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1// SPDX-License-Identifier: GPL-2.0
2#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 "pmu.h"
12#include <linux/err.h>
13
14#define TEMPL "/tmp/perf-test-XXXXXX"
15#define DATA_SIZE 10
16
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 if (!perf_pmu__has_hybrid()) {
45 session->evlist = evlist__new_default();
46 TEST_ASSERT_VAL("can't get evlist", session->evlist);
47 } else {
48 struct parse_events_error err;
49
50 session->evlist = evlist__new();
51 TEST_ASSERT_VAL("can't get evlist", session->evlist);
52 parse_events_error__init(&err);
53 parse_events(session->evlist, "cpu_core/cycles/", &err);
54 parse_events_error__exit(&err);
55 }
56
57 perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY);
58 perf_header__set_feat(&session->header, HEADER_NRCPUS);
59 perf_header__set_feat(&session->header, HEADER_ARCH);
60
61 session->header.data_size += DATA_SIZE;
62
63 TEST_ASSERT_VAL("failed to write header",
64 !perf_session__write_header(session, session->evlist, data.file.fd, true));
65
66 evlist__delete(session->evlist);
67 perf_session__delete(session);
68
69 return 0;
70}
71
72static int check_cpu_topology(char *path, struct perf_cpu_map *map)
73{
74 struct perf_session *session;
75 struct perf_data data = {
76 .path = path,
77 .mode = PERF_DATA_MODE_READ,
78 };
79 int i;
80 struct aggr_cpu_id id;
81
82 session = perf_session__new(&data, NULL);
83 TEST_ASSERT_VAL("can't get session", !IS_ERR(session));
84 cpu__setup_cpunode_map();
85
86 /* On platforms with large numbers of CPUs process_cpu_topology()
87 * might issue an error while reading the perf.data file section
88 * HEADER_CPU_TOPOLOGY and the cpu_topology_map pointed to by member
89 * cpu is a NULL pointer.
90 * Example: On s390
91 * CPU 0 is on core_id 0 and physical_package_id 6
92 * CPU 1 is on core_id 1 and physical_package_id 3
93 *
94 * Core_id and physical_package_id are platform and architecture
95 * dependent and might have higher numbers than the CPU id.
96 * This actually depends on the configuration.
97 *
98 * In this case process_cpu_topology() prints error message:
99 * "socket_id number is too big. You may need to upgrade the
100 * perf tool."
101 *
102 * This is the reason why this test might be skipped. aarch64 and
103 * s390 always write this part of the header, even when the above
104 * condition is true (see do_core_id_test in header.c). So always
105 * run this test on those platforms.
106 */
107 if (!session->header.env.cpu
108 && strncmp(session->header.env.arch, "s390", 4)
109 && strncmp(session->header.env.arch, "aarch64", 7))
110 return TEST_SKIP;
111
112 /*
113 * In powerpc pSeries platform, not all the topology information
114 * are exposed via sysfs. Due to restriction, detail like
115 * physical_package_id will be set to -1. Hence skip this
116 * test if physical_package_id returns -1 for cpu from perf_cpu_map.
