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>
12 unsigned long scanned
;
13 unsigned long reclaimed
;
14 /* The lock is used to keep the scanned/reclaimed above in sync. */
15 struct spinlock sr_lock
;
17 /* The list of vmpressure_event structs. */
18 struct list_head events
;
19 /* Have to grab the lock on events traversal or modifications. */
20 struct mutex events_lock
;
22 struct work_struct work
;
28 extern void vmpressure(gfp_t gfp
, struct mem_cgroup
*memcg
,
29 unsigned long scanned
, unsigned long reclaimed
);
30 extern void vmpressure_prio(gfp_t gfp
, struct mem_cgroup
*memcg
, int prio
);
32 extern void vmpressure_init(struct vmpressure
*vmpr
);
33 extern void vmpressure_cleanup(struct vmpressure
*vmpr
);
34 extern struct vmpressure
*memcg_to_vmpressure(struct mem_cgroup
*memcg
);
35 extern struct cgroup_subsys_state
*vmpressure_to_css(struct vmpressure
*vmpr
);
36 extern struct vmpressure
*css_to_vmpressure(struct cgroup_subsys_state
*css
);
37 extern int vmpressure_register_event(struct cgroup_subsys_state
*css
,
39 struct eventfd_ctx
*eventfd
,
41 extern void vmpressure_unregister_event(struct cgroup_subsys_state
*css
,
43 struct eventfd_ctx
*eventfd
);
45 static inline void vmpressure(gfp_t gfp
, struct mem_cgroup
*memcg
,
46 unsigned long scanned
, unsigned long reclaimed
) {}
47 static inline void vmpressure_prio(gfp_t gfp
, struct mem_cgroup
*memcg
,
49 #endif /* CONFIG_MEMCG */
50 #endif /* __LINUX_VMPRESSURE_H */
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