mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-14 06:35:12 +00:00
d79ddb069c
This patch move psi_task_change/psi_task_switch declarations out of PSI public header, since they are only needed for implementing the PSI stats tracking in sched/stats.h psi_task_switch is obvious, psi_task_change can't be public helper since it doesn't check psi_disabled static key. And there is no any user now, so put it in sched/stats.h too. Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Link: https://lore.kernel.org/r/20220825164111.29534-5-zhouchengming@bytedance.com
61 lines
1.5 KiB
C
61 lines
1.5 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>
|
|
|
|
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);
|
|
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
|
|
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);
|
|
#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 */
|