Re: [Lsf-pc] [LSF/MM/BPF TOPIC]mTHP reliable allocation and reclamation

[Barry Song <21cnbao@gmail.com>]

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On Sat, May 11, 2024 at 8:33 AM Yu Zhao <yuzhao@google.com> wrote:
>
> On Fri, May 10, 2024 at 8:25 AM Michal Hocko <mhocko@suse.com> wrote:
> >
> > On Fri 10-05-24 14:42:07, Barry Song wrote:
> > [...]
> > > I'm completely open to discussing both topics in the same TAO session.
> > > Having a separate session isn't important to me at all.
> >
> > If we happen to still have some topics uncovered we can schedule a
> > follow up slot.
>
> Thanks, Michal.
>
> Barry, you are very welcome to present your alternative approach in
> the same session.
>
> In fact, it seems that we both independently explored this
> pageblock-based approach. I did share our design with a few folks and
> explained why we put it on the back burner and have been focusing on
> the zone-based approach since then.
>
> Let me attach the deck that outlines our design, hopefully, we'll have
> enough time to cover some of its ideas if there is enough interest.

Thank you. I'm also attaching our findings regarding mTHP allocation &
reclamation fallback, along with our approach and observations on running
TAO on Pixel 6.

From deploying mTHP on numerous phones, I've learned that I'm not keen
on using dedicated page blocks for mTHP. Instead, I prefer the virtual zone
approach due to the folio size conflict in a single LRU. Further details are
available in the attached PDF.

Best regards
Barry

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