summaryrefslogtreecommitdiff
path: root/include/linux/list_lru.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/list_lru.h')
-rw-r--r--include/linux/list_lru.h43
1 files changed, 36 insertions, 7 deletions
diff --git a/include/linux/list_lru.h b/include/linux/list_lru.h
index 96def9d15b1b..aa5efd9351eb 100644
--- a/include/linux/list_lru.h
+++ b/include/linux/list_lru.h
@@ -42,7 +42,7 @@ struct list_lru_node {
spinlock_t lock;
/* global list, used for the root cgroup in cgroup aware lrus */
struct list_lru_one lru;
-#if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB)
+#ifdef CONFIG_MEMCG_KMEM
/* for cgroup aware lrus points to per cgroup lists, otherwise NULL */
struct list_lru_memcg __rcu *memcg_lrus;
#endif
@@ -51,21 +51,25 @@ struct list_lru_node {
struct list_lru {
struct list_lru_node *node;
-#if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB)
+#ifdef CONFIG_MEMCG_KMEM
struct list_head list;
+ int shrinker_id;
#endif
};
void list_lru_destroy(struct list_lru *lru);
int __list_lru_init(struct list_lru *lru, bool memcg_aware,
- struct lock_class_key *key);
+ struct lock_class_key *key, struct shrinker *shrinker);
-#define list_lru_init(lru) __list_lru_init((lru), false, NULL)
-#define list_lru_init_key(lru, key) __list_lru_init((lru), false, (key))
-#define list_lru_init_memcg(lru) __list_lru_init((lru), true, NULL)
+#define list_lru_init(lru) \
+ __list_lru_init((lru), false, NULL, NULL)
+#define list_lru_init_key(lru, key) \
+ __list_lru_init((lru), false, (key), NULL)
+#define list_lru_init_memcg(lru, shrinker) \
+ __list_lru_init((lru), true, NULL, shrinker)
int memcg_update_all_list_lrus(int num_memcgs);
-void memcg_drain_all_list_lrus(int src_idx, int dst_idx);
+void memcg_drain_all_list_lrus(int src_idx, struct mem_cgroup *dst_memcg);
/**
* list_lru_add: add an element to the lru list's tail
@@ -162,6 +166,23 @@ unsigned long list_lru_walk_one(struct list_lru *lru,
int nid, struct mem_cgroup *memcg,
list_lru_walk_cb isolate, void *cb_arg,
unsigned long *nr_to_walk);
+/**
+ * list_lru_walk_one_irq: walk a list_lru, isolating and disposing freeable items.
+ * @lru: the lru pointer.
+ * @nid: the node id to scan from.
+ * @memcg: the cgroup to scan from.
+ * @isolate: callback function that is resposible for deciding what to do with
+ * the item currently being scanned
+ * @cb_arg: opaque type that will be passed to @isolate
+ * @nr_to_walk: how many items to scan.
+ *
+ * Same as @list_lru_walk_one except that the spinlock is acquired with
+ * spin_lock_irq().
+ */
+unsigned long list_lru_walk_one_irq(struct list_lru *lru,
+ int nid, struct mem_cgroup *memcg,
+ list_lru_walk_cb isolate, void *cb_arg,
+ unsigned long *nr_to_walk);
unsigned long list_lru_walk_node(struct list_lru *lru, int nid,
list_lru_walk_cb isolate, void *cb_arg,
unsigned long *nr_to_walk);
@@ -175,6 +196,14 @@ list_lru_shrink_walk(struct list_lru *lru, struct shrink_control *sc,
}
static inline unsigned long
+list_lru_shrink_walk_irq(struct list_lru *lru, struct shrink_control *sc,
+ list_lru_walk_cb isolate, void *cb_arg)
+{
+ return list_lru_walk_one_irq(lru, sc->nid, sc->memcg, isolate, cb_arg,
+ &sc->nr_to_scan);
+}
+
+static inline unsigned long
list_lru_walk(struct list_lru *lru, list_lru_walk_cb isolate,
void *cb_arg, unsigned long nr_to_walk)
{