150   trace_options:
160 	trace option (also in trace_options). Options may also be set
1002 trace_options  section in ftrace - Function Tracer
1005 The trace_options file (or the options directory) is used to control
1009   cat trace_options
1041   echo noprint-parent > trace_options
1045   echo sym-offset > trace_options
2513 	- hide: echo nofuncgraph-cpu > trace_options
2514 	- show: echo funcgraph-cpu > trace_options
2521 	- hide: echo nofuncgraph-duration > trace_options
2522 	- show: echo funcgraph-duration > trace_options
2527 	- hide: echo nofuncgraph-overhead > trace_options
2528 	- show: echo funcgraph-overhead > trace_options
2584 	- hide: echo nofuncgraph-proc > trace_options
2585 	- show: echo funcgraph-proc > trace_options
2608 	- hide: echo nofuncgraph-abstime > trace_options
2609 	- show: echo funcgraph-abstime > trace_options
2640 	- hide: echo nofuncgraph-tail > trace_options
2641 	- show: echo funcgraph-tail > trace_options
3378   set_event  snapshot  trace  trace_clock  trace_marker  trace_options
3389 affect the main buffer with the exception of trace_options. Currently,
3390 the trace_options affect all instances and the top level buffer