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sched: hmp: Make idle balance behaviour normal when packing disabled

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The presence of packing permanently changed the idle balance
behaviour. Do not restrict idle balance on the smallest CPUs when
packing is present but disabled.

Signed-off-by: Chris Redpath <chris.redpath@arm.com>
Signed-off-by: Jon Medhurst <tixy@linaro.org>
This commit is contained in:
Chris Redpath
2014-01-09 10:38:54 +00:00
committed by Jon Medhurst
parent 7896b1e659
commit 257e5075a1
1 changed files with 4 additions and 0 deletions
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4
kernel/sched/fair.c
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@@ -6350,6 +6350,10 @@ static int hmp_packing_ilb_needed(int cpu)
if (!hmp_cpu_is_slowest(cpu))
return 1;
/* if disabled, use normal ILB behaviour */
if (!hmp_packing_enabled)
return 1;
hmp = hmp_cpu_domain(cpu);
for_each_cpu_and(cpu, &hmp->cpus, nohz.idle_cpus_mask) {
/* only idle balance if a CPU is loaded over threshold */