| Chris Wilson | a33d42d | 2016-12-22 08:36:08 +0000 | [diff] [blame] | 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__ */ |