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Subject[tip:locking/urgent] locking/lockdep: Fix print_collision() unused warning
Commit-ID:  5c8a010c2411729a07cb1b90c09fa978ac0ac6c0
Gitweb: http://git.kernel.org/tip/5c8a010c2411729a07cb1b90c09fa978ac0ac6c0
Author: Borislav Petkov <bp@suse.de>
AuthorDate: Mon, 4 Apr 2016 10:42:07 +0200
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Mon, 4 Apr 2016 11:41:34 +0200

locking/lockdep: Fix print_collision() unused warning

Fix this:

kernel/locking/lockdep.c:2051:13: warning: ‘print_collision’ defined but not used [-Wunused-function]
static void print_collision(struct task_struct *curr,
^

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1459759327-2880-1-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
kernel/locking/lockdep.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 2324ba5..ed94109 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -1999,6 +1999,7 @@ static inline int get_first_held_lock(struct task_struct *curr,
return ++i;
}

+#ifdef CONFIG_DEBUG_LOCKDEP
/*
* Returns the next chain_key iteration
*/
@@ -2069,6 +2070,7 @@ static void print_collision(struct task_struct *curr,
printk("\nstack backtrace:\n");
dump_stack();
}
+#endif

/*
* Checks whether the chain and the current held locks are consistent
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