linux-kernel - [tip:core/locking] lockdep: Fix BFS build

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Date:	Sun, 2 Aug 2009 13:03:28 GMT
From:	tip-bot for Ingo Molnar <mingo@...e.hu>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	a.p.zijlstra@...llo.nl, tglx@...utronix.de, tom.leiming@...il.com,
	mingo@...e.hu
Subject: [tip:core/locking] lockdep: Fix BFS build

Commit-ID:  bbfa26229a8143889e95e0df4a9d69067ee836cd
Gitweb:     http://git.kernel.org/tip/bbfa26229a8143889e95e0df4a9d69067ee836cd
Author:     Ingo Molnar <mingo@...e.hu>
AuthorDate: Sun, 2 Aug 2009 14:44:24 +0200
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Sun, 2 Aug 2009 14:51:06 +0200

lockdep: Fix BFS build

Fix:

  kernel/built-in.o: In function `lockdep_stats_show':
  lockdep_proc.c:(.text+0x48202): undefined reference to `max_bfs_queue_depth'

As max_bfs_queue_depth is only available under
CONFIG_PROVE_LOCKING=y.

Cc: Ming Lei <tom.leiming@...il.com>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 kernel/lockdep_proc.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/kernel/lockdep_proc.c b/kernel/lockdep_proc.c
index 9a1bf34..fba81f1 100644
--- a/kernel/lockdep_proc.c
+++ b/kernel/lockdep_proc.c
@@ -411,8 +411,10 @@ static int lockdep_stats_show(struct seq_file *m, void *v)
 			max_lockdep_depth);
 	seq_printf(m, " max recursion depth:           %11u\n",
 			max_recursion_depth);
+#ifdef CONFIG_PROVE_LOCKING
 	seq_printf(m, " max bfs queue depth:           %11u\n",
 			max_bfs_queue_depth);
+#endif
 	lockdep_stats_debug_show(m);
 	seq_printf(m, " debug_locks:                   %11u\n",
 			debug_locks);
--
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