drivers/gpu/tests/gpu_random.h

Source file repositories/reference/linux-study-clean/drivers/gpu/tests/gpu_random.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/tests/gpu_random.h
Extension
.h
Size
796 bytes
Lines
29
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#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__ */

Annotation

Implementation Notes