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-rw-r--r--include/nvgpu/barrier.h61
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diff --git a/include/nvgpu/barrier.h b/include/nvgpu/barrier.h
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1/*
2 * Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20 * DEALINGS IN THE SOFTWARE.
21 */
22
23/* This file contains NVGPU_* high-level abstractions for various
24 * memor-barrier operations available in linux/kernel. Every OS
25 * should provide their own OS specific calls under this common API
26 */
27
28#ifndef NVGPU_BARRIER_H
29#define NVGPU_BARRIER_H
30
31#ifdef __KERNEL__
32#include <nvgpu/linux/barrier.h>
33#elif defined(__NVGPU_POSIX__)
34#include <nvgpu/posix/barrier.h>
35#else
36#include <nvgpu_rmos/include/barrier.h>
37#endif
38
39#define nvgpu_mb() __nvgpu_mb()
40#define nvgpu_rmb() __nvgpu_rmb()
41#define nvgpu_wmb() __nvgpu_wmb()
42
43#define nvgpu_smp_mb() __nvgpu_smp_mb()
44#define nvgpu_smp_rmb() __nvgpu_smp_rmb()
45#define nvgpu_smp_wmb() __nvgpu_smp_wmb()
46
47#define nvgpu_read_barrier_depends() __nvgpu_read_barrier_depends()
48#define nvgpu_smp_read_barrier_depends() __nvgpu_smp_read_barrier_depends()
49
50#define NV_ACCESS_ONCE(x) __NV_ACCESS_ONCE(x)
51
52/*
53 * Sometimes we want to prevent speculation.
54 */
55#ifdef __NVGPU_PREVENT_UNTRUSTED_SPECULATION
56#define nvgpu_speculation_barrier() __nvgpu_speculation_barrier()
57#else
58#define nvgpu_speculation_barrier()
59#endif
60
61#endif /* NVGPU_BARRIER_H */