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Align command buffers to 64KB

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Change-Id: Id1fbd7c6f1aee48c4b69ec305d5332cb0aa86507
Signed-off-by: Jobczyk, Lukasz <lukasz.jobczyk@intel.com>
This commit is contained in:
Jobczyk, Lukasz
2019-02-14 12:56:03 +01:00
committed by sys_ocldev
parent af2dc200c5
commit 2bcecf3e62
6 changed files with 23 additions and 24 deletions
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13
runtime/command_stream/command_stream_receiver.cpp
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@@ -125,16 +125,15 @@ LinearStream &CommandStreamReceiver::getCS(size_t minRequiredSize) {
if (commandStream.getAvailableSpace() < minRequiredSize) {
// Make sure we have enough room for a MI_BATCH_BUFFER_END and any padding.
// Currently reserving 64bytes (cacheline) which should be more than enough.
static const size_t sizeForSubmission = MemoryConstants::cacheLineSize;
minRequiredSize += sizeForSubmission;
minRequiredSize += MemoryConstants::cacheLineSize;
minRequiredSize += CSRequirements::csOverfetchSize;
// If not, allocate a new block. allocate full pages
minRequiredSize = alignUp(minRequiredSize, MemoryConstants::pageSize);
minRequiredSize = alignUp(minRequiredSize, MemoryConstants::pageSize64k);
auto requiredSize = minRequiredSize + CSRequirements::csOverfetchSize;
auto allocationType = GraphicsAllocation::AllocationType::LINEAR_STREAM;
auto allocation = internalAllocationStorage->obtainReusableAllocation(requiredSize, allocationType).release();
auto allocation = internalAllocationStorage->obtainReusableAllocation(minRequiredSize, allocationType).release();
if (!allocation) {
allocation = getMemoryManager()->allocateGraphicsMemoryWithProperties({requiredSize, allocationType});
allocation = getMemoryManager()->allocateGraphicsMemoryWithProperties({minRequiredSize, allocationType});
}
//pass current allocation to reusable list
@@ -142,7 +141,7 @@ LinearStream &CommandStreamReceiver::getCS(size_t minRequiredSize) {
internalAllocationStorage->storeAllocation(std::unique_ptr<GraphicsAllocation>(commandStream.getGraphicsAllocation()), REUSABLE_ALLOCATION);
}
commandStream.replaceBuffer(allocation->getUnderlyingBuffer(), minRequiredSize - sizeForSubmission);
commandStream.replaceBuffer(allocation->getUnderlyingBuffer(), minRequiredSize - MemoryConstants::cacheLineSize - CSRequirements::csOverfetchSize);
commandStream.replaceGraphicsAllocation(allocation);
}