hugetlb/cgroup: add charge/uncharge routines for hugetlb cgroup

[deliverable/linux.git] / include / linux / hugetlb_cgroup.h

diff --git a/include/linux/hugetlb_cgroup.h b/include/linux/hugetlb_cgroup.h
index e5451a3b4ebc07156c829bc79ad6b8f9795aeceb..7d3fde996be32576c4a9e7e8334fadcc678d4e18 100644 (file)
--- a/include/linux/hugetlb_cgroup.h
+++ b/include/linux/hugetlb_cgroup.h
@@ -53,6 +53,16 @@ static inline bool hugetlb_cgroup_disabled(void)
        return false;
 }
 
+extern int hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,
+                                       struct hugetlb_cgroup **ptr);
+extern void hugetlb_cgroup_commit_charge(int idx, unsigned long nr_pages,
+                                        struct hugetlb_cgroup *h_cg,
+                                        struct page *page);
+extern void hugetlb_cgroup_uncharge_page(int idx, unsigned long nr_pages,
+                                        struct page *page);
+extern void hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages,
+                                          struct hugetlb_cgroup *h_cg);
+
 #else
 static inline struct hugetlb_cgroup *hugetlb_cgroup_from_page(struct page *page)
 {
@@ -70,5 +80,33 @@ static inline bool hugetlb_cgroup_disabled(void)
        return true;
 }
 
+static inline int
+hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,
+                            struct hugetlb_cgroup **ptr)
+{
+       return 0;
+}
+
+static inline void
+hugetlb_cgroup_commit_charge(int idx, unsigned long nr_pages,
+                            struct hugetlb_cgroup *h_cg,
+                            struct page *page)
+{
+       return;
+}
+
+static inline void
+hugetlb_cgroup_uncharge_page(int idx, unsigned long nr_pages, struct page *page)
+{
+       return;
+}
+
+static inline void
+hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages,
+                              struct hugetlb_cgroup *h_cg)
+{
+       return;
+}
+
 #endif  /* CONFIG_MEM_RES_CTLR_HUGETLB */
 #endif