diff options
| -rw-r--r-- | mm/memcontrol.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index c7d78eca836..8d2e5c8a25b 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1782,6 +1782,34 @@ static int mem_cgroup_write(struct cgroup *cont, struct cftype *cft, return ret; } +static void memcg_get_hierarchical_limit(struct mem_cgroup *memcg, + unsigned long long *mem_limit, unsigned long long *memsw_limit) +{ + struct cgroup *cgroup; + unsigned long long min_limit, min_memsw_limit, tmp; + + min_limit = res_counter_read_u64(&memcg->res, RES_LIMIT); + min_memsw_limit = res_counter_read_u64(&memcg->memsw, RES_LIMIT); + cgroup = memcg->css.cgroup; + if (!memcg->use_hierarchy) + goto out; + + while (cgroup->parent) { + cgroup = cgroup->parent; + memcg = mem_cgroup_from_cont(cgroup); + if (!memcg->use_hierarchy) + break; + tmp = res_counter_read_u64(&memcg->res, RES_LIMIT); + min_limit = min(min_limit, tmp); + tmp = res_counter_read_u64(&memcg->memsw, RES_LIMIT); + min_memsw_limit = min(min_memsw_limit, tmp); + } +out: + *mem_limit = min_limit; + *memsw_limit = min_memsw_limit; + return; +} + static int mem_cgroup_reset(struct cgroup *cont, unsigned int event) { struct mem_cgroup *mem; @@ -1855,6 +1883,13 @@ static int mem_control_stat_show(struct cgroup *cont, struct cftype *cft, cb->fill(cb, "unevictable", unevictable * PAGE_SIZE); } + { + unsigned long long limit, memsw_limit; + memcg_get_hierarchical_limit(mem_cont, &limit, &memsw_limit); + cb->fill(cb, "hierarchical_memory_limit", limit); + if (do_swap_account) + cb->fill(cb, "hierarchical_memsw_limit", memsw_limit); + } #ifdef CONFIG_DEBUG_VM cb->fill(cb, "inactive_ratio", calc_inactive_ratio(mem_cont, NULL)); |