rcu: Remove unused rdp local from synchronize_rcu_expedited()

Because rdp is initialized but never used in synchronize_rcu_expedited(),
this commit removes it.

Signed-off-by: Jiang Biao <benbjiang@tencent.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h
index e0c928d04be5..8e539710721a 100644
--- a/kernel/rcu/tree_exp.h
+++ b/kernel/rcu/tree_exp.h
@@ -793,7 +793,6 @@ static int rcu_print_task_exp_stall(struct rcu_node *rnp)
  */
 void synchronize_rcu_expedited(void)
 {
-        struct rcu_data *rdp;
         struct rcu_exp_work rew;
         struct rcu_node *rnp;
         unsigned long s;
@@ -830,7 +829,6 @@ void synchronize_rcu_expedited(void)
         }
 
         /* Wait for expedited grace period to complete. */
-        rdp = per_cpu_ptr(&rcu_data, raw_smp_processor_id());
         rnp = rcu_get_root();
         wait_event(rnp->exp_wq[rcu_seq_ctr(s) & 0x3],
                    sync_exp_work_done(s));