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