VLOG_DEFINE_THIS_MODULE(ovs_numa);
-#define MAX_CPU_SOCKETS 128
+#define MAX_NUMA_NODES 128
-/* Cpu socket. */
-struct cpu_socket {
- struct hmap_node hmap_node; /* In the 'all_cpu_sockets'. */
- struct list cores; /* List of cpu cores on the socket. */
- int socket_id; /* Socket id. */
+/* numa node. */
+struct numa_node {
+ struct hmap_node hmap_node; /* In the 'all_numa_nodes'. */
+ struct list cores; /* List of cpu cores on the numa node. */
+ int numa_id; /* numa node id. */
};
-/* Cpu core on a cpu socket. */
+/* Cpu core on a numa node. */
struct cpu_core {
struct hmap_node hmap_node;/* In the 'all_cpu_cores'. */
- struct list list_node; /* In 'cpu_socket->cores' list. */
- struct cpu_socket *socket; /* Socket containing the core. */
+ struct list list_node; /* In 'numa_node->cores' list. */
+ struct numa_node *numa; /* numa node containing the core. */
int core_id; /* Core id. */
bool pinned; /* If a thread has been pinned to the core. */
};
-/* Contains all 'struct cpu_socket's. */
-static struct hmap all_cpu_sockets = HMAP_INITIALIZER(&all_cpu_sockets);
+/* Contains all 'struct numa_node's. */
+static struct hmap all_numa_nodes = HMAP_INITIALIZER(&all_numa_nodes);
/* Contains all 'struct cpu_core's. */
static struct hmap all_cpu_cores = HMAP_INITIALIZER(&all_cpu_cores);
-/* True if socket and core info are correctly extracted. */
-static bool found_sockets_and_cores;
+/* True if numa node and core info are correctly extracted. */
+static bool found_numa_and_core;
/* Returns true if 'str' contains all digits. Returns false otherwise. */
static bool
return str[strspn(str, "0123456789")] == '\0';
}
-/* Discovers all cpu sockets and the corresponding cpu cores for each socket.
- * Constructs the 'struct cpu_socket' and 'struct cpu_core'. */
+/* Discovers all numa nodes and the corresponding cpu cores.
+ * Constructs the 'struct numa_node' and 'struct cpu_core'. */
static void
-discover_sockets_and_cores(void)
+discover_numa_and_core(void)
{
int n_cpus = 0;
int i;
- for (i = 0; i < MAX_CPU_SOCKETS; i++) {
+ for (i = 0; i < MAX_NUMA_NODES; i++) {
DIR *dir;
char* path;
path = xasprintf("/sys/devices/system/node/node%d", i);
dir = opendir(path);
- /* Creates 'struct cpu_socket' if the 'dir' is non-null. */
+ /* Creates 'struct numa_node' if the 'dir' is non-null. */
if (dir) {
- struct cpu_socket *s = xzalloc(sizeof *s);
+ struct numa_node *n = xzalloc(sizeof *n);
struct dirent *subdir;
- hmap_insert(&all_cpu_sockets, &s->hmap_node, hash_int(i, 0));
- list_init(&s->cores);
- s->socket_id = i;
+ hmap_insert(&all_numa_nodes, &n->hmap_node, hash_int(i, 0));
+ list_init(&n->cores);
+ n->numa_id = i;
while ((subdir = readdir(dir)) != NULL) {
if (!strncmp(subdir->d_name, "cpu", 3)
core_id = strtoul(subdir->d_name + 3, NULL, 10);
hmap_insert(&all_cpu_cores, &c->hmap_node,
hash_int(core_id, 0));
- list_insert(&s->cores, &c->list_node);
+ list_insert(&n->cores, &c->list_node);
c->core_id = core_id;
n_cpus++;
}
}
- VLOG_INFO("Discovered %"PRIuSIZE" CPU cores on CPU socket %d",
- list_size(&s->cores), s->socket_id);
+ VLOG_INFO("Discovered %"PRIuSIZE" CPU cores on NUMA node %d",
+ list_size(&n->cores), n->numa_id);
free(path);
closedir(dir);
} else {
}
}
- VLOG_INFO("Discovered %"PRIuSIZE" CPU Sockets and %d CPU cores",
- hmap_count(&all_cpu_sockets), n_cpus);
- if (hmap_count(&all_cpu_sockets) && hmap_count(&all_cpu_cores)) {
- found_sockets_and_cores = true;
+ VLOG_INFO("Discovered %"PRIuSIZE" NUMA nodes and %d CPU cores",
+ hmap_count(&all_numa_nodes), n_cpus);
+ if (hmap_count(&all_numa_nodes) && hmap_count(&all_cpu_cores)) {
+ found_numa_and_core = true;
}
}
static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
if (ovsthread_once_start(&once)) {
- discover_sockets_and_cores();
+ discover_numa_and_core();
ovsthread_once_done(&once);
}
}
bool
-ovs_numa_cpu_socket_id_is_valid(int sid)
+ovs_numa_numa_id_is_valid(int numa_id)
{
- return sid < ovs_numa_get_n_sockets();