117 */
118 if (!strncmp(session->header.env.arch, "ppc64le", 7)) {
119 if (cpu__get_socket_id(perf_cpu_map__cpu(map, 0)) == -1)
120 return TEST_SKIP;
121 }
122
123 TEST_ASSERT_VAL("Session header CPU map not set", session->header.env.cpu);
124
125 for (i = 0; i < session->header.env.nr_cpus_avail; i++) {
126 struct perf_cpu cpu = { .cpu = i };
127
128 if (!perf_cpu_map__has(map, cpu))
129 continue;
130 pr_debug("CPU %d, core %d, socket %d\n", i,
131 session->header.env.cpu[i].core_id,
132 session->header.env.cpu[i].socket_id);
133 }
134
135 // Test that CPU ID contains socket, die, core and CPU
136 for (i = 0; i < perf_cpu_map__nr(map); i++) {
137 id = aggr_cpu_id__cpu(perf_cpu_map__cpu(map, i), NULL);
138 TEST_ASSERT_VAL("Cpu map - CPU ID doesn't match",
139 perf_cpu_map__cpu(map, i).cpu == id.cpu.cpu);
140
141 TEST_ASSERT_VAL("Cpu map - Core ID doesn't match",
142 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].core_id == id.core);
143 TEST_ASSERT_VAL("Cpu map - Socket ID doesn't match",
144 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id ==
145 id.socket);
146
147 TEST_ASSERT_VAL("Cpu map - Die ID doesn't match",
148 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].die_id == id.die);
149 TEST_ASSERT_VAL("Cpu map - Node ID is set", id.node == -1);
150 TEST_ASSERT_VAL("Cpu map - Thread IDX is set", id.thread_idx == -1);
151 }
152
153 // Test that core ID contains socket, die and core
154 for (i = 0; i < perf_cpu_map__nr(map); i++) {
155 id = aggr_cpu_id__core(perf_cpu_map__cpu(map, i), NULL);
156 TEST_ASSERT_VAL("Core map - Core ID doesn't match",
157 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].core_id == id.core);
158
159 TEST_ASSERT_VAL("Core map - Socket ID doesn't match",
160 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id ==
161 id.socket);
162
163 TEST_ASSERT_VAL("Core map - Die ID doesn't match",
164 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].die_id == id.die);
165 TEST_ASSERT_VAL("Core map - Node ID is set", id.node == -1);
166 TEST_ASSERT_VAL("Core map - Thread IDX is set", id.thread_idx == -1);
167 }
168
169 // Test that die ID contains socket and die
170 for (i = 0; i < perf_cpu_map__nr(map); i++) {
171 id = aggr_cpu_id__die(perf_cpu_map__cpu(map, i), NULL);
172 TEST_ASSERT_VAL("Die map - Socket ID doesn't match",
173 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id ==
174 id.socket);
175
176 TEST_ASSERT_VAL("Die map - Die ID doesn't match",
177 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].die_id == id.die);
178
179 TEST_ASSERT_VAL("Die map - Node ID is set", id.node == -1);
180 TEST_ASSERT_VAL("Die map - Core is set", id.core == -1);
181 TEST_ASSERT_VAL("Die map - CPU is set", id.cpu.cpu == -1);
182 TEST_ASSERT_VAL("Die map - Thread IDX is set", id.thread_idx == -1);
183 }
184
185 // Test that socket ID contains only socket
186 for (i = 0; i < perf_cpu_map__nr(map); i++) {
187 id = aggr_cpu_id__socket(perf_cpu_map__cpu(map, i), NULL);
188 TEST_ASSERT_VAL("Socket map - Socket ID doesn't match",
189 session->header.env.cpu[perf_cpu_map__cpu(map, i).cpu].socket_id ==
190 id.socket);
191
192 TEST_ASSERT_VAL("Socket map - Node ID is set", id.node == -1);
193 TEST_ASSERT_VAL("Socket map - Die ID is set", id.die == -1);
194 TEST_ASSERT_VAL("Socket map - Core is set", id.core == -1);
195 TEST_ASSERT_VAL("Socket map - CPU is set", id.cpu.cpu == -1);
196 TEST_ASSERT_VAL("Socket map - Thread IDX is set", id.thread_idx == -1);
197 }
198
199 // Test that node ID contains only node
200 for (i = 0; i < perf_cpu_map__nr(map); i++) {
201 id = aggr_cpu_id__node(perf_cpu_map__cpu(map, i), NULL);
