Re: 6.1-rt: NOHZ tick-stop error: local softirq work is pending

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On 2025-02-26 23:23:30 [+0100], Florian Bezdeka wrote:
> > NAPI threads? You have RPS enabled by any chance?
> > Would commit
> >     dad6b97702639 ("net: Allow to use SMP threads for backlog NAPI.")
> >     80d2eefcb4c84 ("net: Use backlog-NAPI to clean up the defer_list.")
> 
> With NAPI threads I meant the kernel threads driving the NAPI poll
> which can be activated by "echo 1 > /sys/class/net/$device/threaded"
> 
> RPS is build configuration wise enabled but not configured.

If RPS is disabled then this might be something else.

> As Felix already reported, backporting the mentioned commits to 6.1
> would require some manual work. Simply picking all the dependencies
> seems too much for now. Will have a look again...

Can you reproduce this on a later (more recent) kernel? What are the
steps to reproduce this?

Sebastian




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