* increase it.
*/
static DEFINE_IDA(kmem_limited_groups);
-static int memcg_limited_groups_array_size;
+int memcg_limited_groups_array_size;
+
/*
* MIN_SIZE is different than 1, because we would like to avoid going through
* the alloc/free process all the time. In a small machine, 4 kmem-limited
return cachep->memcg_params->memcg_caches[memcg_cache_id(p->memcg)];
}
+#ifdef CONFIG_SLABINFO
+static int mem_cgroup_slabinfo_read(struct cgroup *cont, struct cftype *cft,
+ struct seq_file *m)
+{
+ struct mem_cgroup *memcg = mem_cgroup_from_cont(cont);
+ struct memcg_cache_params *params;
+
+ if (!memcg_can_account_kmem(memcg))
+ return -EIO;
+
+ print_slabinfo_header(m);
+
+ mutex_lock(&memcg->slab_caches_mutex);
+ list_for_each_entry(params, &memcg->memcg_slab_caches, list)
+ cache_show(memcg_params_to_cache(params), m);
+ mutex_unlock(&memcg->slab_caches_mutex);
+
+ return 0;
+}
+#endif
+
static int memcg_charge_kmem(struct mem_cgroup *memcg, gfp_t gfp, u64 size)
{
struct res_counter *fail_res;
return 0;
}
-int memcg_register_cache(struct mem_cgroup *memcg, struct kmem_cache *s)
+int memcg_register_cache(struct mem_cgroup *memcg, struct kmem_cache *s,
+ struct kmem_cache *root_cache)
{
size_t size = sizeof(struct memcg_cache_params);
if (!s->memcg_params)
return -ENOMEM;
- if (memcg)
+ if (memcg) {
s->memcg_params->memcg = memcg;
+ s->memcg_params->root_cache = root_cache;
+ }
return 0;
}
return NULL;
new = kmem_cache_create_memcg(memcg, name, s->object_size, s->align,
- (s->flags & ~SLAB_PANIC), s->ctor);
+ (s->flags & ~SLAB_PANIC), s->ctor, s);
if (new)
new->allocflags |= __GFP_KMEMCG;
}
mem_cgroup_get(memcg);
- new_cachep->memcg_params->root_cache = cachep;
atomic_set(&new_cachep->memcg_params->nr_pages , 0);
cachep->memcg_params->memcg_caches[idx] = new_cachep;
.trigger = mem_cgroup_reset,
.read = mem_cgroup_read,
},
+#ifdef CONFIG_SLABINFO
+ {
+ .name = "kmem.slabinfo",
+ .read_seq_string = mem_cgroup_slabinfo_read,
+ },
+#endif
#endif
{ }, /* terminate */
};
&per_cpu(memcg_stock, cpu);
INIT_WORK(&stock->work, drain_local_stock);
}
- hotcpu_notifier(memcg_cpu_hotplug_callback, 0);
} else {
parent = mem_cgroup_from_cont(cont->parent);
memcg->use_hierarchy = parent->use_hierarchy;
.use_id = 1,
};
+/*
+ * The rest of init is performed during ->css_alloc() for root css which
+ * happens before initcalls. hotcpu_notifier() can't be done together as
+ * it would introduce circular locking by adding cgroup_lock -> cpu hotplug
+ * dependency. Do it from a subsys_initcall().
+ */
+static int __init mem_cgroup_init(void)
+{
+ hotcpu_notifier(memcg_cpu_hotplug_callback, 0);
+ return 0;
+}
+subsys_initcall(mem_cgroup_init);
+
#ifdef CONFIG_MEMCG_SWAP
static int __init enable_swap_account(char *s)
{