This removes the second use of the sched_core_mask temporary mask.
Suggested-by: Yury Norov <yury.norov@gmail.com>
Signed-off-by: Valentin Schneider <vschneid@redhat.com>
        /*
         * Toggle the offline CPUs.
         */
-       cpumask_copy(&sched_core_mask, cpu_possible_mask);
-       cpumask_andnot(&sched_core_mask, &sched_core_mask, cpu_online_mask);
-
-       for_each_cpu(cpu, &sched_core_mask)
+       for_each_cpu_andnot(cpu, cpu_possible_mask, cpu_online_mask)
                cpu_rq(cpu)->core_enabled = enabled;
 
        cpus_read_unlock();