qapi: introduce x-query-numa QMP command

This is a counterpart to the HMP "info numa" command. It is being
added with an "x-" prefix because this QMP command is intended as an
adhoc debugging tool and will thus not be modelled in QAPI as fully
structured data, nor will it have long term guaranteed stability.
The existing HMP command is rewritten to call the QMP command.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
index 84c5e0da10de1626525d69afbd8962b24ae6993c..f66b1ca986eedaa298fe2543c5ab9821fca2cbc3 100644 (file)
--- a/hmp-commands-info.hx
+++ b/hmp-commands-info.hx
@@ -325,7 +325,7 @@ ERST
         .args_type  = "",
         .params     = "",
         .help       = "show NUMA information",
-        .cmd        = hmp_info_numa,
+        .cmd_info_hrt = qmp_x_query_numa,
     },
 
 SRST

diff --git a/hw/core/machine-hmp-cmds.c b/hw/core/machine-hmp-cmds.c
index c356783ab98a41051b75e6da435a4d79bf32bb45..4e2f319aebdae7b077042c9a092a904678769e58 100644 (file)
--- a/hw/core/machine-hmp-cmds.c
+++ b/hw/core/machine-hmp-cmds.c
@@ -130,38 +130,3 @@ void hmp_info_memdev(Monitor *mon, const QDict *qdict)
     qapi_free_MemdevList(memdev_list);
     hmp_handle_error(mon, err);
 }
-
-void hmp_info_numa(Monitor *mon, const QDict *qdict)
-{
-    int i, nb_numa_nodes;
-    NumaNodeMem *node_mem;
-    CpuInfoFastList *cpu_list, *cpu;
-    MachineState *ms = MACHINE(qdev_get_machine());
-
-    nb_numa_nodes = ms->numa_state ? ms->numa_state->num_nodes : 0;
-    monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
-    if (!nb_numa_nodes) {
-        return;
-    }
-
-    cpu_list = qmp_query_cpus_fast(&error_abort);
-    node_mem = g_new0(NumaNodeMem, nb_numa_nodes);
-
-    query_numa_node_mem(node_mem, ms);
-    for (i = 0; i < nb_numa_nodes; i++) {
-        monitor_printf(mon, "node %d cpus:", i);
-        for (cpu = cpu_list; cpu; cpu = cpu->next) {
-            if (cpu->value->has_props && cpu->value->props->has_node_id &&
-                cpu->value->props->node_id == i) {
-                monitor_printf(mon, " %" PRIi64, cpu->value->cpu_index);
-            }
-        }
-        monitor_printf(mon, "\n");
-        monitor_printf(mon, "node %d size: %" PRId64 " MB\n", i,
-                       node_mem[i].node_mem >> 20);
-        monitor_printf(mon, "node %d plugged: %" PRId64 " MB\n", i,
-                       node_mem[i].node_plugged_mem >> 20);
-    }
-    qapi_free_CpuInfoFastList(cpu_list);
-    g_free(node_mem);
-}

diff --git a/hw/core/machine-qmp-cmds.c b/hw/core/machine-qmp-cmds.c
index 216fdfaf3a08f17b67f60f7594852893abc36176..4f4ab30f8c3b9c8c9b04932b6f59720882013d72 100644 (file)
--- a/hw/core/machine-qmp-cmds.c
+++ b/hw/core/machine-qmp-cmds.c
@@ -15,6 +15,7 @@
 #include "qapi/qmp/qerror.h"
 #include "qapi/qmp/qobject.h"
 #include "qapi/qobject-input-visitor.h"
+#include "qapi/type-helpers.h"
 #include "qemu/main-loop.h"
 #include "qom/qom-qobject.h"
 #include "sysemu/hostmem.h"
@@ -204,3 +205,42 @@ MemdevList *qmp_query_memdev(Error **errp)
     object_child_foreach(obj, query_memdev, &list);
     return list;
 }
+
+HumanReadableText *qmp_x_query_numa(Error **errp)
+{
+    g_autoptr(GString) buf = g_string_new("");
+    int i, nb_numa_nodes;
+    NumaNodeMem *node_mem;
+    CpuInfoFastList *cpu_list, *cpu;
+    MachineState *ms = MACHINE(qdev_get_machine());
+
+    nb_numa_nodes = ms->numa_state ? ms->numa_state->num_nodes : 0;
+    g_string_append_printf(buf, "%d nodes\n", nb_numa_nodes);
+    if (!nb_numa_nodes) {
+        goto done;
+    }
+
+    cpu_list = qmp_query_cpus_fast(&error_abort);
+    node_mem = g_new0(NumaNodeMem, nb_numa_nodes);
+
+    query_numa_node_mem(node_mem, ms);
+    for (i = 0; i < nb_numa_nodes; i++) {
+        g_string_append_printf(buf, "node %d cpus:", i);
+        for (cpu = cpu_list; cpu; cpu = cpu->next) {
+            if (cpu->value->has_props && cpu->value->props->has_node_id &&
+                cpu->value->props->node_id == i) {
+                g_string_append_printf(buf, " %" PRIi64, cpu->value->cpu_index);
+            }
+        }
+        g_string_append_printf(buf, "\n");
+        g_string_append_printf(buf, "node %d size: %" PRId64 " MB\n", i,
+                               node_mem[i].node_mem >> 20);
+        g_string_append_printf(buf, "node %d plugged: %" PRId64 " MB\n", i,
+                               node_mem[i].node_plugged_mem >> 20);
+    }
+    qapi_free_CpuInfoFastList(cpu_list);
+    g_free(node_mem);
+
+ done:
+    return human_readable_text_from_str(buf);
+}

diff --git a/qapi/machine.json b/qapi/machine.json
index 73ff4bc16808e3c57a0f7004b6801a2c26cd1cc7..3732f80a82c2abffe414e10e822e61890b93d5c9 100644 (file)
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -1412,6 +1412,18 @@
      '*threads': 'int',
      '*maxcpus': 'int' } }
 
+##
+# @x-query-numa:
+#
+# Query NUMA topology information
+#
+# Returns: topology information
+#
+# Since: 6.2
+##
+{ 'command': 'x-query-numa',
+  'returns': 'HumanReadableText' }
+
 ##
 # @x-query-profile:
 #