Messages in this thread Patch in this message | | | Date | Thu, 29 Apr 2010 14:41:36 +0200 | From | Steffen Klassert <> | Subject | [PATCH 4/8] padata: Initialize the padata queues only for the used cpus |
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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> --- kernel/padata.c | 14 +++++--------- 1 files changed, 5 insertions(+), 9 deletions(-)
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 @@ 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; -- 1.5.6.5
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