padata: use __this_cpu_read per-cpu helper

For bottom halves off, __this_cpu_read is better.

Signed-off-by: Shan Wei <davidshan@tencent.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 2 insertions, 3 deletions

diff --git a/kernel/padata.c b/kernel/padata.c
index 89fe3d1b9efb..072f4ee4eb89 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -171,7 +171,7 @@ static struct padata_priv *padata_get_next(struct parallel_data *pd)
 {
         int cpu, num_cpus;
         unsigned int next_nr, next_index;
-        struct padata_parallel_queue *queue, *next_queue;
+        struct padata_parallel_queue *next_queue;
         struct padata_priv *padata;
         struct padata_list *reorder;
 
@@ -204,8 +204,7 @@ static struct padata_priv *padata_get_next(struct parallel_data *pd)
                 goto out;
         }
 
-        queue = per_cpu_ptr(pd->pqueue, smp_processor_id());
-        if (queue->cpu_index == next_queue->cpu_index) {
+        if (__this_cpu_read(pd->pqueue->cpu_index) == next_queue->cpu_index) {
                 padata = ERR_PTR(-ENODATA);
                 goto out;
         }