trace_set_ring_buffer_expanded
trace_set_ring_buffer_expanded(NULL);
trace_set_ring_buffer_expanded(NULL);
trace_set_ring_buffer_expanded(tr);
trace_set_ring_buffer_expanded(tr);
extern void trace_set_ring_buffer_expanded(struct trace_array *tr);
trace_set_ring_buffer_expanded(NULL);
trace_set_ring_buffer_expanded(NULL);