/* SPDX-License-Identifier: GPL-2.0 */
|
#ifndef _LINUX_SCHED_RT_H
|
#define _LINUX_SCHED_RT_H
|
|
#include <linux/sched.h>
|
|
struct task_struct;
|
|
static inline int rt_prio(int prio)
|
{
|
if (unlikely(prio < MAX_RT_PRIO))
|
return 1;
|
return 0;
|
}
|
|
static inline int rt_task(struct task_struct *p)
|
{
|
return rt_prio(p->prio);
|
}
|
|
static inline bool task_is_realtime(struct task_struct *tsk)
|
{
|
int policy = tsk->policy;
|
|
if (policy == SCHED_FIFO || policy == SCHED_RR)
|
return true;
|
if (policy == SCHED_DEADLINE)
|
return true;
|
return false;
|
}
|
|
#ifdef CONFIG_RT_MUTEXES
|
/*
|
* Must hold either p->pi_lock or task_rq(p)->lock.
|
*/
|
static inline struct task_struct *rt_mutex_get_top_task(struct task_struct *p)
|
{
|
return p->pi_top_task;
|
}
|
extern void rt_mutex_setprio(struct task_struct *p, struct task_struct *pi_task);
|
extern void rt_mutex_adjust_pi(struct task_struct *p);
|
static inline bool tsk_is_pi_blocked(struct task_struct *tsk)
|
{
|
return tsk->pi_blocked_on != NULL;
|
}
|
#else
|
static inline struct task_struct *rt_mutex_get_top_task(struct task_struct *task)
|
{
|
return NULL;
|
}
|
# define rt_mutex_adjust_pi(p) do { } while (0)
|
static inline bool tsk_is_pi_blocked(struct task_struct *tsk)
|
{
|
return false;
|
}
|
#endif
|
|
extern void normalize_rt_tasks(void);
|
|
|
/*
|
* default timeslice is 100 msecs (used only for SCHED_RR tasks).
|
* Timeslices get refilled after they expire.
|
*/
|
#define RR_TIMESLICE (100 * HZ / 1000)
|
|
#endif /* _LINUX_SCHED_RT_H */
|
