DMA-BUF Cross-Device Synchronization Hits Linux 3.17
The work that was ongoing for months to provide DMA-BUF cross-device synchronization and fencing is finally landing with the Linux 3.17 kernel.
The patches by Maarten Lankhorst for DMA-BUF cross-device synchronization were up to eighteen revisions and are now finally in a condition to be merged with Linux 3.17 via the driver core subsystem pull. DMA-BUF has now proper fence and poll support along with other new functionality that affects many different kernel drivers. For Phoronix readers, one of the benefits of DMA-BUF cross-device synchronization is to reduce tearing when sharing buffers between multiple GPU DRM drivers.
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