#ifndef _LINUX_MEMCONTROL_H
#define _LINUX_MEMCONTROL_H
-
+#include <linux/cgroup.h>
struct mem_cgroup;
struct page_cgroup;
struct page;
struct mm_struct;
#ifdef CONFIG_CGROUP_MEM_RES_CTLR
+/*
+ * All "charge" functions with gfp_mask should use GFP_KERNEL or
+ * (gfp_mask & GFP_RECLAIM_MASK). In current implementatin, memcg doesn't
+ * alloc memory but reclaims memory from all available zones. So, "where I want
+ * memory from" bits of gfp_mask has no meaning. So any bits of that field is
+ * available but adding a rule is better. charge functions' gfp_mask should
+ * be set to GFP_KERNEL or gfp_mask & GFP_RECLAIM_MASK for avoiding ambiguous
+ * codes.
+ * (Of course, if memcg does memory allocation in future, GFP_KERNEL is sane.)
+ */
-extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm,
+extern int mem_cgroup_newpage_charge(struct page *page, struct mm_struct *mm,
gfp_t gfp_mask);
+/* for swap handling */
+extern int mem_cgroup_try_charge_swapin(struct mm_struct *mm,
+ struct page *page, gfp_t mask, struct mem_cgroup **ptr);
+extern void mem_cgroup_commit_charge_swapin(struct page *page,
+ struct mem_cgroup *ptr);
+extern void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr);
+
extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
gfp_t gfp_mask);
-extern void mem_cgroup_move_lists(struct page *page, enum lru_list lru);
+extern void mem_cgroup_add_lru_list(struct page *page, enum lru_list lru);
+extern void mem_cgroup_del_lru_list(struct page *page, enum lru_list lru);
+extern void mem_cgroup_rotate_lru_list(struct page *page, enum lru_list lru);
+extern void mem_cgroup_del_lru(struct page *page);
+extern void mem_cgroup_move_lists(struct page *page,
+ enum lru_list from, enum lru_list to);
extern void mem_cgroup_uncharge_page(struct page *page);
extern void mem_cgroup_uncharge_cache_page(struct page *page);
-extern int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask);
+extern int mem_cgroup_shrink_usage(struct page *page,
+ struct mm_struct *mm, gfp_t gfp_mask);
extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
struct list_head *dst,
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))
+static inline
+int mm_match_cgroup(const struct mm_struct *mm, const struct mem_cgroup *cgroup)
+{
+ struct mem_cgroup *mem;
+ rcu_read_lock();
+ mem = mem_cgroup_from_task((mm)->owner);
+ rcu_read_unlock();
+ return cgroup == mem;
+}
extern int
-mem_cgroup_prepare_migration(struct page *page, struct page *newpage);
-extern void mem_cgroup_end_migration(struct page *page);
+mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr);
+extern void mem_cgroup_end_migration(struct mem_cgroup *mem,
+ struct page *oldpage, struct page *newpage);
/*
* For memory reclaim.
int priority);
extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem,
int priority);
+int mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg);
+unsigned long mem_cgroup_zone_nr_pages(struct mem_cgroup *memcg,
+ struct zone *zone,
+ enum lru_list lru);
+struct zone_reclaim_stat *mem_cgroup_get_reclaim_stat(struct mem_cgroup *memcg,
+ struct zone *zone);
+struct zone_reclaim_stat*
+mem_cgroup_get_reclaim_stat_from_page(struct page *page);
-extern long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, struct zone *zone,
- int priority, enum lru_list lru);
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
+extern int do_swap_account;
+#endif
+static inline bool mem_cgroup_disabled(void)
+{
+ if (mem_cgroup_subsys.disabled)
+ return true;
+ return false;
+}
+
+extern bool mem_cgroup_oom_called(struct task_struct *task);
#else /* CONFIG_CGROUP_MEM_RES_CTLR */
-static inline int mem_cgroup_charge(struct page *page,
+struct mem_cgroup;
+
+static inline int mem_cgroup_newpage_charge(struct page *page,
struct mm_struct *mm, gfp_t gfp_mask)
{
return 0;
return 0;
}
+static inline int mem_cgroup_try_charge_swapin(struct mm_struct *mm,
+ struct page *page, gfp_t gfp_mask, struct mem_cgroup **ptr)
+{
+ return 0;
+}
+
+static inline void mem_cgroup_commit_charge_swapin(struct page *page,
+ struct mem_cgroup *ptr)
+{
+}
+
+static inline void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr)
+{
+}
+
static inline void mem_cgroup_uncharge_page(struct page *page)
{
}
{
}
-static inline int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask)
+static inline int mem_cgroup_shrink_usage(struct page *page,
+ struct mm_struct *mm, gfp_t gfp_mask)
{
return 0;
}
-static inline void mem_cgroup_move_lists(struct page *page, bool active)
+static inline void mem_cgroup_add_lru_list(struct page *page, int lru)
+{
+}
+
+static inline void mem_cgroup_del_lru_list(struct page *page, int lru)
+{
+ return ;
+}
+
+static inline void mem_cgroup_rotate_lru_list(struct page *page, int lru)
+{
+ return ;
+}
+
+static inline void mem_cgroup_del_lru(struct page *page)
+{
+ return ;
+}
+
+static inline void
+mem_cgroup_move_lists(struct page *page, enum lru_list from, enum lru_list to)
{
}
}
static inline int
-mem_cgroup_prepare_migration(struct page *page, struct page *newpage)
+mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr)
{
return 0;
}
-static inline void mem_cgroup_end_migration(struct page *page)
+static inline void mem_cgroup_end_migration(struct mem_cgroup *mem,
+ struct page *oldpage,
+ struct page *newpage)
{
}
{
}
-static inline long mem_cgroup_calc_reclaim(struct mem_cgroup *mem,
- struct zone *zone, int priority,
- enum lru_list lru)
+static inline bool mem_cgroup_disabled(void)
+{
+ return true;
+}
+
+static inline bool mem_cgroup_oom_called(struct task_struct *task)
+{
+ return false;
+}
+
+static inline int
+mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg)
+{
+ return 1;
+}
+
+static inline unsigned long
+mem_cgroup_zone_nr_pages(struct mem_cgroup *memcg, struct zone *zone,
+ enum lru_list lru)
{
return 0;
}
+
+
+static inline struct zone_reclaim_stat*
+mem_cgroup_get_reclaim_stat(struct mem_cgroup *memcg, struct zone *zone)
+{
+ return NULL;
+}
+
+static inline struct zone_reclaim_stat*
+mem_cgroup_get_reclaim_stat_from_page(struct page *page)
+{
+ return NULL;
+}
+
#endif /* CONFIG_CGROUP_MEM_CONT */
#endif /* _LINUX_MEMCONTROL_H */
projects / linux-2.6-omap-h63xx.git / blobdiff