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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 <linux/err.h>
12
13#define TEMPL "/tmp/perf-test-XXXXXX"
14#define DATA_SIZE 10
15
16static int get_temp(char *path)
17{
18 int fd;
19
20 strcpy(path, TEMPL);
21
22 fd = mkstemp(path);
23 if (fd < 0) {
24 perror("mkstemp failed");
25 return -1;
26 }
27
28 close(fd);
29 return 0;
30}
31
32static int session_write_header(char *path)
33{
34 struct perf_session *session;
35 struct perf_data data = {
36 .file = {
37 .path = path,
38 },
39 .mode = PERF_DATA_MODE_WRITE,
40 };
41
42 session = perf_session__new(&data, false, NULL);
43 TEST_ASSERT_VAL("can't get session", !IS_ERR(session));
44
45 session->evlist = perf_evlist__new_default();
46 TEST_ASSERT_VAL("can't get evlist", session->evlist);
47
48 perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY);
49 perf_header__set_feat(&session->header, HEADER_NRCPUS);
50 perf_header__set_feat(&session->header, HEADER_ARCH);
51
52 session->header.data_size += DATA_SIZE;
53
54 TEST_ASSERT_VAL("failed to write header",
55 !perf_session__write_header(session, session->evlist, data.file.fd, true));
56
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 .file = {
67 .path = path,
68 },
69 .mode = PERF_DATA_MODE_READ,
70 };
71 int i;
72
73 session = perf_session__new(&data, false, NULL);
74 TEST_ASSERT_VAL("can't get session", !IS_ERR(session));
75
76 /* On platforms with large numbers of CPUs process_cpu_topology()
77 * might issue an error while reading the perf.data file section
78 * HEADER_CPU_TOPOLOGY and the cpu_topology_map pointed to by member
79 * cpu is a NULL pointer.
80 * Example: On s390
81 * CPU 0 is on core_id 0 and physical_package_id 6
82 * CPU 1 is on core_id 1 and physical_package_id 3
83 *
84 * Core_id and physical_package_id are platform and architecture
85 * dependend and might have higher numbers than the CPU id.
86 * This actually depends on the configuration.
87 *
88 * In this case process_cpu_topology() prints error message:
89 * "socket_id number is too big. You may need to upgrade the
90 * perf tool."
91 *
92 * This is the reason why this test might be skipped.
93 */
94 if (!session->header.env.cpu)
95 return TEST_SKIP;
96
97 for (i = 0; i < session->header.env.nr_cpus_avail; i++) {
98 if (!cpu_map__has(map, i))
99 continue;
100 pr_debug("CPU %d, core %d, socket %d\n", i,
101 session->header.env.cpu[i].core_id,
102 session->header.env.cpu[i].socket_id);
103 }
104
105 for (i = 0; i < map->nr; i++) {
106 TEST_ASSERT_VAL("Core ID doesn't match",
107 (session->header.env.cpu[map->map[i]].core_id == (cpu_map__get_core(map, i, NULL) & 0xffff)));
108
109 TEST_ASSERT_VAL("Socket ID doesn't match",
110 (session->header.env.cpu[map->map[i]].socket_id == cpu_map__get_socket(map, i, NULL)));
111 }
112
113 perf_session__delete(session);
114
115 return 0;
116}
117
118int test__session_topology(struct test *test __maybe_unused, int subtest __maybe_unused)
119{
120 char path[PATH_MAX];
121 struct perf_cpu_map *map;
122 int ret = TEST_FAIL;
123
124 TEST_ASSERT_VAL("can't get templ file", !get_temp(path));
125
126 pr_debug("templ file: %s\n", path);
127
128 if (session_write_header(path))
129 goto free_path;
130
131 map = perf_cpu_map__new(NULL);
132 if (map == NULL) {
133 pr_debug("failed to get system cpumap\n");
134 goto free_path;
135 }
136
137 ret = check_cpu_topology(path, map);
138 perf_cpu_map__put(map);
139
140free_path:
141 unlink(path);
142 return ret;
143}
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 "pmus.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 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 section
79 * HEADER_CPU_TOPOLOGY and the cpu_topology_map pointed to by member
80 * cpu is a NULL pointer.
81 * Example: On s390
82 * CPU 0 is on core_id 0 and physical_package_id 6
83 * CPU 1 is on core_id 1 and physical_package_id 3
84 *
85 * Core_id and physical_package_id are platform and architecture
86 * 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 the
91 * perf tool."
92 *
93 * This is the reason why this test might be skipped. aarch64 and
94 * s390 always write this part of the header, even when the above
95 * condition is true (see do_core_id_test in header.c). So always
96 * run this test on those platforms.
97 */
98 if (!session->header.env.cpu
99 && 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 information
105 * are exposed via sysfs. Due to restriction, detail like
106 * physical_package_id will be set to -1. Hence skip this
107 * 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 CPU
126 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 core
144 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 die
160 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 socket
176 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 node
190 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);