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authorSteffen Klassert <steffen.klassert@secunet.com>2010-04-29 14:41:36 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2010-05-03 11:32:11 +0800
commit7b389b2cc539dc2dc60b049240942be54958c93a (patch)
tree7ab93b0052445c147d88c4479d7b0994769c671c /kernel
parent7d0d2d385ca7cc511f7d1c64735a1b4aaefd9a1b (diff)
downloadlinux-7b389b2cc539dc2dc60b049240942be54958c93a.tar.bz2
padata: Initialize the padata queues only for the used cpus
padata_alloc_pd set up queues for all possible cpus. This patch changes this to set up the queues just for the used cpus. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/padata.c14
1 files changed, 5 insertions, 9 deletions
diff --git a/kernel/padata.c b/kernel/padata.c
index 5fa6ba6f11bd..fc9f19a00ae4 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -358,17 +358,15 @@ static struct parallel_data *padata_alloc_pd(struct padata_instance *pinst,
if (!alloc_cpumask_var(&pd->cpumask, GFP_KERNEL))
goto err_free_queue;
- for_each_possible_cpu(cpu) {
+ cpumask_and(pd->cpumask, cpumask, cpu_active_mask);
+
+ for_each_cpu(cpu, pd->cpumask) {
queue = per_cpu_ptr(pd->queue, cpu);
queue->pd = pd;
- if (cpumask_test_cpu(cpu, cpumask)
- && cpumask_test_cpu(cpu, cpu_active_mask)) {
- queue->cpu_index = cpu_index;
- cpu_index++;
- } else
- queue->cpu_index = -1;
+ queue->cpu_index = cpu_index;
+ cpu_index++;
INIT_LIST_HEAD(&queue->reorder.list);
INIT_LIST_HEAD(&queue->parallel.list);
@@ -382,8 +380,6 @@ static struct parallel_data *padata_alloc_pd(struct padata_instance *pinst,
atomic_set(&queue->num_obj, 0);
}
- cpumask_and(pd->cpumask, cpumask, cpu_active_mask);
-
num_cpus = cpumask_weight(pd->cpumask);
pd->max_seq_nr = (MAX_SEQ_NR / num_cpus) * num_cpus - 1;