1 #ifndef __LINUX_VMPRESSURE_H
2 #define __LINUX_VMPRESSURE_H
4 #include <linux/mutex.h>
5 #include <linux/list.h>
6 #include <linux/workqueue.h>
8 #include <linux/types.h>
9 #include <linux/cgroup.h>
10 #include <linux/eventfd.h>
13 unsigned long scanned
;
14 unsigned long reclaimed
;
15 /* The lock is used to keep the scanned/reclaimed above in sync. */
16 struct spinlock sr_lock
;
18 /* The list of vmpressure_event structs. */
19 struct list_head events
;
20 /* Have to grab the lock on events traversal or modifications. */
21 struct mutex events_lock
;
23 struct work_struct work
;
29 extern void vmpressure(gfp_t gfp
, struct mem_cgroup
*memcg
,
30 unsigned long scanned
, unsigned long reclaimed
);
31 extern void vmpressure_prio(gfp_t gfp
, struct mem_cgroup
*memcg
, int prio
);
33 extern void vmpressure_init(struct vmpressure
*vmpr
);
34 extern void vmpressure_cleanup(struct vmpressure
*vmpr
);
35 extern struct vmpressure
*memcg_to_vmpressure(struct mem_cgroup
*memcg
);
36 extern struct cgroup_subsys_state
*vmpressure_to_css(struct vmpressure
*vmpr
);
37 extern int vmpressure_register_event(struct mem_cgroup
*memcg
,
38 struct eventfd_ctx
*eventfd
,
40 extern void vmpressure_unregister_event(struct mem_cgroup
*memcg
,
41 struct eventfd_ctx
*eventfd
);
43 static inline void vmpressure(gfp_t gfp
, struct mem_cgroup
*memcg
,
44 unsigned long scanned
, unsigned long reclaimed
) {}
45 static inline void vmpressure_prio(gfp_t gfp
, struct mem_cgroup
*memcg
,
47 #endif /* CONFIG_MEMCG */
48 #endif /* __LINUX_VMPRESSURE_H */
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