| #ifndef _LINUX_PSI_H |
| #define _LINUX_PSI_H |
| |
| #include <linux/jump_label.h> |
| #include <linux/psi_types.h> |
| #include <linux/sched.h> |
| #include <linux/poll.h> |
| |
| struct seq_file; |
| struct css_set; |
| |
| #ifdef CONFIG_PSI |
| |
| extern struct static_key_false psi_disabled; |
| extern struct psi_group psi_system; |
| |
| void psi_init(void); |
| |
| void psi_task_change(struct task_struct *task, int clear, int set); |
| void psi_task_switch(struct task_struct *prev, struct task_struct *next, |
| bool sleep); |
| |
| void psi_memstall_enter(unsigned long *flags); |
| void psi_memstall_leave(unsigned long *flags); |
| |
| int psi_show(struct seq_file *s, struct psi_group *group, enum psi_res res); |
| |
| #ifdef CONFIG_CGROUPS |
| int psi_cgroup_alloc(struct cgroup *cgrp); |
| void psi_cgroup_free(struct cgroup *cgrp); |
| void cgroup_move_task(struct task_struct *p, struct css_set *to); |
| |
| struct psi_trigger *psi_trigger_create(struct psi_group *group, |
| char *buf, size_t nbytes, enum psi_res res); |
| void psi_trigger_replace(void **trigger_ptr, struct psi_trigger *t); |
| |
| __poll_t psi_trigger_poll(void **trigger_ptr, struct file *file, |
| poll_table *wait); |
| #endif |
| |
| #else /* CONFIG_PSI */ |
| |
| static inline void psi_init(void) {} |
| |
| static inline void psi_memstall_enter(unsigned long *flags) {} |
| static inline void psi_memstall_leave(unsigned long *flags) {} |
| |
| #ifdef CONFIG_CGROUPS |
| static inline int psi_cgroup_alloc(struct cgroup *cgrp) |
| { |
| return 0; |
| } |
| static inline void psi_cgroup_free(struct cgroup *cgrp) |
| { |
| } |
| static inline void cgroup_move_task(struct task_struct *p, struct css_set *to) |
| { |
| rcu_assign_pointer(p->cgroups, to); |
| } |
| #endif |
| |
| #endif /* CONFIG_PSI */ |
| |
| #endif /* _LINUX_PSI_H */ |