71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
|
/* 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_CGROUPS
|
||
|
|
static 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_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);
|
||
|
|
}
|
||
|
|
static inline void psi_cgroup_restart(struct psi_group *group) {}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* CONFIG_PSI */
|
||
|
|
|
||
|
|
#endif /* _LINUX_PSI_H */
|