From d2e7f55ff2e3d878a63149c90b360cbec101a83e Mon Sep 17 00:00:00 2001
From: Frederic Weisbecker <frederic@kernel.org>
Date: Thu, 30 May 2024 15:45:47 +0200
Subject: [PATCH] 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>
---
kernel/rcu/tree_nocb.h | 8 --------
1 file changed, 8 deletions(-)
diff --git a/kernel/rcu/tree_nocb.h b/kernel/rcu/tree_nocb.h
index 8e766396df3ad..af44e75eb0cd9 100644
--- 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);
--
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