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When we finally decide the gpu is idle, that is a good time to shrink our kmem_caches. v3: Defer until an rcu grace period after we idle. v4: Think about epoch wraparound and how likely that is. v5: Use I915_EPOCH_INVALID magic. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180124113608.14909-2-chris@chris-wilson.co.uk |
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