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, false, 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 perf_session__delete(session);
69 static int check_cpu_topology(char *path, struct perf_cpu_map *map)
71 struct perf_session *session;
72 struct perf_data data = {
74 .mode = PERF_DATA_MODE_READ,
77 struct aggr_cpu_id id;
79 session = perf_session__new(&data, false, NULL);
80 TEST_ASSERT_VAL("can't get session", !IS_ERR(session));
81 cpu__setup_cpunode_map();
83 /* On platforms with large numbers of CPUs process_cpu_topology()
84 * might issue an error while reading the perf.data file section
85 * HEADER_CPU_TOPOLOGY and the cpu_topology_map pointed to by member
86 * cpu is a NULL pointer.
88 * CPU 0 is on core_id 0 and physical_package_id 6
89 * CPU 1 is on core_id 1 and physical_package_id 3
91 * Core_id and physical_package_id are platform and architecture
92 * dependent and might have higher numbers than the CPU id.
93 * This actually depends on the configuration.
95 * In this case process_cpu_topology() prints error message:
96 * "socket_id number is too big. You may need to upgrade the
99 * This is the reason why this test might be skipped. aarch64 and
100 * s390 always write this part of the header, even when the above
101 * condition is true (see do_core_id_test in header.c). So always
102 * run this test on those platforms.
104 if (!session->header.env.cpu
105 && strncmp(session->header.env.arch, "s390", 4)
106 && strncmp(session->header.env.arch, "aarch64", 7))
109 TEST_ASSERT_VAL("Session header CPU map not set", session->header.env.cpu);
111 for (i = 0; i < session->header.env.nr_cpus_avail; i++) {
112 if (!cpu_map__has(map, i))
114 pr_debug("CPU %d, core %d, socket %d\n", i,
115 session->header.env.cpu[i].core_id,
116 session->header.env.cpu[i].socket_id);
119 // Test that core ID contains socket, die and core
120 for (i = 0; i < map->nr; i++) {
121 id = cpu_map__get_core(map, i, NULL);
122 TEST_ASSERT_VAL("Core map - Core ID doesn't match",
123 session->header.env.cpu[map->map[i]].core_id == id.core);
125 TEST_ASSERT_VAL("Core map - Socket ID doesn't match",
126 session->header.env.cpu[map->map[i]].socket_id == id.socket);
128 TEST_ASSERT_VAL("Core map - Die ID doesn't match",
129 session->header.env.cpu[map->map[i]].die_id == id.die);
130 TEST_ASSERT_VAL("Core map - Node ID is set", id.node == -1);
131 TEST_ASSERT_VAL("Core map - Thread is set", id.thread == -1);
134 // Test that die ID contains socket and die
135 for (i = 0; i < map->nr; i++) {
136 id = cpu_map__get_die(map, i, NULL);
137 TEST_ASSERT_VAL("Die map - Socket ID doesn't match",
138 session->header.env.cpu[map->map[i]].socket_id == id.socket);
140 TEST_ASSERT_VAL("Die map - Die ID doesn't match",
141 session->header.env.cpu[map->map[i]].die_id == id.die);
143 TEST_ASSERT_VAL("Die map - Node ID is set", id.node == -1);
144 TEST_ASSERT_VAL("Die map - Core is set", id.core == -1);
145 TEST_ASSERT_VAL("Die map - Thread is set", id.thread == -1);
148 // Test that socket ID contains only socket
149 for (i = 0; i < map->nr; i++) {
150 id = cpu_map__get_socket(map, i, NULL);
151 TEST_ASSERT_VAL("Socket map - Socket ID doesn't match",
152 session->header.env.cpu[map->map[i]].socket_id == id.socket);
154 TEST_ASSERT_VAL("Socket map - Node ID is set", id.node == -1);
155 TEST_ASSERT_VAL("Socket map - Die ID is set", id.die == -1);
156 TEST_ASSERT_VAL("Socket map - Core is set", id.core == -1);
157 TEST_ASSERT_VAL("Socket map - Thread is set", id.thread == -1);
160 // Test that node ID contains only node
161 for (i = 0; i < map->nr; i++) {
162 id = cpu_map__get_node(map, i, NULL);
163 TEST_ASSERT_VAL("Node map - Node ID doesn't match",
164 cpu__get_node(map->map[i]) == id.node);
165 TEST_ASSERT_VAL("Node map - Socket is set", id.socket == -1);
166 TEST_ASSERT_VAL("Node map - Die ID is set", id.die == -1);
167 TEST_ASSERT_VAL("Node map - Core is set", id.core == -1);
168 TEST_ASSERT_VAL("Node map - Thread is set", id.thread == -1);
170 perf_session__delete(session);
175 int test__session_topology(struct test *test __maybe_unused, int subtest __maybe_unused)
178 struct perf_cpu_map *map;
181 TEST_ASSERT_VAL("can't get templ file", !get_temp(path));
183 pr_debug("templ file: %s\n", path);
185 if (session_write_header(path))
188 map = perf_cpu_map__new(NULL);
190 pr_debug("failed to get system cpumap\n");
194 ret = check_cpu_topology(path, map);
195 perf_cpu_map__put(map);