[PATCH] rcu/tree_exp: cleanup initialized but not used rdp

[Jiang Biao]

rdp is initialized but never used in synchronize_rcu_expedited(),
just remove it.

Signed-off-by: Jiang Biao <benbji...@tencent.com>
---
 kernel/rcu/tree_exp.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h
index 4c2a0189e748..5772612379e4 100644
--- a/kernel/rcu/tree_exp.h
+++ b/kernel/rcu/tree_exp.h
@@ -733,7 +733,6 @@ static void sync_sched_exp_online_cleanup(int cpu)
  */
 void synchronize_rcu_expedited(void)
 {
-       struct rcu_data *rdp;
        struct rcu_exp_work rew;
        struct rcu_node *rnp;
        unsigned long s;
@@ -770,7 +769,6 @@ 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));
-- 
2.17.2 (Apple Git-113)