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242 lines
7.6 KiB
242 lines
7.6 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <string.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <perf/cpumap.h> |
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#include "cpumap.h" |
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#include "tests.h" |
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#include "session.h" |
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#include "evlist.h" |
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#include "debug.h" |
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#include "pmu.h" |
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#include <linux/err.h> |
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#define TEMPL "/tmp/perf-test-XXXXXX" |
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#define DATA_SIZE 10 |
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static int get_temp(char *path) |
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{ |
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int fd; |
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strcpy(path, TEMPL); |
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fd = mkstemp(path); |
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if (fd < 0) { |
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perror("mkstemp failed"); |
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return -1; |
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} |
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close(fd); |
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return 0; |
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} |
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static int session_write_header(char *path) |
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{ |
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struct perf_session *session; |
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struct perf_data data = { |
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.path = path, |
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.mode = PERF_DATA_MODE_WRITE, |
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}; |
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session = perf_session__new(&data, NULL); |
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TEST_ASSERT_VAL("can't get session", !IS_ERR(session)); |
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if (!perf_pmu__has_hybrid()) { |
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session->evlist = evlist__new_default(); |
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TEST_ASSERT_VAL("can't get evlist", session->evlist); |
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} else { |
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struct parse_events_error err; |
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session->evlist = evlist__new(); |
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TEST_ASSERT_VAL("can't get evlist", session->evlist); |
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parse_events_error__init(&err); |
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parse_events(session->evlist, "cpu_core/cycles/", &err); |
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parse_events_error__exit(&err); |
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} |
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perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY); |
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perf_header__set_feat(&session->header, HEADER_NRCPUS); |
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perf_header__set_feat(&session->header, HEADER_ARCH); |
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session->header.data_size += DATA_SIZE; |
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TEST_ASSERT_VAL("failed to write header", |
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!perf_session__write_header(session, session->evlist, data.file.fd, true)); |
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evlist__delete(session->evlist); |
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perf_session__delete(session); |
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return 0; |
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} |
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static int check_cpu_topology(char *path, struct perf_cpu_map *map) |
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{ |
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struct perf_session *session; |
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struct perf_data data = { |
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.path = path, |
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.mode = PERF_DATA_MODE_READ, |
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}; |
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int i; |
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struct aggr_cpu_id id; |
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session = perf_session__new(&data, NULL); |
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TEST_ASSERT_VAL("can't get session", !IS_ERR(session)); |
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cpu__setup_cpunode_map(); |
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/* On platforms with large numbers of CPUs process_cpu_topology() |
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* might issue an error while reading the perf.data file section |
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* HEADER_CPU_TOPOLOGY and the cpu_topology_map pointed to by member |
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* cpu is a NULL pointer. |
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* Example: On s390 |
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* CPU 0 is on core_id 0 and physical_package_id 6 |
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* CPU 1 is on core_id 1 and physical_package_id 3 |
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* |
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* Core_id and physical_package_id are platform and architecture |
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* dependent and might have higher numbers than the CPU id. |
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* This actually depends on the configuration. |
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* |
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* In this case process_cpu_topology() prints error message: |
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* "socket_id number is too big. You may need to upgrade the |
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* perf tool." |
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* |
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* This is the reason why this test might be skipped. aarch64 and |
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* s390 always write this part of the header, even when the above |
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* condition is true (see do_core_id_test in header.c). So always |
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* run this test on those platforms. |
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*/ |
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if (!session->header.env.cpu |
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&& strncmp(session->header.env.arch, "s390", 4) |
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&& strncmp(session->header.env.arch, "aarch64", 7)) |
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return TEST_SKIP; |
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/* |
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* In powerpc pSeries platform, not all the topology information |
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* are exposed via sysfs. Due to restriction, detail like |
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* physical_package_id will be set to -1. Hence skip this |
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* test if physical_package_id returns -1 for cpu from perf_cpu_map. |
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*/ |
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if (!strncmp(session->header.env.arch, "ppc64le", 7)) { |
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if (cpu__get_socket_id(perf_cpu_map__cpu(map, 0)) == -1) |
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return TEST_SKIP; |
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} |
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TEST_ASSERT_VAL("Session header CPU map not set", session->header.env.cpu); |
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for (i = 0; i < session->header.env.nr_cpus_avail; i++) { |
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struct perf_cpu cpu = { .cpu = i }; |
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if (!perf_cpu_map__has(map, cpu)) |
