On Tue, Jun 23, 2020 at 11:45:13AM -0700, Roman Gushchin wrote: > Percpu memory can represent a noticeable chunk of the total memory > consumption, especially on big machines with many CPUs. Let's track > percpu memory usage for each memcg and display it in memory.stat. > > A percpu allocation is usually scattered over multiple pages (and nodes), > and can be significantly smaller than a page. So let's add a byte-sized > counter on the memcg level: MEMCG_PERCPU_B. Byte-sized vmstat infra > created for slabs can be perfectly reused for percpu case. > > Signed-off-by: Roman Gushchin <guro@xxxxxx> > Acked-by: Dennis Zhou <dennis@xxxxxxxxxx> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
