[PATCH 4/4] sched/core: fix unbalance set_rq_online/offline() in sched_cpu_deactivate()

[Yang Yingliang]

From: Yang Yingliang <yangyingliang@xxxxxxxxxx>

If cpuset_cpu_inactive() fails, set_rq_online() need be called to rollback.

Fixes: 120455c514f7 ("sched: Fix hotplug vs CPU bandwidth control")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
---
 kernel/sched/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 2e114bce517a..01172d8bfe02 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -9781,6 +9781,7 @@ int sched_cpu_deactivate(unsigned int cpu)
 	ret = cpuset_cpu_inactive(cpu);
 	if (ret) {
 		sched_smt_present_inc(cpu);
+		sched_set_rq_online(rq, cpu);
 		balance_push_set(cpu, false);
 		set_cpu_active(cpu, true);
 		sched_update_numa(cpu, true);
-- 
2.25.1