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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
c84974ed KL |
2 | #include <string.h> |
3 | #include <stdlib.h> | |
4 | #include <stdio.h> | |
5 | #include "tests.h" | |
6 | #include "util.h" | |
7 | #include "session.h" | |
8 | #include "evlist.h" | |
9 | #include "debug.h" | |
10 | ||
11 | #define TEMPL "/tmp/perf-test-XXXXXX" | |
12 | #define DATA_SIZE 10 | |
13 | ||
14 | static int get_temp(char *path) | |
15 | { | |
16 | int fd; | |
17 | ||
18 | strcpy(path, TEMPL); | |
19 | ||
20 | fd = mkstemp(path); | |
21 | if (fd < 0) { | |
22 | perror("mkstemp failed"); | |
23 | return -1; | |
24 | } | |
25 | ||
26 | close(fd); | |
27 | return 0; | |
28 | } | |
29 | ||
30 | static int session_write_header(char *path) | |
31 | { | |
32 | struct perf_session *session; | |
8ceb41d7 | 33 | struct perf_data data = { |
eae8ad80 JO |
34 | .file = { |
35 | .path = path, | |
36 | }, | |
37 | .mode = PERF_DATA_MODE_WRITE, | |
c84974ed KL |
38 | }; |
39 | ||
8ceb41d7 | 40 | session = perf_session__new(&data, false, NULL); |
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41 | TEST_ASSERT_VAL("can't get session", session); |
42 | ||
43 | session->evlist = perf_evlist__new_default(); | |
44 | TEST_ASSERT_VAL("can't get evlist", session->evlist); | |
45 | ||
46 | perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY); | |
47 | perf_header__set_feat(&session->header, HEADER_NRCPUS); | |
b930e62e | 48 | perf_header__set_feat(&session->header, HEADER_ARCH); |
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49 | |
50 | session->header.data_size += DATA_SIZE; | |
51 | ||
52 | TEST_ASSERT_VAL("failed to write header", | |
eae8ad80 | 53 | !perf_session__write_header(session, session->evlist, data.file.fd, true)); |
c84974ed KL |
54 | |
55 | perf_session__delete(session); | |
56 | ||
57 | return 0; | |
58 | } | |
59 | ||
f854839b | 60 | static int check_cpu_topology(char *path, struct perf_cpu_map *map) |
c84974ed KL |
61 | { |
62 | struct perf_session *session; | |
8ceb41d7 | 63 | struct perf_data data = { |
eae8ad80 JO |
64 | .file = { |
65 | .path = path, | |
66 | }, | |
67 | .mode = PERF_DATA_MODE_READ, | |
c84974ed KL |
68 | }; |
69 | int i; | |
70 | ||
8ceb41d7 | 71 | session = perf_session__new(&data, false, NULL); |
c84974ed KL |
72 | TEST_ASSERT_VAL("can't get session", session); |
73 | ||
d1211091 TR |
74 | /* On platforms with large numbers of CPUs process_cpu_topology() |
75 | * might issue an error while reading the perf.data file section | |
76 | * HEADER_CPU_TOPOLOGY and the cpu_topology_map pointed to by member | |
77 | * cpu is a NULL pointer. | |
78 | * Example: On s390 | |
79 | * CPU 0 is on core_id 0 and physical_package_id 6 | |
80 | * CPU 1 is on core_id 1 and physical_package_id 3 | |
81 | * | |
82 | * Core_id and physical_package_id are platform and architecture | |
83 | * dependend and might have higher numbers than the CPU id. | |
84 | * This actually depends on the configuration. | |
85 | * | |
86 | * In this case process_cpu_topology() prints error message: | |
87 | * "socket_id number is too big. You may need to upgrade the | |
88 | * perf tool." | |
89 | * | |
90 | * This is the reason why this test might be skipped. | |
91 | */ | |
92 | if (!session->header.env.cpu) | |
93 | return TEST_SKIP; | |
94 | ||
da8a58b5 JS |
95 | for (i = 0; i < session->header.env.nr_cpus_avail; i++) { |
96 | if (!cpu_map__has(map, i)) | |
97 | continue; | |
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98 | pr_debug("CPU %d, core %d, socket %d\n", i, |
99 | session->header.env.cpu[i].core_id, | |
100 | session->header.env.cpu[i].socket_id); | |
101 | } | |
102 | ||
103 | for (i = 0; i < map->nr; i++) { | |
104 | TEST_ASSERT_VAL("Core ID doesn't match", | |
1fe7a300 | 105 | (session->header.env.cpu[map->map[i]].core_id == (cpu_map__get_core(map, i, NULL) & 0xffff))); |
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106 | |
107 | TEST_ASSERT_VAL("Socket ID doesn't match", | |
1fe7a300 | 108 | (session->header.env.cpu[map->map[i]].socket_id == cpu_map__get_socket(map, i, NULL))); |
c84974ed KL |
109 | } |
110 | ||
111 | perf_session__delete(session); | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
81f17c90 | 116 | int test__session_topology(struct test *test __maybe_unused, int subtest __maybe_unused) |
c84974ed KL |
117 | { |
118 | char path[PATH_MAX]; | |
f854839b | 119 | struct perf_cpu_map *map; |
d1211091 | 120 | int ret = TEST_FAIL; |
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121 | |
122 | TEST_ASSERT_VAL("can't get templ file", !get_temp(path)); | |
123 | ||
124 | pr_debug("templ file: %s\n", path); | |
125 | ||
126 | if (session_write_header(path)) | |
127 | goto free_path; | |
128 | ||
129 | map = cpu_map__new(NULL); | |
130 | if (map == NULL) { | |
131 | pr_debug("failed to get system cpumap\n"); | |
132 | goto free_path; | |
133 | } | |
134 | ||
d1211091 | 135 | ret = check_cpu_topology(path, map); |
38f01d8d | 136 | perf_cpu_map__put(map); |
d1211091 | 137 | |
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138 | free_path: |
139 | unlink(path); | |
140 | return ret; | |
141 | } |