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authorChris Wilson <chris@chris-wilson.co.uk>2016-12-22 11:36:08 +0300
committerDaniel Vetter <daniel.vetter@ffwll.ch>2016-12-27 14:34:00 +0300
commita33d42dd03352d2e9d3d2c00bfa435c7a5ebab25 (patch)
treea2d74a1f6f6e31bdf0788d24c66feee224056003 /drivers/gpu/drm/Kconfig
parentcf4a7207b1cb4a3c3fe3aa11a83c9d673722a7f5 (diff)
downloadlinux-a33d42dd03352d2e9d3d2c00bfa435c7a5ebab25.tar.xz
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 'drivers/gpu/drm/Kconfig')
-rw-r--r--drivers/gpu/drm/Kconfig4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index ebfe8404c25f..45a1c7468e88 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -321,3 +321,7 @@ config DRM_SAVAGE
chipset. If M is selected the module will be called savage.
endif # DRM_LEGACY
+
+config DRM_LIB_RANDOM
+ bool
+ default n