Hi! On 1/7/2025 3:39 PM, Sebastian Andrzej Siewior wrote:
On 2024-12-20 14:18:43 [+0100], Florian Paul Schmidt wrote:
[...]
The backtrace appears long but everything up to folios_put_refs() appears preemtible. Then there is the interrupt handler. This looks okay.
That was my impression as well. Nothing really surprising (at least for my limited knowledge in these matters.)
Based on this trace, I don't see a section which disables preemption/ interrupts and be the reason for the interrupt happening. One thing that could delay your doing are small caches. Then there is looking within the system: An inaccurate/ low resolution clocksource and/ or timer device.
I will look into these. Thanks for the pointers! Kind regards, FPS -- https://blog.dfdx.eu
