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Diffstat (limited to 'include/linux/memcontrol.h')
-rw-r--r--include/linux/memcontrol.h45
1 files changed, 39 insertions, 6 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 159a0762aeaf..f512e189be5a 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -25,6 +25,11 @@ struct page_cgroup;
struct page;
struct mm_struct;
+/* Stats that can be updated by kernel. */
+enum mem_cgroup_page_stat_item {
+ MEMCG_NR_FILE_MAPPED, /* # of pages charged as file rss */
+};
+
extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
struct list_head *dst,
unsigned long *scanned, int order,
@@ -93,7 +98,7 @@ extern int
mem_cgroup_prepare_migration(struct page *page,
struct page *newpage, struct mem_cgroup **ptr);
extern void mem_cgroup_end_migration(struct mem_cgroup *mem,
- struct page *oldpage, struct page *newpage);
+ struct page *oldpage, struct page *newpage, bool migration_ok);
/*
* For memory reclaim.
@@ -121,11 +126,30 @@ static inline bool mem_cgroup_disabled(void)
return false;
}
-void mem_cgroup_update_file_mapped(struct page *page, int val);
+void mem_cgroup_update_page_stat(struct page *page,
+ enum mem_cgroup_page_stat_item idx,
+ int val);
+
+static inline void mem_cgroup_inc_page_stat(struct page *page,
+ enum mem_cgroup_page_stat_item idx)
+{
+ mem_cgroup_update_page_stat(page, idx, 1);
+}
+
+static inline void mem_cgroup_dec_page_stat(struct page *page,
+ enum mem_cgroup_page_stat_item idx)
+{
+ mem_cgroup_update_page_stat(page, idx, -1);
+}
+
unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
gfp_t gfp_mask);
u64 mem_cgroup_get_limit(struct mem_cgroup *mem);
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+void mem_cgroup_split_huge_fixup(struct page *head, struct page *tail);
+#endif
+
#else /* CONFIG_CGROUP_MEM_RES_CTLR */
struct mem_cgroup;
@@ -231,8 +255,7 @@ mem_cgroup_prepare_migration(struct page *page, struct page *newpage,
}
static inline void mem_cgroup_end_migration(struct mem_cgroup *mem,
- struct page *oldpage,
- struct page *newpage)
+ struct page *oldpage, struct page *newpage, bool migration_ok)
{
}
@@ -293,8 +316,13 @@ mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p)
{
}
-static inline void mem_cgroup_update_file_mapped(struct page *page,
- int val)
+static inline void mem_cgroup_inc_page_stat(struct page *page,
+ enum mem_cgroup_page_stat_item idx)
+{
+}
+
+static inline void mem_cgroup_dec_page_stat(struct page *page,
+ enum mem_cgroup_page_stat_item idx)
{
}
@@ -311,6 +339,11 @@ u64 mem_cgroup_get_limit(struct mem_cgroup *mem)
return 0;
}
+static inline void mem_cgroup_split_huge_fixup(struct page *head,
+ struct page *tail)
+{
+}
+
#endif /* CONFIG_CGROUP_MEM_CONT */
#endif /* _LINUX_MEMCONTROL_H */