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