1 /* SPDX-License-Identifier: GPL-2.0 */ <<
2 #ifndef __LINUX_VMPRESSURE_H 1 #ifndef __LINUX_VMPRESSURE_H
3 #define __LINUX_VMPRESSURE_H 2 #define __LINUX_VMPRESSURE_H
4 3
5 #include <linux/mutex.h> 4 #include <linux/mutex.h>
6 #include <linux/list.h> 5 #include <linux/list.h>
7 #include <linux/workqueue.h> 6 #include <linux/workqueue.h>
8 #include <linux/gfp.h> 7 #include <linux/gfp.h>
9 #include <linux/types.h> 8 #include <linux/types.h>
10 #include <linux/cgroup.h> 9 #include <linux/cgroup.h>
11 #include <linux/eventfd.h> <<
12 10
13 struct vmpressure { 11 struct vmpressure {
14 unsigned long scanned; 12 unsigned long scanned;
15 unsigned long reclaimed; 13 unsigned long reclaimed;
16 <<
17 unsigned long tree_scanned; <<
18 unsigned long tree_reclaimed; <<
19 /* The lock is used to keep the scanne 14 /* The lock is used to keep the scanned/reclaimed above in sync. */
20 spinlock_t sr_lock; !! 15 struct mutex sr_lock;
21 16
22 /* The list of vmpressure_event struct 17 /* The list of vmpressure_event structs. */
23 struct list_head events; 18 struct list_head events;
24 /* Have to grab the lock on events tra 19 /* Have to grab the lock on events traversal or modifications. */
25 struct mutex events_lock; 20 struct mutex events_lock;
26 21
27 struct work_struct work; 22 struct work_struct work;
28 }; 23 };
29 24
30 struct mem_cgroup; 25 struct mem_cgroup;
31 26
32 #ifdef CONFIG_MEMCG 27 #ifdef CONFIG_MEMCG
33 extern void vmpressure(gfp_t gfp, struct mem_c !! 28 extern void vmpressure(gfp_t gfp, struct mem_cgroup *memcg,
34 unsigned long scanned, 29 unsigned long scanned, unsigned long reclaimed);
35 extern void vmpressure_prio(gfp_t gfp, struct 30 extern void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg, int prio);
36 31
37 extern void vmpressure_init(struct vmpressure 32 extern void vmpressure_init(struct vmpressure *vmpr);
38 extern void vmpressure_cleanup(struct vmpressu <<
39 extern struct vmpressure *memcg_to_vmpressure( 33 extern struct vmpressure *memcg_to_vmpressure(struct mem_cgroup *memcg);
40 extern struct mem_cgroup *vmpressure_to_memcg( !! 34 extern struct cgroup_subsys_state *vmpressure_to_css(struct vmpressure *vmpr);
41 extern int vmpressure_register_event(struct me !! 35 extern struct vmpressure *css_to_vmpressure(struct cgroup_subsys_state *css);
>> 36 extern int vmpressure_register_event(struct cgroup *cg, struct cftype *cft,
42 struct ev 37 struct eventfd_ctx *eventfd,
43 const cha 38 const char *args);
44 extern void vmpressure_unregister_event(struct !! 39 extern void vmpressure_unregister_event(struct cgroup *cg, struct cftype *cft,
45 struct 40 struct eventfd_ctx *eventfd);
46 #else 41 #else
47 static inline void vmpressure(gfp_t gfp, struc !! 42 static inline void vmpressure(gfp_t gfp, struct mem_cgroup *memcg,
48 unsigned long sc 43 unsigned long scanned, unsigned long reclaimed) {}
49 static inline void vmpressure_prio(gfp_t gfp, 44 static inline void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg,
50 int prio) { 45 int prio) {}
51 #endif /* CONFIG_MEMCG */ 46 #endif /* CONFIG_MEMCG */
52 #endif /* __LINUX_VMPRESSURE_H */ 47 #endif /* __LINUX_VMPRESSURE_H */
53 48
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