Use new residency model by default

Related-To: NEO-5007

Change-Id: Id39ac53e00e126237200d80e493706e2eed53b30
Signed-off-by: Lukasz Jobczyk <lukasz.jobczyk@intel.com>

Author: LukaszJobczyk

opencl/source/dll/linux/drm_neo_create.cpp

@@ -110,4 +110,11 @@ Drm *Drm::create(std::unique_ptr<HwDeviceId> hwDeviceId, RootDeviceEnvironment &
     }
     return drmObject.release();
 }
+
+void Drm::overrideBindSupport(bool &useVmBind) {
+    if (DebugManager.flags.UseVmBind.get() != -1) {
+        useVmBind = DebugManager.flags.UseVmBind.get();
+    }
+}
+
 } // namespace NEO

opencl/test/unit_test/linux/main_linux_dll.cpp

@@ -215,6 +215,23 @@ TEST(DrmTest, GivenSelectedIncorectDeviceWhenGetDeviceFdThenFail) {
     EXPECT_TRUE(hwDeviceIds.empty());
 }
 
+TEST(DrmTest, givenUseVmBindFlagWhenOverrideBindSupportThenReturnProperValue) {
+    DebugManagerStateRestore dbgRestorer;
+    bool useVmBind = false;
+
+    DebugManager.flags.UseVmBind.set(1);
+    Drm::overrideBindSupport(useVmBind);
+    EXPECT_TRUE(useVmBind);
+
+    DebugManager.flags.UseVmBind.set(0);
+    Drm::overrideBindSupport(useVmBind);
+    EXPECT_FALSE(useVmBind);
+
+    DebugManager.flags.UseVmBind.set(-1);
+    Drm::overrideBindSupport(useVmBind);
+    EXPECT_FALSE(useVmBind);
+}
+
 TEST_F(DrmTests, createReturnsDrm) {
     auto drm = DrmWrap::createDrm(*rootDeviceEnvironment);
     EXPECT_NE(drm, nullptr);

opencl/test/unit_test/os_interface/linux/drm_neo_create.cpp

@@ -40,4 +40,12 @@ Drm *Drm::create(std::unique_ptr<HwDeviceId> hwDeviceId, RootDeviceEnvironment &
     }
     return drm;
 }
+
+void Drm::overrideBindSupport(bool &useVmBind) {
+    useVmBind = false;
+    if (DebugManager.flags.UseVmBind.get() == 1) {
+        useVmBind = true;
+    }
+}
+
 } // namespace NEO

opencl/test/unit_test/test_files/igdrcl.config

@@ -86,6 +86,7 @@ DirectSubmissionDiagnosticExecutionCount = 30
 DirectSubmissionDisableCacheFlush = 0
 DirectSubmissionDisableMonitorFence = 0
 USMEvictAfterMigration = 1
+UseVmBind = -1
 EnableNullHardware = 0
 ForceLinearImages = 0
 ForceSLML3Config = 0

shared/source/debug_settings/debug_variables_base.inl

@@ -203,6 +203,7 @@ DECLARE_DEBUG_VARIABLE(int32_t, ForceUserptrAlignment, -1, "-1: no force (4kb),
 DECLARE_DEBUG_VARIABLE(int64_t, ForceSystemMemoryPlacement, 0, "0: default,  >0: (bitmask) for given Graphics Allocation Type, force system memory placement")
 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: Indirect is disabled")
+DECLARE_DEBUG_VARIABLE(int32_t, UseVmBind, -1, "Use new residency model on Linux (requires kernel support), -1: default, 0: disabled, 1: enabled")
 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_neo.h

@@ -141,6 +141,7 @@ class Drm {
     static bool isi915Version(int fd);
 
     static Drm *create(std::unique_ptr<HwDeviceId> hwDeviceId, RootDeviceEnvironment &rootDeviceEnvironment);
+    static void overrideBindSupport(bool &useVmBind);
 
   protected:
     int getQueueSliceCount(drm_i915_gem_context_param_sseu *sseu);