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-rw-r--r--include/linux/memcontrol.h67
1 files changed, 40 insertions, 27 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 9a02aabd0000..74910ce9a3f9 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -76,10 +76,27 @@ enum mem_cgroup_events_target {
};
struct memcg_vmstats_percpu {
- long stat[MEMCG_NR_STAT];
- unsigned long events[NR_VM_EVENT_ITEMS];
- unsigned long nr_page_events;
- unsigned long targets[MEM_CGROUP_NTARGETS];
+ /* Local (CPU and cgroup) page state & events */
+ long state[MEMCG_NR_STAT];
+ unsigned long events[NR_VM_EVENT_ITEMS];
+
+ /* Delta calculation for lockless upward propagation */
+ long state_prev[MEMCG_NR_STAT];
+ unsigned long events_prev[NR_VM_EVENT_ITEMS];
+
+ /* Cgroup1: threshold notifications & softlimit tree updates */
+ unsigned long nr_page_events;
+ unsigned long targets[MEM_CGROUP_NTARGETS];
+};
+
+struct memcg_vmstats {
+ /* Aggregated (CPU and subtree) page state & events */
+ long state[MEMCG_NR_STAT];
+ unsigned long events[NR_VM_EVENT_ITEMS];
+
+ /* Pending child counts during tree propagation */
+ long state_pending[MEMCG_NR_STAT];
+ unsigned long events_pending[NR_VM_EVENT_ITEMS];
};
struct mem_cgroup_reclaim_iter {
@@ -287,8 +304,8 @@ struct mem_cgroup {
MEMCG_PADDING(_pad1_);
- atomic_long_t vmstats[MEMCG_NR_STAT];
- atomic_long_t vmevents[NR_VM_EVENT_ITEMS];
+ /* memory.stat */
+ struct memcg_vmstats vmstats;
/* memory.events */
atomic_long_t memory_events[MEMCG_NR_MEMORY_EVENTS];
@@ -315,10 +332,6 @@ struct mem_cgroup {
atomic_t moving_account;
struct task_struct *move_lock_task;
- /* Legacy local VM stats and events */
- struct memcg_vmstats_percpu __percpu *vmstats_local;
-
- /* Subtree VM stats and events (batched updates) */
struct memcg_vmstats_percpu __percpu *vmstats_percpu;
#ifdef CONFIG_CGROUP_WRITEBACK
@@ -939,10 +952,6 @@ static inline void mod_memcg_lruvec_state(struct lruvec *lruvec,
local_irq_restore(flags);
}
-unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order,
- gfp_t gfp_mask,
- unsigned long *total_scanned);
-
void __count_memcg_events(struct mem_cgroup *memcg, enum vm_event_item idx,
unsigned long count);
@@ -1023,6 +1032,10 @@ static inline void memcg_memory_event_mm(struct mm_struct *mm,
void split_page_memcg(struct page *head, unsigned int nr);
+unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order,
+ gfp_t gfp_mask,
+ unsigned long *total_scanned);
+
#else /* CONFIG_MEMCG */
#define MEM_CGROUP_ID_SHIFT 0
@@ -1131,6 +1144,10 @@ static inline bool lruvec_holds_page_lru_lock(struct page *page,
return lruvec == &pgdat->__lruvec;
}
+static inline void lruvec_memcg_debug(struct lruvec *lruvec, struct page *page)
+{
+}
+
static inline struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *memcg)
{
return NULL;
@@ -1334,18 +1351,6 @@ static inline void mod_lruvec_kmem_state(void *p, enum node_stat_item idx,
mod_node_page_state(page_pgdat(page), idx, val);
}
-static inline
-unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order,
- gfp_t gfp_mask,
- unsigned long *total_scanned)
-{
- return 0;
-}
-
-static inline void split_page_memcg(struct page *head, unsigned int nr)
-{
-}
-
static inline void count_memcg_events(struct mem_cgroup *memcg,
enum vm_event_item idx,
unsigned long count)
@@ -1368,8 +1373,16 @@ void count_memcg_event_mm(struct mm_struct *mm, enum vm_event_item idx)
{
}
-static inline void lruvec_memcg_debug(struct lruvec *lruvec, struct page *page)
+static inline void split_page_memcg(struct page *head, unsigned int nr)
+{
+}
+
+static inline
+unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order,
+ gfp_t gfp_mask,
+ unsigned long *total_scanned)
{
+ return 0;
}
#endif /* CONFIG_MEMCG */