qapi: Convert query-balloon

Please, note that some of the code supporting memory statistics is
still around (eg. virtio_balloon_receive_stats() and reset_stats()).

Also, the qmp_query_balloon() function is synchronous and thus doesn't
make any use of the (not fully working) monitor's asynchronous command
support (the old non-qapi implementation did).

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/hmp.c b/hmp.c
index aae13c093b..e0b40b16e5 100644
--- a/hmp.c
+++ b/hmp.c
@@ -349,6 +349,45 @@ out:
     qapi_free_SpiceInfo(info);
 }
 
+void hmp_info_balloon(Monitor *mon)
+{
+    BalloonInfo *info;
+    Error *err = NULL;
+
+    info = qmp_query_balloon(&err);
+    if (err) {
+        monitor_printf(mon, "%s\n", error_get_pretty(err));
+        error_free(err);
+        return;
+    }
+
+    monitor_printf(mon, "balloon: actual=%" PRId64, info->actual >> 20);
+    if (info->has_mem_swapped_in) {
+        monitor_printf(mon, " mem_swapped_in=%" PRId64, info->mem_swapped_in);
+    }
+    if (info->has_mem_swapped_out) {
+        monitor_printf(mon, " mem_swapped_out=%" PRId64, info->mem_swapped_out);
+    }
+    if (info->has_major_page_faults) {
+        monitor_printf(mon, " major_page_faults=%" PRId64,
+                       info->major_page_faults);
+    }
+    if (info->has_minor_page_faults) {
+        monitor_printf(mon, " minor_page_faults=%" PRId64,
+                       info->minor_page_faults);
+    }
+    if (info->has_free_mem) {
+        monitor_printf(mon, " free_mem=%" PRId64, info->free_mem);
+    }
+    if (info->has_total_mem) {
+        monitor_printf(mon, " total_mem=%" PRId64, info->total_mem);
+    }
+
+    monitor_printf(mon, "\n");
+
+    qapi_free_BalloonInfo(info);
+}
+
 void hmp_quit(Monitor *mon, const QDict *qdict)
 {
     monitor_suspend(mon);