1 // SPDX-License-Identifier: GPL-2.0
5 #include <perf/cpumap.h>
12 #include <linux/err.h>
14 #define TEMPL "/tmp/perf-test-XXXXXX"
17 static int get_temp(char *path)
25 perror("mkstemp failed");
33 static int session_write_header(char *path)
35 struct perf_session *session;
36 struct perf_data data = {
38 .mode = PERF_DATA_MODE_WRITE,
41 session = perf_session__new(&data, NULL);
42 TEST_ASSERT_VAL("can't get session", !IS_ERR(session));
44 if (!perf_pmu__has_hybrid()) {
45 session->evlist = evlist__new_default();
46 TEST_ASSERT_VAL("can't get evlist", session->evlist);
48 struct parse_events_error err;
50 session->evlist = evlist__new();
51 TEST_ASSERT_VAL("can't get evlist", session->evlist);
52 parse_events(session->evlist, "cpu_core/cycles/", &err);
55 perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY);
56 perf_header__set_feat(&session->header, HEADER_NRCPUS);
57 perf_header__set_feat(&session->header, HEADER_ARCH);
59 session->header.data_size += DATA_SIZE;
61 TEST_ASSERT_VAL("failed to write header",
62 !perf_session__write_header(session, session->evlist, data.file.fd, true));
64 evlist__delete(session->evlist);
65 perf_session__delete(session);
70 static int check_cpu_topology(char *path, struct perf_cpu_map *map)
72 struct perf_session *session;
73 struct perf_data data = {
75 .mode = PERF_DATA_MODE_READ,
78 struct aggr_cpu_id id;
80 session = perf_session__new(&data, NULL);
81 TEST_ASSERT_VAL("can't get session", !IS_ERR(session));
82 cpu__setup_cpunode_map();
84 /* On platforms with large numbers of CPUs process_cpu_topology()
85 * might issue an error while reading the perf.data file section
86 * HEADER_CPU_TOPOLOGY and the cpu_topology_map pointed to by member
87 * cpu is a NULL pointer.
89 * CPU 0 is on core_id 0 and physical_package_id 6
90 * CPU 1 is on core_id 1 and physical_package_id 3
92 * Core_id and physical_package_id are platform and architecture
93 * dependent and might have higher numbers than the CPU id.
94 * This actually depends on the configuration.
96 * In this case process_cpu_topology() prints error message:
97 * "socket_id number is too big. You may need to upgrade the
100 * This is the reason why this test might be skipped. aarch64 and
101 * s390 always write this part of the header, even when the above
102 * condition is true (see do_core_id_test in header.c). So always
103 * run this test on those platforms.
105 if (!session->header.env.cpu
106 && strncmp(session->header.env.arch, "s390", 4)
107 && strncmp(session->header.env.arch, "aarch64", 7))
110 TEST_ASSERT_VAL("Session header CPU map not set", session->header.env.cpu);
112 for (i = 0; i < session->header.env.nr_cpus_avail; i++) {
113 if (!cpu_map__has(map, i))
115 pr_debug("CPU %d, core %d, socket %d\n", i,
116 session->header.env.cpu[i].core_id,
117 session->header.env.cpu[i].socket_id);
120 // Test that core ID contains socket, die and core
121 for (i = 0; i < map->nr; i++) {
122 id = cpu_map__get_core(map, i, NULL);
123 TEST_ASSERT_VAL("Core map - Core ID doesn't match",
124 session->header.env.cpu[map->map[i]].core_id == id.core);
126 TEST_ASSERT_VAL("Core map - Socket ID doesn't match",
127 session->header.env.cpu[map->map[i]].socket_id == id.socket);
129 TEST_ASSERT_VAL("Core map - Die ID doesn't match",
130 session->header.env.cpu[map->map[i]].die_id == id.die);
131 TEST_ASSERT_VAL("Core map - Node ID is set", id.node == -1);
132 TEST_ASSERT_VAL("Core map - Thread is set", id.thread == -1);
135 // Test that die ID contains socket and die
136 for (i = 0; i < map->nr; i++) {
137 id = cpu_map__get_die(map, i, NULL);
138 TEST_ASSERT_VAL("Die map - Socket ID doesn't match",
139 session->header.env.cpu[map->map[i]].socket_id == id.socket);
141 TEST_ASSERT_VAL("Die map - Die ID doesn't match",
142 session->header.env.cpu[map->map[i]].die_id == id.die);
144 TEST_ASSERT_VAL("Die map - Node ID is set", id.node == -1);
145 TEST_ASSERT_VAL("Die map - Core is set", id.core == -1);
146 TEST_ASSERT_VAL("Die map - Thread is set", id.thread == -1);
149 // Test that socket ID contains only socket
150 for (i = 0; i < map->nr; i++) {
151 id = cpu_map__get_socket(map, i, NULL);
152 TEST_ASSERT_VAL("Socket map - Socket ID doesn't match",
153 session->header.env.cpu[map->map[i]].socket_id == id.socket);
155 TEST_ASSERT_VAL("Socket map - Node ID is set", id.node == -1);
156 TEST_ASSERT_VAL("Socket map - Die ID is set", id.die == -1);
157 TEST_ASSERT_VAL("Socket map - Core is set", id.core == -1);
158 TEST_ASSERT_VAL("Socket map - Thread is set", id.thread == -1);
161 // Test that node ID contains only node
162 for (i = 0; i < map->nr; i++) {
163 id = cpu_map__get_node(map, i, NULL);
164 TEST_ASSERT_VAL("Node map - Node ID doesn't match",
165 cpu__get_node(map->map[i]) == id.node);
166 TEST_ASSERT_VAL("Node map - Socket is set", id.socket == -1);
167 TEST_ASSERT_VAL("Node map - Die ID is set", id.die == -1);
168 TEST_ASSERT_VAL("Node map - Core is set", id.core == -1);
169 TEST_ASSERT_VAL("Node map - Thread is set", id.thread == -1);
171 perf_session__delete(session);
176 int test__session_topology(struct test *test __maybe_unused, int subtest __maybe_unused)
179 struct perf_cpu_map *map;
182 TEST_ASSERT_VAL("can't get templ file", !get_temp(path));
184 pr_debug("templ file: %s\n", path);
186 if (session_write_header(path))
189 map = perf_cpu_map__new(NULL);
191 pr_debug("failed to get system cpumap\n");
195 ret = check_cpu_topology(path, map);
196 perf_cpu_map__put(map);