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>
diff --git a/kernel/padata.c b/kernel/padata.c
index 5fa6ba6..fc9f19a 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -358,17 +358,15 @@
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 @@
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;
