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sched/psi: Move private helpers to sched/stats.h

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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
This commit is contained in:
Chengming Zhou 2022-08-26 00:41:05 +08:00 committed by Peter Zijlstra
parent e2ad8ab04c
commit d79ddb069c
2 changed files with 4 additions and 4 deletions
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4
include/linux/psi.h
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@ -18,10 +18,6 @@ extern struct psi_group psi_system;
void psi_init(void);
void psi_task_change(struct task_struct *task, int clear, int set);
void psi_task_switch(struct task_struct *prev, struct task_struct *next,
bool sleep);
void psi_memstall_enter(unsigned long *flags);
void psi_memstall_leave(unsigned long *flags);

4
kernel/sched/stats.h
View file

@ -107,6 +107,10 @@ __schedstats_from_se(struct sched_entity *se)
}
#ifdef CONFIG_PSI
void psi_task_change(struct task_struct *task, int clear, int set);
void psi_task_switch(struct task_struct *prev, struct task_struct *next,
bool sleep);
/*
* PSI tracks state that persists across sleeps, such as iowaits and
* memory stalls. As a result, it has to distinguish between sleeps,