linux_kernel/tools/testing/selftests/ftrace/test.d/functions

clear_trace() { # reset trace output
    echo > trace
}

disable_tracing() { # stop trace recording
    echo 0 > tracing_on
}

enable_tracing() { # start trace recording
    echo 1 > tracing_on
}

reset_tracer() { # reset the current tracer
    echo nop > current_tracer
}