202 TEST_ASSERT_VAL("Node map - Node ID doesn't match",
203 cpu__get_node(perf_cpu_map__cpu(map, i)) == id.node);
204 TEST_ASSERT_VAL("Node map - Socket is set", id.socket == -1);
205 TEST_ASSERT_VAL("Node map - Die ID is set", id.die == -1);
206 TEST_ASSERT_VAL("Node map - Core is set", id.core == -1);
207 TEST_ASSERT_VAL("Node map - CPU is set", id.cpu.cpu == -1);
208 TEST_ASSERT_VAL("Node map - Thread IDX is set", id.thread_idx == -1);
209 }
210 perf_session__delete(session);
211
212 return 0;
213}
214
215static int test__session_topology(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
216{
217 char path[PATH_MAX];
218 struct perf_cpu_map *map;
219 int ret = TEST_FAIL;
220
221 TEST_ASSERT_VAL("can't get templ file", !get_temp(path));
222
223 pr_debug("templ file: %s\n", path);
224
225 if (session_write_header(path))
226 goto free_path;
227
228 map = perf_cpu_map__new(NULL);
229 if (map == NULL) {
230 pr_debug("failed to get system cpumap\n");
231 goto free_path;
232 }
233
234 ret = check_cpu_topology(path, map);
235 perf_cpu_map__put(map);
236
237free_path:
238 unlink(path);
239 return ret;
240}
241
242DEFINE_SUITE("Session topology", session_topology);
1// SPDX-License-Identifier: GPL-2.0
2#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 "pmu.h"
12#include <linux/err.h>
13
14#define TEMPL "/tmp/perf-test-XXXXXX"
15#define DATA_SIZE 10
16
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, false, NULL);
42 TEST_ASSERT_VAL("can't get session", !IS_ERR(session));
43
44 if (!perf_pmu__has_hybrid()) {
45 session->evlist = evlist__new_default();
46 TEST_ASSERT_VAL("can't get evlist", session->evlist);
47 } else {
48 struct parse_events_error err;
49
50 session->evlist = evlist__new();
51 TEST_ASSERT_VAL("can't get evlist", session->evlist);
52 parse_events(session->evlist, "cpu_core/cycles/", &err);
53 }
54
55 perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY);
56 perf_header__set_feat(&session->header, HEADER_NRCPUS);
57 perf_header__set_feat(&session->header, HEADER_ARCH);
58
59 session->header.data_size += DATA_SIZE;
60
61 TEST_ASSERT_VAL("failed to write header",
62 !perf_session__write_header(session, session->evlist, data.file.fd, true));
63
64 evlist__delete(session->evlist);
65 perf_session__delete(session);
66
67 return 0;
68}
69
70static int check_cpu_topology(char *path, struct perf_cpu_map *map)
71{
72 struct perf_session *session;
73 struct perf_data data = {
74 .path = path,
75 .mode = PERF_DATA_MODE_READ,
76 };
77 int i;
78 struct aggr_cpu_id id;
79
80 session = perf_session__new(&data, false, NULL);
81 TEST_ASSERT_VAL("can't get session", !IS_ERR(session));
82 cpu__setup_cpunode_map();
83
84 /* On platforms with large numbers of CPUs process_cpu_topology()
85 * might issue an error while reading the perf.data file section
86 * HEADER_CPU_TOPOLOGY and the cpu_topology_map pointed to by member
87 * cpu is a NULL pointer.
88 * Example: On s390
89 * CPU 0 is on core_id 0 and physical_package_id 6
90 * CPU 1 is on core_id 1 and physical_package_id 3
91 *
92 * Core_id and physical_package_id are platform and architecture
93 * dependent and might have higher numbers than the CPU id.
94 * This actually depends on the configuration.
95 *
96 * In this case process_cpu_topology() prints error message:
97 * "socket_id number is too big. You may need to upgrade the
98 * perf tool."
99 *
100 * This is the reason why this test might be skipped. aarch64 and
101 * s390 always write this part of the header, even when the above
102 * condition is true (see do_core_id_test in header.c). So always
103 * run this test on those platforms.
