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- menu "DMABUF options"
- config SYNC_FILE
- bool "Explicit Synchronization Framework"
- default n
- select DMA_SHARED_BUFFER
- ---help---
- The Sync File Framework adds explicit syncronization via
- userspace. It enables send/receive 'struct dma_fence' objects to/from
- userspace via Sync File fds for synchronization between drivers via
- userspace components. It has been ported from Android.
- The first and main user for this is graphics in which a fence is
- associated with a buffer. When a job is submitted to the GPU a fence
- is attached to the buffer and is transferred via userspace, using Sync
- Files fds, to the DRM driver for example. More details at
- Documentation/sync_file.txt.
- config SW_SYNC
- bool "Sync File Validation Framework"
- default n
- depends on SYNC_FILE
- depends on DEBUG_FS
- ---help---
- A sync object driver that uses a 32bit counter to coordinate
- synchronization. Useful when there is no hardware primitive backing
- the synchronization.
- WARNING: improper use of this can result in deadlocking kernel
- drivers from userspace. Intended for test and debug only.
- endmenu
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