[lxc-devel] RFC: cgroups aware proc

[Li Zefan]

On 2014/1/5 8:12, Marian Marinov wrote:
> Happy new year guys.
> 
> I need to have /proc cgroups aware, as I want to have LXC containers that see only the resources that are given to them.
> 
> In order to do that I had to patch the kernel. I decided to start with cpuinfo, stat and interrupts and then continue
> with meminfo and loadavg.
> 
> I managed to patch the Kernel (linux 3.12.0) and make /proc/cpuinfo, /proc/stat and /proc/interrupts be cgroups aware.
> 
> Attached are the patches that make the necessary changes.
> 
> The change for /proc/cpuinfo and /proc/interrupts is currently done only for x86 arch, but I will patch the rest of the
> architectures if the style of the patches is acceptable.
> 
> Tomorrow I will check if the patches apply and build with the latest kernel.
> 

People tried to do this before, but got rejected by upstream maintainers,
and then the opinion was to do this in userspace throught FUSE.

Seems libvirt-lxc already supports containerized /proc/meminfo in this way.
See:
	http://libvirt.org/drvlxc.html