linux-kernel - [PATCH tip/core/rcu 14/18] rcu/nocb: Remove obsolete nocb_gp_head and nocb_gp

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Message-Id: <20190801230810.21570-14-paulmck@linux.ibm.com>
Date:   Thu,  1 Aug 2019 16:08:06 -0700
From:   "Paul E. McKenney" <paulmck@...ux.ibm.com>
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, mingo@...nel.org,
        jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
        rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
        fweisbec@...il.com, oleg@...hat.com, joel@...lfernandes.org,
        "Paul E. McKenney" <paulmck@...ux.ibm.com>
Subject: [PATCH tip/core/rcu 14/18] rcu/nocb: Remove obsolete nocb_gp_head and nocb_gp_tail fields

Signed-off-by: Paul E. McKenney <paulmck@...ux.ibm.com>
---
 kernel/rcu/tree.h | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index 6e4cf7de303f..c12e85c12310 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -201,10 +201,8 @@ struct rcu_data {
 	struct timer_list nocb_timer;	/* Enforce finite deferral. */
 
 	/* The following fields are used by GP kthread, hence own cacheline. */
-	struct rcu_head *nocb_gp_head ____cacheline_internodealigned_in_smp;
-					/* CBs waiting for GP. */
-	struct rcu_head **nocb_gp_tail;
-	bool nocb_gp_sleep;		/* Is the nocb GP thread asleep? */
+	bool nocb_gp_sleep ____cacheline_internodealigned_in_smp;
+					/* Is the nocb GP thread asleep? */
 	struct swait_queue_head nocb_gp_wq; /* For nocb kthreads to sleep on. */
 	bool nocb_cb_sleep;		/* Is the nocb CB thread asleep? */
 	struct task_struct *nocb_cb_kthread;
-- 
2.17.1