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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2016-12-22 08:36:08 +0000 |
|---|---|---|
| committer |   Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-12-27 12:34:00 +0100 |
| commit | a33d42dd03352d2e9d3d2c00bfa435c7a5ebab25 (patch) | |
| tree | a2d74a1f6f6e31bdf0788d24c66feee224056003 /tools/testing/selftests/drivers | |
| parent | lib: Add a simple prime number generator (diff) | |
| download | linux-dev-a33d42dd03352d2e9d3d2c00bfa435c7a5ebab25.tar.xz linux-dev-a33d42dd03352d2e9d3d2c00bfa435c7a5ebab25.zip | |
drm: Add a simple generator of random permutations
When testing, we want a random but yet reproducible order in which to
process elements. Here we create an array which is a random (using the
Tausworthe PRNG) permutation of the order in which to execute.
Note these are simple helpers intended to be merged upstream in lib/
v2: Tidier code by David Herrmann
v3: Add reminder that this code is intended to be temporary, with at
least the bulk of the prandom changes going to lib/
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161222083641.2691-6-chris@chris-wilson.co.uk
Diffstat (limited to 'tools/testing/selftests/drivers')
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