233 lines · c
1// SPDX-License-Identifier: GPL-2.02#include <string.h>3#include <stdlib.h>4#include <stdio.h>5#include <perf/cpumap.h>6#include "cpumap.h"7#include "tests.h"8#include "session.h"9#include "evlist.h"10#include "debug.h"11#include "pmus.h"12#include <linux/err.h>13 14#define TEMPL "/tmp/perf-test-XXXXXX"15#define DATA_SIZE 1016 17static int get_temp(char *path)18{19 int fd;20 21 strcpy(path, TEMPL);22 23 fd = mkstemp(path);24 if (fd < 0) {25 perror("mkstemp failed");26 return -1;27 }28 29 close(fd);30 return 0;31}32 33static int session_write_header(char *path)34{35 struct perf_session *session;36 struct perf_data data = {37 .path = path,38 .mode = PERF_DATA_MODE_WRITE,39 };40 41 session = perf_session__new(&data, NULL);42 TEST_ASSERT_VAL("can't get session", !IS_ERR(session));43 44 session->evlist = evlist__new_default();45 TEST_ASSERT_VAL("can't get evlist", session->evlist);46 47 perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY);48 perf_header__set_feat(&session->header, HEADER_NRCPUS);49 perf_header__set_feat(&session->header, HEADER_ARCH);50 51 session->header.data_size += DATA_SIZE;52 53 TEST_ASSERT_VAL("failed to write header",54 !perf_session__write_header(session, session->evlist, data.file.fd, true));55 56 evlist__delete(session->evlist);57 perf_session__delete(session);58 59 return 0;60}61 62static int check_cpu_topology(char *path, struct perf_cpu_map *map)63{64 struct perf_session *session;65 struct perf_data data = {66 .path = path,67 .mode = PERF_DATA_MODE_READ,68 };69 int i;70 struct aggr_cpu_id id;71 struct perf_cpu cpu;72 73 session = perf_session__new(&data, NULL);74 TEST_ASSERT_VAL("can't get session", !IS_ERR(session));75 cpu__setup_cpunode_map();76 77 /* On platforms with large numbers of CPUs process_cpu_topology()78 * might issue an error while reading the perf.data file section79 * HEADER_CPU_TOPOLOGY and the cpu_topology_map pointed to by member80 * cpu is a NULL pointer.81 * Example: On s39082 * CPU 0 is on core_id 0 and physical_package_id 683 * CPU 1 is on core_id 1 and physical_package_id 384 *85 * Core_id and physical_package_id are platform and architecture86 * dependent and might have higher numbers than the CPU id.87 * This actually depends on the configuration.88 *89 * In this case process_cpu_topology() prints error message:90 * "socket_id number is too big. You may need to upgrade the91 * perf tool."92 *93 * This is the reason why this test might be skipped. aarch64 and94 * s390 always write this part of the header, even when the above95 * condition is true (see do_core_id_test in header.c). So always96 * run this test on those platforms.97 */98 if (!session->header.env.cpu99 && strncmp(session->header.env.arch, "s390", 4)100 && strncmp(session->header.env.arch, "aarch64", 7))101 return TEST_SKIP;102 103 /*104 * In powerpc pSeries platform, not all the topology information105 * are exposed via sysfs. Due to restriction, detail like106 * physical_package_id will be set to -1. Hence skip this107 * test if physical_package_id returns -1 for cpu from perf_cpu_map.108 */109 if (!strncmp(session->header.env.arch, "ppc64le", 7)) {110 if (cpu__get_socket_id(perf_cpu_map__cpu(map, 0)) == -1)111 return TEST_SKIP;112 }113 114 TEST_ASSERT_VAL("Session header CPU map not set", session->header.env.cpu);115 116 for (i = 0; i < session->header.env.nr_cpus_avail; i++) {117 cpu.cpu = i;118 if (!perf_cpu_map__has(map, cpu))119 continue;120 pr_debug("CPU %d, core %d, socket %d\n", i,121 session->header.env.cpu[i].core_id,122 session->header.env.cpu[i].socket_id);123 }124 125 // Test that CPU ID contains socket, die, core and CPU126 perf_cpu_map__for_each_cpu(cpu, i, map) {127 id = aggr_cpu_id__cpu(cpu, NULL);128 