root/include/linux/sched/rt.h

INCLUDED FROM

DEFINITIONS

1. rt_prio
2. rt_task
3. tsk_is_pi_blocked
4. rt_mutex_getprio
5. rt_mutex_check_prio
6. rt_mutex_get_top_task
7. tsk_is_pi_blocked

#ifndef _SCHED_RT_H
#define _SCHED_RT_H

#include <linux/sched/prio.h>

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);
}

#ifdef CONFIG_RT_MUTEXES
extern int rt_mutex_getprio(struct task_struct *p);
extern void rt_mutex_setprio(struct task_struct *p, int prio);
extern int rt_mutex_check_prio(struct task_struct *task, int newprio);
extern struct task_struct *rt_mutex_get_top_task(struct task_struct *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 int rt_mutex_getprio(struct task_struct *p)
{
        return p->normal_prio;
}

static inline int rt_mutex_check_prio(struct task_struct *task, int newprio)
{
        return 0;
}

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 /* _SCHED_RT_H */