[Qemu-devel] [PATCH v7 3/3] hmp: introduce 'info memory_size_summary' command

[Vadim Galitsyn <vadim.galitsyn@profitbricks.com>]

Add 'info memory_size_summary' command which is a sibling
of QMP command query-memory-size-summary. It provides the
following memory information in bytes:

  * base-memory - size of "base" memory specified with command line option -m.

  * plugged-memory - amount of memory that was hot-plugged.
    If target does not have CONFIG_MEM_HOTPLUG enabled, no
    value is reported.

Signed-off-by: Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com>
Signed-off-by: Mohammed Gamal <mohammed.gamal@profitbricks.com>
Signed-off-by: Eduardo Otubo <eduardo.otubo@profitbricks.com>
Signed-off-by: Vadim Galitsyn <vadim.galitsyn@profitbricks.com>
Reviewed-by: Eugene Crosser <evgenii.cherkashin@profitbricks.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Cc: qemu-devel@nongnu.org
---
 hmp.h                |  1 +
 hmp.c                | 18 ++++++++++++++++++
 hmp-commands-info.hx | 16 ++++++++++++++++
 3 files changed, 35 insertions(+)

diff --git a/hmp.h b/hmp.h
index 1ff455295e..3605003e4c 100644
--- a/hmp.h
+++ b/hmp.h
@@ -145,5 +145,6 @@ void hmp_info_dump(Monitor *mon, const QDict *qdict);
 void hmp_info_ramblock(Monitor *mon, const QDict *qdict);
 void hmp_hotpluggable_cpus(Monitor *mon, const QDict *qdict);
 void hmp_info_vm_generation_id(Monitor *mon, const QDict *qdict);
+void hmp_info_memory_size_summary(Monitor *mon, const QDict *qdict);
 
 #endif
diff --git a/hmp.c b/hmp.c
index fd80dce758..b718dab4df 100644
--- a/hmp.c
+++ b/hmp.c
@@ -2868,3 +2868,21 @@ void hmp_info_vm_generation_id(Monitor *mon, const QDict *qdict)
     hmp_handle_error(mon, &err);
     qapi_free_GuidInfo(info);
 }
+
+void hmp_info_memory_size_summary(Monitor *mon, const QDict *qdict)
+{
+    Error *err = NULL;
+    MemoryInfo *info = qmp_query_memory_size_summary(&err);
+    if (info) {
+        monitor_printf(mon, "base memory: %" PRIu64 "\n",
+                       info->base_memory);
+
+        if (info->has_plugged_memory) {
+            monitor_printf(mon, "plugged memory: %" PRIu64 "\n",
+                           info->plugged_memory);
+        }
+
+        qapi_free_MemoryInfo(info);
+    }
+    hmp_handle_error(mon, &err);
+}
diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
index d9df238a5f..04c9db81f6 100644
--- a/hmp-commands-info.hx
+++ b/hmp-commands-info.hx
@@ -849,6 +849,22 @@ ETEXI
         .cmd = hmp_info_vm_generation_id,
     },
 
+STEXI
+@item info memory_size_summary
+@findex memory_size_summary
+Display the amount of initially allocated and hot-plugged (if
+enabled) memory in bytes.
+ETEXI
+
+    {
+        .name       = "memory_size_summary",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the amount of initially allocated and "
+                      "hot-plugged (if enabled) memory in bytes.",
+        .cmd        = hmp_info_memory_size_summary,
+    },
+
 STEXI
 @end table
 ETEXI
-- 
2.13.1.394.g41dd433