1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
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_syms(bt);
print("--------\n")
}
probe begin {
// Too difficult/different on different arches/kernels to check.
// print_backtrace()
log("<no kernel backtrace at begin>");
}
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 ++
exit();
}
|
