[L0] Enable Command Buffer usage of UR_L0_USE_DRIVER_INORDER_LISTS

Signed-off-by: Neil R. Spruit <[email protected]>

Author: nrspruit

source/adapters/level_zero/command_buffer.cpp

@@ -598,16 +598,15 @@ ur_result_t createMainCommandList(ur_context_handle_t Context,
  */
 bool canBeInOrder(ur_context_handle_t Context,
                   const ur_exp_command_buffer_desc_t *CommandBufferDesc) {
-  std::ignore = Context;
-  std::ignore = CommandBufferDesc;
+  const char *UrRet = std::getenv("UR_L0_USE_DRIVER_INORDER_LISTS");
   // In-order command-lists are not available in old driver version.
-  // bool CompatibleDriver =
-  // Context->getPlatform()->isDriverVersionNewerOrSimilar(
-  //     1, 3, L0_DRIVER_INORDER_MIN_VERSION);
-  // return CompatibleDriver
-  //            ? (CommandBufferDesc ? CommandBufferDesc->isInOrder : false)
-  //            : false;
-  return false;
+  bool DriverInOrderRequested = UrRet ? std::atoi(UrRet) != 0 : false;
+  bool CompatibleDriver = Context->getPlatform()->isDriverVersionNewerOrSimilar(
+      1, 3, L0_DRIVER_INORDER_MIN_VERSION);
+  bool CanUseDriverInOrderLists = CompatibleDriver && DriverInOrderRequested;
+  return CanUseDriverInOrderLists
+             ? (CommandBufferDesc ? CommandBufferDesc->isInOrder : false)
+             : false;
 }
 
 /**