Release 4.18 tools/perf/tests/topology.c
// SPDX-License-Identifier: GPL-2.0
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "tests.h"
#include "util.h"
#include "session.h"
#include "evlist.h"
#include "debug.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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kan Liang | 52 | 100.00% | 1 | 100.00% |
| Total | 52 | 100.00% | 1 | 100.00% |
static int session_write_header(char *path)
{
struct perf_session *session;
struct perf_data data = {
.file = {
.path = path,
},
.mode = PERF_DATA_MODE_WRITE,
};
session = perf_session__new(&data, false, NULL);
TEST_ASSERT_VAL("can't get session", session);
session->evlist = perf_evlist__new_default();
TEST_ASSERT_VAL("can't get evlist", session->evlist);
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));
perf_session__delete(session);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kan Liang | 119 | 85.00% | 1 | 25.00% |
| Jiri Olsa | 11 | 7.86% | 2 | 50.00% |
| Thomas Richter | 10 | 7.14% | 1 | 25.00% |
| Total | 140 | 100.00% | 4 | 100.00% |
static int check_cpu_topology(char *path, struct cpu_map *map)
{
struct perf_session *session;
struct perf_data data = {
.file = {
.path = path,
},
.mode = PERF_DATA_MODE_READ,
};
int i;
session = perf_session__new(&data, false, NULL);
TEST_ASSERT_VAL("can't get session", session);
/* 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
* dependend 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.
*/
if (!session->header.env.cpu)
return TEST_SKIP;
for (i = 0; i < session->header.env.nr_cpus_avail; i++) {
if (!cpu_map__has(map, i))
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);
}
for (i = 0; i < map->nr; i++) {
TEST_ASSERT_VAL("Core ID doesn't match",
(session->header.env.cpu[map->map[i]].core_id == (cpu_map__get_core(map, i, NULL) & 0xffff)));
TEST_ASSERT_VAL("Socket ID doesn't match",
(session->header.env.cpu[map->map[i]].socket_id == cpu_map__get_socket(map, i, NULL)));
}
perf_session__delete(session);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kan Liang | 201 | 83.75% | 1 | 16.67% |
| Thomas Richter | 15 | 6.25% | 1 | 16.67% |
| Jan Stancek | 12 | 5.00% | 1 | 16.67% |
| Jiri Olsa | 12 | 5.00% | 3 | 50.00% |
| Total | 240 | 100.00% | 6 | 100.00% |
int test__session_topology(struct test *test __maybe_unused, int subtest __maybe_unused)
{
char path[PATH_MAX];
struct 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 = cpu_map__new(NULL);
if (map == NULL) {
pr_debug("failed to get system cpumap\n");
goto free_path;
}
ret = check_cpu_topology(path, map);
cpu_map__put(map);
free_path:
unlink(path);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kan Liang | 93 | 87.74% | 1 | 25.00% |
| Arnaldo Carvalho de Melo | 10 | 9.43% | 2 | 50.00% |
| Thomas Richter | 3 | 2.83% | 1 | 25.00% |
| Total | 106 | 100.00% | 4 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kan Liang | 497 | 87.04% | 1 | 10.00% |
| Thomas Richter | 28 | 4.90% | 2 | 20.00% |
| Jiri Olsa | 23 | 4.03% | 3 | 30.00% |
| Jan Stancek | 12 | 2.10% | 1 | 10.00% |
| Arnaldo Carvalho de Melo | 10 | 1.75% | 2 | 20.00% |
| Greg Kroah-Hartman | 1 | 0.18% | 1 | 10.00% |
| Total | 571 | 100.00% | 10 | 100.00% |
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