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