mirror of https://gitee.com/openkylin/linux.git
[S390] topology: fix cpu masks for topology=off case
Fix cpu masks for 'topology=off' case. Folding of the scheduling domains
happen in such a way that everything belongs to the MC domain instead
of the CPU doimain.
This should fix a performance regression introduced with
eafd2b6d
"[S390] topology: use default MC domain initializer" and also
makes sure we have the same behavious as if CONFIG_SCHED_MC was not
selected at all.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -53,8 +53,10 @@ static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu)
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cpumask_t mask;
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cpus_clear(mask);
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if (!topology_enabled || !MACHINE_HAS_TOPOLOGY)
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return cpu_possible_map;
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if (!topology_enabled || !MACHINE_HAS_TOPOLOGY) {
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cpumask_copy(&mask, cpumask_of(cpu));
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return mask;
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}
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while (info) {
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if (cpu_isset(cpu, info->mask)) {
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mask = info->mask;
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