On Mon, Feb 17, 2025 at 7:54 AM Usama Arif usamaarif642@gmail.com wrote:
On 11/02/2025 00:40, Nico Pache wrote:
This series is a follow-up to [1], which adds mTHP support to khugepaged. mTHP khugepaged support was necessary for the global="defer" and mTHP="inherit" case (and others) to make sense.
Hi Nico,
Thanks for the patches!
Hi Usama,
Thank you for the review!
Why is mTHP khugepaged a prerequisite for THP=defer? THP=defer applies to PMD hugepages as well, so they should be independent.
Its not a hard prerequisite, but I explained it a little here: https://lore.kernel.org/lkml/CAA1CXcBPt4jHfH0Ggio5ghSYAQAXf08rO8R6b1faHzdjFf...
In general, the sysfs didnt really make sense without it, and given mTHPs came along right when i was working on defer, I decided to add it to mTHP too.
I worked on and tested these together so it felt right to sync up the V2s for both of them.
Cheers, -- Nico