pipe_open 5900 kernel/trace/trace.c if (iter->trace->pipe_open) pipe_open 5901 kernel/trace/trace.c iter->trace->pipe_open(iter); pipe_open 474 kernel/trace/trace.h void (*pipe_open)(struct trace_iterator *iter); pipe_open 1285 kernel/trace/trace_functions_graph.c .pipe_open = graph_trace_open, pipe_open 282 kernel/trace/trace_mmiotrace.c .pipe_open = mmio_pipe_open,