| // SPDX-License-Identifier: GPL-2.0 |
| #include <string.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <perf/cpumap.h> |
| #include "cpumap.h" |
| #include "tests.h" |
| #include "session.h" |
| #include "evlist.h" |
| #include "debug.h" |
| #include "pmu.h" |
| #include <linux/err.h> |
| |
| #define TEMPL "/tmp/perf-test-XXXXXX" |
| #define DATA_SIZE 10 |
| |
| static int get_temp(char *path) |
| { |
| int fd; |
| |
| strcpy(path, TEMPL); |
| |
| fd = mkstemp(path); |
| if (fd < 0) { |
| perror("mkstemp failed"); |
| return -1; |
| } |
| |
| close(fd); |
| return 0; |
| } |
| |
| static int session_write_header(char *path) |
| { |
| struct perf_session *session; |
| struct perf_data data = { |
| .path = path, |
| .mode = PERF_DATA_MODE_WRITE, |
| }; |
| |
| session = perf_session__new(&data, false, NULL); |
| TEST_ASSERT_VAL("can't get session", !IS_ERR(session)); |
| |
| if (!perf_pmu__has_hybrid()) { |
| session->evlist = evlist__new_default(); |
| TEST_ASSERT_VAL("can't get evlist", session->evlist); |
| } else { |
| struct parse_events_error err; |
| |
| session->evlist = evlist__new(); |
| TEST_ASSERT_VAL("can't get evlist", session->evlist); |
| parse_events(session->evlist, "cpu_core/cycles/", &err); |
| } |
| |
| perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY); |
| perf_header__set_feat(&session->header, HEADER_NRCPUS); |
| perf_header__set_feat(&session->header, HEADER_ARCH); |
| |
| session->header.data_size += DATA_SIZE; |
| |
| TEST_ASSERT_VAL("failed to write header", |
| !perf_session__write_header(session, session->evlist, data.file.fd, true)); |
| |
| evlist__delete(session->evlist); |
| perf_session__delete(session); |
| |
| return 0; |
| } |
| |
| static int check_cpu_topology(char *path, struct perf_cpu_map *map) |
| { |
| struct perf_session *session; |
| struct perf_data data = { |
| .path = path, |
| .mode = PERF_DATA_MODE_READ, |
| }; |
| int i; |
| struct aggr_cpu_id id; |
| |
| session = perf_session__new(&data, false, NULL); |
| TEST_ASSERT_VAL("can't get session", !IS_ERR(session)); |
| cpu__setup_cpunode_map(); |
| |
| /* On platforms with large numbers of CPUs process_cpu_topology() |
| * might issue an error while reading the perf.data file section |
| * HEADER_CPU_TOPOLOGY and the cpu_topology_map pointed to by member |
| * cpu is a NULL pointer. |
| * Example: On s390 |
| * CPU 0 is on core_id 0 and physical_package_id 6 |
| * CPU 1 is on core_id 1 and physical_package_id 3 |
| * |
| * Core_id and physical_package_id are platform and architecture |
| * dependent and might have higher numbers than the CPU id. |
| * This actually depends on the configuration. |
| * |
| * In this case process_cpu_topology() prints error message: |
| * "socket_id number is too big. You may need to upgrade the |
| * perf tool." |
| * |
| * This is the reason why this test might be skipped. aarch64 and |
| * s390 always write this part of the header, even when the above |
| * condition is true (see do_core_id_test in header.c). So always |
| * run this test on those platforms. |
| */ |
| if (!session->header.env.cpu |
| && strncmp(session->header.env.arch, "s390", 4) |
| && strncmp(session->header.env.arch, "aarch64", 7)) |
| return TEST_SKIP; |
| |
