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Commit b21dadb9 authored by Sultan Alsawaf's avatar Sultan Alsawaf Committed by Pranav Vashi
Browse files

sched/fair: Set asym priority equally for all CPUs in a performance domain 



All CPUs in a performance domain share the same capacity, and therefore
aren't different from one another when distinguishing between which one is
better for asymmetric packing.

Instead of unfairly prioritizing lower-numbered CPUs within the same
performance domain, treat all CPUs in a performance domain equally for
asymmetric packing.

Change-Id: Ibc18d45fabc2983650ebebec910578e26bd26809
Signed-off-by: default avatarSultan Alsawaf <sultan@kerneltoast.com>
Signed-off-by: default avatarPranav Vashi <neobuddy89@gmail.com>
parent d0e4ec23

kernel/sched/fair.c

+2 −2
Original line number Diff line number Diff line
@@ -162,11 +162,11 @@ __read_mostly unsigned int sysctl_sched_walt_cpu_high_irqload = 


#ifdef CONFIG_SMP

/*

 * For asym packing, by default the lower numbered cpu has higher priority.

 * For asym packing, by default the lower max-capacity cpu has higher priority.

 */

int __weak arch_asym_cpu_priority(int cpu)

{

	return -cpu;

	return -arch_scale_cpu_capacity(NULL, cpu);

}

#endif