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Merge pull request #808 from lioncash/mem-dedup
video_core/memory_manager: Avoid repeated unnecessary page slot lookups
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commit
e013fdc2b2
@ -13,8 +13,10 @@ GPUVAddr MemoryManager::AllocateSpace(u64 size, u64 align) {
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ASSERT(gpu_addr);
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for (u64 offset = 0; offset < size; offset += PAGE_SIZE) {
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ASSERT(PageSlot(*gpu_addr + offset) == static_cast<u64>(PageStatus::Unmapped));
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PageSlot(*gpu_addr + offset) = static_cast<u64>(PageStatus::Allocated);
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VAddr& slot = PageSlot(*gpu_addr + offset);
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ASSERT(slot == static_cast<u64>(PageStatus::Unmapped));
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slot = static_cast<u64>(PageStatus::Allocated);
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}
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return *gpu_addr;
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@ -22,8 +24,10 @@ GPUVAddr MemoryManager::AllocateSpace(u64 size, u64 align) {
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GPUVAddr MemoryManager::AllocateSpace(GPUVAddr gpu_addr, u64 size, u64 align) {
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for (u64 offset = 0; offset < size; offset += PAGE_SIZE) {
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ASSERT(PageSlot(gpu_addr + offset) == static_cast<u64>(PageStatus::Unmapped));
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PageSlot(gpu_addr + offset) = static_cast<u64>(PageStatus::Allocated);
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VAddr& slot = PageSlot(gpu_addr + offset);
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ASSERT(slot == static_cast<u64>(PageStatus::Unmapped));
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slot = static_cast<u64>(PageStatus::Allocated);
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}
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return gpu_addr;
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@ -34,8 +38,10 @@ GPUVAddr MemoryManager::MapBufferEx(VAddr cpu_addr, u64 size) {
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ASSERT(gpu_addr);
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for (u64 offset = 0; offset < size; offset += PAGE_SIZE) {
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ASSERT(PageSlot(*gpu_addr + offset) == static_cast<u64>(PageStatus::Unmapped));
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PageSlot(*gpu_addr + offset) = cpu_addr + offset;
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VAddr& slot = PageSlot(*gpu_addr + offset);
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ASSERT(slot == static_cast<u64>(PageStatus::Unmapped));
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slot = cpu_addr + offset;
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}
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MappedRegion region{cpu_addr, *gpu_addr, size};
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@ -48,8 +54,10 @@ GPUVAddr MemoryManager::MapBufferEx(VAddr cpu_addr, GPUVAddr gpu_addr, u64 size)
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ASSERT((gpu_addr & PAGE_MASK) == 0);
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for (u64 offset = 0; offset < size; offset += PAGE_SIZE) {
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ASSERT(PageSlot(gpu_addr + offset) == static_cast<u64>(PageStatus::Allocated));
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PageSlot(gpu_addr + offset) = cpu_addr + offset;
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VAddr& slot = PageSlot(gpu_addr + offset);
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ASSERT(slot == static_cast<u64>(PageStatus::Allocated));
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slot = cpu_addr + offset;
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}
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MappedRegion region{cpu_addr, gpu_addr, size};
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@ -62,9 +70,11 @@ GPUVAddr MemoryManager::UnmapBuffer(GPUVAddr gpu_addr, u64 size) {
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ASSERT((gpu_addr & PAGE_MASK) == 0);
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for (u64 offset = 0; offset < size; offset += PAGE_SIZE) {
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ASSERT(PageSlot(gpu_addr + offset) != static_cast<u64>(PageStatus::Allocated) &&
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PageSlot(gpu_addr + offset) != static_cast<u64>(PageStatus::Unmapped));
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PageSlot(gpu_addr + offset) = static_cast<u64>(PageStatus::Unmapped);
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VAddr& slot = PageSlot(gpu_addr + offset);
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ASSERT(slot != static_cast<u64>(PageStatus::Allocated) &&
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slot != static_cast<u64>(PageStatus::Unmapped));
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slot = static_cast<u64>(PageStatus::Unmapped);
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}
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// Delete the region mappings that are contained within the unmapped region
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@ -128,9 +138,7 @@ VAddr& MemoryManager::PageSlot(GPUVAddr gpu_addr) {
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auto& block = page_table[(gpu_addr >> (PAGE_BITS + PAGE_TABLE_BITS)) & PAGE_TABLE_MASK];
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if (!block) {
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block = std::make_unique<PageBlock>();
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for (unsigned index = 0; index < PAGE_BLOCK_SIZE; index++) {
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(*block)[index] = static_cast<u64>(PageStatus::Unmapped);
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}
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block->fill(static_cast<VAddr>(PageStatus::Unmapped));
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}
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return (*block)[(gpu_addr >> PAGE_BITS) & PAGE_BLOCK_MASK];
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}
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