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