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 8 struct seq_file; 9 struct css_set; 10 11 #ifdef CONFIG_PSI 12 13 extern struct static_key_false psi_disabled; 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 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 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 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 52 #endif /* CONFIG_PSI */ 53 54 #endif /* _LINUX_PSI_H */ 55