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2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
/*
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* fence-array: aggregates fence to be waited together
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*
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* Copyright (C) 2016 Collabora Ltd
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* Copyright (C) 2016 Advanced Micro Devices, Inc.
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* Authors:
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* Gustavo Padovan <gustavo@padovan.org>
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* Christian König <christian.koenig@amd.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef __LINUX_FENCE_ARRAY_H
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#define __LINUX_FENCE_ARRAY_H
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#include <linux/fence.h>
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/**
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* struct fence_array_cb - callback helper for fence array
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* @cb: fence callback structure for signaling
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* @array: reference to the parent fence array object
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*/
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struct fence_array_cb {
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struct fence_cb cb;
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struct fence_array *array;
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};
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/**
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* struct fence_array - fence to represent an array of fences
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* @base: fence base class
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* @lock: spinlock for fence handling
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* @num_fences: number of fences in the array
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* @num_pending: fences in the array still pending
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* @fences: array of the fences
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*/
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struct fence_array {
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struct fence base;
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spinlock_t lock;
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unsigned num_fences;
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atomic_t num_pending;
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struct fence **fences;
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};
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extern const struct fence_ops fence_array_ops;
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/**
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* fence_is_array - check if a fence is from the array subsclass
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*
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* Return true if it is a fence_array and false otherwise.
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*/
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static inline bool fence_is_array(struct fence *fence)
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{
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return fence->ops == &fence_array_ops;
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}
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/**
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* to_fence_array - cast a fence to a fence_array
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* @fence: fence to cast to a fence_array
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*
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* Returns NULL if the fence is not a fence_array,
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* or the fence_array otherwise.
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*/
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static inline struct fence_array *to_fence_array(struct fence *fence)
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{
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if (fence->ops != &fence_array_ops)
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return NULL;
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return container_of(fence, struct fence_array, base);
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}
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struct fence_array *fence_array_create(int num_fences, struct fence **fences,
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u64 context, unsigned seqno,
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bool signal_on_any);
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#endif /* __LINUX_FENCE_ARRAY_H */
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