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eb414681 JW |
1 | #ifndef _LINUX_PSI_H |
2 | #define _LINUX_PSI_H | |
3 | ||
e0c27447 | 4 | #include <linux/jump_label.h> |
eb414681 JW |
5 | #include <linux/psi_types.h> |
6 | #include <linux/sched.h> | |
0e94682b | 7 | #include <linux/poll.h> |
eb414681 | 8 | |
2ce7135a JW |
9 | struct seq_file; |
10 | struct css_set; | |
11 | ||
eb414681 JW |
12 | #ifdef CONFIG_PSI |
13 | ||
e0c27447 | 14 | extern struct static_key_false psi_disabled; |
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15 | |
16 | void psi_init(void); | |
17 | ||
18 | void psi_task_change(struct task_struct *task, int clear, int set); | |
19 | ||
20 | void psi_memstall_tick(struct task_struct *task, int cpu); | |
21 | void psi_memstall_enter(unsigned long *flags); | |
22 | void psi_memstall_leave(unsigned long *flags); | |
23 | ||
2ce7135a JW |
24 | int psi_show(struct seq_file *s, struct psi_group *group, enum psi_res res); |
25 | ||
26 | #ifdef CONFIG_CGROUPS | |
27 | int psi_cgroup_alloc(struct cgroup *cgrp); | |
28 | void psi_cgroup_free(struct cgroup *cgrp); | |
29 | void cgroup_move_task(struct task_struct *p, struct css_set *to); | |
0e94682b SB |
30 | |
31 | struct psi_trigger *psi_trigger_create(struct psi_group *group, | |
32 | char *buf, size_t nbytes, enum psi_res res); | |
33 | void psi_trigger_replace(void **trigger_ptr, struct psi_trigger *t); | |
34 | ||
35 | __poll_t psi_trigger_poll(void **trigger_ptr, struct file *file, | |
36 | poll_table *wait); | |
2ce7135a JW |
37 | #endif |
38 | ||
eb414681 JW |
39 | #else /* CONFIG_PSI */ |
40 | ||
41 | static inline void psi_init(void) {} | |
42 | ||
43 | static inline void psi_memstall_enter(unsigned long *flags) {} | |
44 | static inline void psi_memstall_leave(unsigned long *flags) {} | |
45 | ||
2ce7135a JW |
46 | #ifdef CONFIG_CGROUPS |
47 | static inline int psi_cgroup_alloc(struct cgroup *cgrp) | |
48 | { | |
49 | return 0; | |
50 | } | |
51 | static inline void psi_cgroup_free(struct cgroup *cgrp) | |
52 | { | |
53 | } | |
54 | static inline void cgroup_move_task(struct task_struct *p, struct css_set *to) | |
55 | { | |
56 | rcu_assign_pointer(p->cgroups, to); | |
57 | } | |
58 | #endif | |
59 | ||
eb414681 JW |
60 | #endif /* CONFIG_PSI */ |
61 | ||
62 | #endif /* _LINUX_PSI_H */ |