diff options
author | Morten Rasmussen <Morten.Rasmussen@arm.com> | 2012-09-14 14:38:14 +0100 |
---|---|---|
committer | Jon Medhurst <tixy@linaro.org> | 2013-07-17 11:12:25 +0100 |
commit | 1baaccf456ece33b8fa02f8cdf3977d6a95b393c (patch) | |
tree | 090c3c9d7de371744483b117dbe3e745f269c6f4 | |
parent | dc68bd92107d8990f4608d8f42744770fe203f7f (diff) |
ARM: sched: Setup SCHED_HMP domains
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>
-rw-r--r-- | arch/arm/kernel/topology.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c index e6e430a567c..627e14e44af 100644 --- a/arch/arm/kernel/topology.c +++ b/arch/arm/kernel/topology.c @@ -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 */ |