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mm: memcontrol: consolidate memory controller initialization

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The initialization code for the per-cpu charge stock and the soft
limit tree is compact enough to inline it into mem_cgroup_init().

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Johannes Weiner 2015-02-11 15:26:33 -08:00 committed by Linus Torvalds
parent 9c608dbe6a
commit 95a045f63d
1 changed files with 25 additions and 35 deletions
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60
mm/memcontrol.c
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@ -2138,17 +2138,6 @@ static void drain_local_stock(struct work_struct *dummy)
clear_bit(FLUSHING_CACHED_CHARGE, &stock->flags);
}
static void __init memcg_stock_init(void)
{
int cpu;
for_each_possible_cpu(cpu) {
struct memcg_stock_pcp *stock =
&per_cpu(memcg_stock, cpu);
INIT_WORK(&stock->work, drain_local_stock);
}
}
/*
* Cache charges(val) to local per_cpu area.
* This will be consumed by consume_stock() function, later.
@ -4507,28 +4496,6 @@ struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *memcg)
}
EXPORT_SYMBOL(parent_mem_cgroup);
static void __init mem_cgroup_soft_limit_tree_init(void)
{
int node;
for_each_node(node) {
struct mem_cgroup_tree_per_node *rtpn;
int zone;
rtpn = kzalloc_node(sizeof(*rtpn), GFP_KERNEL,
node_online(node) ? node : NUMA_NO_NODE);
for (zone = 0; zone < MAX_NR_ZONES; zone++) {
struct mem_cgroup_tree_per_zone *rtpz;
rtpz = &rtpn->rb_tree_per_zone[zone];
rtpz->rb_root = RB_ROOT;
spin_lock_init(&rtpz->lock);
}
soft_limit_tree.rb_tree_per_node[node] = rtpn;
}
}
static struct cgroup_subsys_state * __ref
mem_cgroup_css_alloc(struct cgroup_subsys_state *parent_css)
{
@ -5905,10 +5872,33 @@ void mem_cgroup_migrate(struct page *oldpage, struct page *newpage,
*/
static int __init mem_cgroup_init(void)
{
int cpu, node;
hotcpu_notifier(memcg_cpu_hotplug_callback, 0);
for_each_possible_cpu(cpu)
INIT_WORK(&per_cpu_ptr(&memcg_stock, cpu)->work,
drain_local_stock);
for_each_node(node) {
struct mem_cgroup_tree_per_node *rtpn;
int zone;
rtpn = kzalloc_node(sizeof(*rtpn), GFP_KERNEL,
node_online(node) ? node : NUMA_NO_NODE);
for (zone = 0; zone < MAX_NR_ZONES; zone++) {
struct mem_cgroup_tree_per_zone *rtpz;
rtpz = &rtpn->rb_tree_per_zone[zone];
rtpz->rb_root = RB_ROOT;
spin_lock_init(&rtpz->lock);
}
soft_limit_tree.rb_tree_per_node[node] = rtpn;
}
enable_swap_cgroup();
mem_cgroup_soft_limit_tree_init();
memcg_stock_init();
return 0;
}
subsys_initcall(mem_cgroup_init);