Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_SCHED_RT_H
3#define _LINUX_SCHED_RT_H
4
5#include <linux/sched.h>
6
7struct task_struct;
8
9static inline int rt_prio(int prio)
10{
11 if (unlikely(prio < MAX_RT_PRIO))
12 return 1;
13 return 0;
14}
15
16static inline int rt_task(struct task_struct *p)
17{
18 return rt_prio(p->prio);
19}
20
21#ifdef CONFIG_RT_MUTEXES
22/*
23 * Must hold either p->pi_lock or task_rq(p)->lock.
24 */
25static inline struct task_struct *rt_mutex_get_top_task(struct task_struct *p)
26{
27 return p->pi_top_task;
28}
29extern void rt_mutex_setprio(struct task_struct *p, struct task_struct *pi_task);
30extern void rt_mutex_adjust_pi(struct task_struct *p);
31static inline bool tsk_is_pi_blocked(struct task_struct *tsk)
32{
33 return tsk->pi_blocked_on != NULL;
34}
35#else
36static inline struct task_struct *rt_mutex_get_top_task(struct task_struct *task)
37{
38 return NULL;
39}
40# define rt_mutex_adjust_pi(p) do { } while (0)
41static inline bool tsk_is_pi_blocked(struct task_struct *tsk)
42{
43 return false;
44}
45#endif
46
47extern void normalize_rt_tasks(void);
48
49
50/*
51 * default timeslice is 100 msecs (used only for SCHED_RR tasks).
52 * Timeslices get refilled after they expire.
53 */
54#define RR_TIMESLICE (100 * HZ / 1000)
55
56#endif /* _LINUX_SCHED_RT_H */