On Tue, Aug 24, 2010 at 6:42 PM, KAMEZAWA Hiroyuki
<kamezawa.hiroyu@jp.fujitsu.com> wrote:
quoted text
>
> Hmm, but placing css and subsystem's its own structure in different cache line
> can increase cacheline/TLB miss, I think.

My patch shouldn't affect the memory placement of any structures.
struct cgroup_subsys_state is still embedded in the per-subsystem
state.

quoted text
>
> Do we have to call alloc_css_id() in kernel/cgroup.c ?

I guess not, if no-one's using it except for memcg. The general
approach of allocating the CSS in cgroup.c rather than in every
subsystem is something that I'd like to do separately, though.

Paul
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