[Buildroot] Docker missing statistics

Hi,

I am running buildroot on raspberry Pi3 and I fail to see docker statistics.
I can see CPU statistics but not memory nor network statistics.

Notes:
1. When running docker info I see the following warnings
WARNING: No memory limit support
WARNING: No swap limit support
WARNING: No kernel memory limit support
WARNING: No oom kill disable support

2.  I ran the following check script
https://raw.githubusercontent.com/moby/moby/master/contrib/check-config.sh
and the result is that there are 2 kernel flags missing
CONFIG_CGROUP_HUGETLB=y
CONFIG_AUFS_FS=y

3. I tried adding them and two more flags that I thought they might depend
on:
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y

But from some reason they are not shown during runtime.

Any ideas?
Thanks
Roy
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