diff --git a/redfish-core/lib/cpudimm.hpp b/redfish-core/lib/cpudimm.hpp
index 3823089..9351f6a 100644
--- a/redfish-core/lib/cpudimm.hpp
+++ b/redfish-core/lib/cpudimm.hpp
@@ -20,6 +20,7 @@
 #include <boost/container/flat_map.hpp>
 #include <boost/format.hpp>
 #include <node.hpp>
+#include <utils/collection.hpp>
 #include <utils/json_utils.hpp>
 
 namespace redfish
@@ -29,46 +30,6 @@
     std::string,
     boost::container::flat_map<std::string, dbus::utility::DbusVariantType>>;
 
-inline void getResourceList(std::shared_ptr<AsyncResp> aResp,
-                            const std::string& subclass,
-                            const std::vector<const char*>& collectionName)
-{
-    BMCWEB_LOG_DEBUG << "Get available system cpu/mem resources.";
-    crow::connections::systemBus->async_method_call(
-        [subclass, aResp{std::move(aResp)}](
-            const boost::system::error_code ec,
-            const boost::container::flat_map<
-                std::string, boost::container::flat_map<
-                                 std::string, std::vector<std::string>>>&
-                subtree) {
-            if (ec)
-            {
-                BMCWEB_LOG_DEBUG << "DBUS response error";
-                messages::internalError(aResp->res);
-                return;
-            }
-            nlohmann::json& members = aResp->res.jsonValue["Members"];
-            members = nlohmann::json::array();
-
-            for (const auto& object : subtree)
-            {
-                auto iter = object.first.rfind("/");
-                if ((iter != std::string::npos) && (iter < object.first.size()))
-                {
-                    members.push_back(
-                        {{"@odata.id", "/redfish/v1/Systems/system/" +
-                                           subclass + "/" +
-                                           object.first.substr(iter + 1)}});
-                }
-            }
-            aResp->res.jsonValue["Members@odata.count"] = members.size();
-        },
-        "xyz.openbmc_project.ObjectMapper",
-        "/xyz/openbmc_project/object_mapper",
-        "xyz.openbmc_project.ObjectMapper", "GetSubTree",
-        "/xyz/openbmc_project/inventory", 0, collectionName);
-}
-
 inline void
     getCpuDataByInterface(const std::shared_ptr<AsyncResp>& aResp,
                           const InterfacesProperties& cpuInterfacesProperties)
@@ -1219,9 +1180,10 @@
         res.jsonValue["@odata.id"] = "/redfish/v1/Systems/system/Processors/";
         auto asyncResp = std::make_shared<AsyncResp>(res);
 
-        getResourceList(asyncResp, "Processors",
-                        {"xyz.openbmc_project.Inventory.Item.Cpu",
-                         "xyz.openbmc_project.Inventory.Item.Accelerator"});
+        collection_util::getResourceList(
+            asyncResp, "Processors",
+            {"xyz.openbmc_project.Inventory.Item.Cpu",
+             "xyz.openbmc_project.Inventory.Item.Accelerator"});
     }
 };
 
@@ -1302,8 +1264,8 @@
         res.jsonValue["@odata.id"] = "/redfish/v1/Systems/system/Memory";
         auto asyncResp = std::make_shared<AsyncResp>(res);
 
-        getResourceList(asyncResp, "Memory",
-                        {"xyz.openbmc_project.Inventory.Item.Dimm"});
+        collection_util::getResourceList(
+            asyncResp, "Memory", {"xyz.openbmc_project.Inventory.Item.Dimm"});
     }
 };