dma-fence-unwrap.h File Reference

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Classes
struct	dma_fence_unwrap

Macros
#define	dma_fence_unwrap_for_each(fence, cursor, head)
#define	dma_fence_unwrap_merge(...)

Functions
struct dma_fence *	dma_fence_unwrap_first (struct dma_fence *head, struct dma_fence_unwrap *cursor)
struct dma_fence *	dma_fence_unwrap_next (struct dma_fence_unwrap *cursor)
struct dma_fence *	__dma_fence_unwrap_merge (unsigned int num_fences, struct dma_fence **fences, struct dma_fence_unwrap *cursors)
int	dma_fence_dedup_array (struct dma_fence **array, int num_fences)

Macro Definition Documentation

dma_fence_unwrap_for_each

#define dma_fence_unwrap_for_each	(		fence,
			cursor,
			head
	)

Value:

    for (fence = dma_fence_unwrap_first(head, cursor); fence;   \
         fence = dma_fence_unwrap_next(cursor))

dma_fence_unwrap_for_each - iterate over all fences in containers @fence: current fence @cursor: current position inside the containers @head: starting point for the iterator

Unwrap dma_fence_chain and dma_fence_array containers and deep dive into all potential fences in them. If @head is just a normal fence only that one is returned.

dma_fence_unwrap_merge

#define dma_fence_unwrap_merge

(

...

)

Value:

    ({                              \
        struct dma_fence *__f[] = { __VA_ARGS__ };      \
        struct dma_fence_unwrap __c[ARRAY_SIZE(__f)];       \
                                    \
        __dma_fence_unwrap_merge(ARRAY_SIZE(__f), __f, __c);    \
    })

dma_fence_unwrap_merge - unwrap and merge fences

All fences given as parameters are unwrapped and merged back together as flat dma_fence_array. Useful if multiple containers need to be merged together.

Implemented as a macro to allocate the necessary arrays on the stack and account the stack frame size to the caller.

Returns NULL on memory allocation failure, a dma_fence object representing all the given fences otherwise.

Function Documentation

__dma_fence_unwrap_merge()

struct dma_fence * __dma_fence_unwrap_merge	(	unsigned int	num_fences,
		struct dma_fence **	fences,
		struct dma_fence_unwrap *	cursors
	)

dma_fence_dedup_array()

int dma_fence_dedup_array	(	struct dma_fence **	array,
		int	num_fences
	)

dma_fence_unwrap_first()

struct dma_fence * dma_fence_unwrap_first	(	struct dma_fence *	head,
		struct dma_fence_unwrap *	cursor
	)

dma_fence_unwrap_next()

struct dma_fence * dma_fence_unwrap_next

(

struct dma_fence_unwrap *

cursor

)