quoted

ms granularity seems very coarse grained for this. Surely
at some point of spinning you can afford a ktime_get? But ok.

We are reading time when we are at the head of the (main) queue, but
don’t have the lock yet. Not sure about the latency of ktime_get(), but
anything reasonably fast but not necessarily precise should work.

Actually cpu_clock / sched_clock (see my other email). These should
be fast without corner cases and also monotonic.

quoted

Could you turn that into a moduleparm which can be changed at runtime?
Would be strange to have to reboot just to play with this parameter

Yes, good suggestion, thanks.

quoted

This would also make the code a lot shorter I guess.

So you don’t think we need the command-line parameter, just the module_param?

module_params can be changed at the command line too, so yes.

-Andi

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