114 lines
4.5 KiB
C++
114 lines
4.5 KiB
C++
/*
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* Copyright (c) 2018, Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "runtime/built_ins/built_ins.h"
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#include "runtime/command_stream/preemption.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 OCLRT {
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bool PreemptionHelper::allowThreadGroupPreemption(Kernel *kernel, const WorkaroundTable *waTable) {
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if (waTable->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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waTable->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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}
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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 OCLRT
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