104 */
105 if (!session->header.env.cpu
106 && strncmp(session->header.env.arch, "s390", 4)
107 && strncmp(session->header.env.arch, "aarch64", 7))
108 return TEST_SKIP;
109
110 TEST_ASSERT_VAL("Session header CPU map not set", session->header.env.cpu);
111
112 for (i = 0; i < session->header.env.nr_cpus_avail; i++) {
113 if (!cpu_map__has(map, i))
114 continue;
115 pr_debug("CPU %d, core %d, socket %d\n", i,
116 session->header.env.cpu[i].core_id,
117 session->header.env.cpu[i].socket_id);
118 }
119
120 // Test that core ID contains socket, die and core
121 for (i = 0; i < map->nr; i++) {
122 id = cpu_map__get_core(map, i, NULL);
123 TEST_ASSERT_VAL("Core map - Core ID doesn't match",
124 session->header.env.cpu[map->map[i]].core_id == id.core);
125
126 TEST_ASSERT_VAL("Core map - Socket ID doesn't match",
127 session->header.env.cpu[map->map[i]].socket_id == id.socket);
128
129 TEST_ASSERT_VAL("Core map - Die ID doesn't match",
130 session->header.env.cpu[map->map[i]].die_id == id.die);
131 TEST_ASSERT_VAL("Core map - Node ID is set", id.node == -1);
132 TEST_ASSERT_VAL("Core map - Thread is set", id.thread == -1);
133 }
134
135 // Test that die ID contains socket and die
136 for (i = 0; i < map->nr; i++) {
137 id = cpu_map__get_die(map, i, NULL);
138 TEST_ASSERT_VAL("Die map - Socket ID doesn't match",
139 session->header.env.cpu[map->map[i]].socket_id == id.socket);
140
141 TEST_ASSERT_VAL("Die map - Die ID doesn't match",
142 session->header.env.cpu[map->map[i]].die_id == id.die);
143
144 TEST_ASSERT_VAL("Die map - Node ID is set", id.node == -1);
145 TEST_ASSERT_VAL("Die map - Core is set", id.core == -1);
146 TEST_ASSERT_VAL("Die map - Thread is set", id.thread == -1);
147 }
148
149 // Test that socket ID contains only socket
150 for (i = 0; i < map->nr; i++) {
151 id = cpu_map__get_socket(map, i, NULL);
152 TEST_ASSERT_VAL("Socket map - Socket ID doesn't match",
153 session->header.env.cpu[map->map[i]].socket_id == id.socket);
154
155 TEST_ASSERT_VAL("Socket map - Node ID is set", id.node == -1);
156 TEST_ASSERT_VAL("Socket map - Die ID is set", id.die == -1);
157 TEST_ASSERT_VAL("Socket map - Core is set", id.core == -1);
158 TEST_ASSERT_VAL("Socket map - Thread is set", id.thread == -1);
159 }
160
161 // Test that node ID contains only node
162 for (i = 0; i < map->nr; i++) {
163 id = cpu_map__get_node(map, i, NULL);
164 TEST_ASSERT_VAL("Node map - Node ID doesn't match",
165 cpu__get_node(map->map[i]) == id.node);
166 TEST_ASSERT_VAL("Node map - Socket is set", id.socket == -1);
167 TEST_ASSERT_VAL("Node map - Die ID is set", id.die == -1);
168 TEST_ASSERT_VAL("Node map - Core is set", id.core == -1);
169 TEST_ASSERT_VAL("Node map - Thread is set", id.thread == -1);
170 }
171 perf_session__delete(session);
172
173 return 0;
174}
175
176int test__session_topology(struct test *test __maybe_unused, int subtest __maybe_unused)
177{
178 char path[PATH_MAX];
179 struct perf_cpu_map *map;
180 int ret = TEST_FAIL;
181
182 TEST_ASSERT_VAL("can't get templ file", !get_temp(path));
183
184 pr_debug("templ file: %s\n", path);
185
186 if (session_write_header(path))
187 goto free_path;
188
189 map = perf_cpu_map__new(NULL);
190 if (map == NULL) {
191 pr_debug("failed to get system cpumap\n");
192 goto free_path;
193 }
194
195 ret = check_cpu_topology(path, map);
196 perf_cpu_map__put(map);
197
198free_path:
199 unlink(path);
200 return ret;
201}