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-rw-r--r--include/linux/memcontrol.h99
1 files changed, 49 insertions, 50 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 567f12323f55..e1644a24009c 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -80,29 +80,8 @@ enum mem_cgroup_events_target {
MEM_CGROUP_NTARGETS,
};
-struct memcg_vmstats_percpu {
- /* 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 memcg_vmstats_percpu;
+struct memcg_vmstats;
struct mem_cgroup_reclaim_iter {
struct mem_cgroup *position;
@@ -185,15 +164,6 @@ struct mem_cgroup_thresholds {
struct mem_cgroup_threshold_ary *spare;
};
-#if defined(CONFIG_SMP)
-struct memcg_padding {
- char x[0];
-} ____cacheline_internodealigned_in_smp;
-#define MEMCG_PADDING(name) struct memcg_padding name
-#else
-#define MEMCG_PADDING(name)
-#endif
-
/*
* Remember four most recent foreign writebacks with dirty pages in this
* cgroup. Inode sharing is expected to be uncommon and, even if we miss
@@ -304,10 +274,10 @@ struct mem_cgroup {
spinlock_t move_lock;
unsigned long move_lock_flags;
- MEMCG_PADDING(_pad1_);
+ CACHELINE_PADDING(_pad1_);
/* memory.stat */
- struct memcg_vmstats vmstats;
+ struct memcg_vmstats *vmstats;
/* memory.events */
atomic_long_t memory_events[MEMCG_NR_MEMORY_EVENTS];
@@ -326,7 +296,7 @@ struct mem_cgroup {
struct list_head objcg_list;
#endif
- MEMCG_PADDING(_pad2_);
+ CACHELINE_PADDING(_pad2_);
/*
* set > 0 if pages under this cgroup are moving to other cgroup.
@@ -350,14 +320,20 @@ struct mem_cgroup {
struct deferred_split deferred_split_queue;
#endif
+#ifdef CONFIG_LRU_GEN
+ /* per-memcg mm_struct list */
+ struct lru_gen_mm_list mm_list;
+#endif
+
struct mem_cgroup_per_node *nodeinfo[];
};
/*
- * size of first charge trial. "32" comes from vmscan.c's magic value.
- * TODO: maybe necessary to use big numbers in big irons.
+ * size of first charge trial.
+ * TODO: maybe necessary to use big numbers in big irons or dynamic based of the
+ * workload.
*/
-#define MEMCG_CHARGE_BATCH 32U
+#define MEMCG_CHARGE_BATCH 64U
extern struct mem_cgroup *root_mem_cgroup;
@@ -444,6 +420,7 @@ static inline struct obj_cgroup *__folio_objcg(struct folio *folio)
* - LRU isolation
* - lock_page_memcg()
* - exclusive reference
+ * - mem_cgroup_trylock_pages()
*
* For a kmem folio a caller should hold an rcu read lock to protect memcg
* associated with a kmem folio from being released.
@@ -505,6 +482,7 @@ static inline struct mem_cgroup *folio_memcg_rcu(struct folio *folio)
* - LRU isolation
* - lock_page_memcg()
* - exclusive reference
+ * - mem_cgroup_trylock_pages()
*
* For a kmem page a caller should hold an rcu read lock to protect memcg
* associated with a kmem page from being released.
@@ -689,7 +667,7 @@ static inline int mem_cgroup_charge(struct folio *folio, struct mm_struct *mm,
return __mem_cgroup_charge(folio, mm, gfp);
}
-int mem_cgroup_swapin_charge_page(struct page *page, struct mm_struct *mm,
+int mem_cgroup_swapin_charge_folio(struct folio *folio, struct mm_struct *mm,
gfp_t gfp, swp_entry_t entry);
void mem_cgroup_swapin_uncharge_swap(swp_entry_t entry);
@@ -959,6 +937,23 @@ void unlock_page_memcg(struct page *page);
void __mod_memcg_state(struct mem_cgroup *memcg, int idx, int val);
+/* try to stablize folio_memcg() for all the pages in a memcg */
+static inline bool mem_cgroup_trylock_pages(struct mem_cgroup *memcg)
+{
+ rcu_read_lock();
+
+ if (mem_cgroup_disabled() || !atomic_read(&memcg->moving_account))
+ return true;
+
+ rcu_read_unlock();
+ return false;
+}
+
+static inline void mem_cgroup_unlock_pages(void)
+{
+ rcu_read_unlock();
+}
+
/* idx can be of type enum memcg_stat_item or node_stat_item */
static inline void mod_memcg_state(struct mem_cgroup *memcg,
int idx, int val)
@@ -985,15 +980,7 @@ static inline void mod_memcg_page_state(struct page *page,
rcu_read_unlock();
}
-static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, int idx)
-{
- long x = READ_ONCE(memcg->vmstats.state[idx]);
-#ifdef CONFIG_SMP
- if (x < 0)
- x = 0;
-#endif
- return x;
-}
+unsigned long memcg_page_state(struct mem_cgroup *memcg, int idx);
static inline unsigned long lruvec_page_state(struct lruvec *lruvec,
enum node_stat_item idx)
@@ -1238,7 +1225,7 @@ static inline int mem_cgroup_charge(struct folio *folio,
return 0;
}
-static inline int mem_cgroup_swapin_charge_page(struct page *page,
+static inline int mem_cgroup_swapin_charge_folio(struct folio *folio,
struct mm_struct *mm, gfp_t gfp, swp_entry_t entry)
{
return 0;
@@ -1433,6 +1420,18 @@ static inline void folio_memcg_unlock(struct folio *folio)
{
}
+static inline bool mem_cgroup_trylock_pages(struct mem_cgroup *memcg)
+{
+ /* to match folio_memcg_rcu() */
+ rcu_read_lock();
+ return true;
+}
+
+static inline void mem_cgroup_unlock_pages(void)
+{
+ rcu_read_unlock();
+}
+
static inline void mem_cgroup_handle_over_high(void)
{
}
@@ -1779,7 +1778,7 @@ static inline void count_objcg_event(struct obj_cgroup *objcg,
{
struct mem_cgroup *memcg;
- if (mem_cgroup_kmem_disabled())
+ if (!memcg_kmem_enabled())
return;
rcu_read_lock();