Buffer Synchronization Comes To DMA-BUF
Written by Michael Larabel in Free Software on 13 June 2013 at 05:04 AM EDT. Add A Comment
In recent days, Samsung has been posting kernel patches pertaining to buffer synchronization support of the DMA-BUF buffer sharing mechanism.

The work out of Samsung provides for buffer synchronization support for the DMA-BUF buffer sharing framework that's used for providing Optimus-like support with sharing graphics buffers between different GPUs/drivers and can also be used in the ARM world for sharing buffers between different SoC drivers.

Inki Dae explains on the mailing list, "The purpose of this framework is not only to couple cache operations, and buffer access control to CPU and DMA but also to provide easy-to-use interfaces for device drivers and potentially user application (not implemented for user applications, yet). And this framework can be used for all dma devices using system memory as dma buffer, especially for most ARM based SoCs."

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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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