Commit fe7a11c7 authored by Yang Yingliang's avatar Yang Yingliang Committed by Peter Zijlstra
Browse files

sched/core: Fix unbalance set_rq_online/offline() in sched_cpu_deactivate() 



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

Fixes: 120455c5 ("sched: Fix hotplug vs CPU bandwidth control")
Cc: stable@kernel.org
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20240703031610.587047-5-yangyingliang@huaweicloud.com
parent 2f027354

kernel/sched/core.c

+1 −0
Original line number Diff line number Diff line
@@ -8022,6 +8022,7 @@ 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);