1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
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);
|
