On Sat, 22 Feb 2020, Wen Yang wrote: > We also observed that in this scenario, CONFIG_SLUB_CPU_PARTIAL is turned > on by default, and count_partial() is useless because the returned number > is far from the reality. Well its not useless. Its just not counting the partial objects in per cpu partial slabs. Those are counted by a different counter it. > Therefore, we can simply return 0, then nr_free is also 0, and eventually > active_objects == total_objects. We do not introduce any regression, and > it's preferable to show the unrealistic uniform 100% slab utilization > rather than some very high but incorrect value. I suggest that you simply use the number of partial slabs and multiply them by the number of objects in a slab and use that as a value. Both values are readily available via /sys/kernel/slab/<...>/ You dont need a patch to do that.
