diff options
Diffstat (limited to 'include/linux/sched/deadline.h')
-rw-r--r-- | include/linux/sched/deadline.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/sched/deadline.h b/include/linux/sched/deadline.h new file mode 100644 index 000000000..7c83d4d5a --- /dev/null +++ b/include/linux/sched/deadline.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +/* + * SCHED_DEADLINE tasks has negative priorities, reflecting + * the fact that any of them has higher prio than RT and + * NORMAL/BATCH tasks. + */ + +#include <linux/sched.h> + +#define MAX_DL_PRIO 0 + +static inline int dl_prio(int prio) +{ + if (unlikely(prio < MAX_DL_PRIO)) + return 1; + return 0; +} + +static inline int dl_task(struct task_struct *p) +{ + return dl_prio(p->prio); +} + +static inline bool dl_time_before(u64 a, u64 b) +{ + return (s64)(a - b) < 0; +} + +#ifdef CONFIG_SMP + +struct root_domain; +extern void dl_add_task_root_domain(struct task_struct *p); +extern void dl_clear_root_domain(struct root_domain *rd); + +#endif /* CONFIG_SMP */ |