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247c9de1 EH |
1 | /* |
2 | * Test code for x86 CPUID and Topology functions | |
3 | * | |
4 | * Copyright (c) 2012 Red Hat Inc. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | ||
25 | #include <glib.h> | |
26 | ||
27 | #include "topology.h" | |
28 | ||
29 | static void test_topo_bits(void) | |
30 | { | |
31 | /* simple tests for 1 thread per core, 1 core per socket */ | |
32 | g_assert_cmpuint(apicid_smt_width(1, 1), ==, 0); | |
33 | g_assert_cmpuint(apicid_core_width(1, 1), ==, 0); | |
34 | ||
35 | g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 0), ==, 0); | |
36 | g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 1), ==, 1); | |
37 | g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 2), ==, 2); | |
38 | g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 3), ==, 3); | |
39 | ||
40 | ||
41 | /* Test field width calculation for multiple values | |
42 | */ | |
43 | g_assert_cmpuint(apicid_smt_width(1, 2), ==, 1); | |
44 | g_assert_cmpuint(apicid_smt_width(1, 3), ==, 2); | |
45 | g_assert_cmpuint(apicid_smt_width(1, 4), ==, 2); | |
46 | ||
47 | g_assert_cmpuint(apicid_smt_width(1, 14), ==, 4); | |
48 | g_assert_cmpuint(apicid_smt_width(1, 15), ==, 4); | |
49 | g_assert_cmpuint(apicid_smt_width(1, 16), ==, 4); | |
50 | g_assert_cmpuint(apicid_smt_width(1, 17), ==, 5); | |
51 | ||
52 | ||
53 | g_assert_cmpuint(apicid_core_width(30, 2), ==, 5); | |
54 | g_assert_cmpuint(apicid_core_width(31, 2), ==, 5); | |
55 | g_assert_cmpuint(apicid_core_width(32, 2), ==, 5); | |
56 | g_assert_cmpuint(apicid_core_width(33, 2), ==, 6); | |
57 | ||
58 | ||
59 | /* build a weird topology and see if IDs are calculated correctly | |
60 | */ | |
61 | ||
62 | /* This will use 2 bits for thread ID and 3 bits for core ID | |
63 | */ | |
64 | g_assert_cmpuint(apicid_smt_width(6, 3), ==, 2); | |
65 | g_assert_cmpuint(apicid_core_width(6, 3), ==, 3); | |
66 | g_assert_cmpuint(apicid_pkg_offset(6, 3), ==, 5); | |
67 | ||
68 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 0), ==, 0); | |
69 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1), ==, 1); | |
70 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 2), ==, 2); | |
71 | ||
72 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 3 + 0), ==, | |
73 | (1 << 2) | 0); | |
74 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 3 + 1), ==, | |
75 | (1 << 2) | 1); | |
76 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 3 + 2), ==, | |
77 | (1 << 2) | 2); | |
78 | ||
79 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 2 * 3 + 0), ==, | |
80 | (2 << 2) | 0); | |
81 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 2 * 3 + 1), ==, | |
82 | (2 << 2) | 1); | |
83 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 2 * 3 + 2), ==, | |
84 | (2 << 2) | 2); | |
85 | ||
86 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 5 * 3 + 0), ==, | |
87 | (5 << 2) | 0); | |
88 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 5 * 3 + 1), ==, | |
89 | (5 << 2) | 1); | |
90 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 5 * 3 + 2), ==, | |
91 | (5 << 2) | 2); | |
92 | ||
93 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 6 * 3 + 0 * 3 + 0), ==, | |
94 | (1 << 5)); | |
95 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 6 * 3 + 1 * 3 + 1), ==, | |
96 | (1 << 5) | (1 << 2) | 1); | |
97 | g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 3 * 6 * 3 + 5 * 3 + 2), ==, | |
98 | (3 << 5) | (5 << 2) | 2); | |
99 | } | |
100 | ||
101 | int main(int argc, char **argv) | |
102 | { | |
103 | g_test_init(&argc, &argv, NULL); | |
104 | ||
105 | g_test_add_func("/cpuid/topology/basic", test_topo_bits); | |
106 | ||
107 | g_test_run(); | |
108 | ||
109 | return 0; | |
110 | } |