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

[Shakeel Butt]

On Sat, Jun 04, 2022 at 04:22:09PM +0800, Qi Zheng wrote:
> There are already statistics of {pgscan,pgsteal}_kswapd and
> {pgscan,pgsteal}_direct of memcg event here, but now only 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.
> 
> Also, for forward compatibility, we still display pgscan and
> pgsteal items so that it won't break existing applications.
> 
> Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
> Acked-by: Roman Gushchin <roman.gushchin@xxxxxxxxx>
> Acked-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>

Acked-by: Shakeel Butt <shakeelb@xxxxxxxxxx>