1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __DRM_RANDOM_H__ 3 #define __DRM_RANDOM_H__ 4 5 /* This is a temporary home for a couple of utility functions that should 6 * be transposed to lib/ at the earliest convenience. 7 */ 8 9 #include <linux/random.h> 10 11 #define DRM_RND_STATE_INITIALIZER(seed__) ({ \ 12 struct rnd_state state__; \ 13 prandom_seed_state(&state__, (seed__)); \ 14 state__; \ 15 }) 16 17 #define DRM_RND_STATE(name__, seed__) \ 18 struct rnd_state name__ = DRM_RND_STATE_INITIALIZER(seed__) 19 20 unsigned int *drm_random_order(unsigned int count, 21 struct rnd_state *state); 22 void drm_random_reorder(unsigned int *order, 23 unsigned int count, 24 struct rnd_state *state); 25 u32 drm_prandom_u32_max_state(u32 ep_ro, 26 struct rnd_state *state); 27 28 #endif /* !__DRM_RANDOM_H__ */ 29