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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>
This commit is contained in:
Steffen Klassert 2010-04-29 14:41:36 +02:00 committed by Herbert Xu
parent 7d0d2d385c
commit 7b389b2cc5
1 changed files with 5 additions and 9 deletions
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14
kernel/padata.c
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@ -358,17 +358,15 @@ static struct parallel_data *padata_alloc_pd(struct padata_instance *pinst,
if (!alloc_cpumask_var(&pd->cpumask, GFP_KERNEL)) if (!alloc_cpumask_var(&pd->cpumask, GFP_KERNEL))
goto err_free_queue; 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 = per_cpu_ptr(pd->queue, cpu);
queue->pd = pd; queue->pd = pd;
if (cpumask_test_cpu(cpu, cpumask) queue->cpu_index = cpu_index;
&& cpumask_test_cpu(cpu, cpu_active_mask)) { cpu_index++;
queue->cpu_index = cpu_index;
cpu_index++;
} else
queue->cpu_index = -1;
INIT_LIST_HEAD(&queue->reorder.list); INIT_LIST_HEAD(&queue->reorder.list);
INIT_LIST_HEAD(&queue->parallel.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); atomic_set(&queue->num_obj, 0);
} }
cpumask_and(pd->cpumask, cpumask, cpu_active_mask);
num_cpus = cpumask_weight(pd->cpumask); num_cpus = cpumask_weight(pd->cpumask);
pd->max_seq_nr = (MAX_SEQ_NR / num_cpus) * num_cpus - 1; pd->max_seq_nr = (MAX_SEQ_NR / num_cpus) * num_cpus - 1;