1 files changed, 2 insertions, 0 deletions

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index f5b32ca0b457..29a7ea59de50 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -55,6 +55,7 @@ struct trace_entry {
 struct trace_array_cpu {
         struct list_head        trace_pages;
         atomic_t                disabled;
+        spinlock_t              lock;
         cycle_t                 time_offset;
 
         /* these fields get copied into max-trace: */
@@ -88,6 +89,7 @@ struct trace_array {
         long                    ctrl;
         int                     cpu;
         cycle_t                 time_start;
+        struct task_struct      *waiter;
         struct trace_array_cpu  *data[NR_CPUS];
 };