1 // SPDX-License-Identifier: GPL-2.0 2 #include <string.h> 3 #include <stdlib.h> 4 #include <stdio.h> 5 #include <perf/cpumap.h> 6 #include "cpumap.h" 7 #include "tests.h" 8 #include "session.h" 9 #include "evlist.h" 10 #include "debug.h" 11 #include "pmu.h" 12 #include <linux/err.h> 13 14 #define TEMPL "/tmp/perf-test-XXXXXX" 15 #define DATA_SIZE 10 16 17 static int get_temp(char *path) 18 { 19 int fd; 20 21 strcpy(path, TEMPL); 22 23 fd = mkstemp(path); 24 if (fd < 0) { 25 perror("mkstemp failed"); 26 return -1; 27 } 28 29 close(fd); 30 return 0; 31 } 32 33 static int session_write_header(char *path) 34 { 35 struct perf_session *session; 36 struct perf_data data = { 37 .path = path, 38 .mode = PERF_DATA_MODE_WRITE, 39 }; 40 41 session = perf_session__new(&data, NULL); 42 TEST_ASSERT_VAL("can't get session", !IS_ERR(session)); 43 44 if (!perf_pmu__has_hybrid()) { 45 session->evlist = evlist__new_default(); 46 TEST_ASSERT_VAL("can't get evlist", session->evlist); 47 } else { 48 struct parse_events_error err; 49 50 session->evlist = evlist__new(); 51 TEST_ASSERT_VAL("can't get evlist", session->evlist); 52 parse_events_error__init(&err); 53 parse_events(session->evlist, "cpu_core/cycles/", &err); 54 parse_events_error__exit(&err); 55 } 56 57 perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY); 58 perf_header__set_feat(&session->header, HEADER_NRCPUS); 59 perf_header__set_feat(&session->header, HEADER_ARCH); 60 61 session->header.data_size += DATA_SIZE; 62 63 TEST_ASSERT_VAL("failed to write header", 64 !perf_session__write_header(session, session->evlist, data.file.fd, true)); 65 66 evlist__delete(session->evlist); 67 perf_session__delete(session); 68 69 return 0; 70 } 71 72 static int check_cpu_topology(char *path, struct perf_cpu_map *map) 73 { 74 struct perf_session *session; 75 struct perf_data data = { 76 .path = path, 77 .mode = PERF_DATA_MODE_READ, 78 }; 79 int i; 80 struct aggr_cpu_id id; 81 82 session = perf_session__new(&data, NULL); 83 TEST_ASSERT_VAL("can't get session", !IS_ERR(session)); 84 cpu__setup_cpunode_map(); 85 86 /* On platforms with large numbers of CPUs process_cpu_topology() 87 * might issue an error while reading the perf.data file section 88 * HEADER_CPU_TOPOLOGY and the cpu_topology_map pointed to by member 89 * cpu is a NULL pointer. 90 * Example: On s390 91 * CPU 0 is on core_id 0 and physical_package_id 6 92 * CPU 1 is on core_id 1 and physical_package_id 3 93 * 94 * Core_id and physical_package_id are platform and architecture 95 * dependent and might have higher numbers than the CPU id. 96 * This actually depends on the configuration. 97 * 98 * In this case process_cpu_topology() prints error message: 99 * "socket_id number is too big. You may need to upgrade the 100 * perf tool." 101 * 102 * This is the reason why this test might be skipped. aarch64 and 103 * s390 always write this part of the header, even when the above 104 * condition is true (see do_core_id_test in header.c). So always 105 * run this test on those platforms. 106 */ 107 if (!session->header.env.cpu 108 && strncmp(session->header.env.arch, "s390", 4) 109 && strncmp(session->header.env.arch, "aarch64", 7)) 110 return TEST_SKIP; 111 112 /* 113 * In powerpc pSeries platform, not all the topology information 114 * are exposed via sysfs. Due to restriction, detail like 115 * physical_package_id will be set to -1. Hence skip this 116 * test if physical_package_id returns -1 for cpu from perf_cpu_map. 117 */ 118 if (!strncmp(session->header.env.arch, "ppc64le", 7)) { 119 if (cpu__get_socket_id(perf_cpu_map__cpu(map, 0)) == -1) 120 return TEST_SKIP; 121 } 122 123 TEST_ASSERT_VAL("Session header CPU map not set", session->header.env.cpu); 124 125 for (i = 0; i < session->header.env.nr_cpus_avail; i++) { 126 struct perf_cpu cpu = { .cpu = i }; 127 128 if (!perf_cpu_map__has(map, cpu)) 129 continue; 130 pr_debug("CPU %d, core %d, socket %d\n", i, 131 session->header.env.cpu[i].core_id, 132 session->header.env.cpu[i].socket_id); 133 } 134 135 // Test that CPU ID contains socket, die, core and CPU 136 for (i = 0; i < perf_cpu_map__nr(map); i++) { 137 id = aggr_cpu_id__cpu(perf_cpu_map__cpu(map, i), NULL); 138 TEST_ASSERT_VAL("Cpu map - CPU ID doesn't match", 139 perf_cpu_map__cpu(map, i).cpu == id.cpu.cpu); 140 141 TEST_ASSERT_VAL("Cpu map - Core ID doesn't match", 142 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].core_id == id.core); 143 TEST_ASSERT_VAL("Cpu map - Socket ID doesn't match", 144 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id == 145 id.socket); 146 147 TEST_ASSERT_VAL("Cpu map - Die ID doesn't match", 148 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].die_id == id.die); 149 TEST_ASSERT_VAL("Cpu map - Node ID is set", id.node == -1); 150 TEST_ASSERT_VAL("Cpu map - Thread IDX is set", id.thread_idx == -1); 151 } 152 153 // Test that core ID contains socket, die and core 154 for (i = 0; i < perf_cpu_map__nr(map); i++) { 155 id = aggr_cpu_id__core(perf_cpu_map__cpu(map, i), NULL); 156 TEST_ASSERT_VAL("Core map - Core ID doesn't match", 157 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].core_id == id.core); 158 159 TEST_ASSERT_VAL("Core map - Socket ID doesn't match", 160 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id == 161 id.socket); 162 163 TEST_ASSERT_VAL("Core map - Die ID doesn't match", 164 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].die_id == id.die); 165 TEST_ASSERT_VAL("Core map - Node ID is set", id.node == -1); 166 TEST_ASSERT_VAL("Core map - Thread IDX is set", id.thread_idx == -1); 167 } 168 169 // Test that die ID contains socket and die 170 for (i = 0; i < perf_cpu_map__nr(map); i++) { 171 id = aggr_cpu_id__die(perf_cpu_map__cpu(map, i), NULL); 172 TEST_ASSERT_VAL("Die map - Socket ID doesn't match", 173 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id == 174 id.socket); 175 176 TEST_ASSERT_VAL("Die map - Die ID doesn't match", 177 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].die_id == id.die); 178 179 TEST_ASSERT_VAL("Die map - Node ID is set", id.node == -1); 180 TEST_ASSERT_VAL("Die map - Core is set", id.core == -1); 181 TEST_ASSERT_VAL("Die map - CPU is set", id.cpu.cpu == -1); 182 TEST_ASSERT_VAL("Die map - Thread IDX is set", id.thread_idx == -1); 183 } 184 185 // Test that socket ID contains only socket 186 for (i = 0; i < perf_cpu_map__nr(map); i++) { 187 id = aggr_cpu_id__socket(perf_cpu_map__cpu(map, i), NULL); 188 TEST_ASSERT_VAL("Socket map - Socket ID doesn't match", 189 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id == 190 id.socket); 191 192 TEST_ASSERT_VAL("Socket map - Node ID is set", id.node == -1); 193 TEST_ASSERT_VAL("Socket map - Die ID is set", id.die == -1); 194 TEST_ASSERT_VAL("Socket map - Core is set", id.core == -1); 195 TEST_ASSERT_VAL("Socket map - CPU is set", id.cpu.cpu == -1); 196 TEST_ASSERT_VAL("Socket map - Thread IDX is set", id.thread_idx == -1); 197 } 198 199 // Test that node ID contains only node 200 for (i = 0; i < perf_cpu_map__nr(map); i++) { 201 id = aggr_cpu_id__node(perf_cpu_map__cpu(map, i), NULL); 202 TEST_ASSERT_VAL("Node map - Node ID doesn't match", 203 cpu__get_node(perf_cpu_map__cpu(map, i)) == id.node); 204 TEST_ASSERT_VAL("Node map - Socket is set", id.socket == -1); 205 TEST_ASSERT_VAL("Node map - Die ID is set", id.die == -1); 206 TEST_ASSERT_VAL("Node map - Core is set", id.core == -1); 207 TEST_ASSERT_VAL("Node map - CPU is set", id.cpu.cpu == -1); 208 TEST_ASSERT_VAL("Node map - Thread IDX is set", id.thread_idx == -1); 209 } 210 perf_session__delete(session); 211 212 return 0; 213 } 214 215 static int test__session_topology(struct test_suite *test __maybe_unused, int subtest __maybe_unused) 216 { 217 char path[PATH_MAX]; 218 struct perf_cpu_map *map; 219 int ret = TEST_FAIL; 220 221 TEST_ASSERT_VAL("can't get templ file", !get_temp(path)); 222 223 pr_debug("templ file: %s\n", path); 224 225 if (session_write_header(path)) 226 goto free_path; 227 228 map = perf_cpu_map__new(NULL); 229 if (map == NULL) { 230 pr_debug("failed to get system cpumap\n"); 231 goto free_path; 232 } 233 234 ret = check_cpu_topology(path, map); 235 perf_cpu_map__put(map); 236 237 free_path: 238 unlink(path); 239 return ret; 240 } 241 242 DEFINE_SUITE("Session topology", session_topology); 243