1 files changed, 9 insertions, 1 deletions

diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index be34a6aa7e4..29a370a4558 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -465,6 +465,7 @@ lat_print_generic(struct trace_seq *s, struct trace_entry *entry, int cpu)
 {
         int hardirq, softirq;
         char comm[TASK_COMM_LEN];
+        int ret;
 
         trace_find_cmdline(entry->pid, comm);
         hardirq = entry->flags & TRACE_FLAG_HARDIRQ;
@@ -481,9 +482,16 @@ lat_print_generic(struct trace_seq *s, struct trace_entry *entry, int cpu)
                                 hardirq ? 'h' : softirq ? 's' : '.'))
                 return 0;
 
+        if (entry->lock_depth < 0)
+                ret = trace_seq_putc(s, '.');
+        else
+                ret = trace_seq_printf(s, "%d", entry->lock_depth);
+        if (!ret)
+                return 0;
+
         if (entry->preempt_count)
                 return trace_seq_printf(s, "%x", entry->preempt_count);
-        return trace_seq_puts(s, ".");
+        return trace_seq_putc(s, '.');
 }
 
 static unsigned long preempt_mark_thresh = 100;