1 files changed, 1 insertions, 2 deletions

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 073b9e041d32..f7bc3ce6eaf6 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1163,18 +1163,17 @@ void tracing_reset_current(int cpu)
         tracing_reset(&global_trace.trace_buffer, cpu);
 }
 
+/* Must have trace_types_lock held */
 void tracing_reset_all_online_cpus(void)
 {
         struct trace_array *tr;
 
-        mutex_lock(&trace_types_lock);
         list_for_each_entry(tr, &ftrace_trace_arrays, list) {
                 tracing_reset_online_cpus(&tr->trace_buffer);
 #ifdef CONFIG_TRACER_MAX_TRACE
                 tracing_reset_online_cpus(&tr->max_buffer);
 #endif
         }
-        mutex_unlock(&trace_types_lock);
 }
 
 #define SAVED_CMDLINES 128