diff options
| -rw-r--r-- | Documentation/cgroups/memory.txt | 10 | ||||
| -rw-r--r-- | mm/memcontrol.c | 17 |
2 files changed, 24 insertions, 3 deletions
diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt index 8af4ad121828..e2bc132608fd 100644 --- a/Documentation/cgroups/memory.txt +++ b/Documentation/cgroups/memory.txt @@ -573,15 +573,19 @@ an memcg since the pages are allowed to be allocated from any physical node. One of the use cases is evaluating application performance by combining this information with the application's CPU allocation. -We export "total", "file", "anon" and "unevictable" pages per-node for -each memcg. The ouput format of memory.numa_stat is: +Each memcg's numa_stat file includes "total", "file", "anon" and "unevictable" +per-node page counts including "hierarchical_<counter>" which sums up all +hierarchical children's values in addition to the memcg's own value. + +The ouput format of memory.numa_stat is: total=<total pages> N0=<node 0 pages> N1=<node 1 pages> ... file=<total file pages> N0=<node 0 pages> N1=<node 1 pages> ... anon=<total anon pages> N0=<node 0 pages> N1=<node 1 pages> ... unevictable=<total anon pages> N0=<node 0 pages> N1=<node 1 pages> ... +hierarchical_<counter>=<counter pages> N0=<node 0 pages> N1=<node 1 pages> ... -And we have total = file + anon + unevictable. +The "total" count is sum of file + anon + unevictable. 6. Hierarchy support diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 91b5d3a62059..c89072443166 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -5396,6 +5396,23 @@ static int memcg_numa_stat_show(struct cgroup_subsys_state *css, seq_putc(m, '\n'); } + for (stat = stats; stat < stats + ARRAY_SIZE(stats); stat++) { + struct mem_cgroup *iter; + + nr = 0; + for_each_mem_cgroup_tree(iter, memcg) + nr += mem_cgroup_nr_lru_pages(iter, stat->lru_mask); + seq_printf(m, "hierarchical_%s=%lu", stat->name, nr); + for_each_node_state(nid, N_MEMORY) { + nr = 0; + for_each_mem_cgroup_tree(iter, memcg) + nr += mem_cgroup_node_nr_lru_pages( + iter, nid, stat->lru_mask); + seq_printf(m, " N%d=%lu", nid, nr); + } + seq_putc(m, '\n'); + } + return 0; } #endif /* CONFIG_NUMA */ |