dma_buf_attach_ops Struct Reference

#include <dma-buf.h>

Public Attributes
bool	allow_peer2peer
void(*	invalidate_mappings )(struct dma_buf_attachment *attach)

Detailed Description

struct dma_buf_attach_ops - importer operations for an attachment

Attachment operations implemented by the importer.

Member Data Documentation

allow_peer2peer

bool dma_buf_attach_ops::allow_peer2peer

@allow_peer2peer:

If this is set to true the importer must be able to handle peer resources without struct pages.

invalidate_mappings

void(* dma_buf_attach_ops::invalidate_mappings) (struct dma_buf_attachment *attach)

@invalidate_mappings: [optional] notification that the DMA-buf is moving

If this callback is provided the framework can avoid pinning the backing store while mappings exists.

This callback is called with the lock of the reservation object associated with the dma_buf held and the mapping function must be called with this lock held as well. This makes sure that no mapping is created concurrently with an ongoing move operation.

See the kdoc for dma_buf_invalidate_mappings() for details on the required behavior.

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The documentation for this struct was generated from the following file:

• XenevaOS/BaseHdr/linux/dma-buf.h