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From: "Paul E. McKenney" <paulmck@kernel.org>
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com,
	rostedt@goodmis.org, Neeraj Upadhyay <quic_neeraju@quicinc.com>,
	"Paul E . McKenney" <paulmck@kernel.org>
Subject: [PATCH rcu 03/10] rcu: Remove unused rcu_state.boost
Date: Fri,  4 Feb 2022 15:23:59 -0800	[thread overview]
Message-ID: <20220204232406.814-3-paulmck@kernel.org> (raw)
In-Reply-To: <20220204232355.GA728@paulmck-ThinkPad-P17-Gen-1>

From: Neeraj Upadhyay <quic_neeraju@quicinc.com>

Signed-off-by: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 kernel/rcu/tree.h        | 5 ++---
 kernel/rcu/tree_plugin.h | 2 --
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index 24dd4b0d805f1..e9990945483f1 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -304,9 +304,8 @@ struct rcu_state {
 
 	/* The following fields are guarded by the root rcu_node's lock. */
 
-	u8	boost ____cacheline_internodealigned_in_smp;
-						/* Subject to priority boost. */
-	unsigned long gp_seq;			/* Grace-period sequence #. */
+	unsigned long gp_seq ____cacheline_internodealigned_in_smp;
+						/* Grace-period sequence #. */
 	unsigned long gp_max;			/* Maximum GP duration in */
 						/*  jiffies. */
 	struct task_struct *gp_kthread;		/* Task for grace periods. */
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index c5b45c2f68a15..109429e70a642 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -1175,8 +1175,6 @@ static void rcu_spawn_one_boost_kthread(struct rcu_node *rnp)
 	if (rnp->boost_kthread_task || !rcu_scheduler_fully_active)
 		return;
 
-	rcu_state.boost = 1;
-
 	t = kthread_create(rcu_boost_kthread, (void *)rnp,
 			   "rcub/%d", rnp_index);
 	if (WARN_ON_ONCE(IS_ERR(t)))
-- 
2.31.1.189.g2e36527f23


  parent reply	other threads:[~2022-02-04 23:24 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-04 23:23 [PATCH rcu 0/10] Real-time-related updates for v5.18 Paul E. McKenney
2022-02-04 23:23 ` [PATCH rcu 01/10] rcu: Mark accesses to boost_starttime Paul E. McKenney
2022-02-04 23:23 ` [PATCH rcu 02/10] rcu/nocb: Handle concurrent nocb kthreads creation Paul E. McKenney
2022-02-04 23:23 ` Paul E. McKenney [this message]
2022-02-04 23:24 ` [PATCH rcu 04/10] rcu: Create per-cpu rcuc kthreads only when rcutree.use_softirq=0 Paul E. McKenney
2022-02-04 23:24 ` [PATCH rcu 05/10] rcu: Move kthread_prio bounds-check to a separate function Paul E. McKenney
2022-02-04 23:24 ` [PATCH rcu 06/10] rcu: Make priority of grace-period thread consistent Paul E. McKenney
2022-02-04 23:24 ` [PATCH rcu 07/10] rcu: Elevate priority of offloaded callback threads Paul E. McKenney
2022-02-04 23:24 ` [PATCH rcu 08/10] rcu: Update documentation regarding kthread_prio cmdline parameter Paul E. McKenney
2022-02-04 23:24 ` [PATCH rcu 09/10] rcu: Don't deboost before reporting expedited quiescent state Paul E. McKenney
2022-02-04 23:24 ` [PATCH rcu 10/10] rcu: Add per-CPU rcuc task dumps to RCU CPU stall warnings Paul E. McKenney

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