linux-kernel - [tip:locking/core] locking/lockdep: Hide unused 'class' variable

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Message-ID: <tip-68037aa78208f34bda4e5cd76c357f718b838cbb@git.kernel.org>
Date:   Thu, 25 Jul 2019 09:03:26 -0700
From:   tip-bot for Arnd Bergmann <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     cai@....pw, akpm@...ux-foundation.org, will@...nel.org,
        tglx@...utronix.de, mingo@...nel.org, paulmck@...ux.vnet.ibm.com,
        bvanassche@....org, arnd@...db.de, linux-kernel@...r.kernel.org,
        peterz@...radead.org, will.deacon@....com,
        torvalds@...ux-foundation.org, hpa@...or.com, longman@...hat.com,
        duyuyang@...il.com
Subject: [tip:locking/core] locking/lockdep: Hide unused 'class' variable

Commit-ID:  68037aa78208f34bda4e5cd76c357f718b838cbb
Gitweb:     https://git.kernel.org/tip/68037aa78208f34bda4e5cd76c357f718b838cbb
Author:     Arnd Bergmann <arnd@...db.de>
AuthorDate: Mon, 15 Jul 2019 11:27:49 +0200
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Thu, 25 Jul 2019 15:39:25 +0200

locking/lockdep: Hide unused 'class' variable

The usage is now hidden in an #ifdef, so we need to move
the variable itself in there as well to avoid this warning:

  kernel/locking/lockdep_proc.c:203:21: error: unused variable 'class' [-Werror,-Wunused-variable]

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Bart Van Assche <bvanassche@....org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Qian Cai <cai@....pw>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Waiman Long <longman@...hat.com>
Cc: Will Deacon <will.deacon@....com>
Cc: Will Deacon <will@...nel.org>
Cc: Yuyang Du <duyuyang@...il.com>
Cc: frederic@...nel.org
Fixes: 68d41d8c94a3 ("locking/lockdep: Fix lock used or unused stats error")
Link: https://lkml.kernel.org/r/20190715092809.736834-1-arnd@arndb.de
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 kernel/locking/lockdep_proc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/locking/lockdep_proc.c b/kernel/locking/lockdep_proc.c
index 65b6a1600c8f..bda006f8a88b 100644
--- a/kernel/locking/lockdep_proc.c
+++ b/kernel/locking/lockdep_proc.c
@@ -200,7 +200,6 @@ static void lockdep_stats_debug_show(struct seq_file *m)
 
 static int lockdep_stats_show(struct seq_file *m, void *v)
 {
-	struct lock_class *class;
 	unsigned long nr_unused = 0, nr_uncategorized = 0,
 		      nr_irq_safe = 0, nr_irq_unsafe = 0,
 		      nr_softirq_safe = 0, nr_softirq_unsafe = 0,
@@ -211,6 +210,8 @@ static int lockdep_stats_show(struct seq_file *m, void *v)
 		      sum_forward_deps = 0;
 
 #ifdef CONFIG_PROVE_LOCKING
+	struct lock_class *class;
+
 	list_for_each_entry(class, &all_lock_classes, lock_entry) {
 
 		if (class->usage_mask == 0)