Re: [PATCH v10 00/13] khugepaged: mTHP support

On Tue, Aug 19, 2025 at 3:55 PM Andrew Morton [off-list ref] wrote:

On Tue, 19 Aug 2025 07:41:52 -0600 Nico Pache [off-list ref] wrote:

quoted

The following series provides khugepaged with the capability to collapse
anonymous memory regions to mTHPs.

...

- I created a test script that I used to push khugepaged to its limits
   while monitoring a number of stats and tracepoints. The code is
   available here[1] (Run in legacy mode for these changes and set mthp
   sizes to inherit)

Could this be turned into something in tools/testing/selftests/mm/?

Yep! I was actually working on some selftests for this before I hit a
weird bug during some of my testing, which took precedence over that.

I was planning on sending a separate series for the testing. One of
the pain points was that selftests helpers were set up for PMDs, but I
think Baolin just cleaned that up in his khugepaged mTHP shmem series
(still need to review). So it should be a lot easier to implement now.

quoted

V10 Changes:

I'll add this to mm-new, thanks.  I'll suppress the usual emails.

Thank you :)
-- Nico