Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
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 */