diff options
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 1cda787172f0..8a70d51ffa33 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -313,6 +313,33 @@ extern bool dl_param_changed(struct task_struct *p, const struct sched_attr *att extern int dl_cpuset_cpumask_can_shrink(const struct cpumask *cur, const struct cpumask *trial); extern int dl_bw_check_overflow(int cpu); +/* + * SCHED_DEADLINE supports servers (nested scheduling) with the following + * interface: + * + * dl_se::rq -- runqueue we belong to. + * + * dl_se::server_has_tasks() -- used on bandwidth enforcement; we 'stop' the + * server when it runs out of tasks to run. + * + * dl_se::server_pick() -- nested pick_next_task(); we yield the period if this + * returns NULL. + * + * dl_server_update() -- called from update_curr_common(), propagates runtime + * to the server. + * + * dl_server_start() + * dl_server_stop() -- start/stop the server when it has (no) tasks. + * + * dl_server_init() -- initializes the server. + */ +extern void dl_server_update(struct sched_dl_entity *dl_se, s64 delta_exec); +extern void dl_server_start(struct sched_dl_entity *dl_se); +extern void dl_server_stop(struct sched_dl_entity *dl_se); +extern void dl_server_init(struct sched_dl_entity *dl_se, struct rq *rq, + dl_server_has_tasks_f has_tasks, + dl_server_pick_f pick); + #ifdef CONFIG_CGROUP_SCHED struct cfs_rq; |