1 /* $NetBSD: drm_random.h,v 1.2 2021/12/18 23:45:31 riastradh Exp $ */ 2 3 /* SPDX-License-Identifier: GPL-2.0 */ 4 #ifndef __DRM_RANDOM_H__ 5 #define __DRM_RANDOM_H__ 6 7 /* This is a temporary home for a couple of utility functions that should 8 * be transposed to lib/ at the earliest convenience. 9 */ 10 11 #include <linux/random.h> 12 13 #define DRM_RND_STATE_INITIALIZER(seed__) ({ \ 14 struct rnd_state state__; \ 15 prandom_seed_state(&state__, (seed__)); \ 16 state__; \ 17 }) 18 19 #define DRM_RND_STATE(name__, seed__) \ 20 struct rnd_state name__ = DRM_RND_STATE_INITIALIZER(seed__) 21 22 unsigned int *drm_random_order(unsigned int count, 23 struct rnd_state *state); 24 void drm_random_reorder(unsigned int *order, 25 unsigned int count, 26 struct rnd_state *state); 27 28 #endif /* !__DRM_RANDOM_H__ */ 29