struct list_head active_list;
struct list_head inactive_list;
- unsigned long nr_active;
- unsigned long nr_inactive;
+ unsigned long nr_active; // # of pages in the active list
+ unsigned long nr_inactive; // # of pages in the inactive list
unsigned long active_over;
unsigned long inactive_over;
unsigned long shrink_inactive;
long shrink_weight;
unsigned long shrink_flag;
- struct list_head victim_list; /* list of ckrm_zones chosen for
- * shrinking. These are over their
- * 'guarantee'
- */
+
+ struct list_head victim_list; // list of ckrm_zones chosen for shrinking
struct zone *zone;
struct ckrm_mem_res *memcls;
};
struct ckrm_mem_res {
unsigned long flags;
- struct ckrm_core_class *core; /* the core i am part of... */
- struct ckrm_core_class *parent; /* parent of the core i am part of */
- struct ckrm_shares shares;
- struct list_head mcls_list; /* list of all 1-level classes */
- struct kref nr_users; /* ref count */
- atomic_t pg_total; /* # of pages used by this class */
- int pg_guar; /* absolute # of guarantee */
- int pg_limit; /* absolute # of limit */
- int pg_borrowed; /* # of pages borrowed from parent */
- int pg_lent; /* # of pages lent to children */
- int pg_unused; /* # of pages left to this class
- * (after giving the guarantees to
- * children. need to borrow from
- * parent if more than this is needed.
- */
- int hier; /* hiearchy level, root = 0 */
- int impl_guar; /* for classes with don't care guar */
- int nr_dontcare; /* # of dont care children */
-
+ struct ckrm_core_class *core; // the core i am part of...
+ struct ckrm_core_class *parent; // parent of the core i am part of....
+ struct ckrm_shares shares;
+ struct list_head mcls_list; // list of all 1-level classes
+ struct list_head shrink_list; // list of classes need to be shrunk
+ struct kref nr_users; // # of references to this class/data structure
+ atomic_t pg_total; // # of pages used by this class
+ int pg_guar; // # of pages this class is guaranteed
+ int pg_limit; // max # of pages this class can get
+ int pg_borrowed; // # of pages this class borrowed from its parent
+ int pg_lent; // # of pages this class lent to its children
+ int pg_unused; // # of pages left to this class (after giving the
+ // guarantees to children. need to borrow from parent if
+ // more than this is needed.
+ int impl_guar; // implicit guarantee for class with don't care guar
+ int nr_dontcare; // # of children with don't care guarantee
struct ckrm_zone ckrm_zone[MAX_NR_ZONES];
-
- struct list_head shrink_list; /* list of classes that are near
- * limit and need to be shrunk
- */
int shrink_count;
unsigned long last_shrink;
+ int over_limit_failures;
+ int shrink_pages; // # of pages to free in this class
+ int hier; // hiearchy, root = 0
};
-#define CLS_SHRINK_BIT (1)
-
-#define CLS_AT_LIMIT (1)
-
extern atomic_t ckrm_mem_real_count;
-extern struct ckrm_res_ctlr mem_rcbs;
-extern struct ckrm_mem_res *ckrm_mem_root_class;
-extern struct list_head ckrm_memclass_list;
+extern unsigned int ckrm_tot_lru_pages;
+extern int ckrm_nr_mem_classes;
extern struct list_head ckrm_shrink_list;
+extern struct list_head ckrm_memclass_list;
extern spinlock_t ckrm_mem_lock;
-extern int ckrm_nr_mem_classes;
-extern unsigned int ckrm_tot_lru_pages;
-extern int ckrm_mem_shrink_count;
-extern int ckrm_mem_shrink_to;
-extern int ckrm_mem_shrink_interval ;
+extern struct ckrm_res_ctlr mem_rcbs;
+extern struct ckrm_mem_res *ckrm_mem_root_class;
-extern void ckrm_mem_migrate_mm(struct mm_struct *, struct ckrm_mem_res *);
-extern void ckrm_mem_migrate_all_pages(struct ckrm_mem_res *,
- struct ckrm_mem_res *);
+#define page_ckrmzone(page) ((page)->ckrm_zone)
+
+#define CLS_SHRINK_BIT (1)
+
+// used in flags. set when a class is more than 90% of its maxlimit
+#define MEM_AT_LIMIT 1
+
+extern void ckrm_init_mm_to_task(struct mm_struct *, struct task_struct *);
+extern void ckrm_mem_evaluate_mm(struct mm_struct *, struct ckrm_mem_res *);
+extern void ckrm_at_limit(struct ckrm_mem_res *);
+extern int ckrm_memclass_valid(struct ckrm_mem_res *);
+extern int ckrm_mem_get_shrink_to(void);
+extern void check_memclass(struct ckrm_mem_res *, char *);
extern void memclass_release(struct kref *);
-extern void shrink_get_victims(struct zone *, unsigned long ,
- unsigned long, struct list_head *);
-extern void ckrm_shrink_atlimit(struct ckrm_mem_res *);
+
#else
-#define ckrm_mem_migrate_mm(a, b) do {} while (0)
-#define ckrm_mem_migrate_all_pages(a, b) do {} while (0)
+#define ckrm_init_mm_to_current(a) do {} while (0)
+#define ckrm_mem_evaluate_mm(a) do {} while (0)
+#define ckrm_init_mm_to_task(a,b) do {} while (0)
-#endif /* CONFIG_CKRM_RES_MEM */
+#endif // CONFIG_CKRM_RES_MEM
-#endif /* _LINUX_CKRM_MEM_H */
+#endif //_LINUX_CKRM_MEM_H
git://git.onelab.eu / linux-2.6.git / blobdiff