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Release 4.12 include/linux/dma-fence-array.h

Directory: include/linux
 * fence-array: aggregates fence to be waited together
 * Copyright (C) 2016 Collabora Ltd
 * Copyright (C) 2016 Advanced Micro Devices, Inc.
 * Authors:
 *      Gustavo Padovan <>
 *      Christian König <>
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.



#include <linux/dma-fence.h>

 * struct dma_fence_array_cb - callback helper for fence array
 * @cb: fence callback structure for signaling
 * @array: reference to the parent fence array object

struct dma_fence_array_cb {
struct dma_fence_cb cb;
struct dma_fence_array *array;

 * struct dma_fence_array - fence to represent an array of fences
 * @base: fence base class
 * @lock: spinlock for fence handling
 * @num_fences: number of fences in the array
 * @num_pending: fences in the array still pending
 * @fences: array of the fences

struct dma_fence_array {
struct dma_fence base;

spinlock_t lock;
unsigned num_fences;
atomic_t num_pending;
struct dma_fence **fences;

extern const struct dma_fence_ops dma_fence_array_ops;

 * dma_fence_is_array - check if a fence is from the array subsclass
 * @fence: fence to test
 * Return true if it is a dma_fence_array and false otherwise.

static inline bool dma_fence_is_array(struct dma_fence *fence) { return fence->ops == &dma_fence_array_ops; }


Gustavo Fernando Padovan1785.00%150.00%
Chris Wilson315.00%150.00%

/** * to_dma_fence_array - cast a fence to a dma_fence_array * @fence: fence to cast to a dma_fence_array * * Returns NULL if the fence is not a dma_fence_array, * or the dma_fence_array otherwise. */
static inline struct dma_fence_array * to_dma_fence_array(struct dma_fence *fence) { if (fence->ops != &dma_fence_array_ops) return NULL; return container_of(fence, struct dma_fence_array, base); }


Gustavo Fernando Padovan3286.49%150.00%
Chris Wilson513.51%150.00%

struct dma_fence_array *dma_fence_array_create(int num_fences, struct dma_fence **fences, u64 context, unsigned seqno, bool signal_on_any); bool dma_fence_match_context(struct dma_fence *fence, u64 context); #endif /* __LINUX_DMA_FENCE_ARRAY_H */

Overall Contributors

Gustavo Fernando Padovan11272.73%240.00%
Chris Wilson2717.53%120.00%
Philipp Zabel127.79%120.00%
Christian König31.95%120.00%
Directory: include/linux
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