drm/i915/selftests: Extract random_offset() for use with a prng

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For selftests, we desire repeatability and so prefer using a prng with
known seed over true randomness. Extract random_offset() as a selftest
utility that can take the prng state.

Suggested-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191002122430.23205-1-chris@chris-wilson.co.uk

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Chris Wilson 2019-10-02 13:24:30 +01:00

parent 006e570128

commit dfe324f34c

3 changed files with 33 additions and 5 deletions

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14

drivers/gpu/drm/i915/selftests/i915_gem_gtt.c

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20

drivers/gpu/drm/i915/selftests/i915_random.c

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4

drivers/gpu/drm/i915/selftests/i915_random.h

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