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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> | |
7 | ||
2ce7135a JW |
8 | struct seq_file; |
9 | struct css_set; | |
10 | ||
eb414681 JW |
11 | #ifdef CONFIG_PSI |
12 | ||
e0c27447 | 13 | extern struct static_key_false psi_disabled; |
eb414681 JW |
14 | |
15 | void psi_init(void); | |
16 | ||
17 | void psi_task_change(struct task_struct *task, int clear, int set); | |
18 | ||
19 | void psi_memstall_tick(struct task_struct *task, int cpu); | |
20 | void psi_memstall_enter(unsigned long *flags); | |
21 | void psi_memstall_leave(unsigned long *flags); | |
22 | ||
2ce7135a JW |
23 | int psi_show(struct seq_file *s, struct psi_group *group, enum psi_res res); |
24 | ||
25 | #ifdef CONFIG_CGROUPS | |
26 | int psi_cgroup_alloc(struct cgroup *cgrp); | |
27 | void psi_cgroup_free(struct cgroup *cgrp); | |
28 | void cgroup_move_task(struct task_struct *p, struct css_set *to); | |
29 | #endif | |
30 | ||
eb414681 JW |
31 | #else /* CONFIG_PSI */ |
32 | ||
33 | static inline void psi_init(void) {} | |
34 | ||
35 | static inline void psi_memstall_enter(unsigned long *flags) {} | |
36 | static inline void psi_memstall_leave(unsigned long *flags) {} | |
37 | ||
2ce7135a JW |
38 | #ifdef CONFIG_CGROUPS |
39 | static inline int psi_cgroup_alloc(struct cgroup *cgrp) | |
40 | { | |
41 | return 0; | |
42 | } | |
43 | static inline void psi_cgroup_free(struct cgroup *cgrp) | |
44 | { | |
45 | } | |
46 | static inline void cgroup_move_task(struct task_struct *p, struct css_set *to) | |
47 | { | |
48 | rcu_assign_pointer(p->cgroups, to); | |
49 | } | |
50 | #endif | |
51 | ||
eb414681 JW |
52 | #endif /* CONFIG_PSI */ |
53 | ||
54 | #endif /* _LINUX_PSI_H */ |