On 2025-02-20 11:54:00 [-0500], Steven Rostedt wrote:
> >      kworker/0:5-88      [000] D.Zf2   211.983391: igbvf_reset_L14: 
> > (igbvf_reset+0x62/0x120 [igbvf])
> >      kworker/0:5-88      [000] .N...   211.983396: igbvf_reset_L16: 
> > (igbvf_reset+0x7b/0x120 [igbvf])
…
> > (Except in line 6 where it show 'f', which seems to be an unrelated issue)
> 
> But it appears to be consistent.
> 
> Let me go and add some probes and see what they show. The output you gave
> me that I requested didn't show anything unusual.

Since I just noticed that you posted the patches, did you find anything?
From looking at it, if we preemption at 0, migrate disable at 3 then a
substraction of one would underflow the preemption counter to f and
migrate disable to 2. But based on code inspection mg should be at 1.
And this does not explain where D & Z is coming from.

> -- Steve

Sebastian

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