Add qmp command query-numa to show guest NUMA information.
Signed-off-by: Wanlong Gao <gaowanl...@cn.fujitsu.com>
---
numa.c | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
qapi-schema.json | 36 +++++++++++++++++++++++++++++
qmp-commands.hx | 49 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 154 insertions(+)
diff --git a/numa.c b/numa.c
index c260d73..f9ba01d 100644
--- a/numa.c
+++ b/numa.c
@@ -373,3 +373,72 @@ error:
numa_info[nodeid].relative = old_relative;
return;
}
+
+NUMAInfoList *qmp_query_numa(Error **errp)
+{
+ NUMAInfoList *head = NULL, *cur_item = NULL;
+ CPUState *cpu;
+ int i;
+
+ for (i = 0; i < nb_numa_nodes; i++) {
+ NUMAInfoList *info;
+ uint16List *cur_cpu_item = NULL;
+ info = g_malloc0(sizeof(*info));
+ info->value = g_malloc0(sizeof(*info->value));
+ info->value->nodeid = i;
+ for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) {
+ if (cpu->numa_node == i) {
+ uint16List *node_cpu = g_malloc0(sizeof(*node_cpu));
+ node_cpu->value = cpu->cpu_index;
+
+ if (!cur_cpu_item) {
+ info->value->cpus = cur_cpu_item = node_cpu;
+ } else {
+ cur_cpu_item->next = node_cpu;
+ cur_cpu_item = node_cpu;
+ }
+ }
+ }
+ info->value->memory = numa_info[i].node_mem;
+
+#ifdef CONFIG_NUMA
+ info->value->policy = numa_info[i].policy;
+ info->value->relative = numa_info[i].relative;
+
+ unsigned long first, next;
+ next = first = find_first_bit(numa_info[i].host_mem, MAX_CPUMASK_BITS);
+ if (first == MAX_CPUMASK_BITS) {
+ goto end;
+ }
+ uint16List *cur_node_item = g_malloc0(sizeof(*cur_node_item));
+ cur_node_item->value = first;
+ info->value->host_nodes = cur_node_item;
+ do {
+ if (next == numa_max_node()) {
+ break;
+ }
+
+ next = find_next_bit(numa_info[i].host_mem, MAX_CPUMASK_BITS,
+ next + 1);
+ if (next > numa_max_node() || next == MAX_CPUMASK_BITS) {
+ break;
+ }
+
+ uint16List *host_node = g_malloc0(sizeof(*host_node));
+ host_node->value = next;
+ cur_node_item->next = host_node;
+ cur_node_item = host_node;
+ } while (true);
+end:
+#endif
+
+ if (!cur_item) {
+ head = cur_item = info;
+ } else {
+ cur_item->next = info;
+ cur_item = info;
+ }
+ }
+
+ return head;
+}
diff --git a/qapi-schema.json b/qapi-schema.json
index a1e0d36..b80669c 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -3868,3 +3868,39 @@
{ 'command': 'set-mem-policy',
'data': {'nodeid': 'uint16', '*policy': 'NumaNodePolicy',
'*relative': 'bool', '*host-nodes': ['uint16'] } }
+
+##
+# @NUMAInfo:
+#
+# Information about guest NUMA nodes
+#
+# @nodeid: NUMA node ID
+#
+# @cpus: VCPUs contained in this node
+#
+# @memory: memory size of this node
+#
+# @policy: memory policy of this node
+#
+# @relative: if host nodes are relative for memory policy
+#
+# @host-nodes: host nodes for its memory policy
+#
+# Since: 1.7
+#
+##
+{ 'type': 'NUMAInfo',
+ 'data': {'nodeid': 'uint16', 'cpus': ['uint16'], 'memory': 'uint64',
+ 'policy': 'NumaNodePolicy', 'relative': 'bool',
+ 'host-nodes': ['uint16'] }}
+
+##
+# @query-numa:
+#
+# Returns a list of information about each guest node.
+#
+# Returns: a list of @NUMAInfo for each guest node
+#
+# Since: 1.7
+##
+{ 'command': 'query-numa', 'returns': ['NUMAInfo'] }
diff --git a/qmp-commands.hx b/qmp-commands.hx
index c8356c5..a5a69ae 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -3155,3 +3155,52 @@ Notes:
to all available host nodes.
EQMP
+
+ {
+ .name = "query-numa",
+ .args_type = "",
+ .mhandler.cmd_new = qmp_marshal_input_query_numa,
+ },
+
+SQMP
+query-numa
+---------
+
+Show NUMA information.
+
+Return a json-array. Each NUMA node is represented by a json-object,
+which contains:
+
+- "nodeid": NUMA node ID (json-int)
+- "cpus": a json-arry of contained VCPUs
+- "memory": amount of memory in each node in Byte (json-int)
+- "policy": memory policy of this node (json-string)
+- "relative": if host nodes is relative for its memory policy (json-bool)
+- "host-nodes": a json-array of host nodes for its memory policy
+
+Arguments:
+
+Example:
+
+-> { "excute": "query-numa" }
+<- { "return":[
+ {
+ "nodeid": 0,
+ "cpus": [0, 1],
+ "memory": 536870912,
+ "policy": "membind",
+ "relative": false,
+ "host-nodes": [0, 1]
+ },
+ {
+ "nodeid": 1,
+ "cpus": [2, 3],
+ "memory": 536870912,
+ "policy": "interleave",
+ "relative": false,
+ "host-nodes": [1]
+ }
+ ]
+ }
+
+EQMP
--
1.8.4.rc0.11.g35f5eaa
