1 #ifndef _LINUX_PSI_H 2 #define _LINUX_PSI_H 3 4 #include <linux/psi_types.h> 5 #include <linux/sched.h> 6 7 struct seq_file; 8 struct css_set; 9 10 #ifdef CONFIG_PSI 11 12 extern bool psi_disabled; 13 14 void psi_init(void); 15 16 void psi_task_change(struct task_struct *task, int clear, int set); 17 18 void psi_memstall_tick(struct task_struct *task, int cpu); 19 void psi_memstall_enter(unsigned long *flags); 20 void psi_memstall_leave(unsigned long *flags); 21 22 int psi_show(struct seq_file *s, struct psi_group *group, enum psi_res res); 23 24 #ifdef CONFIG_CGROUPS 25 int psi_cgroup_alloc(struct cgroup *cgrp); 26 void psi_cgroup_free(struct cgroup *cgrp); 27 void cgroup_move_task(struct task_struct *p, struct css_set *to); 28 #endif 29 30 #else /* CONFIG_PSI */ 31 32 static inline void psi_init(void) {} 33 34 static inline void psi_memstall_enter(unsigned long *flags) {} 35 static inline void psi_memstall_leave(unsigned long *flags) {} 36 37 #ifdef CONFIG_CGROUPS 38 static inline int psi_cgroup_alloc(struct cgroup *cgrp) 39 { 40 return 0; 41 } 42 static inline void psi_cgroup_free(struct cgroup *cgrp) 43 { 44 } 45 static inline void cgroup_move_task(struct task_struct *p, struct css_set *to) 46 { 47 rcu_assign_pointer(p->cgroups, to); 48 } 49 #endif 50 51 #endif /* CONFIG_PSI */ 52 53 #endif /* _LINUX_PSI_H */ 54