Add XBZRLE statistics

Signed-off-by: Benoit Hudzia <benoit.hudzia@sap.com>
Signed-off-by: Petter Svard <petters@cs.umu.se>
Signed-off-by: Aidan Shribman <aidan.shribman@sap.com>
Signed-off-by: Orit Wasserman <owasserm@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
diff --git a/hmp.c b/hmp.c
index 3347727..c13386b 100644
--- a/hmp.c
+++ b/hmp.c
@@ -177,6 +177,19 @@
                        info->disk->total >> 10);
     }
 
+    if (info->has_xbzrle_cache) {
+        monitor_printf(mon, "cache size: %" PRIu64 " bytes\n",
+                       info->xbzrle_cache->cache_size);
+        monitor_printf(mon, "xbzrle transferred: %" PRIu64 " kbytes\n",
+                       info->xbzrle_cache->bytes >> 10);
+        monitor_printf(mon, "xbzrle pages: %" PRIu64 " pages\n",
+                       info->xbzrle_cache->pages);
+        monitor_printf(mon, "xbzrle cache miss: %" PRIu64 "\n",
+                       info->xbzrle_cache->cache_miss);
+        monitor_printf(mon, "xbzrle overflow : %" PRIu64 "\n",
+                       info->xbzrle_cache->overflow);
+    }
+
     qapi_free_MigrationInfo(info);
     qapi_free_MigrationCapabilityStatusList(caps);
 }