From: Andrew Morton <akpm@osdl.org>

kernel/workqueue.c: In function 'run_workqueue':
kernel/workqueue.c:233: warning: implicit declaration of function 'debug_show_held_locks'

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 kernel/workqueue.c |    1 +
 1 file changed, 1 insertion(+)

diff -puN include/linux/lockdep.h~debug-workqueue-locking-sanity-fix include/linux/lockdep.h
diff -puN kernel/workqueue.c~debug-workqueue-locking-sanity-fix kernel/workqueue.c
--- a/kernel/workqueue.c~debug-workqueue-locking-sanity-fix
+++ a/kernel/workqueue.c
@@ -30,6 +30,7 @@
 #include <linux/hardirq.h>
 #include <linux/mempolicy.h>
 #include <linux/kallsyms.h>
+#include <linux/debug_locks.h>
 
 /*
  * The per-CPU workqueue (if single thread, we always use the first
_