01357a5a45
Move the code from the inline functions into exported functions. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20220518135844.3338-3-christian.koenig@amd.com
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* dma-fence-util: misc functions for dma_fence objects
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*
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* Copyright (C) 2022 Advanced Micro Devices, Inc.
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* Authors:
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* Christian König <christian.koenig@amd.com>
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*/
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#include <linux/dma-fence.h>
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#include <linux/dma-fence-array.h>
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#include <linux/dma-fence-chain.h>
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#include <linux/dma-fence-unwrap.h>
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/* Internal helper to start new array iteration, don't use directly */
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static struct dma_fence *
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__dma_fence_unwrap_array(struct dma_fence_unwrap *cursor)
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{
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cursor->array = dma_fence_chain_contained(cursor->chain);
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cursor->index = 0;
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return dma_fence_array_first(cursor->array);
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}
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/**
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* dma_fence_unwrap_first - return the first fence from fence containers
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* @head: the entrypoint into the containers
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* @cursor: current position inside the containers
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*
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* Unwraps potential dma_fence_chain/dma_fence_array containers and return the
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* first fence.
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*/
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struct dma_fence *dma_fence_unwrap_first(struct dma_fence *head,
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struct dma_fence_unwrap *cursor)
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{
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cursor->chain = dma_fence_get(head);
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return __dma_fence_unwrap_array(cursor);
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}
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EXPORT_SYMBOL_GPL(dma_fence_unwrap_first);
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/**
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* dma_fence_unwrap_next - return the next fence from a fence containers
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* @cursor: current position inside the containers
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*
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* Continue unwrapping the dma_fence_chain/dma_fence_array containers and return
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* the next fence from them.
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*/
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struct dma_fence *dma_fence_unwrap_next(struct dma_fence_unwrap *cursor)
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{
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struct dma_fence *tmp;
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++cursor->index;
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tmp = dma_fence_array_next(cursor->array, cursor->index);
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if (tmp)
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return tmp;
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cursor->chain = dma_fence_chain_walk(cursor->chain);
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return __dma_fence_unwrap_array(cursor);
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}
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EXPORT_SYMBOL_GPL(dma_fence_unwrap_next);
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