1 #include <string.h> 2 #include <stdlib.h> 3 #include <stdio.h> 4 #include "tests.h" 5 #include "util.h" 6 #include "session.h" 7 #include "evlist.h" 8 #include "debug.h" 9 10 #define TEMPL "/tmp/perf-test-XXXXXX" 11 #define DATA_SIZE 10 12 13 static int get_temp(char *path) 14 { 15 int fd; 16 17 strcpy(path, TEMPL); 18 19 fd = mkstemp(path); 20 if (fd < 0) { 21 perror("mkstemp failed"); 22 return -1; 23 } 24 25 close(fd); 26 return 0; 27 } 28 29 static int session_write_header(char *path) 30 { 31 struct perf_session *session; 32 struct perf_data_file file = { 33 .path = path, 34 .mode = PERF_DATA_MODE_WRITE, 35 }; 36 37 session = perf_session__new(&file, false, NULL); 38 TEST_ASSERT_VAL("can't get session", session); 39 40 session->evlist = perf_evlist__new_default(); 41 TEST_ASSERT_VAL("can't get evlist", session->evlist); 42 43 perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY); 44 perf_header__set_feat(&session->header, HEADER_NRCPUS); 45 46 session->header.data_size += DATA_SIZE; 47 48 TEST_ASSERT_VAL("failed to write header", 49 !perf_session__write_header(session, session->evlist, file.fd, true)); 50 51 perf_session__delete(session); 52 53 return 0; 54 } 55 56 static int check_cpu_topology(char *path, struct cpu_map *map) 57 { 58 struct perf_session *session; 59 struct perf_data_file file = { 60 .path = path, 61 .mode = PERF_DATA_MODE_READ, 62 }; 63 int i; 64 65 session = perf_session__new(&file, false, NULL); 66 TEST_ASSERT_VAL("can't get session", session); 67 68 for (i = 0; i < session->header.env.nr_cpus_online; i++) { 69 pr_debug("CPU %d, core %d, socket %d\n", i, 70 session->header.env.cpu[i].core_id, 71 session->header.env.cpu[i].socket_id); 72 } 73 74 for (i = 0; i < map->nr; i++) { 75 TEST_ASSERT_VAL("Core ID doesn't match", 76 (session->header.env.cpu[map->map[i]].core_id == (cpu_map__get_core(map, i, NULL) & 0xffff))); 77 78 TEST_ASSERT_VAL("Socket ID doesn't match", 79 (session->header.env.cpu[map->map[i]].socket_id == cpu_map__get_socket(map, i, NULL))); 80 } 81 82 perf_session__delete(session); 83 84 return 0; 85 } 86 87 int test_session_topology(void) 88 { 89 char path[PATH_MAX]; 90 struct cpu_map *map; 91 int ret = -1; 92 93 TEST_ASSERT_VAL("can't get templ file", !get_temp(path)); 94 95 pr_debug("templ file: %s\n", path); 96 97 if (session_write_header(path)) 98 goto free_path; 99 100 map = cpu_map__new(NULL); 101 if (map == NULL) { 102 pr_debug("failed to get system cpumap\n"); 103 goto free_path; 104 } 105 106 if (check_cpu_topology(path, map)) 107 goto free_map; 108 ret = 0; 109 110 free_map: 111 cpu_map__put(map); 112 free_path: 113 unlink(path); 114 return ret; 115 } 116