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In order to reduce the penalty of fallbacks under memory pressure and to avoid a potential immediate ping-pong of evicting a mmaped buffer, we move the object to the tail of the inactive list when a page is freshly faulted or the object is moved into the CPU domain. We choose not to protect the CPU objects from casual eviction, preferring to keep the GPU active for as long as possible. v2: Daniel Vetter found a bug where I forgot that pinned objects are kept off the inactive list. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Eric Anholt <eric@anholt.net> |
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