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authorRob Clark <robclark@freedesktop.org>2013-12-13 12:48:30 -0500
committerRob Clark <robclark@freedesktop.org>2013-12-13 15:48:10 -0500
commit068ea68b3f7ebd5efcfcc2f6ae417651423c8382 (patch)
treee094e44e8d01c33ab8e5d74aa489308f267d3eea /radeon
parent1489811a805fb6b5b19d61fa99b9b962cc06bd22 (diff)
freedreno: add bo cache
Workloads which create many transient buffers cause significant CPU overhead in buffer allocation, zeroing, cache maint, and mmap setup. By caching and re-using existing buffers, the CPU overhead drops significantly. See: http://bloggingthemonkey.blogspot.com/2013/09/freedreno-update-moar-fps.html A simple time based policy is used for purging the cache. Once the kernel supports it, we could use madvise style API to handle memory pressure scenarios a bit better. Signed-off-by: Rob Clark <robclark@freedesktop.org>
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