i915/selftests/lib_sw_fence.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * lib_sw_fence.h - library routines for testing N:M synchronisation points
0004  *
0005  * Copyright (C) 2017 Intel Corporation
0006  */
0007
0008 #ifndef _LIB_SW_FENCE_H_
0009 #define _LIB_SW_FENCE_H_
0010
0011 #include <linux/timer.h>
0012
0013 #include "../i915_sw_fence.h"
0014
0015 #ifdef CONFIG_LOCKDEP
0016 #define onstack_fence_init(fence)               \
0017 do {                                \
0018     static struct lock_class_key __key;         \
0019                                 \
0020     __onstack_fence_init((fence), #fence, &__key);  \
0021 } while (0)
0022 #else
0023 #define onstack_fence_init(fence)               \
0024     __onstack_fence_init((fence), NULL, NULL)
0025 #endif
0026
0027 void __onstack_fence_init(struct i915_sw_fence *fence,
0028               const char *name,
0029               struct lock_class_key *key);
0030 void onstack_fence_fini(struct i915_sw_fence *fence);
0031
0032 struct timed_fence {
0033     struct i915_sw_fence fence;
0034     struct timer_list timer;
0035 };
0036
0037 void timed_fence_init(struct timed_fence *tf, unsigned long expires);
0038 void timed_fence_fini(struct timed_fence *tf);
0039
0040 struct i915_sw_fence *heap_fence_create(gfp_t gfp);
0041 void heap_fence_put(struct i915_sw_fence *fence);
0042
0043 #endif /* _LIB_SW_FENCE_H_ */