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authorMorten Rasmussen <Morten.Rasmussen@arm.com>2012-09-14 14:38:14 +0100
committerViresh Kumar <viresh.kumar@linaro.org>2012-10-03 16:28:55 +0530
commit98714a4b5a3661f12e9d05ce4c3e64a88d52ebaf (patch)
tree4d55a32f9d4fc53e9b05add44a301c79567bd90d
parent83faa3459182e9c586e676a7dda00ed9431a1463 (diff)
downloadvexpress-lsk-98714a4b5a3661f12e9d05ce4c3e64a88d52ebaf.tar.gz
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.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c
index 7682e125f73..ec8ad5c3a5a 100644
--- a/arch/arm/kernel/topology.c
+++ b/arch/arm/kernel/topology.c
@@ -383,6 +383,28 @@ 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 */