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DMA_BUF_EXPORT(9) Device drivers infrastructure DMA_BUF_EXPORT(9)

NAME

dma_buf_export - Creates a new dma_buf, and associates an anon file with this buffer, so it can be exported. Also connect the allocator specific data and ops to the buffer. Additionally, provide a name string for exporter; useful in debugging.

SYNOPSIS

struct dma_buf * dma_buf_export(const struct dma_buf_export_info * exp_info);

ARGUMENTS

exp_info

[in] holds all the export related information provided by the exporter. see struct dma_buf_export_info for further details.

DESCRIPTION

Returns, on success, a newly created dma_buf object, which wraps the supplied private data and operations for dma_buf_ops. On either missing ops, or error in allocating struct dma_buf, will return negative error.

For most cases the easiest way to create exp_info is through the DEFINE_DMA_BUF_EXPORT_INFO macro.

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June 2024 Kernel Hackers Manual 3.10