diff options
| author | Markus Theil <theil.markus@gmail.com> | 2025-02-11 07:33:30 +0100 |
|---|---|---|
| committer | Andi Shyti <andi.shyti@linux.intel.com> | 2025-02-13 15:25:49 +0100 |
| commit | efa6fbd5899b975512c2ee684bbf98692259fbb4 (patch) | |
| tree | c219f68a7d6d1984cd49df7ec3db5788f5690044 | |
| parent | fc2ef5b6e1ab9717b1a0b588a39b410864091fa9 (diff) | |
drm/i915/selftests: use prandom in selftest
This is part of a prandom cleanup, which removes
next_pseudo_random32 and replaces it with the standard PRNG.
Signed-off-by: Markus Theil <theil.markus@gmail.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250211063332.16542-2-theil.markus@gmail.com
| -rw-r--r-- | drivers/gpu/drm/i915/selftests/i915_gem.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem.c b/drivers/gpu/drm/i915/selftests/i915_gem.c index 0727492576be..14efa6edd9e6 100644 --- a/drivers/gpu/drm/i915/selftests/i915_gem.c +++ b/drivers/gpu/drm/i915/selftests/i915_gem.c @@ -45,13 +45,15 @@ static void trash_stolen(struct drm_i915_private *i915) struct i915_ggtt *ggtt = to_gt(i915)->ggtt; const u64 slot = ggtt->error_capture.start; const resource_size_t size = resource_size(&i915->dsm.stolen); + struct rnd_state prng; unsigned long page; - u32 prng = 0x12345678; /* XXX: fsck. needs some more thought... */ if (!i915_ggtt_has_aperture(ggtt)) return; + prandom_seed_state(&prng, 0x12345678); + for (page = 0; page < size; page += PAGE_SIZE) { const dma_addr_t dma = i915->dsm.stolen.start + page; u32 __iomem *s; @@ -64,8 +66,7 @@ static void trash_stolen(struct drm_i915_private *i915) s = io_mapping_map_atomic_wc(&ggtt->iomap, slot); for (x = 0; x < PAGE_SIZE / sizeof(u32); x++) { - prng = next_pseudo_random32(prng); - iowrite32(prng, &s[x]); + iowrite32(prandom_u32_state(&prng), &s[x]); } io_mapping_unmap_atomic(s); } |