej Siewior wrote: > > > On 2021-11-16 15:25:34 [-0500], Steven Rostedt wrote: > > > I'm looking to see what needs to be added to 5.10-rt. Is there a particular > > > fix in one of the 5.x-rt trees (x > 10) that I can pull from? Or is this > > > only an issue with 5.10 and below? > > > > I have this: > > https://lore.kernel.org/all/20211026114100.2593433-1-bigeasy@linutronix.de > > > > pending vs upstream and I *think* more than just that one (2/9 from the > > series) needs to be backported here. We do have 1/9 differently in 5.10, > > not sure about 4/9. > > I would love more feedback here from people and I tried to motivate Joe > > to provide some. Clark was so nice to test these patches and provide > > feedback. My i915 does not trigger all the code paths I'm touching > > there. > > > > If you think that 2/9 is obvious enough, please go ahead. If you start > > touching that irq_work area then you might also want to pick > > 810979682ccc9 ("irq_work: Allow irq_work_sync() to sleep if irq_work() no IRQ support.") > > b4c6f86ec2f64 ("irq_work: Handle some irq_work in a per-CPU thread on PREEMPT_RT") > > 09089db79859c ("irq_work: Also rcuwait for !IRQ_WORK_HARD_IRQ on PREEMPT_RT") > > > > which made their way into v5.16-rc1. > > > > I have a few boxes with i915, that maybe could help in testing. > > I'll take a look. > > -- Steve Hi Steve, Sebastian, I was on a no-Internet no-News vacation for the past week, that is why I haven't responded. Sorry. In any case my test stand suddenly started working, for no reason that I can see, and so, for now, I have not been able to continue my testing. I will keep poking at it from time to time, see if I can get the issue to come back. Joe