| #!/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 |
