Quoting Chris Wilson (2018-02-19 10:57:28)
> When we insert a node into a hole inside the interval tree, we need to
> climb the layers above us to update the cached interval. When doing so,
> we know that the initial node exists as it is our starting hole.
> 
> add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-10 (-10)
> Function                                     old     new   delta
> drm_mm_interval_tree_add_node                221     211     -10
> 
> Signed-off-by: Chris Wilson <[email protected]>

Reviewed-by: Joonas Lahtinen <[email protected]>

Regards, Joonas
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