1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * lib_sw_fence.h - library routines for testing N:M synchronisation points
 4 *
 5 * Copyright (C) 2017 Intel Corporation
 6 */
 7
 8#ifndef _LIB_SW_FENCE_H_
 9#define _LIB_SW_FENCE_H_
10
11#include <linux/timer.h>
12
13#include "../i915_sw_fence.h"
14
15#ifdef CONFIG_LOCKDEP
16#define onstack_fence_init(fence)				\
17do {								\
18	static struct lock_class_key __key;			\
19								\
20	__onstack_fence_init((fence), #fence, &__key);	\
21} while (0)
22#else
23#define onstack_fence_init(fence)				\
24	__onstack_fence_init((fence), NULL, NULL)
25#endif
26
27void __onstack_fence_init(struct i915_sw_fence *fence,
28			  const char *name,
29			  struct lock_class_key *key);
30void onstack_fence_fini(struct i915_sw_fence *fence);
31
32struct timed_fence {
33	struct i915_sw_fence fence;
34	struct timer_list timer;
35};
36
37void timed_fence_init(struct timed_fence *tf, unsigned long expires);
38void timed_fence_fini(struct timed_fence *tf);
39
40struct i915_sw_fence *heap_fence_create(gfp_t gfp);
41void heap_fence_put(struct i915_sw_fence *fence);
42
43#endif /* _LIB_SW_FENCE_H_ */