Merge "sched/core_ctl : make assisting more stringent"

	int need = 0;

	int cpu;

	struct cluster_data *prev_cluster;

	unsigned int prev_cluster_available_cpus;

	if (index == 0)

		return 0;

	index--;

	prev_cluster = &cluster_state[index];

	prev_cluster_available_cpus = prev_cluster->active_cpus +

					prev_cluster->nr_isolated_cpus;

	/*

	 * Next cluster should not assist, while there are isolated cpus

	 * in this cluster.

	 */

	if (prev_cluster->nr_isolated_cpus)

		return 0;

	for_each_cpu(cpu, &prev_cluster->cpu_mask)

		need += nr_stats[cpu].nr;

	need += compute_prev_cluster_misfit_need(index);

	if (need > prev_cluster_available_cpus)

		need = need - prev_cluster_available_cpus;

	if (need > prev_cluster->active_cpus)

		need = need - prev_cluster->active_cpus;

	else

		need = 0;