+ return numa_id < ovs_numa_get_n_numas();
}
bool
-ovs_numa_cpu_core_id_is_valid(int cid)
+ovs_numa_core_id_is_valid(int core_id)
{
- return cid < ovs_numa_get_n_cores();
+ return core_id < ovs_numa_get_n_cores();
}
-/* Returns the number of cpu sockets. */
+/* Returns the number of numa nodes. */
int
-ovs_numa_get_n_sockets(void)
+ovs_numa_get_n_numas(void)
{
- return found_sockets_and_cores ? hmap_count(&all_cpu_sockets)
- : OVS_SOCKET_UNSPEC;
+ return found_numa_and_core ? hmap_count(&all_numa_nodes)
+ : OVS_NUMA_UNSPEC;
}
/* Returns the number of cpu cores. */
int
ovs_numa_get_n_cores(void)
{
- return found_sockets_and_cores ? hmap_count(&all_cpu_cores)
- : OVS_CORE_UNSPEC;
+ return found_numa_and_core ? hmap_count(&all_cpu_cores)
+ : OVS_CORE_UNSPEC;
}
-/* Returns the number of cpu cores on socket. */
+/* Returns the number of cpu cores on numa node. */
int
-ovs_numa_get_n_cores_on_socket(int socket_id)
+ovs_numa_get_n_cores_on_numa(int numa_id)
{
- if (found_sockets_and_cores) {
- struct cpu_socket *socket;
+ if (found_numa_and_core) {
+ struct numa_node *numa;
- ovs_assert(ovs_numa_cpu_socket_id_is_valid(socket_id));
- socket = CONTAINER_OF(hmap_first_with_hash(&all_cpu_sockets,
- hash_int(socket_id, 0)),
- struct cpu_socket, hmap_node);
+ ovs_assert(ovs_numa_numa_id_is_valid(numa_id));
+ numa = CONTAINER_OF(hmap_first_with_hash(&all_numa_nodes,
+ hash_int(numa_id, 0)),
+ struct numa_node, hmap_node);
- return list_size(&socket->cores);
+ return list_size(&numa->cores);
}
return OVS_CORE_UNSPEC;
}
-/* Returns the number of unpinned cpu cores on socket. */
+/* Returns the number of unpinned cpu cores on numa node. */
int
-ovs_numa_get_n_unpinned_cores_on_socket(int socket_id)
+ovs_numa_get_n_unpinned_cores_on_numa(int numa_id)
{
- if (found_sockets_and_cores) {
- struct cpu_socket *socket;
+ if (found_numa_and_core) {
+ struct numa_node *numa;
struct cpu_core *core;
int count = 0;
- ovs_assert(ovs_numa_cpu_socket_id_is_valid(socket_id));
- socket = CONTAINER_OF(hmap_first_with_hash(&all_cpu_sockets,
- hash_int(socket_id, 0)),
- struct cpu_socket, hmap_node);
- LIST_FOR_EACH(core, list_node, &socket->cores) {
+ ovs_assert(ovs_numa_numa_id_is_valid(numa_id));
+ numa = CONTAINER_OF(hmap_first_with_hash(&all_numa_nodes,
+ hash_int(numa_id, 0)),
+ struct numa_node, hmap_node);
+ LIST_FOR_EACH(core, list_node, &numa->cores) {
if (!core->pinned) {
count++;
}
{
struct cpu_core *core;
- ovs_assert(ovs_numa_cpu_core_id_is_valid(core_id));
+ ovs_assert(ovs_numa_core_id_is_valid(core_id));
core = CONTAINER_OF(hmap_first_with_hash(&all_cpu_cores,
hash_int(core_id, 0)),
return OVS_CORE_UNSPEC;
}
-/* Searches through all cores on socket with 'socket_id' for an unpinned core.
- * Returns the core_id if found and sets the 'core->pinned' to true.
+/* Searches through all cores on numa node with 'numa_id' for an unpinned
+ * core. Returns the core_id if found and sets the 'core->pinned' to true.
* Otherwise, returns -1. */
int
-ovs_numa_get_unpinned_core_on_socket(int socket_id)
+ovs_numa_get_unpinned_core_on_numa(int numa_id)
{
- struct cpu_socket *socket;
+ struct numa_node *numa;
struct cpu_core *core;
- ovs_assert(ovs_numa_cpu_socket_id_is_valid(socket_id));
+ ovs_assert(ovs_numa_numa_id_is_valid(numa_id));
- socket = CONTAINER_OF(hmap_first_with_hash(&all_cpu_sockets,
- hash_int(socket_id, 0)),
- struct cpu_socket, hmap_node);
- LIST_FOR_EACH(core, list_node, &socket->cores) {
+ numa = CONTAINER_OF(hmap_first_with_hash(&all_numa_nodes,
+ hash_int(numa_id, 0)),
+ struct numa_node, hmap_node);
+ LIST_FOR_EACH(core, list_node, &numa->cores) {
if (!core->pinned) {
core->pinned = true;
return core->core_id;
{
struct cpu_core *core;
- ovs_assert(ovs_numa_cpu_core_id_is_valid(core_id));
+ ovs_assert(ovs_numa_core_id_is_valid(core_id));
core = CONTAINER_OF(hmap_first_with_hash(&all_cpu_cores,
hash_int(core_id, 0)),
projects / cascardo / ovs.git / blobdiff