diff options
| -rw-r--r-- | kernel/sched/deadline.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index 1a5c42e7b076..9fa9421bb23f 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -2672,11 +2672,16 @@ bool dl_cpu_busy(unsigned int cpu) int cpus; rcu_read_lock_sched(); + overflow = !!(cpu_rq(cpu)->dl.this_bw); + if (overflow) + goto out; + dl_b = dl_bw_of(cpu); raw_spin_lock_irqsave(&dl_b->lock, flags); cpus = dl_bw_cpus(cpu); overflow = __dl_overflow(dl_b, cpus, 0, 0); raw_spin_unlock_irqrestore(&dl_b->lock, flags); +out: rcu_read_unlock_sched(); return overflow; } |