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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2010-04-29 14:41:36 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2010-05-03 11:32:11 +0800 |
| commit | 7b389b2cc539dc2dc60b049240942be54958c93a (patch) | |
| tree | 7ab93b0052445c147d88c4479d7b0994769c671c /kernel/padata.c | |
| parent | 7d0d2d385ca7cc511f7d1c64735a1b4aaefd9a1b (diff) | |
| download | lwn-7b389b2cc539dc2dc60b049240942be54958c93a.tar.gz lwn-7b389b2cc539dc2dc60b049240942be54958c93a.zip | |
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/padata.c')
| -rw-r--r-- | kernel/padata.c | 14 |
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; |