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continue; |
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pr_debug("CPU %d, core %d, socket %d\n", i, |
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session->header.env.cpu[i].core_id, |
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session->header.env.cpu[i].socket_id); |
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} |
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// Test that CPU ID contains socket, die, core and CPU |
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for (i = 0; i < perf_cpu_map__nr(map); i++) { |
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id = aggr_cpu_id__cpu(perf_cpu_map__cpu(map, i), NULL); |
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TEST_ASSERT_VAL("Cpu map - CPU ID doesn't match", |
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perf_cpu_map__cpu(map, i).cpu == id.cpu.cpu); |
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TEST_ASSERT_VAL("Cpu map - Core ID doesn't match", |
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session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].core_id == id.core); |
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TEST_ASSERT_VAL("Cpu map - Socket ID doesn't match", |
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session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id == |
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id.socket); |
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TEST_ASSERT_VAL("Cpu map - Die ID doesn't match", |
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session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].die_id == id.die); |
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TEST_ASSERT_VAL("Cpu map - Node ID is set", id.node == -1); |
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TEST_ASSERT_VAL("Cpu map - Thread IDX is set", id.thread_idx == -1); |
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} |
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// Test that core ID contains socket, die and core |
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for (i = 0; i < perf_cpu_map__nr(map); i++) { |
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id = aggr_cpu_id__core(perf_cpu_map__cpu(map, i), NULL); |
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TEST_ASSERT_VAL("Core map - Core ID doesn't match", |
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session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].core_id == id.core); |
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TEST_ASSERT_VAL("Core map - Socket ID doesn't match", |
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session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id == |
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id.socket); |
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TEST_ASSERT_VAL("Core map - Die ID doesn't match", |
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session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].die_id == id.die); |
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TEST_ASSERT_VAL("Core map - Node ID is set", id.node == -1); |
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TEST_ASSERT_VAL("Core map - Thread IDX is set", id.thread_idx == -1); |
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} |
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// Test that die ID contains socket and die |
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for (i = 0; i < perf_cpu_map__nr(map); i++) { |
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id = aggr_cpu_id__die(perf_cpu_map__cpu(map, i), NULL); |
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TEST_ASSERT_VAL("Die map - Socket ID doesn't match", |
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session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id == |
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id.socket); |
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TEST_ASSERT_VAL("Die map - Die ID doesn't match", |
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session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].die_id == id.die); |
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TEST_ASSERT_VAL("Die map - Node ID is set", id.node == -1); |
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TEST_ASSERT_VAL("Die map - Core is set", id.core == -1); |
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TEST_ASSERT_VAL("Die map - CPU is set", id.cpu.cpu == -1); |
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TEST_ASSERT_VAL("Die map - Thread IDX is set", id.thread_idx == -1); |
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} |
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// Test that socket ID contains only socket |
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for (i = 0; i < perf_cpu_map__nr(map); i++) { |
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id = aggr_cpu_id__socket(perf_cpu_map__cpu(map, i), NULL); |
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TEST_ASSERT_VAL("Socket map - Socket ID doesn't match", |
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session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id == |
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id.socket); |
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TEST_ASSERT_VAL("Socket map - Node ID is set", id.node == -1); |
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TEST_ASSERT_VAL("Socket map - Die ID is set", id.die == -1); |
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TEST_ASSERT_VAL("Socket map - Core is set", id.core == -1); |
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TEST_ASSERT_VAL("Socket map - CPU is set", id.cpu.cpu == -1); |
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TEST_ASSERT_VAL("Socket map - Thread IDX is set", id.thread_idx == -1); |
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} |
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// Test that node ID contains only node |
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for (i = 0; i < perf_cpu_map__nr(map); i++) { |
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id = aggr_cpu_id__node(perf_cpu_map__cpu(map, i), NULL); |
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TEST_ASSERT_VAL("Node map - Node ID doesn't match", |
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cpu__get_node(perf_cpu_map__cpu(map, i)) == id.node); |
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TEST_ASSERT_VAL("Node map - Socket is set", id.socket == -1); |
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TEST_ASSERT_VAL("Node map - Die ID is set", id.die == -1); |
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TEST_ASSERT_VAL("Node map - Core is set", id.core == -1); |
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TEST_ASSERT_VAL("Node map - CPU is set", id.cpu.cpu == -1); |
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TEST_ASSERT_VAL("Node map - Thread IDX is set", id.thread_idx == -1); |
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} |
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perf_session__delete(session); |
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return 0; |
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} |
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static int test__session_topology(struct test_suite *test __maybe_unused, int subtest __maybe_unused) |
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{ |
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char path[PATH_MAX]; |
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struct perf_cpu_map *map; |
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int ret = TEST_FAIL; |
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TEST_ASSERT_VAL("can't get templ file", !get_temp(path)); |
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pr_debug("templ file: %s\n", path); |
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if (session_write_header(path)) |
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goto free_path; |
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map = perf_cpu_map__new(NULL); |
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if (map == NULL) { |
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pr_debug("failed to get system cpumap\n"); |
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goto free_path; |
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} |
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ret = check_cpu_topology(path, map); |
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perf_cpu_map__put(map); |
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free_path: |
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unlink(path); |
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return ret; |
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} |
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DEFINE_SUITE("Session topology", session_topology);
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