Re: [PATCH] mm: memcontrol: separate {pgscan,pgsteal}_{kswapd,direct} items in memory.stat of cgroup v2

[Muchun Song]

On Fri, Jun 3, 2022 at 3:06 PM Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx> wrote:
>
> There are already statistics of {pgscan,pgsteal}_kswapd and
> {pgscan,pgsteal}_direct of memcg event here, but now the sum
> of the two is displayed in memory.stat of cgroup v2.
>
> In order to obtain more accurate information during monitoring
> and debugging, and to align with the display in /proc/vmstat,
> it better to display {pgscan,pgsteal}_kswapd and
> {pgscan,pgsteal}_direct separately.
>
> Moreover, after this modification, all memcg events can be
> printed with a combination of vm_event_name() and memcg_events().
> This allows us to create an array to traverse and print, which
> reduces redundant seq_buf_printf() codes.
>
> Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>

With Shakeel's changes.

Acked-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>