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- /* 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);
- #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)
- #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 */
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