projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 70ddf637 AV |
1 | #ifndef __LINUX_VMPRESSURE_H |
| 2 | #define __LINUX_VMPRESSURE_H | |
| 3 | ||
| 4 | #include <linux/mutex.h> | |
| 5 | #include <linux/list.h> | |
| 6 | #include <linux/workqueue.h> | |
| 7 | #include <linux/gfp.h> | |
| 8 | #include <linux/types.h> | |
| 9 | #include <linux/cgroup.h> | |
| fba94807 | 10 | #include <linux/eventfd.h> |
| 70ddf637 AV |
11 | |
| 12 | struct vmpressure { | |
| 13 | unsigned long scanned; | |
| 14 | unsigned long reclaimed; | |
| 15 | /* The lock is used to keep the scanned/reclaimed above in sync. */ | |
| 22f2020f | 16 | struct spinlock sr_lock; |
| 70ddf637 AV |
17 | |
| 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; | |
| 22 | ||
| 23 | struct work_struct work; | |
| 24 | }; | |
| 25 | ||
| 26 | struct mem_cgroup; | |
| 27 | ||
| 28 | #ifdef CONFIG_MEMCG | |
| 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); | |
| 32 | ||
| 33 | extern void vmpressure_init(struct vmpressure *vmpr); | |
| 33cb876e | 34 | extern void vmpressure_cleanup(struct vmpressure *vmpr); |
| 70ddf637 AV |
35 | extern struct vmpressure *memcg_to_vmpressure(struct mem_cgroup *memcg); |
| 36 | extern struct cgroup_subsys_state *vmpressure_to_css(struct vmpressure *vmpr); | |
| 59b6f873 | 37 | extern int vmpressure_register_event(struct mem_cgroup *memcg, |
| 70ddf637 AV |
38 | struct eventfd_ctx *eventfd, |
| 39 | const char *args); | |
| 59b6f873 | 40 | extern void vmpressure_unregister_event(struct mem_cgroup *memcg, |
| 70ddf637 AV |
41 | struct eventfd_ctx *eventfd); |
| 42 | #else | |
| 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, | |
| 46 | int prio) {} | |
| 47 | #endif /* CONFIG_MEMCG */ | |
| 48 | #endif /* __LINUX_VMPRESSURE_H */ |