1 // SPDX-License-Identifier: GPL-2.0 2 #include <string.h> 3 #include <stdlib.h> 4 #include <stdio.h> 5 #include "tests.h" 6 #include "util.h" 7 #include "session.h" 8 #include "evlist.h" 9 #include "debug.h" 10 11 #define TEMPL "/tmp/perf-test-XXXXXX" 12 #define DATA_SIZE 10 13 14 static int get_temp(char *path) 15 { 16 int fd; 17 18 strcpy(path, TEMPL); 19 20 fd = mkstemp(path); 21 if (fd < 0) { 22 perror("mkstemp failed"); 23 return -1; 24 } 25 26 close(fd); 27 return 0; 28 } 29 30 static int session_write_header(char *path) 31 { 32 struct perf_session *session; 33 struct perf_data data = { 34 .file = { 35 .path = path, 36 }, 37 .mode = PERF_DATA_MODE_WRITE, 38 }; 39 40 session = perf_session__new(&data, false, NULL); 41 TEST_ASSERT_VAL("can't get session", session); 42 43 session->evlist = perf_evlist__new_default(); 44 TEST_ASSERT_VAL("can't get evlist", session->evlist); 45 46 perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY); 47 perf_header__set_feat(&session->header, HEADER_NRCPUS); 48 49 session->header.data_size += DATA_SIZE; 50 51 TEST_ASSERT_VAL("failed to write header", 52 !perf_session__write_header(session, session->evlist, data.file.fd, true)); 53 54 perf_session__delete(session); 55 56 return 0; 57 } 58 59 static int check_cpu_topology(char *path, struct cpu_map *map) 60 { 61 struct perf_session *session; 62 struct perf_data data = { 63 .file = { 64 .path = path, 65 }, 66 .mode = PERF_DATA_MODE_READ, 67 }; 68 int i; 69 70 session = perf_session__new(&data, false, NULL); 71 TEST_ASSERT_VAL("can't get session", session); 72 73 for (i = 0; i < session->header.env.nr_cpus_avail; i++) { 74 if (!cpu_map__has(map, i)) 75 continue; 76 pr_debug("CPU %d, core %d, socket %d\n", i, 77 session->header.env.cpu[i].core_id, 78 session->header.env.cpu[i].socket_id); 79 } 80 81 for (i = 0; i < map->nr; i++) { 82 TEST_ASSERT_VAL("Core ID doesn't match", 83 (session->header.env.cpu[map->map[i]].core_id == (cpu_map__get_core(map, i, NULL) & 0xffff))); 84 85 TEST_ASSERT_VAL("Socket ID doesn't match", 86 (session->header.env.cpu[map->map[i]].socket_id == cpu_map__get_socket(map, i, NULL))); 87 } 88 89 perf_session__delete(session); 90 91 return 0; 92 } 93 94 int test__session_topology(struct test *test __maybe_unused, int subtest __maybe_unused) 95 { 96 char path[PATH_MAX]; 97 struct cpu_map *map; 98 int ret = -1; 99 100 TEST_ASSERT_VAL("can't get templ file", !get_temp(path)); 101 102 pr_debug("templ file: %s\n", path); 103 104 if (session_write_header(path)) 105 goto free_path; 106 107 map = cpu_map__new(NULL); 108 if (map == NULL) { 109 pr_debug("failed to get system cpumap\n"); 110 goto free_path; 111 } 112 113 if (check_cpu_topology(path, map)) 114 goto free_map; 115 ret = 0; 116 117 free_map: 118 cpu_map__put(map); 119 free_path: 120 unlink(path); 121 return ret; 122 } 123