Messages in this thread | | | Date | Wed, 7 May 2014 17:14:08 +0200 | From | Michal Hocko <> | Subject | Re: [patch 5/9] mm: memcontrol: use root_mem_cgroup res_counter |
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On Wed 30-04-14 16:25:39, Johannes Weiner wrote: > The root_mem_cgroup res_counter is never charged itself: there is no > limit at the root level anyway, and any statistics are generated on > demand by summing up the counters of all other cgroups. This was an > optimization to keep down costs on systems that don't create specific > cgroups, but with per-cpu charge caches the res_counter operations do > not even show up on in profiles anymore. Just remove it and simplify > the code.
It seems that only kmem and tcp thingy are left but those looks much harder and they are not directly related.
root_mem_cgroup use also seems to be correct.
I have to look at this closer and that will be no sooner than on Monday as I am off for the rest of the week. [...] -- Michal Hocko SUSE Labs
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