1#!/bin/bash 2 3TR=/sys/kernel/debug/tracing/ 4clear_trace() { # reset trace output 5 echo > $TR/trace 6} 7 8disable_tracing() { # stop trace recording 9 echo 0 > $TR/tracing_on 10} 11 12enable_tracing() { # start trace recording 13 echo 1 > $TR/tracing_on 14} 15 16reset_tracer() { # reset the current tracer 17 echo nop > $TR/current_tracer 18} 19 20disable_tracing 21clear_trace 22 23echo "" > $TR/set_ftrace_filter 24echo '*printk* *console* *wake* *serial* *lock*' > $TR/set_ftrace_notrace 25 26echo "bpf_prog_test*" > $TR/set_graph_function 27echo "" > $TR/set_graph_notrace 28 29echo function_graph > $TR/current_tracer 30 31enable_tracing 32./test_progs -t fentry 33./test_progs -t fexit 34disable_tracing 35clear_trace 36 37reset_tracer 38 39exit 0 40