linux-kernel - [PATCH rcu 03/32] rcu-tasks: Move synchronize_rcu_tasks

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Date:   Mon, 20 Jun 2022 15:53:42 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...com,
        rostedt@...dmis.org, "Paul E. McKenney" <paulmck@...nel.org>
Subject: [PATCH rcu 03/32] rcu-tasks: Move synchronize_rcu_tasks_generic() down

This is strictly a code-motion commit that moves the
synchronize_rcu_tasks_generic() down to where it can invoke
rcu_tasks_one_gp() without the need for a forward declaration.

Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 kernel/rcu/tasks.h | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h
index d7b12f524e81c..ad993c4ed924f 100644
--- a/kernel/rcu/tasks.h
+++ b/kernel/rcu/tasks.h
@@ -326,17 +326,6 @@ static void call_rcu_tasks_generic(struct rcu_head *rhp, rcu_callback_t func,
 		irq_work_queue(&rtpcp->rtp_irq_work);
 }
 
-// Wait for a grace period for the specified flavor of Tasks RCU.
-static void synchronize_rcu_tasks_generic(struct rcu_tasks *rtp)
-{
-	/* Complain if the scheduler has not started.  */
-	RCU_LOCKDEP_WARN(rcu_scheduler_active == RCU_SCHEDULER_INACTIVE,
-			 "synchronize_rcu_tasks called too soon");
-
-	/* Wait for the grace period. */
-	wait_rcu_gp(rtp->call_func);
-}
-
 // RCU callback function for rcu_barrier_tasks_generic().
 static void rcu_barrier_tasks_generic_cb(struct rcu_head *rhp)
 {
@@ -558,6 +547,17 @@ static int __noreturn rcu_tasks_kthread(void *arg)
 	}
 }
 
+// Wait for a grace period for the specified flavor of Tasks RCU.
+static void synchronize_rcu_tasks_generic(struct rcu_tasks *rtp)
+{
+	/* Complain if the scheduler has not started.  */
+	RCU_LOCKDEP_WARN(rcu_scheduler_active == RCU_SCHEDULER_INACTIVE,
+			 "synchronize_rcu_tasks called too soon");
+
+	/* Wait for the grace period. */
+	wait_rcu_gp(rtp->call_func);
+}
+
 /* Spawn RCU-tasks grace-period kthread. */
 static void __init rcu_spawn_tasks_kthread_generic(struct rcu_tasks *rtp)
 {
-- 
2.31.1.189.g2e36527f23