diff options
Diffstat (limited to 'drivers/gpu/tests/gpu_random.h')
| -rw-r--r-- | drivers/gpu/tests/gpu_random.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/gpu/tests/gpu_random.h b/drivers/gpu/tests/gpu_random.h new file mode 100644 index 000000000000..b68cf3448264 --- /dev/null +++ b/drivers/gpu/tests/gpu_random.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __GPU_RANDOM_H__ +#define __GPU_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 GPU_RND_STATE_INITIALIZER(seed__) ({ \ + struct rnd_state state__; \ + prandom_seed_state(&state__, (seed__)); \ + state__; \ +}) + +#define GPU_RND_STATE(name__, seed__) \ + struct rnd_state name__ = GPU_RND_STATE_INITIALIZER(seed__) + +unsigned int *gpu_random_order(unsigned int count, + struct rnd_state *state); +void gpu_random_reorder(unsigned int *order, + unsigned int count, + struct rnd_state *state); +u32 gpu_prandom_u32_max_state(u32 ep_ro, + struct rnd_state *state); + +#endif /* !__GPU_RANDOM_H__ */ |