mm: memcontrol: report slab usage in cgroup2 memory.stat

[linux-2.6-block.git] / include / linux / memcontrol.h

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index f0c4bec6565bf6f69fbb8ad98230515dc3479b8f..e7af4834ffea74ef3d7bc059b2a8784a09467f86 100644 (file)
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -53,6 +53,8 @@ enum mem_cgroup_stat_index {
        MEM_CGROUP_STAT_NSTATS,
        /* default hierarchy stats */
        MEMCG_SOCK = MEM_CGROUP_STAT_NSTATS,
+       MEMCG_SLAB_RECLAIMABLE,
+       MEMCG_SLAB_UNRECLAIMABLE,
        MEMCG_NR_STAT,
 };
 
@@ -883,6 +885,20 @@ static __always_inline void memcg_kmem_put_cache(struct kmem_cache *cachep)
        if (memcg_kmem_enabled())
                __memcg_kmem_put_cache(cachep);
 }
+
+/**
+ * memcg_kmem_update_page_stat - update kmem page state statistics
+ * @page: the page
+ * @idx: page state item to account
+ * @val: number of pages (positive or negative)
+ */
+static inline void memcg_kmem_update_page_stat(struct page *page,
+                               enum mem_cgroup_stat_index idx, int val)
+{
+       if (memcg_kmem_enabled() && page->mem_cgroup)
+               this_cpu_add(page->mem_cgroup->stat->count[idx], val);
+}
+
 #else
 #define for_each_memcg_cache_index(_idx)       \
        for (; NULL; )
@@ -928,6 +944,11 @@ memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp)
 static inline void memcg_kmem_put_cache(struct kmem_cache *cachep)
 {
 }
+
+static inline void memcg_kmem_update_page_stat(struct page *page,
+                               enum mem_cgroup_stat_index idx, int val)
+{
+}
 #endif /* CONFIG_MEMCG && !CONFIG_SLOB */
 
 #endif /* _LINUX_MEMCONTROL_H */