| #!/bin/bash | |
| if [[ -e /sys/kernel/tracing/trace ]]; then | |
| TR=/sys/kernel/tracing/ | |
| else | |
| TR=/sys/kernel/debug/tracing/ | |
| fi | |
| 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 |