#!/bin/bash TR=/sys/kernel/debug/tracing/ clear_trace() { # reset trace output echo > $TR/trace } disable_tracing() { # stop trace recording echo 0 > $TR/tracing_on } enable_tracing() { # start trace recording echo 1 > $TR/tracing_on } reset_tracer() { # reset the current tracer echo nop > $TR/current_tracer } disable_tracing clear_trace echo "" > $TR/set_ftrace_filter echo '*printk* *console* *wake* *serial* *lock*' > $TR/set_ftrace_notrace echo "bpf_prog_test*" > $TR/set_graph_function echo "" > $TR/set_graph_notrace echo function_graph > $TR/current_tracer enable_tracing ./test_progs -t fentry ./test_progs -t fexit disable_tracing clear_trace reset_tracer exit 0