Merge pull request #2416 from nrspruit/disable_driver_inorderlists

[L0] Disabling Driver In Order Lists by default

Author: nrspruit

source/adapters/level_zero/command_buffer.cpp

@@ -598,10 +598,13 @@ ur_result_t createMainCommandList(ur_context_handle_t Context,
  */
 bool canBeInOrder(ur_context_handle_t Context,
                   const ur_exp_command_buffer_desc_t *CommandBufferDesc) {
+  const char *UrRet = std::getenv("UR_L0_USE_DRIVER_INORDER_LISTS");
   // In-order command-lists are not available in old driver version.
+  bool DriverInOrderRequested = UrRet ? std::atoi(UrRet) != 0 : false;
   bool CompatibleDriver = Context->getPlatform()->isDriverVersionNewerOrSimilar(
       1, 3, L0_DRIVER_INORDER_MIN_VERSION);
-  return CompatibleDriver
+  bool CanUseDriverInOrderLists = CompatibleDriver && DriverInOrderRequested;
+  return CanUseDriverInOrderLists
              ? (CommandBufferDesc ? CommandBufferDesc->isInOrder : false)
              : false;
 }

source/adapters/level_zero/device.cpp

@@ -1518,10 +1518,10 @@ bool ur_device_handle_t_::useDriverInOrderLists() {
 
   static const bool UseDriverInOrderLists = [&] {
     const char *UrRet = std::getenv("UR_L0_USE_DRIVER_INORDER_LISTS");
-    bool CompatibleDriver = this->Platform->isDriverVersionNewerOrSimilar(
-        1, 3, L0_DRIVER_INORDER_MIN_VERSION);
+    // bool CompatibleDriver = this->Platform->isDriverVersionNewerOrSimilar(
+    //     1, 3, L0_DRIVER_INORDER_MIN_VERSION);
     if (!UrRet)
-      return CompatibleDriver;
+      return false;
     return std::atoi(UrRet) != 0;
   }();