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