lstopo/draw: display the osdev-type before their name

So that "Block nvme0n1" and "Net enp0" is more clear than "nvme0n1" and "enp0".

The name may be hidden by disabling index displaying for osdevs
since names are usually "<type><number>".

Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>

utils/lstopo/lstopo-draw.c

@@ -720,10 +720,20 @@ lstopo_obj_snprintf(struct lstopo_output *loutput, char *text, size_t textlen, h
   char totmemstr[64] = "";
   int attrlen;
 
-  /* For OSDev, Misc and Group, name replaces type+index+attrs */
-  if (obj->name && (obj->type == HWLOC_OBJ_OS_DEVICE || obj->type == HWLOC_OBJ_MISC || obj->type == HWLOC_OBJ_GROUP)) {
+  /* For Misc and Group, name replaces type+index+attrs */
+  if (obj->name && (obj->type == HWLOC_OBJ_MISC || obj->type == HWLOC_OBJ_GROUP)) {
     return snprintf(text, textlen, "%s", obj->name);
   }
+  /* For OSDev, OSDev-type+name replaces type+index+attrs */
+  if (obj->type == HWLOC_OBJ_OS_DEVICE) {
+    /* consider the name as an index and remove it if LSTOPO_INDEX_TYPE_NONE */
+    if (index_type != LSTOPO_INDEX_TYPE_NONE) {
+      hwloc_obj_type_snprintf(typestr, sizeof(typestr), obj, 0);
+      return snprintf(text, textlen, "%s %s", typestr, obj->name);
+    } else {
+      return hwloc_obj_type_snprintf(text, textlen, obj, 0);
+    }
+  }
 
   /* subtype replaces the basic type name */
   if (obj->subtype) {