pint_collosion and helper functions are just used when DEBUG_LOCKDEP is
selected, so include them in #ifdef CONFIG_DEBUG_LOCKDEP to avoid the below
"defined but not used" warning when DEBUG_LOCKDEP is off:
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: Yang Shi <yang....@linaro.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
--
2.0.2
