1 files changed, 3 insertions, 0 deletions

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 96a9ecec699b..8e534a05e3ed 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2744,6 +2744,9 @@ select_task_rq_fair(struct task_struct *p, int sd_flag, int wake_flags)
         int want_sd = 1;
         int sync = wake_flags & WF_SYNC;
 
+        if (p->rt.nr_cpus_allowed == 1)
+                return prev_cpu;
+
         if (sd_flag & SD_BALANCE_WAKE) {
                 if (cpumask_test_cpu(cpu, tsk_cpus_allowed(p)))
                         want_affine = 1;