Re: [PATCH bpf v3 2/2] selftests/bpf: Add test for unpinning htab with internal timer struct

On Wed, Oct 8, 2025 at 3:27 AM KaFai Wan kafai.wan@linux.dev wrote:

Add test to verify that unpinning hash tables containing internal timer structures does not trigger context warnings.

Each subtest (timer_prealloc and timer_no_prealloc) can trigger the context warning when unpinning, but the warning cannot be triggered twice within a short time interval (a HZ), which is expected behavior.

It was difficult to decipher the above paragraph. I think you're referring to throttling logic in __might_resched().

I kept it as-is while applying, but in the future either skip such low level implementation detail or expand it. Here you could have said that the error is printed by __might_resched() which prints it once a HZ.