[stable-4.14 4/4] padata: purge get_cpu and reorder_via_wq from padata_do_serial

[Daniel Jordan]

[ Upstream commit 065cf577135a4977931c7a1e1edf442bfd9773dd ]

With the removal of the padata timer, padata_do_serial no longer
needs special CPU handling, so remove it.

Signed-off-by: Daniel Jordan <daniel.m.jor...@oracle.com>
Cc: Herbert Xu <herb...@gondor.apana.org.au>
Cc: Steffen Klassert <steffen.klass...@secunet.com>
Cc: linux-crypto@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Herbert Xu <herb...@gondor.apana.org.au>
Signed-off-by: Daniel Jordan <daniel.m.jor...@oracle.com>
---
 kernel/padata.c | 23 +++--------------------
 1 file changed, 3 insertions(+), 20 deletions(-)

diff --git a/kernel/padata.c b/kernel/padata.c
index 6d0cdee9d321..f56ec63f60ba 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -323,24 +323,9 @@ static void padata_serial_worker(struct work_struct 
*serial_work)
  */
 void padata_do_serial(struct padata_priv *padata)
 {
-       int cpu;
-       struct padata_parallel_queue *pqueue;
-       struct parallel_data *pd;
-       int reorder_via_wq = 0;
-
-       pd = padata->pd;
-
-       cpu = get_cpu();
-
-       /* We need to enqueue the padata object into the correct
-        * per-cpu queue.
-        */
-       if (cpu != padata->cpu) {
-               reorder_via_wq = 1;
-               cpu = padata->cpu;
-       }
-
-       pqueue = per_cpu_ptr(pd->pqueue, cpu);
+       struct parallel_data *pd = padata->pd;
+       struct padata_parallel_queue *pqueue = per_cpu_ptr(pd->pqueue,
+                                                          padata->cpu);
 
        spin_lock(&pqueue->reorder.lock);
        list_add_tail(&padata->list, &pqueue->reorder.list);
@@ -354,8 +339,6 @@ void padata_do_serial(struct padata_priv *padata)
         */
        smp_mb__after_atomic();
 
-       put_cpu();
-
        padata_reorder(pd);
 }
 EXPORT_SYMBOL(padata_do_serial);
-- 
2.26.2