TEST_ASSERT_VAL("Cpu map - CPU ID doesn't match",129 cpu.cpu == id.cpu.cpu);130 131 TEST_ASSERT_VAL("Cpu map - Core ID doesn't match",132 session->header.env.cpu[cpu.cpu].core_id == id.core);133 TEST_ASSERT_VAL("Cpu map - Socket ID doesn't match",134 session->header.env.cpu[cpu.cpu].socket_id ==135 id.socket);136 137 TEST_ASSERT_VAL("Cpu map - Die ID doesn't match",138 session->header.env.cpu[cpu.cpu].die_id == id.die);139 TEST_ASSERT_VAL("Cpu map - Node ID is set", id.node == -1);140 TEST_ASSERT_VAL("Cpu map - Thread IDX is set", id.thread_idx == -1);141 }142 143 // Test that core ID contains socket, die and core144 perf_cpu_map__for_each_cpu(cpu, i, map) {145 id = aggr_cpu_id__core(cpu, NULL);146 TEST_ASSERT_VAL("Core map - Core ID doesn't match",147 session->header.env.cpu[cpu.cpu].core_id == id.core);148 149 TEST_ASSERT_VAL("Core map - Socket ID doesn't match",150 session->header.env.cpu[cpu.cpu].socket_id ==151 id.socket);152 153 TEST_ASSERT_VAL("Core map - Die ID doesn't match",154 session->header.env.cpu[cpu.cpu].die_id == id.die);155 TEST_ASSERT_VAL("Core map - Node ID is set", id.node == -1);156 TEST_ASSERT_VAL("Core map - Thread IDX is set", id.thread_idx == -1);157 }158 159 // Test that die ID contains socket and die160 perf_cpu_map__for_each_cpu(cpu, i, map) {161 id = aggr_cpu_id__die(cpu, NULL);162 TEST_ASSERT_VAL("Die map - Socket ID doesn't match",163 session->header.env.cpu[cpu.cpu].socket_id ==164 id.socket);165 166 TEST_ASSERT_VAL("Die map - Die ID doesn't match",167 session->header.env.cpu[cpu.cpu].die_id == id.die);168 169 TEST_ASSERT_VAL("Die map - Node ID is set", id.node == -1);170 TEST_ASSERT_VAL("Die map - Core is set", id.core == -1);171 TEST_ASSERT_VAL("Die map - CPU is set", id.cpu.cpu == -1);172 TEST_ASSERT_VAL("Die map - Thread IDX is set", id.thread_idx == -1);173 }174 175 // Test that socket ID contains only socket176 perf_cpu_map__for_each_cpu(cpu, i, map) {177 id = aggr_cpu_id__socket(cpu, NULL);178 TEST_ASSERT_VAL("Socket map - Socket ID doesn't match",179 session->header.env.cpu[cpu.cpu].socket_id ==180 id.socket);181 182 TEST_ASSERT_VAL("Socket map - Node ID is set", id.node == -1);183 TEST_ASSERT_VAL("Socket map - Die ID is set", id.die == -1);184 TEST_ASSERT_VAL("Socket map - Core is set", id.core == -1);185 TEST_ASSERT_VAL("Socket map - CPU is set", id.cpu.cpu == -1);186 TEST_ASSERT_VAL("Socket map - Thread IDX is set", id.thread_idx == -1);187 }188 189 // Test that node ID contains only node190 perf_cpu_map__for_each_cpu(cpu, i, map) {191 id = aggr_cpu_id__node(cpu, NULL);192 TEST_ASSERT_VAL("Node map - Node ID doesn't match",193 cpu__get_node(cpu) == id.node);194 TEST_ASSERT_VAL("Node map - Socket is set", id.socket == -1);195 TEST_ASSERT_VAL("Node map - Die ID is set", id.die == -1);196 TEST_ASSERT_VAL("Node map - Core is set", id.core == -1);197 TEST_ASSERT_VAL("Node map - CPU is set", id.cpu.cpu == -1);198 TEST_ASSERT_VAL("Node map - Thread IDX is set", id.thread_idx == -1);199 }200 perf_session__delete(session);201 202 return 0;203}204 205static int test__session_topology(struct test_suite *test __maybe_unused, int subtest __maybe_unused)206{207 char path[PATH_MAX];208 struct perf_cpu_map *map;209 int ret = TEST_FAIL;210 211 TEST_ASSERT_VAL("can't get templ file", !get_temp(path));212 213 pr_debug("templ file: %s\n", path);214 215 if (session_write_header(path))216 goto free_path;217 218 map = perf_cpu_map__new_online_cpus();219 if (map == NULL) {220 pr_debug("failed to get system cpumap\n");221 goto free_path;222 }223 224 ret = check_cpu_topology(path, map);225 perf_cpu_map__put(map);226 227free_path:228 unlink(path);229 return ret;230}231 232DEFINE_SUITE("Session topology", session_topology);233