Messages in this thread | | | Date | Sun, 11 Dec 2011 14:11:43 -0500 | From | KOSAKI Motohiro <> | Subject | Re: How to draw values for /proc/stat |
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>>> IOW a /proc namespace coupled to cgroup scope would do what you want. >>> Now my head hurts.. >> >> Mine too. The idea is good, but too broad. Boils down to: How do you >> couple them? And none of the methods I thought about seemed to make any >> sense. >> >> If we really want to have the values in /proc being opted-in, I think >> Kamezawa's idea of a mount option is the winner so far.
> diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h > index 1b7f9d5..f0bc2e9 100644 > --- a/include/linux/cgroup.h > +++ b/include/linux/cgroup.h > @@ -158,6 +158,7 @@ enum { > * Clone cgroup values when creating a new child cgroup > */ > CGRP_CLONE_CHILDREN, > + CGRP_PROC_OVERLAY, > };
I'm not cgroup expert, but I doubt it is mount option. I suspect it's cgroup option. That's said, if we have following two directories,
/cgroup-for-virtualization /cgroup-for-resource-management
are both directory affected the overlay flag? I don't think it is not optimal. Why? we must care some system software (e.g. kvm, systemd) are using cgroup internally and we expected this trend will grow more.
So, I doubt namespace issue can be solved by such tiny patch.
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