1 // SPDX-License-Identifier: GPL-2.0
2 #include <test_progs.h>
3 #include <bpf/btf.h>
4 #include "bpf/libbpf_internal.h"
5
6 static int duration = 0;
7
8 static void validate_mask(int case_nr, const char *exp, bool *mask, int n)
9 {
10 int i;
11
12 for (i = 0; exp[i]; i++) {
13 if (exp[i] == '1') {
14 if (CHECK(i + 1 > n, "mask_short",
15 "case #%d: mask too short, got n=%d, need at least %d\n",
16 case_nr, n, i + 1))
17 return;
18 CHECK(!mask[i], "cpu_not_set",
19 "case #%d: mask differs, expected cpu#%d SET\n",
20 case_nr, i);
21 } else {
22 CHECK(i < n && mask[i], "cpu_set",
23 "case #%d: mask differs, expected cpu#%d UNSET\n",
24 case_nr, i);
25 }
26 }
27 CHECK(i < n, "mask_long",
28 "case #%d: mask too long, got n=%d, expected at most %d\n",
29 case_nr, n, i);
30 }
31
32 static struct {
33 const char *cpu_mask;
34 const char *expect;
35 bool fails;
36 } test_cases[] = {
37 { "\n", "1", false },
38 { "0,2\n", "101", false },
39 { "0-2\n", "111", false },
40 { "0-2,3-4\n", "11111", false },
41 { "", "1", false },
42 { "0-2", "111", false },
43 { "0,2", "101", false },
44 { "0,1-3", "1111", false },
45 { "0,1,2,3", "1111", false },
46 { "0,2-3,5", "101101", false },
47 { "3-3", "0001", false },
48 { "2-4,6,9-10", "00111010011", false },
49 /* failure cases */
50 { "", "", true },
51 { "0-", "", true },
52 { "0 ", "", true },
53 { "0_1", "", true },
54 { "1-0", "", true },
55 { "-1", "", true },
56 };
57
58 void test_cpu_mask()
59 {
60 int i, err, n;
61 bool *mask;
62
63 for (i = 0; i < ARRAY_SIZE(test_cases); i++) {
64 mask = NULL;
65 err = parse_cpu_mask_str(test_cases[i].cpu_mask, &mask, &n);
66 if (test_cases[i].fails) {
67 CHECK(!err, "should_fail",
68 "case #%d: parsing should fail!\n", i + 1);
69 } else {
70 if (CHECK(err, "parse_err",
71 "case #%d: cpu mask parsing failed: %d\n",
72 i + 1, err))
73 continue;
74 validate_mask(i + 1, test_cases[i].expect, mask, n);
75 }
76 free(mask);
77 }
78 }
79
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