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Commit e04e04f9 authored by qctecmdr's avatar qctecmdr Committed by Gerrit - the friendly Code Review server
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Merge "sched/fair: skip 6% energy check when best_energy_cpu is idle"

parents 6b31883f cf91ab51

kernel/sched/fair.c

+3 −1
Original line number Original line Diff line number Diff line
@@ -7806,7 +7806,9 @@ static int find_energy_efficient_cpu(struct task_struct *p, int prev_cpu, 
	 * Pick the prev CPU, if best energy CPU can't saves at least 6% of

	 * Pick the prev CPU, if best energy CPU can't saves at least 6% of

	 * the energy used by prev_cpu.

	 * the energy used by prev_cpu.

	 */

	 */

	if ((prev_energy != ULONG_MAX) && (best_energy_cpu != prev_cpu)  &&

	if (!(idle_cpu(best_energy_cpu) &&

	    idle_get_state_idx(cpu_rq(best_energy_cpu)) <= 0) &&

	    (prev_energy != ULONG_MAX) && (best_energy_cpu != prev_cpu) &&

	    ((prev_energy - best_energy) <= prev_energy >> 4))

	    ((prev_energy - best_energy) <= prev_energy >> 4))

		best_energy_cpu = prev_cpu;

		best_energy_cpu = prev_cpu;