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 */