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authorEric Anholt <eric@anholt.net>2015-10-09 20:25:07 -0700
committerEric Anholt <eric@anholt.net>2015-12-07 20:01:56 -0800
commitc826a6e1064419f78855463cf29ce9e8b9d25bf4 (patch)
tree5e14c5eccefaaf37b87684737e852ba87a621d89 /include/uapi/drm/Kbuild
parent10028c5ab107d3765c7fc282b6c45324d1602155 (diff)
drm/vc4: Add a BO cache.
We need to allocate new BOs in the kernel as part of each frame, but the CMA allocator is way too slow for that. As an optimization, keep track of recently-freed BOs and reuse them, with a 1 second timeout to fully free them back to the system. This improves 3D performance by about 15%. Signed-off-by: Eric Anholt <eric@anholt.net>
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