101 lines
3.8 KiB
C++
101 lines
3.8 KiB
C++
/*
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* Copyright (C) 2018-2019 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#include "runtime/command_stream/preemption.h"
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#include "runtime/built_ins/built_ins.h"
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#include "runtime/device/device.h"
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#include "runtime/helpers/dispatch_info.h"
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#include "runtime/helpers/string.h"
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#include "runtime/kernel/kernel.h"
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namespace NEO {
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bool PreemptionHelper::allowThreadGroupPreemption(Kernel *kernel, const WorkaroundTable *workaroundTable) {
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if (workaroundTable->waDisablePerCtxtPreemptionGranularityControl) {
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return false;
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}
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if (kernel) {
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if (kernel->getKernelInfo().patchInfo.executionEnvironment &&
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kernel->getKernelInfo().patchInfo.executionEnvironment->UsesFencesForReadWriteImages &&
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workaroundTable->waDisableLSQCROPERFforOCL) {
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return false;
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}
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if (kernel->isSchedulerKernel || kernel->isVmeKernel()) {
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return false;
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}
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}
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return true;
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}
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bool PreemptionHelper::allowMidThreadPreemption(Kernel *kernel, Device &device) {
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bool allowedByKernel = true;
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if (kernel) {
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allowedByKernel = (kernel->getKernelInfo().patchInfo.executionEnvironment->DisableMidThreadPreemption == 0) &&
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!(kernel->isVmeKernel() && !device.getDeviceInfo().vmeAvcSupportsPreemption);
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}
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bool supportedByDevice = (device.getPreemptionMode() >= PreemptionMode::MidThread);
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return supportedByDevice && allowedByKernel;
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}
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PreemptionMode PreemptionHelper::taskPreemptionMode(Device &device, Kernel *kernel) {
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if (device.getPreemptionMode() == PreemptionMode::Disabled) {
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return PreemptionMode::Disabled;
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}
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if (device.getPreemptionMode() >= PreemptionMode::MidThread &&
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allowMidThreadPreemption(kernel, device)) {
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return PreemptionMode::MidThread;
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}
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if (device.getPreemptionMode() >= PreemptionMode::ThreadGroup &&
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allowThreadGroupPreemption(kernel, device.getWaTable())) {
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return PreemptionMode::ThreadGroup;
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}
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return PreemptionMode::MidBatch;
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};
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PreemptionMode PreemptionHelper::taskPreemptionMode(Device &device, const MultiDispatchInfo &multiDispatchInfo) {
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PreemptionMode devMode = device.getPreemptionMode();
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for (const auto &di : multiDispatchInfo) {
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PreemptionMode taskMode = taskPreemptionMode(device, di.getKernel());
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if (devMode > taskMode) {
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devMode = taskMode;
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}
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printDebugString(DebugManager.flags.PrintDebugMessages.get(), stdout, "devMode = %d, taskMode = %d.\n",
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static_cast<int>(device.getPreemptionMode()), static_cast<int>(taskMode));
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}
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return devMode;
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}
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void PreemptionHelper::adjustDefaultPreemptionMode(RuntimeCapabilityTable &deviceCapabilities, bool allowMidThread, bool allowThreadGroup, bool allowMidBatch) {
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if (deviceCapabilities.defaultPreemptionMode >= PreemptionMode::MidThread &&
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allowMidThread) {
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deviceCapabilities.defaultPreemptionMode = PreemptionMode::MidThread;
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} else if (deviceCapabilities.defaultPreemptionMode >= PreemptionMode::ThreadGroup &&
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allowThreadGroup) {
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deviceCapabilities.defaultPreemptionMode = PreemptionMode::ThreadGroup;
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} else if (deviceCapabilities.defaultPreemptionMode >= PreemptionMode::MidBatch &&
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allowMidBatch) {
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deviceCapabilities.defaultPreemptionMode = PreemptionMode::MidBatch;
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} else {
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deviceCapabilities.defaultPreemptionMode = PreemptionMode::Disabled;
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}
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}
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PreemptionMode PreemptionHelper::getDefaultPreemptionMode(const HardwareInfo &hwInfo) {
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return DebugManager.flags.ForcePreemptionMode.get() == -1
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? hwInfo.capabilityTable.defaultPreemptionMode
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: static_cast<PreemptionMode>(DebugManager.flags.ForcePreemptionMode.get());
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}
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} // namespace NEO
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