menu "DMABUF options"
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config DMABUF_CACHE
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bool "DMABUF cache attachment"
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default ARCH_ROCKCHIP
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help
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This option support to store attachments in a list and destroy them by
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set to a callback list in the dtor of dma-buf.
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config SYNC_FILE
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bool "Explicit Synchronization Framework"
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default n
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select DMA_SHARED_BUFFER
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---help---
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The Sync File Framework adds explicit syncronization via
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userspace. It enables send/receive 'struct dma_fence' objects to/from
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userspace via Sync File fds for synchronization between drivers via
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userspace components. It has been ported from Android.
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The first and main user for this is graphics in which a fence is
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associated with a buffer. When a job is submitted to the GPU a fence
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is attached to the buffer and is transferred via userspace, using Sync
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Files fds, to the DRM driver for example. More details at
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Documentation/sync_file.txt.
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config SW_SYNC
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bool "Sync File Validation Framework"
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default n
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depends on SYNC_FILE
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---help---
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A sync object driver that uses a 32bit counter to coordinate
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synchronization. Useful when there is no hardware primitive backing
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the synchronization.
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WARNING: improper use of this can result in deadlocking kernel
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drivers from userspace. Intended for test and debug only.
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menuconfig DMABUF_HEAPS
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bool "DMA-BUF Userland Memory Heaps"
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select DMA_SHARED_BUFFER
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help
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Choose this option to enable the DMA-BUF userland memory heaps.
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This options creates per heap chardevs in /dev/dma_heap/ which
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allows userspace to allocate dma-bufs that can be shared
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between drivers.
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config DMABUF_PAGE_POOL
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bool "DMA-BUF page-pool library"
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depends on !DMABUF_HEAPS
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help
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Choose this option to enable the DMA-BUF page-pool library.
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source "drivers/dma-buf/heaps/Kconfig"
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endmenu
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