1 #!/bin/bash
2
3 if [[ -e /sys/kernel/tracing/trace ]]; then
4 TR=/sys/kernel/tracing/
5 else
6 TR=/sys/kernel/debug/tracing/
7 fi
8
9 clear_trace() { # reset trace output
10 echo > $TR/trace
11 }
12
13 disable_tracing() { # stop trace recording
14 echo 0 > $TR/tracing_on
15 }
16
17 enable_tracing() { # start trace recording
18 echo 1 > $TR/tracing_on
19 }
20
21 reset_tracer() { # reset the current tracer
22 echo nop > $TR/current_tracer
23 }
24
25 disable_tracing
26 clear_trace
27
28 echo "" > $TR/set_ftrace_filter
29 echo '*printk* *console* *wake* *serial* *lock*' > $TR/set_ftrace_notrace
30
31 echo "bpf_prog_test*" > $TR/set_graph_function
32 echo "" > $TR/set_graph_notrace
33
34 echo function_graph > $TR/current_tracer
35
36 enable_tracing
37 ./test_progs -t fentry
38 ./test_progs -t fexit
39 disable_tracing
40 clear_trace
41
42 reset_tracer
43
44 exit 0
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