drivers/gpu/drm/lib/drm_random.h

   1 #ifndef __DRM_RANDOM_H__
   2 #define __DRM_RANDOM_H__
   3
   4 /* This is a temporary home for a couple of utility functions that should
   5  * be transposed to lib/ at the earliest convenience.
   6  */
   7
   8 #include <linux/random.h>
   9
  10 #define DRM_RND_STATE_INITIALIZER(seed__) ({                            \
  11         struct rnd_state state__;                                       \
  12         prandom_seed_state(&state__, (seed__));                         \
  13         state__;                                                        \
  14 })
  15
  16 #define DRM_RND_STATE(name__, seed__) \
  17         struct rnd_state name__ = DRM_RND_STATE_INITIALIZER(seed__)
  18
  19 unsigned int *drm_random_order(unsigned int count,
  20                                struct rnd_state *state);
  21 void drm_random_reorder(unsigned int *order,
  22                         unsigned int count,
  23                         struct rnd_state *state);
  24
  25 #endif /* !__DRM_RANDOM_H__ */