summaryrefslogtreecommitdiffstats
path: root/tools/perf/tests/topology.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--tools/perf/tests/topology.c242
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);