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 <[email protected]>
> Acked-by: Dennis Zhou <[email protected]>
Acked-by: Johannes Weiner <[email protected]>