| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __DRM_RANDOM_H__ |
| #define __DRM_RANDOM_H__ |
| |
| /* This is a temporary home for a couple of utility functions that should |
| * be transposed to lib/ at the earliest convenience. |
| */ |
| |
| #include <linux/prandom.h> |
| |
| #define DRM_RND_STATE_INITIALIZER(seed__) ({ \ |
| struct rnd_state state__; \ |
| prandom_seed_state(&state__, (seed__)); \ |
| state__; \ |
| }) |
| |
| #define DRM_RND_STATE(name__, seed__) \ |
| struct rnd_state name__ = DRM_RND_STATE_INITIALIZER(seed__) |
| |
| unsigned int *drm_random_order(unsigned int count, |
| struct rnd_state *state); |
| void drm_random_reorder(unsigned int *order, |
| unsigned int count, |
| struct rnd_state *state); |
| u32 drm_prandom_u32_max_state(u32 ep_ro, |
| struct rnd_state *state); |
| |
| #endif /* !__DRM_RANDOM_H__ */ |