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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071/* SPDX-License-Identifier: GPL-2.0 */#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>#include <linux/cgroup-defs.h>#include <linux/cgroup.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_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);struct psi_trigger *psi_trigger_create(struct psi_group *group, char *buf, enum psi_res res, struct file *file, struct kernfs_open_file *of);void psi_trigger_destroy(struct psi_trigger *t);
__poll_t psi_trigger_poll(void **trigger_ptr, struct file *file, poll_table *wait);
#ifdef CONFIG_CGROUPSstatic inline struct psi_group *cgroup_psi(struct cgroup *cgrp){ return cgroup_ino(cgrp) == 1 ? &psi_system : cgrp->psi;}
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);void psi_cgroup_restart(struct psi_group *group);#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_CGROUPSstatic 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);}static inline void psi_cgroup_restart(struct psi_group *group) {}#endif
#endif /* CONFIG_PSI */
#endif /* _LINUX_PSI_H */