Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
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);
20void psi_task_switch(struct task_struct *prev, struct task_struct *next,
21 bool sleep);
22
23void psi_memstall_enter(unsigned long *flags);
24void psi_memstall_leave(unsigned long *flags);
25
26int psi_show(struct seq_file *s, struct psi_group *group, enum psi_res res);
27
28#ifdef CONFIG_CGROUPS
29int psi_cgroup_alloc(struct cgroup *cgrp);
30void psi_cgroup_free(struct cgroup *cgrp);
31void cgroup_move_task(struct task_struct *p, struct css_set *to);
32
33struct psi_trigger *psi_trigger_create(struct psi_group *group,
34 char *buf, size_t nbytes, enum psi_res res);
35void psi_trigger_replace(void **trigger_ptr, struct psi_trigger *t);
36
37__poll_t psi_trigger_poll(void **trigger_ptr, struct file *file,
38 poll_table *wait);
39#endif
40
41#else /* CONFIG_PSI */
42
43static inline void psi_init(void) {}
44
45static inline void psi_memstall_enter(unsigned long *flags) {}
46static inline void psi_memstall_leave(unsigned long *flags) {}
47
48#ifdef CONFIG_CGROUPS
49static inline int psi_cgroup_alloc(struct cgroup *cgrp)
50{
51 return 0;
52}
53static inline void psi_cgroup_free(struct cgroup *cgrp)
54{
55}
56static inline void cgroup_move_task(struct task_struct *p, struct css_set *to)
57{
58 rcu_assign_pointer(p->cgroups, to);
59}
60#endif
61
62#endif /* CONFIG_PSI */
63
64#endif /* _LINUX_PSI_H */