Hi, this is updated version of patch set implementing per-zone on memory cgroup.
I still uses x86_64/fake NUMA (my ia64/NUMA box is under maintainance....)
So, RFC again. (I'd like to do 3rd update in the next week.)
Major Changes from previous one.
- per-zone-lru_lock patch is added.
- all per-zone objects of memory cgroup are treated in same way.
- page migration is handled.
- restructured and cleaned up.
Todo:
- do test on "real" NUMA.
- merge YAMAMOTO-san's background page reclaim patch set on this. (If I can)
- performance measurement at some point
- more cleanup and adding meaningful comments
- confirm added logic in vmscan.c is really sane.
Overview:
All per-zone obects are put into
==
struct mem_cgroup_per_zone {
/*
* spin_lock to protect the per cgroup LRU
*/
spinlock_t lru_lock;
struct list_head active_list;
struct list_head inactive_list;
unsigned long count[NR_MEM_CGROUP_ZSTAT];
};
==
And this per-zone area is accessed by following functions.
==
mem_cgroup_zoneinfo(struct mem_cgroup *mem, int nid, int zid)
page_cgroup_zoneinfo(struct page_cgroup *pc)
==
Typical usage is following.
==
mz = page_cgroup_zoneinfo(pc);
spin_lock_irqsave(&mz->lru_lock, flags);
__mem_cgroup_add_list(pc);
spin_unlock_irqrestore(&mz->lru_lock, flags);
==
Thanks,
-Kame
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