Add option to pass bound BOs to exec

Signed-off-by: Lukasz Jobczyk <[email protected]>

Author: LukaszJobczyk

opencl/test/unit_test/test_files/igdrcl.config

@@ -91,6 +91,7 @@ DirectSubmissionDisableCacheFlush = -1
 DirectSubmissionDisableMonitorFence = 0
 USMEvictAfterMigration = 1
 UseVmBind = 0
+PassBoundBOToExec = -1
 EnableNullHardware = 0
 ForceLinearImages = 0
 ForceSLML3Config = 0

shared/source/debug_settings/debug_variables_base.inl

@@ -223,6 +223,7 @@ DECLARE_DEBUG_VARIABLE(int64_t, ForceSystemMemoryPlacement, 0, "0: default,  >0:
 DECLARE_DEBUG_VARIABLE(int64_t, ForceNonSystemMemoryPlacement, 0, "0: default,  >0: (bitmask) for given Graphics Allocation Type, force non-system memory placement")
 DECLARE_DEBUG_VARIABLE(int64_t, DisableIndirectAccess, -1, "0: default,  0: Indirect access for L0 kernels is enabled, 1: Read IGC experimental properties to determine whether indirect access is required")
 DECLARE_DEBUG_VARIABLE(int32_t, UseVmBind, 0, "Use new residency model on Linux (requires kernel support), -1: default, 0: disabled, 1: enabled")
+DECLARE_DEBUG_VARIABLE(int32_t, PassBoundBOToExec, -1, "Pass bound BOs to exec call to keep dependencies")
 DECLARE_DEBUG_VARIABLE(bool, UseMaxSimdSizeToDeduceMaxWorkgroupSize, false, "With this flag on, max workgroup size is deduced using SIMD32 instead of SIMD8, this causes the max wkg size to be 4 times bigger")
 DECLARE_DEBUG_VARIABLE(bool, ReturnRawGpuTimestamps, false, "Driver returns raw GPU tiemstamps instead of calculated ones.")
 DECLARE_DEBUG_VARIABLE(bool, ForcePerDssBackedBufferProgramming, false, "Always program per-DSS memory backed buffer in preamble")

shared/source/os_interface/linux/drm_memory_operations_handler_bind.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2020 Intel Corporation
+ * Copyright (C) 2020-2021 Intel Corporation
  *
  * SPDX-License-Identifier: MIT
  *
@@ -93,7 +93,16 @@ MemoryOperationsStatus DrmMemoryOperationsHandlerBind::isResident(Device *device
 
 void DrmMemoryOperationsHandlerBind::mergeWithResidencyContainer(OsContext *osContext, ResidencyContainer &residencyContainer) {
     this->makeResidentWithinOsContext(osContext, ArrayRef<GraphicsAllocation *>(residencyContainer), true);
-    residencyContainer.clear();
+
+    auto clearContainer = true;
+
+    if (DebugManager.flags.PassBoundBOToExec.get() != -1) {
+        clearContainer = !DebugManager.flags.PassBoundBOToExec.get();
+    }
+
+    if (clearContainer) {
+        residencyContainer.clear();
+    }
 }
 
 std::unique_lock<std::mutex> DrmMemoryOperationsHandlerBind::lockHandlerIfUsed() {