1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _LINUX_SCHED_DEADLINE_H 3#define _LINUX_SCHED_DEADLINE_H 4 5/* 6 * SCHED_DEADLINE tasks has negative priorities, reflecting 7 * the fact that any of them has higher prio than RT and 8 * NORMAL/BATCH tasks. 9 */ 10 11#include <linux/sched.h> 12 13#define MAX_DL_PRIO 0 14 15static inline int dl_prio(int prio) 16{ 17 if (unlikely(prio < MAX_DL_PRIO)) 18 return 1; 19 return 0; 20} 21 22static inline int dl_task(struct task_struct *p) 23{ 24 return dl_prio(p->prio); 25} 26 27static inline bool dl_time_before(u64 a, u64 b) 28{ 29 return (s64)(a - b) < 0; 30} 31 32#ifdef CONFIG_SMP 33 34struct root_domain; 35extern void dl_add_task_root_domain(struct task_struct *p); 36extern void dl_clear_root_domain(struct root_domain *rd); 37 38#endif /* CONFIG_SMP */ 39 40#endif /* _LINUX_SCHED_DEADLINE_H */ 41