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ARM: sched: Setup SCHED_HMP domains

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SCHED_HMP requires the different cpu types to be represented by an
ordered list of hmp_domains. Each hmp_domain represents all cpus of
a particular type using a cpumask.

The list is platform specific and therefore must be generated by
platform code by implementing arch_get_hmp_domains().

Signed-off-by: Morten Rasmussen <Morten.Rasmussen@arm.com>
This commit is contained in:
Morten Rasmussen
2012-09-14 14:38:14 +01:00
committed by Jon Medhurst
parent dc68bd9210
commit 1baaccf456
1 changed files with 22 additions and 0 deletions
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22
arch/arm/kernel/topology.c
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@@ -355,6 +355,28 @@ void __init arch_get_fast_and_slow_cpus(struct cpumask *fast,
cpumask_clear(slow);
}
void __init arch_get_hmp_domains(struct list_head *hmp_domains_list)
{
struct cpumask hmp_fast_cpu_mask;
struct cpumask hmp_slow_cpu_mask;
struct hmp_domain *domain;
arch_get_fast_and_slow_cpus(&hmp_fast_cpu_mask, &hmp_slow_cpu_mask);
/*
* Initialize hmp_domains
* Must be ordered with respect to compute capacity.
* Fastest domain at head of list.
*/
domain = (struct hmp_domain *)
kmalloc(sizeof(struct hmp_domain), GFP_KERNEL);
cpumask_copy(&domain->cpus, &hmp_slow_cpu_mask);
list_add(&domain->hmp_domains, hmp_domains_list);
domain = (struct hmp_domain *)
kmalloc(sizeof(struct hmp_domain), GFP_KERNEL);
cpumask_copy(&domain->cpus, &hmp_fast_cpu_mask);
list_add(&domain->hmp_domains, hmp_domains_list);
}
#endif /* CONFIG_SCHED_HMP */