linux-kernel - [PATCH] srcu: remove never used variable

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Message-Id: <1519282357-17983-1-git-send-email-zhouzhouyi@gmail.com>
Date:   Thu, 22 Feb 2018 06:52:37 +0000
From:   zhouzhouyi@...il.com
To:     paulmck@...ux.vnet.ibm.com, josh@...htriplett.org,
        rostedt@...dmis.org, mathieu.desnoyers@...icios.com,
        jiangshanlai@...il.com, linux-kernel@...r.kernel.org
Cc:     Zhouyi Zhou <zhouzhouyi@...il.com>
Subject: [PATCH] srcu: remove never used variable

From: Zhouyi Zhou <zhouzhouyi@...il.com>

In function srcu_gp_end, the variable idxnext is never used after assign,
remove it and its assign statement.

Signed-off-by: Zhouyi Zhou <zhouzhouyi@...il.com>
---
 kernel/rcu/srcutree.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c
index d5cea81..1241715 100644
--- a/kernel/rcu/srcutree.c
+++ b/kernel/rcu/srcutree.c
@@ -531,7 +531,6 @@ static void srcu_gp_end(struct srcu_struct *sp)
 	unsigned long flags;
 	unsigned long gpseq;
 	int idx;
-	int idxnext;
 	unsigned long mask;
 	struct srcu_data *sdp;
 	struct srcu_node *snp;
@@ -555,7 +554,6 @@ static void srcu_gp_end(struct srcu_struct *sp)
 
 	/* Initiate callback invocation as needed. */
 	idx = rcu_seq_ctr(gpseq) % ARRAY_SIZE(snp->srcu_have_cbs);
-	idxnext = (idx + 1) % ARRAY_SIZE(snp->srcu_have_cbs);
 	rcu_for_each_node_breadth_first(sp, snp) {
 		spin_lock_irq_rcu_node(snp);
 		cbs = false;
-- 
2.1.4