On Mon, 27 Jan 2020, Michal Koutný wrote:

> When I rerun the script with patched kernel, udev sit mostly idle (there
> were no other udev event sources). So the number can be said to drop to
> 0% CPU time / event/s.
>
> > Typically the author, but not always.  If someone else is particularly
> > motivated to get a patch merged up they can take it over.
> Christopher, do you consider resending your patch? (I second that it
> exposes the internal details (wrt cgroup caches) and I can observe the
> just reading the events by udevd wastes CPU time.)

The patch exposes details of cgroup caches? Which patch are we talking
about?