Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   paulmck@kernel.org
To:     rcu@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org, kernel-team@fb.com, mingo@kernel.org,
        jiangshanlai@gmail.com, dipankar@in.ibm.com,
        akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
        josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
        rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
        fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org,
        "Paul E. McKenney" <paulmck@kernel.org>
Subject: [PATCH tip/core/rcu 15/26] rcu: Remove initialized but unused rnp from check_slow_task()
Date:   Mon, 22 Jun 2020 17:21:36 -0700
Message-Id: <20200623002147.25750-15-paulmck@kernel.org>
In-Reply-To: <20200623002128.GA25456@paulmck-ThinkPad-P72>
References: <20200623002128.GA25456@paulmck-ThinkPad-P72>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

From: "Paul E. McKenney" <paulmck@kernel.org>

This commit removes the variable rnp from check_slow_task(), which
is defined, assigned to, but not otherwise used.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 kernel/rcu/tree_stall.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/rcu/tree_stall.h b/kernel/rcu/tree_stall.h
index 2768ce6..d203f82 100644
--- a/kernel/rcu/tree_stall.h
+++ b/kernel/rcu/tree_stall.h
@@ -237,14 +237,12 @@ struct rcu_stall_chk_rdr {
  */
 static bool check_slow_task(struct task_struct *t, void *arg)
 {
-	struct rcu_node *rnp;
 	struct rcu_stall_chk_rdr *rscrp = arg;
 
 	if (task_curr(t))
 		return false; // It is running, so decline to inspect it.
 	rscrp->nesting = t->rcu_read_lock_nesting;
 	rscrp->rs = t->rcu_read_unlock_special;
-	rnp = t->rcu_blocked_node;
 	rscrp->on_blkd_list = !list_empty(&t->rcu_node_entry);
 	return true;
 }
-- 
2.9.5