rcu/nocb: Remove halfway (de-)offloading handling from bypass

Bypass enqueue can't happen anymore in the middle of (de-)offloading
since this sort of transition now only applies to offline CPUs.

The related safety check can therefore be removed.

Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org>

diff --git a/kernel/rcu/tree_nocb.h b/kernel/rcu/tree_nocb.h
index 8e766396df3ad673c1cb5b255a1de95d37656639..af44e75eb0cd9ea2b2e3771505f56c5939ef3351 100644 (file)
--- a/kernel/rcu/tree_nocb.h
+++ b/kernel/rcu/tree_nocb.h
@@ -409,14 +409,6 @@ static bool rcu_nocb_try_bypass(struct rcu_data *rdp, struct rcu_head *rhp,
                return false;
        }
 
-       // In the process of (de-)offloading: no bypassing, but
-       // locking.
-       if (!rcu_segcblist_completely_offloaded(&rdp->cblist)) {
-               rcu_nocb_lock(rdp);
-               *was_alldone = !rcu_segcblist_pend_cbs(&rdp->cblist);
-               return false; /* Not offloaded, no bypassing. */
-       }
-
        // Don't use ->nocb_bypass during early boot.
        if (rcu_scheduler_active != RCU_SCHEDULER_RUNNING) {
                rcu_nocb_lock(rdp);