Hridya Valsaraju
f6b97b46d1
This patch sets CONFIG_DMABUF_HEAPS_SYSTEM to tristate and exports the symbol dma_heap_get_dev() to allow the DMA-BUF system heap to be a module. This change is intended to allow partners to continue using device/SoC-specific optimizations in their system heap implementations when they switch from ION to DMA-BUF heaps. The ION system heap was built-in and partners were asked to override the system heap ID with their own if they wanted to override the GKI system heap. This per-vendor approach to override system heap will no longer be possible with DMA-BUF heaps since Android S aims to restrict framework access to DMA-BUF vendor heaps by only letting it access ABI-defined vendor heaps. VTS tests will be created to ensure that the system heap is present at /dev/dma_heap/system and behaves as expected of the system heap. Bug: 175697666 Bug: 155218010 Bug: 172527615 Change-Id: Iabb24d9aedde308a9b15509781dd0e6b67353e99 Signed-off-by: Hridya Valsaraju <hridya@google.com> (cherry picked from commit c975699b4953ea3251695c16ef65ecb722c91188) Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
15 lines
501 B
Plaintext
15 lines
501 B
Plaintext
config DMABUF_HEAPS_SYSTEM
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tristate "DMA-BUF System Heap"
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depends on DMABUF_HEAPS
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help
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Choose this option to enable the system dmabuf heap. The system heap
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is backed by pages from the buddy allocator. If in doubt, say Y.
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config DMABUF_HEAPS_CMA
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tristate "DMA-BUF CMA Heap"
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depends on DMABUF_HEAPS && DMA_CMA
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help
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Choose this option to enable dma-buf CMA heap. This heap is backed
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by the Contiguous Memory Allocator (CMA). If your system has these
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regions, you should say Y here.
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