Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
13static inline bool dl_prio(int prio)
14{
15 return unlikely(prio < MAX_DL_PRIO);
16}
17
18/*
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 ignore PI-boosted tasks.
21 */
22static inline bool 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 */