linux-kernel - [PATCH] rcu-tasks: Remove unused trc

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Message-Id: <20220610062228.2185104-1-qiang1.zhang@intel.com>
Date:   Fri, 10 Jun 2022 14:22:28 +0800
From:   Zqiang <qiang1.zhang@...el.com>
To:     paulmck@...nel.org, frederic@...nel.org
Cc:     rcu@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] rcu-tasks: Remove unused trc_wait and holdouts

Remove unused trc_wait waitqueue and local holdouts list.

Signed-off-by: Zqiang <qiang1.zhang@...el.com>
---
 kernel/rcu/tasks.h | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h
index 55e76db8b0d3..fcbd0ec33c86 100644
--- a/kernel/rcu/tasks.h
+++ b/kernel/rcu/tasks.h
@@ -1190,8 +1190,6 @@ EXPORT_SYMBOL_GPL(rcu_trace_lock_map);
 
 #ifdef CONFIG_TASKS_TRACE_RCU
 
-static DECLARE_WAIT_QUEUE_HEAD(trc_wait);	// List of holdout tasks.
-
 // Record outstanding IPIs to each CPU.  No point in sending two...
 static DEFINE_PER_CPU(bool, trc_ipi_to_cpu);
 
@@ -1641,7 +1639,6 @@ static void rcu_tasks_trace_empty_fn(void *unused)
 static void rcu_tasks_trace_postgp(struct rcu_tasks *rtp)
 {
 	int cpu;
-	LIST_HEAD(holdouts);
 
 	// Wait for any lingering IPI handlers to complete.  Note that
 	// if a CPU has gone offline or transitioned to userspace in the
-- 
2.25.1