Define function for determining active/inactive balance in memory cgroup. * just use res.usage as total value and assumes total = active + inactive. * and yes, we can use mem_cgroup_get_all_zonestat(mem, MEM_CGROUP_ZSTAT_ACTIVE) Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> include/linux/memcontrol.h | 8 ++++++++ mm/memcontrol.c | 16 ++++++++++++++++ 2 files changed, 24 insertions(+) Index: linux-2.6.24-rc2-mm1/mm/memcontrol.c =================================================================== --- linux-2.6.24-rc2-mm1.orig/mm/memcontrol.c +++ linux-2.6.24-rc2-mm1/mm/memcontrol.c @@ -435,6 +435,22 @@ int mem_cgroup_calc_mapped_ratio(struct rss = mem_cgroup_read_stat(&mem->stat, MEM_CGROUP_STAT_RSS); return (rss * 100) / total; } +/* + * Uses mem_cgroup's imbalance instead of zone's lru imbalance. + * This will be used for determining whether page out routine try to free + * mapped pages or not. + */ +int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem) +{ + s64 total, active, inactive; + + /* usage is recorded in bytes */ + total = mem->res.usage >> PAGE_SHIFT; + inactive = mem_cgroup_get_all_zonestat(mem, MEM_CGROUP_ZSTAT_INACTIVE); + active = total - inactive; + + return active / (inactive + 1); +} unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, struct list_head *dst, Index: linux-2.6.24-rc2-mm1/include/linux/memcontrol.h =================================================================== --- linux-2.6.24-rc2-mm1.orig/include/linux/memcontrol.h +++ linux-2.6.24-rc2-mm1/include/linux/memcontrol.h @@ -65,6 +65,8 @@ extern void mem_cgroup_page_migration(st * For memory reclaim. */ extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem); +extern int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem); + #else /* CONFIG_CGROUP_MEM_CONT */ @@ -142,6 +144,12 @@ static inline int mem_cgroup_calc_mapped { return 0; } + +static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem) +{ + return 0; +} + #endif /* CONFIG_CGROUP_MEM_CONT */ #endif /* _LINUX_MEMCONTROL_H */ _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers