rcu: Simplify rcutorture_get_gp_data()

This commit restructures rcutorture_get_gp_data() to take advantage of
the fact that there is only one flavor of RCU.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 46a3299..254c783 100644 (file)
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -597,21 +597,16 @@ EXPORT_SYMBOL_GPL(show_rcu_gp_kthreads);
 void rcutorture_get_gp_data(enum rcutorture_type test_type, int *flags,
                            unsigned long *gp_seq)
 {
-       struct rcu_state *rsp = NULL;
-
        switch (test_type) {
        case RCU_FLAVOR:
        case RCU_BH_FLAVOR:
        case RCU_SCHED_FLAVOR:
-               rsp = &rcu_state;
+               *flags = READ_ONCE(rcu_state.gp_flags);
+               *gp_seq = rcu_seq_current(&rcu_state.gp_seq);
                break;
        default:
                break;
        }
-       if (rsp == NULL)
-               return;
-       *flags = READ_ONCE(rsp->gp_flags);
-       *gp_seq = rcu_seq_current(&rsp->gp_seq);
 }
 EXPORT_SYMBOL_GPL(rcutorture_get_gp_data);