diff options
Diffstat (limited to 'drivers/gpu/drm/i915/selftests/i915_random.h')
| -rw-r--r-- | drivers/gpu/drm/i915/selftests/i915_random.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_random.h b/drivers/gpu/drm/i915/selftests/i915_random.h index 6c9379871384..70330a2e80f2 100644 --- a/drivers/gpu/drm/i915/selftests/i915_random.h +++ b/drivers/gpu/drm/i915/selftests/i915_random.h @@ -25,7 +25,8 @@ #ifndef __I915_SELFTESTS_RANDOM_H__ #define __I915_SELFTESTS_RANDOM_H__ -#include <linux/random.h> +#include <linux/math64.h> +#include <linux/prandom.h> #include "../i915_selftest.h" @@ -43,10 +44,22 @@ u64 i915_prandom_u64_state(struct rnd_state *rnd); +static inline u32 i915_prandom_u32_max_state(u32 ep_ro, struct rnd_state *state) +{ + return upper_32_bits(mul_u32_u32(prandom_u32_state(state), ep_ro)); +} + unsigned int *i915_random_order(unsigned int count, struct rnd_state *state); void i915_random_reorder(unsigned int *order, unsigned int count, struct rnd_state *state); +void i915_prandom_shuffle(void *arr, size_t elsz, size_t count, + struct rnd_state *state); + +u64 igt_random_offset(struct rnd_state *state, + u64 start, u64 end, + u64 len, u64 align); + #endif /* !__I915_SELFTESTS_RANDOM_H__ */ |