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/*
* Copyright (C) 2020-2025 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/os_interface/linux/drm_memory_operations_handler_bind.h"
#include "shared/source/command_stream/command_stream_receiver.h"
#include "shared/source/command_stream/wait_status.h"
#include "shared/source/debug_settings/debug_settings_manager.h"
#include "shared/source/device/device.h"
#include "shared/source/execution_environment/execution_environment.h"
#include "shared/source/execution_environment/root_device_environment.h"
#include "shared/source/helpers/gfx_core_helper.h"
#include "shared/source/os_interface/linux/drm_allocation.h"
#include "shared/source/os_interface/linux/drm_buffer_object.h"
#include "shared/source/os_interface/linux/drm_memory_manager.h"
#include "shared/source/os_interface/os_context.h"
namespace NEO {
DrmMemoryOperationsHandlerBind::DrmMemoryOperationsHandlerBind(const RootDeviceEnvironment &rootDeviceEnvironment, uint32_t rootDeviceIndex)
: DrmMemoryOperationsHandler(rootDeviceIndex), rootDeviceEnvironment(rootDeviceEnvironment){};
DrmMemoryOperationsHandlerBind::~DrmMemoryOperationsHandlerBind() = default;
MemoryOperationsStatus DrmMemoryOperationsHandlerBind::makeResident(Device *device, ArrayRef<GraphicsAllocation *> gfxAllocations, bool isDummyExecNeeded, const bool forcePagingFence) {
auto &engines = device->getAllEngines();
MemoryOperationsStatus result = MemoryOperationsStatus::success;
for (const auto &engine : engines) {
engine.commandStreamReceiver->initializeResources(false, device->getPreemptionMode());
result = this->makeResidentWithinOsContext(engine.osContext, gfxAllocations, false, forcePagingFence, true);
if (result != MemoryOperationsStatus::success) {
break;
}
}
return result;
}
MemoryOperationsStatus DrmMemoryOperationsHandlerBind::lock(Device *device, ArrayRef<GraphicsAllocation *> gfxAllocations) {
for (auto gfxAllocation = gfxAllocations.begin(); gfxAllocation != gfxAllocations.end(); gfxAllocation++) {
(*gfxAllocation)->setLockedMemory(true);
}
return makeResident(device, gfxAllocations, false, false);
}
MemoryOperationsStatus DrmMemoryOperationsHandlerBind::makeResidentWithinOsContext(OsContext *osContext, ArrayRef<GraphicsAllocation *> gfxAllocations, bool evictable, const bool forcePagingFence, const bool acquireLock) {
auto deviceBitfield = osContext->getDeviceBitfield();
std::lock_guard<std::mutex> lock(mutex);
auto devicesDone = 0u;
for (auto drmIterator = 0u; devicesDone < deviceBitfield.count(); drmIterator++) {
if (!deviceBitfield.test(drmIterator)) {
continue;
}
devicesDone++;
for (auto gfxAllocation = gfxAllocations.begin(); gfxAllocation != gfxAllocations.end(); gfxAllocation++) {
auto drmAllocation = static_cast<DrmAllocation *>(*gfxAllocation);
auto bo = drmAllocation->storageInfo.getNumBanks() > 1 ? drmAllocation->getBOs()[drmIterator] : drmAllocation->getBO();
if (drmAllocation->storageInfo.isChunked) {
bo = drmAllocation->getBO();
}
if (!bo->getBindInfo()[bo->getOsContextId(osContext)][drmIterator]) {
bo->requireExplicitLockedMemory(drmAllocation->isLockedMemory());
bo->requireImmediateBinding(true);
int result = drmAllocation->makeBOsResident(osContext, drmIterator, nullptr, true, forcePagingFence);
if (result) {
return MemoryOperationsStatus::outOfMemory;
}
}
if (!evictable) {
drmAllocation->updateResidencyTaskCount(GraphicsAllocation::objectAlwaysResident, osContext->getContextId());
}
}
}
return MemoryOperationsStatus::success;
}
MemoryOperationsStatus DrmMemoryOperationsHandlerBind::evict(Device *device, GraphicsAllocation &gfxAllocation) {
auto &engines = device->getAllEngines();
auto retVal = MemoryOperationsStatus::success;
gfxAllocation.setLockedMemory(false);
for (const auto &engine : engines) {
retVal = this->evictWithinOsContext(engine.osContext, gfxAllocation);
if (retVal != MemoryOperationsStatus::success) {
return retVal;
}
}
return MemoryOperationsStatus::success;
}
MemoryOperationsStatus DrmMemoryOperationsHandlerBind::evictWithinOsContext(OsContext *osContext, GraphicsAllocation &gfxAllocation) {
std::lock_guard<std::mutex> lock(mutex);
int retVal = evictImpl(osContext, gfxAllocation, osContext->getDeviceBitfield());
if (retVal) {
return MemoryOperationsStatus::failed;
}
return MemoryOperationsStatus::success;
}
int DrmMemoryOperationsHandlerBind::evictImpl(OsContext *osContext, GraphicsAllocation &gfxAllocation, DeviceBitfield deviceBitfield) {
auto drmAllocation = static_cast<DrmAllocation *>(&gfxAllocation);
for (auto drmIterator = 0u; drmIterator < deviceBitfield.size(); drmIterator++) {
if (deviceBitfield.test(drmIterator)) {
int retVal = drmAllocation->makeBOsResident(osContext, drmIterator, nullptr, false, false);
