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-rw-r--r--include/linux/memcontrol.h64
1 files changed, 61 insertions, 3 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index c5ebb32fef49..cfa91a3ca0ca 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -57,6 +57,9 @@ enum mem_cgroup_stat_index {
MEMCG_SLAB_RECLAIMABLE,
MEMCG_SLAB_UNRECLAIMABLE,
MEMCG_SOCK,
+ MEMCG_WORKINGSET_REFAULT,
+ MEMCG_WORKINGSET_ACTIVATE,
+ MEMCG_WORKINGSET_NODERECLAIM,
MEMCG_NR_STAT,
};
@@ -495,6 +498,40 @@ extern int do_swap_account;
void lock_page_memcg(struct page *page);
void unlock_page_memcg(struct page *page);
+static inline unsigned long mem_cgroup_read_stat(struct mem_cgroup *memcg,
+ enum mem_cgroup_stat_index idx)
+{
+ long val = 0;
+ int cpu;
+
+ for_each_possible_cpu(cpu)
+ val += per_cpu(memcg->stat->count[idx], cpu);
+
+ if (val < 0)
+ val = 0;
+
+ return val;
+}
+
+static inline void mem_cgroup_update_stat(struct mem_cgroup *memcg,
+ enum mem_cgroup_stat_index idx, int val)
+{
+ if (!mem_cgroup_disabled())
+ this_cpu_add(memcg->stat->count[idx], val);
+}
+
+static inline void mem_cgroup_inc_stat(struct mem_cgroup *memcg,
+ enum mem_cgroup_stat_index idx)
+{
+ mem_cgroup_update_stat(memcg, idx, 1);
+}
+
+static inline void mem_cgroup_dec_stat(struct mem_cgroup *memcg,
+ enum mem_cgroup_stat_index idx)
+{
+ mem_cgroup_update_stat(memcg, idx, -1);
+}
+
/**
* mem_cgroup_update_page_stat - update page state statistics
* @page: the page
@@ -509,14 +546,14 @@ void unlock_page_memcg(struct page *page);
* if (TestClearPageState(page))
* mem_cgroup_update_page_stat(page, state, -1);
* unlock_page(page) or unlock_page_memcg(page)
+ *
+ * Kernel pages are an exception to this, since they'll never move.
*/
static inline void mem_cgroup_update_page_stat(struct page *page,
enum mem_cgroup_stat_index idx, int val)
{
- VM_BUG_ON(!(rcu_read_lock_held() || PageLocked(page)));
-
if (page->mem_cgroup)
- this_cpu_add(page->mem_cgroup->stat->count[idx], val);
+ mem_cgroup_update_stat(page->mem_cgroup, idx, val);
}
static inline void mem_cgroup_inc_page_stat(struct page *page,
@@ -741,6 +778,27 @@ static inline bool mem_cgroup_oom_synchronize(bool wait)
return false;
}
+static inline unsigned long mem_cgroup_read_stat(struct mem_cgroup *memcg,
+ enum mem_cgroup_stat_index idx)
+{
+ return 0;
+}
+
+static inline void mem_cgroup_update_stat(struct mem_cgroup *memcg,
+ enum mem_cgroup_stat_index idx, int val)
+{
+}
+
+static inline void mem_cgroup_inc_stat(struct mem_cgroup *memcg,
+ enum mem_cgroup_stat_index idx)
+{
+}
+
+static inline void mem_cgroup_dec_stat(struct mem_cgroup *memcg,
+ enum mem_cgroup_stat_index idx)
+{
+}
+
static inline void mem_cgroup_update_page_stat(struct page *page,
enum mem_cgroup_stat_index idx,
int nr)