1 files changed, 30 insertions, 0 deletions

diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index ef5b9f6b1d42..0f9d2180be23 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -2283,6 +2283,36 @@ void __init init_sched_dl_class(void)
                                         GFP_KERNEL, cpu_to_node(i));
 }
 
+void dl_add_task_root_domain(struct task_struct *p)
+{
+        struct rq_flags rf;
+        struct rq *rq;
+        struct dl_bw *dl_b;
+
+        rq = task_rq_lock(p, &rf);
+        if (!dl_task(p))
+                goto unlock;
+
+        dl_b = &rq->rd->dl_bw;
+        raw_spin_lock(&dl_b->lock);
+
+        __dl_add(dl_b, p->dl.dl_bw, cpumask_weight(rq->rd->span));
+
+        raw_spin_unlock(&dl_b->lock);
+
+unlock:
+        task_rq_unlock(rq, p, &rf);
+}
+
+void dl_clear_root_domain(struct root_domain *rd)
+{
+        unsigned long flags;
+
+        raw_spin_lock_irqsave(&rd->dl_bw.lock, flags);
+        rd->dl_bw.total_bw = 0;
+        raw_spin_unlock_irqrestore(&rd->dl_bw.lock, flags);
+}
+
 #endif /* CONFIG_SMP */
 
 static void switched_from_dl(struct rq *rq, struct task_struct *p)