1 #include <string.h>
2 #include <stdlib.h>
3 #include <stdio.h>
4 #include "tests.h"
5 #include "util.h"
6 #include "session.h"
7 #include "evlist.h"
8 #include "debug.h"
9
10 #define TEMPL "/tmp/perf-test-XXXXXX"
11 #define DATA_SIZE 10
12
get_temp(char * path)13 static int get_temp(char *path)
14 {
15 int fd;
16
17 strcpy(path, TEMPL);
18
19 fd = mkstemp(path);
20 if (fd < 0) {
21 perror("mkstemp failed");
22 return -1;
23 }
24
25 close(fd);
26 return 0;
27 }
28
session_write_header(char * path)29 static int session_write_header(char *path)
30 {
31 struct perf_session *session;
32 struct perf_data_file file = {
33 .path = path,
34 .mode = PERF_DATA_MODE_WRITE,
35 };
36
37 session = perf_session__new(&file, false, NULL);
38 TEST_ASSERT_VAL("can't get session", session);
39
40 session->evlist = perf_evlist__new_default();
41 TEST_ASSERT_VAL("can't get evlist", session->evlist);
42
43 perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY);
44 perf_header__set_feat(&session->header, HEADER_NRCPUS);
45 perf_header__set_feat(&session->header, HEADER_ARCH);
46
47 session->header.data_size += DATA_SIZE;
48
49 TEST_ASSERT_VAL("failed to write header",
50 !perf_session__write_header(session, session->evlist, file.fd, true));
51
52 perf_session__delete(session);
53
54 return 0;
55 }
56
check_cpu_topology(char * path,struct cpu_map * map)57 static int check_cpu_topology(char *path, struct cpu_map *map)
58 {
59 struct perf_session *session;
60 struct perf_data_file file = {
61 .path = path,
62 .mode = PERF_DATA_MODE_READ,
63 };
64 int i;
65
66 session = perf_session__new(&file, false, NULL);
67 TEST_ASSERT_VAL("can't get session", session);
68
69 for (i = 0; i < session->header.env.nr_cpus_online; i++) {
70 pr_debug("CPU %d, core %d, socket %d\n", i,
71 session->header.env.cpu[i].core_id,
72 session->header.env.cpu[i].socket_id);
73 }
74
75 for (i = 0; i < map->nr; i++) {
76 TEST_ASSERT_VAL("Core ID doesn't match",
77 (session->header.env.cpu[map->map[i]].core_id == (cpu_map__get_core(map, i, NULL) & 0xffff)));
78
79 TEST_ASSERT_VAL("Socket ID doesn't match",
80 (session->header.env.cpu[map->map[i]].socket_id == cpu_map__get_socket(map, i, NULL)));
81 }
82
83 perf_session__delete(session);
84
85 return 0;
86 }
87
test_session_topology(void)88 int test_session_topology(void)
89 {
90 char path[PATH_MAX];
91 struct cpu_map *map;
92 int ret = -1;
93
94 TEST_ASSERT_VAL("can't get templ file", !get_temp(path));
95
96 pr_debug("templ file: %s\n", path);
97
98 if (session_write_header(path))
99 goto free_path;
100
101 map = cpu_map__new(NULL);
102 if (map == NULL) {
103 pr_debug("failed to get system cpumap\n");
104 goto free_path;
105 }
106
107 if (check_cpu_topology(path, map))
108 goto free_map;
109 ret = 0;
110
111 free_map:
112 cpu_map__put(map);
113 free_path:
114 unlink(path);
115 return ret;
116 }
117