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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - include/linux/vmpressure.h
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
;
16 unsigned long tree_scanned
;
17 unsigned long tree_reclaimed
;
18 /* The lock is used to keep the scanned/reclaimed above in sync. */
19 struct spinlock sr_lock
;
21 /* The list of vmpressure_event structs. */
22 struct list_head events
;
23 /* Have to grab the lock on events traversal or modifications. */
24 struct mutex events_lock
;
26 struct work_struct work
;
32 extern void vmpressure(gfp_t gfp
, struct mem_cgroup
*memcg
, bool tree
,
33 unsigned long scanned
, unsigned long reclaimed
);
34 extern void vmpressure_prio(gfp_t gfp
, struct mem_cgroup
*memcg
, int prio
);
36 extern void vmpressure_init(struct vmpressure
*vmpr
);
37 extern void vmpressure_cleanup(struct vmpressure
*vmpr
);
38 extern struct vmpressure
*memcg_to_vmpressure(struct mem_cgroup
*memcg
);
39 extern struct cgroup_subsys_state
*vmpressure_to_css(struct vmpressure
*vmpr
);
40 extern int vmpressure_register_event(struct mem_cgroup
*memcg
,
41 struct eventfd_ctx
*eventfd
,
43 extern void vmpressure_unregister_event(struct mem_cgroup
*memcg
,
44 struct eventfd_ctx
*eventfd
);
46 static inline void vmpressure(gfp_t gfp
, struct mem_cgroup
*memcg
, bool tree
,
47 unsigned long scanned
, unsigned long reclaimed
) {}
48 static inline void vmpressure_prio(gfp_t gfp
, struct mem_cgroup
*memcg
,
50 #endif /* CONFIG_MEMCG */
51 #endif /* __LINUX_VMPRESSURE_H */