memcg: move mem_cgroup_soft_limit_tree_init to mem_cgroup_init

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / memcontrol.c

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index af4b04f..bb894b0 100644 (file)
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -6052,7 +6052,7 @@ struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *memcg)
 }
 EXPORT_SYMBOL(parent_mem_cgroup);
 
-static int mem_cgroup_soft_limit_tree_init(void)
+static void __init mem_cgroup_soft_limit_tree_init(void)
 {
        struct mem_cgroup_tree_per_node *rtpn;
        struct mem_cgroup_tree_per_zone *rtpz;
@@ -6063,8 +6063,7 @@ static int mem_cgroup_soft_limit_tree_init(void)
                if (!node_state(node, N_NORMAL_MEMORY))
                        tmp = -1;
                rtpn = kzalloc_node(sizeof(*rtpn), GFP_KERNEL, tmp);
-               if (!rtpn)
-                       goto err_cleanup;
+               BUG_ON(!rtpn);
 
                soft_limit_tree.rb_tree_per_node[node] = rtpn;
 
@@ -6074,17 +6073,6 @@ static int mem_cgroup_soft_limit_tree_init(void)
                        spin_lock_init(&rtpz->lock);
                }
        }
-       return 0;
-
-err_cleanup:
-       for_each_node(node) {
-               if (!soft_limit_tree.rb_tree_per_node[node])
-                       break;
-               kfree(soft_limit_tree.rb_tree_per_node[node]);
-               soft_limit_tree.rb_tree_per_node[node] = NULL;
-       }
-       return 1;
-
 }
 
 static struct cgroup_subsys_state * __ref
@@ -6106,8 +6094,6 @@ mem_cgroup_css_alloc(struct cgroup *cont)
        if (cont->parent == NULL) {
                int cpu;
 
-               if (mem_cgroup_soft_limit_tree_init())
-                       goto free_out;
                root_mem_cgroup = memcg;
                for_each_possible_cpu(cpu) {
                        struct memcg_stock_pcp *stock =
@@ -6850,6 +6836,7 @@ static int __init mem_cgroup_init(void)
 {
        hotcpu_notifier(memcg_cpu_hotplug_callback, 0);
        enable_swap_cgroup();
+       mem_cgroup_soft_limit_tree_init();
        return 0;
 }
 subsys_initcall(mem_cgroup_init);