drivers/gpu/drm/i915/selftests/lib_sw_fence.h

   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)                               \
  17 do {                                                            \
  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
  27 void __onstack_fence_init(struct i915_sw_fence *fence,
  28                           const char *name,
  29                           struct lock_class_key *key);
  30 void onstack_fence_fini(struct i915_sw_fence *fence);
  31
  32 struct timed_fence {
  33         struct i915_sw_fence fence;
  34         struct timer_list timer;
  35 };
  36
  37 void timed_fence_init(struct timed_fence *tf, unsigned long expires);
  38 void timed_fence_fini(struct timed_fence *tf);
  39
  40 struct i915_sw_fence *heap_fence_create(gfp_t gfp);
  41 void heap_fence_put(struct i915_sw_fence *fence);
  42
  43 #endif /* _LIB_SW_FENCE_H_ */