1 #!/bin/bash
2 # test perf probe of function from different CU
3 # SPDX-License-Identifier: GPL-2.0
4
5 set -e
6
7 # Skip if there's no probe command.
8 if ! perf | grep probe
9 then
10 echo "Skip: probe command isn't present"
11 exit 2
12 fi
13
14 # skip if there's no gcc
15 if ! [ -x "$(command -v gcc)" ]; then
16 echo "failed: no gcc compiler"
17 exit 2
18 fi
19
20 temp_dir=$(mktemp -d /tmp/perf-uprobe-different-cu-sh.XXXXXXXXXX)
21
22 cleanup()
23 {
24 trap - EXIT TERM INT
25 if [[ "${temp_dir}" =~ ^/tmp/perf-uprobe-different-cu-sh.*$ ]]; then
26 echo "--- Cleaning up ---"
27 perf probe -x ${temp_dir}/testfile -d foo || true
28 rm -f "${temp_dir}/"*
29 rmdir "${temp_dir}"
30 fi
31 }
32
33 trap_cleanup()
34 {
35 cleanup
36 exit 1
37 }
38
39 trap trap_cleanup EXIT TERM INT
40
41 cat > ${temp_dir}/testfile-foo.h << EOF
42 struct t
43 {
44 int *p;
45 int c;
46 };
47
48 extern int foo (int i, struct t *t);
49 EOF
50
51 cat > ${temp_dir}/testfile-foo.c << EOF
52 #include "testfile-foo.h"
53
54 int
55 foo (int i, struct t *t)
56 {
57 int j, res = 0;
58 for (j = 0; j < i && j < t->c; j++)
59 res += t->p[j];
60
61 return res;
62 }
63 EOF
64
65 cat > ${temp_dir}/testfile-main.c << EOF
66 #include "testfile-foo.h"
67
68 static struct t g;
69
70 int
71 main (int argc, char **argv)
72 {
73 int i;
74 int j[argc];
75 g.c = argc;
76 g.p = j;
77 for (i = 0; i < argc; i++)
78 j[i] = (int) argv[i][0];
79 return foo (3, &g);
80 }
81 EOF
82
83 gcc -g -Og -flto -c ${temp_dir}/testfile-foo.c -o ${temp_dir}/testfile-foo.o
84 gcc -g -Og -c ${temp_dir}/testfile-main.c -o ${temp_dir}/testfile-main.o
85 gcc -g -Og -o ${temp_dir}/testfile ${temp_dir}/testfile-foo.o ${temp_dir}/testfile-main.o
86
87 perf probe -x ${temp_dir}/testfile --funcs foo | grep "foo"
88 perf probe -x ${temp_dir}/testfile foo
89
90 cleanup
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