1ftrace {
2	tracing_on = 0  # off by default
3	tracer = function_graph
4	event.kprobes {
5		start_event {
6			probes = "pci_proc_init"
7			actions = "traceon"
8		}
9		end_event {
10			probes = "pci_proc_init%return"
11			actions = "traceoff"
12		}
13	}
14}
15
16