* Copyright IBM Corporation, 2007
* Author Balbir Singh <balbir@linux.vnet.ibm.com>
*
+ * Copyright 2007 OpenVZ SWsoft Inc
+ * Author: Pavel Emelianov <xemul@openvz.org>
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
#ifndef _LINUX_MEMCONTROL_H
#define _LINUX_MEMCONTROL_H
+struct mem_cgroup;
+struct page_cgroup;
+struct page;
+struct mm_struct;
+
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
+
+#define page_reset_bad_cgroup(page) ((page)->page_cgroup = 0)
+
+extern struct page_cgroup *page_get_page_cgroup(struct page *page);
+extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm,
+ gfp_t gfp_mask);
+extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
+ gfp_t gfp_mask);
+extern void mem_cgroup_uncharge_page(struct page *page);
+extern void mem_cgroup_move_lists(struct page *page, bool active);
+extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
+ struct list_head *dst,
+ unsigned long *scanned, int order,
+ int mode, struct zone *z,
+ struct mem_cgroup *mem_cont,
+ int active);
+extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask);
+int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem);
+
+extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p);
+
+#define mm_match_cgroup(mm, cgroup) \
+ ((cgroup) == mem_cgroup_from_task((mm)->owner))
+
+extern int mem_cgroup_prepare_migration(struct page *page);
+extern void mem_cgroup_end_migration(struct page *page);
+extern void mem_cgroup_page_migration(struct page *page, struct page *newpage);
+
+/*
+ * For memory reclaim.
+ */
+extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem);
+extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem);
+
+extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem);
+extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem,
+ int priority);
+extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem,
+ int priority);
+
+extern long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem,
+ struct zone *zone, int priority);
+extern long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem,
+ struct zone *zone, int priority);
+
+#else /* CONFIG_CGROUP_MEM_RES_CTLR */
+static inline void page_reset_bad_cgroup(struct page *page)
+{
+}
+
+static inline struct page_cgroup *page_get_page_cgroup(struct page *page)
+{
+ return NULL;
+}
+
+static inline int mem_cgroup_charge(struct page *page,
+ struct mm_struct *mm, gfp_t gfp_mask)
+{
+ return 0;
+}
+
+static inline int mem_cgroup_cache_charge(struct page *page,
+ struct mm_struct *mm, gfp_t gfp_mask)
+{
+ return 0;
+}
+
+static inline void mem_cgroup_uncharge_page(struct page *page)
+{
+}
+
+static inline void mem_cgroup_move_lists(struct page *page, bool active)
+{
+}
+
+static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem)
+{
+ return 1;
+}
+
+static inline int task_in_mem_cgroup(struct task_struct *task,
+ const struct mem_cgroup *mem)
+{
+ return 1;
+}
+
+static inline int mem_cgroup_prepare_migration(struct page *page)
+{
+ return 0;
+}
+
+static inline void mem_cgroup_end_migration(struct page *page)
+{
+}
+
+static inline void
+mem_cgroup_page_migration(struct page *page, struct page *newpage)
+{
+}
+
+static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem)
+{
+ return 0;
+}
+
+static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem)
+{
+ return 0;
+}
+
+static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem)
+{
+ return 0;
+}
+
+static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem,
+ int priority)
+{
+}
+
+static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem,
+ int priority)
+{
+}
+
+static inline long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem,
+ struct zone *zone, int priority)
+{
+ return 0;
+}
+
+static inline long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem,
+ struct zone *zone, int priority)
+{
+ return 0;
+}
+#endif /* CONFIG_CGROUP_MEM_CONT */
+
#endif /* _LINUX_MEMCONTROL_H */