diff options
| author | Gabriele Monaco <gmonaco@redhat.com> | 2026-03-30 13:10:09 +0200 |
|---|---|---|
| committer | Gabriele Monaco <gmonaco@redhat.com> | 2026-03-31 16:47:17 +0200 |
| commit | c85dbddad705babfbddfef182495994f7f5262c9 (patch) | |
| tree | 7d3ad1b9c77bf736db6d0520b778bf572b6cb5e2 /include/linux/sched | |
| parent | 820725b0eb59f6011e379cc526ae90a6f3efeb50 (diff) | |
sched/deadline: Move some utility functions to deadline.h
Some utility functions on sched_dl_entity can be useful outside of
deadline.c , for instance for modelling, without relying on raw
structure fields.
Move functions like dl_task_of and dl_is_implicit to deadline.h to make
them available outside.
Acked-by: Juri Lelli <juri.lelli@redhat.com>
Link: https://lore.kernel.org/r/20260330111010.153663-12-gmonaco@redhat.com
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
Diffstat (limited to 'include/linux/sched')
| -rw-r--r-- | include/linux/sched/deadline.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/linux/sched/deadline.h b/include/linux/sched/deadline.h index c40115d4e34d..1198138cb839 100644 --- a/include/linux/sched/deadline.h +++ b/include/linux/sched/deadline.h @@ -37,4 +37,31 @@ extern void dl_clear_root_domain_cpu(int cpu); extern u64 dl_cookie; extern bool dl_bw_visited(int cpu, u64 cookie); +static inline bool dl_server(struct sched_dl_entity *dl_se) +{ + return dl_se->dl_server; +} + +static inline struct task_struct *dl_task_of(struct sched_dl_entity *dl_se) +{ + BUG_ON(dl_server(dl_se)); + return container_of(dl_se, struct task_struct, dl); +} + +/* + * Regarding the deadline, a task with implicit deadline has a relative + * deadline == relative period. A task with constrained deadline has a + * relative deadline <= relative period. + * + * We support constrained deadline tasks. However, there are some restrictions + * applied only for tasks which do not have an implicit deadline. See + * update_dl_entity() to know more about such restrictions. + * + * The dl_is_implicit() returns true if the task has an implicit deadline. + */ +static inline bool dl_is_implicit(struct sched_dl_entity *dl_se) +{ + return dl_se->dl_deadline == dl_se->dl_period; +} + #endif /* _LINUX_SCHED_DEADLINE_H */ |