[SWDEV-379269] Add all gpus as default to dmon (#211)

Change-Id: Idb17e9018c39479830a4366f2002d02725d66873

Signed-off-by: adapryor <Adam.pryor@amd.com>

rdci/src/RdciDmonSubSystem.cc

@@ -181,13 +181,6 @@ void RdciDmonSubSystem::parse_cmd_opts(int argc, char** argv) {
     }
   }
 
-  if (options_.find(OPTIONS_GROUP_ID) == options_.end()) {
-    if (gpu_indexes == "") {
-      show_help();
-      throw RdcException(RDC_ST_BAD_PARAMETER, "Need to specify the GPUs or group id");
-    }
-  }
-
   // Group and GPU index cannot co-exist
   if (gpu_indexes != "" && options_.find(OPTIONS_GROUP_ID) != options_.end()) {
     show_help();
@@ -321,6 +314,12 @@ void RdciDmonSubSystem::resolve_gpu_indexes() {
     throw RdcException(res, "Failed to get all devices");
   }
 
+  // If neither group or gpu_index was specified, default to all
+  if (raw_gpu_indexes_.empty()) {
+    gpu_indexes_.assign(device_list, device_list + count);
+    return;
+  }
+
   std::vector<std::string> vec_ids = split_string(raw_gpu_indexes_, ',');
   for (uint32_t i = 0; i < vec_ids.size(); i++) {
     if (rdc_is_partition_string(vec_ids[i].c_str())) {