lockdep: Use "WARNING" tag on lockdep splats

This commit changes lockdep splats to begin lines with "WARNING" and
to use pr_warn() instead of printk().  This change eases scripted
analysis of kernel console output.

Reported-by: Dmitry Vyukov <dvyukov@google.com>
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

1 files changed, 5 insertions, 4 deletions

diff --git a/kernel/locking/rtmutex-debug.c b/kernel/locking/rtmutex-debug.c
index 97ee9df32e0f..db4f55211b04 100644
--- a/kernel/locking/rtmutex-debug.c
+++ b/kernel/locking/rtmutex-debug.c
@@ -102,10 +102,11 @@ void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter)
                 return;
         }
 
-        printk("\n============================================\n");
-        printk(  "[ BUG: circular locking deadlock detected! ]\n");
-        printk("%s\n", print_tainted());
-        printk(  "--------------------------------------------\n");
+        pr_warn("\n");
+        pr_warn("============================================\n");
+        pr_warn("WARNING: circular locking deadlock detected!\n");
+        pr_warn("%s\n", print_tainted());
+        pr_warn("--------------------------------------------\n");
         printk("%s/%d is deadlocking current task %s/%d\n\n",
                task->comm, task_pid_nr(task),
                current->comm, task_pid_nr(current));