| TEST_ASSERT_VAL("Session header CPU map not set", session->header.env.cpu); |
| |
| for (i = 0; i < session->header.env.nr_cpus_avail; i++) { |
| if (!cpu_map__has(map, i)) |
| continue; |
| pr_debug("CPU %d, core %d, socket %d\n", i, |
| session->header.env.cpu[i].core_id, |
| session->header.env.cpu[i].socket_id); |
| } |
| |
| // Test that core ID contains socket, die and core |
| for (i = 0; i < map->nr; i++) { |
| id = cpu_map__get_core(map, i, NULL); |
| TEST_ASSERT_VAL("Core map - Core ID doesn't match", |
| session->header.env.cpu[map->map[i]].core_id == id.core); |
| |
| TEST_ASSERT_VAL("Core map - Socket ID doesn't match", |
| session->header.env.cpu[map->map[i]].socket_id == id.socket); |
| |
| TEST_ASSERT_VAL("Core map - Die ID doesn't match", |
| session->header.env.cpu[map->map[i]].die_id == id.die); |
| TEST_ASSERT_VAL("Core map - Node ID is set", id.node == -1); |
| TEST_ASSERT_VAL("Core map - Thread is set", id.thread == -1); |
| } |
| |
| // Test that die ID contains socket and die |
| for (i = 0; i < map->nr; i++) { |
| id = cpu_map__get_die(map, i, NULL); |
| TEST_ASSERT_VAL("Die map - Socket ID doesn't match", |
| session->header.env.cpu[map->map[i]].socket_id == id.socket); |
| |
| TEST_ASSERT_VAL("Die map - Die ID doesn't match", |
| session->header.env.cpu[map->map[i]].die_id == id.die); |
| |
| TEST_ASSERT_VAL("Die map - Node ID is set", id.node == -1); |
| TEST_ASSERT_VAL("Die map - Core is set", id.core == -1); |
| TEST_ASSERT_VAL("Die map - Thread is set", id.thread == -1); |
| } |
| |
| // Test that socket ID contains only socket |
| for (i = 0; i < map->nr; i++) { |
| id = cpu_map__get_socket(map, i, NULL); |
| TEST_ASSERT_VAL("Socket map - Socket ID doesn't match", |
| session->header.env.cpu[map->map[i]].socket_id == id.socket); |
| |
| TEST_ASSERT_VAL("Socket map - Node ID is set", id.node == -1); |
| TEST_ASSERT_VAL("Socket map - Die ID is set", id.die == -1); |
| TEST_ASSERT_VAL("Socket map - Core is set", id.core == -1); |
| TEST_ASSERT_VAL("Socket map - Thread is set", id.thread == -1); |
| } |
| |
| // Test that node ID contains only node |
| for (i = 0; i < map->nr; i++) { |
| id = cpu_map__get_node(map, i, NULL); |
| TEST_ASSERT_VAL("Node map - Node ID doesn't match", |
| cpu__get_node(map->map[i]) == id.node); |
| TEST_ASSERT_VAL("Node map - Socket is set", id.socket == -1); |
| TEST_ASSERT_VAL("Node map - Die ID is set", id.die == -1); |
| TEST_ASSERT_VAL("Node map - Core is set", id.core == -1); |
| TEST_ASSERT_VAL("Node map - Thread is set", id.thread == -1); |
| } |
| perf_session__delete(session); |
| |
| return 0; |
| } |
| |
| int test__session_topology(struct test *test __maybe_unused, int subtest __maybe_unused) |
| { |
| char path[PATH_MAX]; |
| struct perf_cpu_map *map; |
| int ret = TEST_FAIL; |
| |
| TEST_ASSERT_VAL("can't get templ file", !get_temp(path)); |
| |
| pr_debug("templ file: %s\n", path); |
| |
| if (session_write_header(path)) |
| goto free_path; |
| |
| map = perf_cpu_map__new(NULL); |
| if (map == NULL) { |
| pr_debug("failed to get system cpumap\n"); |
| goto free_path; |
| } |
| |
| ret = check_cpu_topology(path, map); |
| perf_cpu_map__put(map); |
| |
| free_path: |
| unlink(path); |
| return ret; |
| } |