56 lines
1.8 KiB
Plaintext
56 lines
1.8 KiB
Plaintext
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menu "DMABUF options"
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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 ANON_INODES
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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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depends on DEBUG_FS
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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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config DMA_BUF_CONTAINER
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bool "dma-buf container support"
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default y
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depends on DMA_SHARED_BUFFER
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---help---
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dma-buf container is a dma-buf that can contain multiple different
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dma-buf objects. It is useful when delivering a lot of dma-buf objects
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between processes or user and kernel to reduce communication overhead.
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config DMA_BUF_CONTAINER_TEST
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bool "test driver for dma-buf container"
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default n
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depends on DMA_BUF_CONTAINER
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---help---
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Test driver for dma-buf container to verify the elements in the
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dma-buf container are the same as the given list of dma-buf objects.
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config DMABUF_TRACE
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bool "dma-buf trace support"
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default y
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depends on DMA_SHARED_BUFFER
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endmenu
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