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# (C) COPYRIGHT 2012-2013 ARM Limited. All rights reserved.
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# Foundation, and any use by you of this program is subject to the terms
# of such GNU licence.
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=====================
dma-buf-test-exporter
=====================

Overview
--------

The dma-buf-test-exporter is a simple exporter of dma_buf objects.
It has a private API to allocate and manipulate the buffers which are represented as dma_buf fds.
The private API allows:
* simple allocation of physically non-contiguous buffers
* simple allocation of physically contiguous buffers
* query kernel side API usage stats (number of attachments, number of mappings, mmaps)
* failure mode configuration (fail attach, mapping, mmap)
* kernel side memset of buffers

The buffers support all of the dma_buf API, including mmap.

It supports being compiled as a module both in-tree and out-of-tree.

See include/linux/dma-buf-test-exporter.h for the ioctl interface.
See Documentation/dma-buf-sharing.txt for details on dma_buf.