if (!works)
return -ENOMEM;
- mutex_lock(&workqueue_mutex);
+ preempt_disable(); /* CPU hotplug */
for_each_online_cpu(cpu) {
struct work_struct *work = per_cpu_ptr(works, cpu);
set_bit(WORK_STRUCT_PENDING, work_data_bits(work));
__queue_work(per_cpu_ptr(keventd_wq->cpu_wq, cpu), work);
}
- mutex_unlock(&workqueue_mutex);
+ preempt_enable();
flush_workqueue(keventd_wq);
free_percpu(works);
return 0;