These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / tools / perf / tests / topology.c

diff --git a/kernel/tools/perf/tests/topology.c b/kernel/tools/perf/tests/topology.c
new file mode 100644 (file)
index 0000000..f5bb096
--- /dev/null
+++ b/kernel/tools/perf/tests/topology.c
@@ -0,0 +1,115 @@
+#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;
+}
+
+static int session_write_header(char *path)
+{
+       struct perf_session *session;
+       struct perf_data_file file = {
+               .path = path,
+               .mode = PERF_DATA_MODE_WRITE,
+       };
+
+       session = perf_session__new(&file, 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);
+
+       session->header.data_size += DATA_SIZE;
+
+       TEST_ASSERT_VAL("failed to write header",
+                       !perf_session__write_header(session, session->evlist, file.fd, true));
+
+       perf_session__delete(session);
+
+       return 0;
+}
+
+static int check_cpu_topology(char *path, struct cpu_map *map)
+{
+       struct perf_session *session;
+       struct perf_data_file file = {
+               .path = path,
+               .mode = PERF_DATA_MODE_READ,
+       };
+       int i;
+
+       session = perf_session__new(&file, false, NULL);
+       TEST_ASSERT_VAL("can't get session", session);
+
+       for (i = 0; i < session->header.env.nr_cpus_online; i++) {
+               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;
+}
+
+int test_session_topology(void)
+{
+       char path[PATH_MAX];
+       struct cpu_map *map;
+       int ret = -1;
+
+       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;
+       }
+
+       if (check_cpu_topology(path, map))
+               goto free_map;
+       ret = 0;
+
+free_map:
+       cpu_map__put(map);
+free_path:
+       unlink(path);
+       return ret;
+}