1#ifndef _LINUX_SCHED_RT_H 2#define _LINUX_SCHED_RT_H 3 4#include <linux/sched.h> 5 6struct task_struct; 7 8static inline int rt_prio(int prio) 9{ 10 if (unlikely(prio < MAX_RT_PRIO)) 11 return 1; 12 return 0; 13} 14 15static inline int rt_task(struct task_struct *p) 16{ 17 return rt_prio(p->prio); 18} 19 20#ifdef CONFIG_RT_MUTEXES 21/* 22 * Must hold either p->pi_lock or task_rq(p)->lock. 23 */ 24static inline struct task_struct *rt_mutex_get_top_task(struct task_struct *p) 25{ 26 return p->pi_top_task; 27} 28extern void rt_mutex_setprio(struct task_struct *p, struct task_struct *pi_task); 29extern void rt_mutex_adjust_pi(struct task_struct *p); 30static inline bool tsk_is_pi_blocked(struct task_struct *tsk) 31{ 32 return tsk->pi_blocked_on != NULL; 33} 34#else 35static inline struct task_struct *rt_mutex_get_top_task(struct task_struct *task) 36{ 37 return NULL; 38} 39# define rt_mutex_adjust_pi(p) do { } while (0) 40static inline bool tsk_is_pi_blocked(struct task_struct *tsk) 41{ 42 return false; 43} 44#endif 45 46extern void normalize_rt_tasks(void); 47 48 49/* 50 * default timeslice is 100 msecs (used only for SCHED_RR tasks). 51 * Timeslices get refilled after they expire. 52 */ 53#define RR_TIMESLICE (100 * HZ / 1000) 54 55#endif /* _LINUX_SCHED_RT_H */ 56