Re: [RFC PATCH 02/12] khugepaged: Generalize alloc_charge_folio()

[Christoph Lameter (Ampere)]

On Fri, 20 Dec 2024, Ryan Roberts wrote:

> > Could we move all the stats somewhere into sysfs where we can get them by
> > page order? /proc/vmstat keeps getting new counters.
>
> This is exactly what has been done already for mthp stats. They live at:
>
> /sys/kernel/mm/transparent_hugepage/hugepages-<size>kB/stats/.
>
> So there is a directory per size, and there is a file per stat.

Then lets drop all THP and huge page counters from vmstat.