linux-kernel - [PATCH 10/11] rcu/nocb: Remove SEGCBLIST_KTHREAD

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Date: Thu, 30 May 2024 15:45:51 +0200
From: Frederic Weisbecker <frederic@...nel.org>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Frederic Weisbecker <frederic@...nel.org>,
	Boqun Feng <boqun.feng@...il.com>,
	Joel Fernandes <joel@...lfernandes.org>,
	Neeraj Upadhyay <neeraj.upadhyay@....com>,
	"Paul E . McKenney" <paulmck@...nel.org>,
	Uladzislau Rezki <urezki@...il.com>,
	Zqiang <qiang.zhang1211@...il.com>,
	rcu <rcu@...r.kernel.org>
Subject: [PATCH 10/11] rcu/nocb: Remove SEGCBLIST_KTHREAD_CB

This state excerpt from the (de-)offloading state machine was used to
implement an ad-hoc kthread parking of rcuo kthreads. This code has
been removed and therefore the related state can be erased as well.

Signed-off-by: Frederic Weisbecker <frederic@...nel.org>
---
 include/linux/rcu_segcblist.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/include/linux/rcu_segcblist.h b/include/linux/rcu_segcblist.h
index 5469c54cd778..1ef1bb54853d 100644
--- a/include/linux/rcu_segcblist.h
+++ b/include/linux/rcu_segcblist.h
@@ -186,9 +186,8 @@ struct rcu_cblist {
  */
 #define SEGCBLIST_ENABLED	BIT(0)
 #define SEGCBLIST_LOCKING	BIT(1)
-#define SEGCBLIST_KTHREAD_CB	BIT(2)
-#define SEGCBLIST_KTHREAD_GP	BIT(3)
-#define SEGCBLIST_OFFLOADED	BIT(4)
+#define SEGCBLIST_KTHREAD_GP	BIT(2)
+#define SEGCBLIST_OFFLOADED	BIT(3)
 
 struct rcu_segcblist {
 	struct rcu_head *head;
-- 
2.45.1