if (retVal) {
return retVal;
}
auto bo = drmAllocation->storageInfo.getNumBanks() > 1 ? drmAllocation->getBOs()[drmIterator] : drmAllocation->getBO();
if (drmAllocation->storageInfo.isChunked) {
bo = drmAllocation->getBO();
}
bo->requireImmediateBinding(false);
}
}
drmAllocation->updateResidencyTaskCount(GraphicsAllocation::objectNotResident, osContext->getContextId());
return 0;
}
MemoryOperationsStatus DrmMemoryOperationsHandlerBind::isResident(Device *device, GraphicsAllocation &gfxAllocation) {
std::lock_guard<std::mutex> lock(mutex);
bool isResident = true;
auto &engines = device->getAllEngines();
for (const auto &engine : engines) {
isResident &= gfxAllocation.isAlwaysResident(engine.osContext->getContextId());
}
if (isResident) {
return MemoryOperationsStatus::success;
}
return MemoryOperationsStatus::memoryNotFound;
}
MemoryOperationsStatus DrmMemoryOperationsHandlerBind::mergeWithResidencyContainer(OsContext *osContext, ResidencyContainer &residencyContainer) {
if (debugManager.flags.MakeEachAllocationResident.get() == 2) {
auto memoryManager = static_cast<DrmMemoryManager *>(this->rootDeviceEnvironment.executionEnvironment.memoryManager.get());
auto allocLock = memoryManager->acquireAllocLock();
this->makeResidentWithinOsContext(osContext, ArrayRef<GraphicsAllocation *>(memoryManager->getSysMemAllocs()), true, false, true);
this->makeResidentWithinOsContext(osContext, ArrayRef<GraphicsAllocation *>(memoryManager->getLocalMemAllocs(this->rootDeviceIndex)), true, false, true);
}
auto retVal = this->makeResidentWithinOsContext(osContext, ArrayRef<GraphicsAllocation *>(residencyContainer), true, false, true);
if (retVal != MemoryOperationsStatus::success) {
return retVal;
}
return MemoryOperationsStatus::success;
}
std::unique_lock<std::mutex> DrmMemoryOperationsHandlerBind::lockHandlerIfUsed() {
return std::unique_lock<std::mutex>(mutex);
}
MemoryOperationsStatus DrmMemoryOperationsHandlerBind::evictUnusedAllocations(bool waitForCompletion, bool isLockNeeded) {
auto memoryManager = static_cast<DrmMemoryManager *>(this->rootDeviceEnvironment.executionEnvironment.memoryManager.get());
std::unique_lock<std::mutex> evictLock(mutex, std::defer_lock);
if (isLockNeeded) {
evictLock.lock();
}
auto allocLock = memoryManager->acquireAllocLock();
for (const auto status : {
this->evictUnusedAllocationsImpl(memoryManager->getSysMemAllocs(), waitForCompletion),
this->evictUnusedAllocationsImpl(memoryManager->getLocalMemAllocs(this->rootDeviceIndex), waitForCompletion)}) {
if (status == MemoryOperationsStatus::gpuHangDetectedDuringOperation) {
return MemoryOperationsStatus::gpuHangDetectedDuringOperation;
}
}
return MemoryOperationsStatus::success;
}
MemoryOperationsStatus DrmMemoryOperationsHandlerBind::evictUnusedAllocationsImpl(std::vector<GraphicsAllocation *> &allocationsForEviction, bool waitForCompletion) {
const auto &engines = this->rootDeviceEnvironment.executionEnvironment.memoryManager->getRegisteredEngines(this->rootDeviceIndex);
std::vector<GraphicsAllocation *> evictCandidates;
for (auto subdeviceIndex = 0u; subdeviceIndex < GfxCoreHelper::getSubDevicesCount(rootDeviceEnvironment.getHardwareInfo()); subdeviceIndex++) {
for (auto &allocation : allocationsForEviction) {
bool evict = true;
if (allocation->getRootDeviceIndex() != this->rootDeviceIndex) {
continue;
}
for (const auto &engine : engines) {
if (engine.osContext->getDeviceBitfield().test(subdeviceIndex)) {
if (allocation->isAlwaysResident(engine.osContext->getContextId())) {
evict = false;
break;
}
if (allocation->isLockedMemory()) {
evict = false;
break;
}
if (waitForCompletion && engine.commandStreamReceiver->isInitialized()) {
const auto waitStatus = engine.commandStreamReceiver->waitForCompletionWithTimeout(WaitParams{false, false, false, 0}, engine.commandStreamReceiver->peekLatestFlushedTaskCount());
if (waitStatus == WaitStatus::gpuHang) {
return MemoryOperationsStatus::gpuHangDetectedDuringOperation;
}
}
if (allocation->isUsedByOsContext(engine.osContext->getContextId()) &&
allocation->getTaskCount(engine.osContext->getContextId()) > *engine.commandStreamReceiver->getTagAddress()) {
evict = false;
break;
}
}
}
if (evict) {
evictCandidates.push_back(allocation);
}
}
for (auto &allocationToEvict : evictCandidates) {
for (const auto &engine : engines) {
if (engine.osContext->getDeviceBitfield().test(subdeviceIndex)) {
DeviceBitfield deviceBitfield;
deviceBitfield.set(subdeviceIndex);
this->evictImpl(engine.osContext, *allocationToEvict, deviceBitfield);
}
}
}
evictCandidates.clear();
}
return MemoryOperationsStatus::success;
}
} // namespace NEO
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