selftests/bpf/test_ftrace.sh

4     TR=/sys/kernel/tracing/
6     TR=/sys/kernel/debug/tracing/
10     echo > $TR/trace
14     echo 0 > $TR/tracing_on
18     echo 1 > $TR/tracing_on
22     echo nop > $TR/current_tracer
28 echo "" > $TR/set_ftrace_filter
29 echo '*printk* *console* *wake* *serial* *lock*' > $TR/set_ftrace_notrace
31 echo "bpf_prog_test*" > $TR/set_graph_function
32 echo "" > $TR/set_graph_notrace
34 echo function_graph > $TR/current_tracer