On 09/01/25 5:01 am, Nico Pache wrote:
Introduce the ability for khugepaged to collapse to different mTHP sizes. While scanning a PMD range for potential hugepage collapse, track pages in MIN_MTHP_ORDER chunks. Each bit represents a fully utilized region of order MIN_MTHP_ORDER ptes. With this bitmap we can determine which mTHP sizes would be the most efficient to collapse to if the PMD collapse is not suitible. Signed-off-by: Nico Pache <npache@xxxxxxxxxx>
For the actual bitmap optimization: give me some time, I'll get back to you.
