[PATCH] hugepages: cache THP mode and page size [BZ #34083]

[H.J. Lu]

On Sat, May 2, 2026 at 4:35 PM Shamil Abdulaev <ashamil435@gmail.com> wrote:
>
> On Sat, May 2, 2026 at 6:27 AM H.J. Lu <hjl.tools@gmail.com> wrote:
> > I took a different approach:
> > https://gitlab.com/x86-glibc/glibc/-/commits/users/hjl/hugepage/pr34083
> >
> > since 2 THP optimizations can be controlled independently.   They share
> > the same THP mode only if both are enabled.
>
> Thanks for the pointer.
>
> Your "Support THP segment load with madvise enabled THP" series is at
> v6 and under review by Carlos -- great, that covers BZ #34079 / BZ #34080
> well, and I am not trying to compete there.
>
> For BZ #34083 specifically, the malloc commit b7b121c on your branch
> ("malloc: Don't call __get_thp_mode/__get_thp_size twice") does not
> appear to have been posted to libc-alpha.  A search of the archive for
> that subject returns no results, so currently the only public patch
> addressing #34083 is mine.
>
> If you plan to post b7b121c as a follow-up to the v6 series, please let
> me know the timing and I am happy to wait, withdraw, or rebase.

I will post my bz #34083 patch after my v6 THP patch is merged.

> Otherwise, could my standalone caching fix for #34083 land?  It is
> independent of the madvise rework, and your malloc commit could rebase
> on top trivially if you decide to post it later.
>
> Thanks,
> Shamil



-- 
H.J.