diff options
| author | Chris Redpath <chris.redpath@arm.com> | 2013-05-16 17:48:24 +0100 |
|---|---|---|
| committer | Jon Medhurst <tixy@linaro.org> | 2013-07-17 11:12:26 +0100 |
| commit | b64cc6f7e54b97536dbecc05d193b31b27feecf1 (patch) | |
| tree | f1000fa95e5501404f6369343178d43d95434df3 /arch/arm | |
| parent | d2c920023cbc456414f8e07ff253a89be535b41b (diff) | |
sched: Ignore offline CPUs in HMP migration & load stats
Previously, an offline CPU would always appear to have a zero load
and this would distort the offload functionality used for balancing
big and little domains.
Maintain a mask of online CPUs in each domain and use this instead.
Change-Id: I639b564b2f40cb659af8ceb8bd37f84b8a1fe323
Signed-off-by: Chris Redpath <chris.redpath@arm.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/kernel/topology.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c index f2ca9e030808..9047dd1c5a12 100644 --- a/arch/arm/kernel/topology.c +++ b/arch/arm/kernel/topology.c @@ -383,12 +383,14 @@ void __init arch_get_hmp_domains(struct list_head *hmp_domains_list) if(!cpumask_empty(&hmp_slow_cpu_mask)) { domain = (struct hmp_domain *) kmalloc(sizeof(struct hmp_domain), GFP_KERNEL); - cpumask_copy(&domain->cpus, &hmp_slow_cpu_mask); + cpumask_copy(&domain->possible_cpus, &hmp_slow_cpu_mask); + cpumask_and(&domain->cpus, cpu_online_mask, &domain->possible_cpus); 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); + cpumask_copy(&domain->possible_cpus, &hmp_fast_cpu_mask); + cpumask_and(&domain->cpus, cpu_online_mask, &domain->possible_cpus); list_add(&domain->hmp_domains, hmp_domains_list); } #endif /* CONFIG_SCHED_HMP */ |