diff options
Diffstat (limited to '')
| -rw-r--r-- | tools/perf/tests/topology.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/tools/perf/tests/topology.c b/tools/perf/tests/topology.c new file mode 100644 index 000000000..c4630cfc8 --- /dev/null +++ b/tools/perf/tests/topology.c @@ -0,0 +1,242 @@ +// 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, 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_error__init(&err); + parse_events(session->evlist, "cpu_core/cycles/", &err); + parse_events_error__exit(&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, 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; + + /* + * In powerpc pSeries platform, not all the topology information + * are exposed via sysfs. Due to restriction, detail like + * physical_package_id will be set to -1. Hence skip this + * test if physical_package_id returns -1 for cpu from perf_cpu_map. + */ + if (!strncmp(session->header.env.arch, "ppc64le", 7)) { + if (cpu__get_socket_id(perf_cpu_map__cpu(map, 0)) == -1) + 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++) { + struct perf_cpu cpu = { .cpu = i }; + + if (!perf_cpu_map__has(map, cpu)) + 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 CPU ID contains socket, die, core and CPU + for (i = 0; i < perf_cpu_map__nr(map); i++) { + id = aggr_cpu_id__cpu(perf_cpu_map__cpu(map, i), NULL); + TEST_ASSERT_VAL("Cpu map - CPU ID doesn't match", + perf_cpu_map__cpu(map, i).cpu == id.cpu.cpu); + + TEST_ASSERT_VAL("Cpu map - Core ID doesn't match", + session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].core_id == id.core); + TEST_ASSERT_VAL("Cpu map - Socket ID doesn't match", + session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id == + id.socket); + + TEST_ASSERT_VAL("Cpu map - Die ID doesn't match", + session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].die_id == id.die); + TEST_ASSERT_VAL("Cpu map - Node ID is set", id.node == -1); + TEST_ASSERT_VAL("Cpu map - Thread IDX is set", id.thread_idx == -1); + } + + // Test that core ID contains socket, die and core + for (i = 0; i < perf_cpu_map__nr(map); i++) { + id = aggr_cpu_id__core(perf_cpu_map__cpu(map, i), NULL); + TEST_ASSERT_VAL("Core map - Core ID doesn't match", + session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].core_id == id.core); + + TEST_ASSERT_VAL("Core map - Socket ID doesn't match", + session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id == + id.socket); + + TEST_ASSERT_VAL("Core map - Die ID doesn't match", + session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].die_id == id.die); + TEST_ASSERT_VAL("Core map - Node ID is set", id.node == -1); + TEST_ASSERT_VAL("Core map - Thread IDX is set", id.thread_idx == -1); + } + + // Test that die ID contains socket and die + for (i = 0; i < perf_cpu_map__nr(map); i++) { + id = aggr_cpu_id__die(perf_cpu_map__cpu(map, i), NULL); + TEST_ASSERT_VAL("Die map - Socket ID doesn't match", + session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id == + id.socket); + + TEST_ASSERT_VAL("Die map - Die ID doesn't match", + session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].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 - CPU is set", id.cpu.cpu == -1); + TEST_ASSERT_VAL("Die map - Thread IDX is set", id.thread_idx == -1); + } + + // Test that socket ID contains only socket + for (i = 0; i < perf_cpu_map__nr(map); i++) { + id = aggr_cpu_id__socket(perf_cpu_map__cpu(map, i), NULL); + TEST_ASSERT_VAL("Socket map - Socket ID doesn't match", + session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].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 - CPU is set", id.cpu.cpu == -1); + TEST_ASSERT_VAL("Socket map - Thread IDX is set", id.thread_idx == -1); + } + + // Test that node ID contains only node + for (i = 0; i < perf_cpu_map__nr(map); i++) { + id = aggr_cpu_id__node(perf_cpu_map__cpu(map, i), NULL); + TEST_ASSERT_VAL("Node map - Node ID doesn't match", + cpu__get_node(perf_cpu_map__cpu(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 - CPU is set", id.cpu.cpu == -1); + TEST_ASSERT_VAL("Node map - Thread IDX is set", id.thread_idx == -1); + } + perf_session__delete(session); + + return 0; +} + +static int test__session_topology(struct test_suite *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; +} + +DEFINE_SUITE("Session topology", session_topology); |