| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | |
| 3 | /* |
| 4 | * SCHED_DEADLINE tasks has negative priorities, reflecting |
| 5 | * the fact that any of them has higher prio than RT and |
| 6 | * NORMAL/BATCH tasks. |
| 7 | */ |
| 8 | |
| 9 | #define MAX_DL_PRIO 0 |
| 10 | |
| 11 | static inline int dl_prio(int prio) |
| 12 | { |
| 13 | if (unlikely(prio < MAX_DL_PRIO)) |
| 14 | return 1; |
| 15 | return 0; |
| 16 | } |
| 17 | |
| 18 | static inline int dl_task(struct task_struct *p) |
| 19 | { |
| 20 | return dl_prio(p->prio); |
| 21 | } |
| 22 | |
| 23 | static inline bool dl_time_before(u64 a, u64 b) |
| 24 | { |
| 25 | return (s64)(a - b) < 0; |
| 26 | } |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 27 | |
| 28 | #ifdef CONFIG_SMP |
| 29 | |
| 30 | struct root_domain; |
| 31 | extern void dl_add_task_root_domain(struct task_struct *p); |
| 32 | extern void dl_clear_root_domain(struct root_domain *rd); |
| 33 | |
| 34 | #endif /* CONFIG_SMP */ |