function print_all_trace_info(point) {
	printf("backtrace from %s:\n", pp())
        print_backtrace()
        printf("--- %s ---\n", point)
	bt = backtrace()
	printf("the stack is %s\n", bt)
	print_stack(bt);
        print("--------\n")
}

probe begin {
	print_backtrace()
}

probe end {
	print_backtrace()
}

global flag = 0

probe module("systemtap_test_module2").function("yyy_func2") {
	print_all_trace_info("yyy_func2")
	flag ++
}

probe module("systemtap_test_module2").function("yyy_func3") {
	print_all_trace_info("yyy_func3")
	flag ++
}

probe module("systemtap_test_module2").function("yyy_func4") {
	print_all_trace_info("yyy_func4")
	flag ++
}