Re: [RFC] fs/proc/meminfo: introduce Unaccounted statistic

From: Michal Hocko
Date: Thu Oct 20 2016 - 09:34:37 EST


On Thu 20-10-16 14:11:49, Vlastimil Babka wrote:
[...]
> Hi, I'm wondering if people would find this useful. If you think it is, and
> to not make performance worse, I could also make sure in proper submission
> that values are not read via global_page_state() multiple times etc...

I definitely find this information useful and hate to do the math all
the time but on the other hand this is quite fragile and I can imagine
we can easily forget to add something there and provide a misleading
information to the userspace. So I would be worried with a long term
maintainability of this.
--
Michal Hocko
SUSE Labs