Use Case

Hi guys!
What do you think about adding the percpu memory field for mem input? It's available in /proc/meminfo and can be extremely useful since some linux virtual machines can possible have some leakage related to it (link, link)
I personally noticed this issue and the only way to find you the root cause was the node-exporter since it supports this percpu memory usage metric

Expected behavior

We don't have this field in the mem input now.

Actual behavior

I believe that we can easily add an additional field to the mem plugin, I can create a PR if you are interested.

Additional info

No response