pá 17. 1. 2025 v 16:29 odesílatel Steven Rostedt [off-list ref] napsal:

Hmm, the timerlat event could probably get access to a trigger to allow it
to do the work in the kernel like what the 'hist' triggers do. We can
extend on that.

If we only need to count the numbers, that would be a perfect
solution: use the hist trigger in place of the BPF program (no need to
reinvent the wheel!). I'll have to look at exactly what we need.

The reason I haven't written a BPF program yet, is because when I feel
there's a useful operation that can be done, I just extend ftrace to do it
;-)

I used to work with BPF, so I usually think of a BPF solution first,
then I think about whether I can replace the BPF part :D

Tomas