[PATCH v6 1/6] hugepages: Move THP helpers to generic hugepages abstraction

[Wilco Dijkstra]

Hi Rui,

> The helpers for determining the default transparent huge page size
> and THP mode are currently implemented in malloc-hugepages. However,
> these interfaces are not malloc-specific and are also needed by other
> subsystems (e.g. the dynamic loader for segment alignment).
>
> Introduce a new generic hugepages abstraction and move the THP mode
> detection, default THP page size probing, and hugepage configuration
> helpers there. The malloc code now calls into the generic helpers
> instead of duplicating the sysfs parsing.
>
> There is no functional change. This is a pure refactoring to make
> the THP detection reusable outside of malloc.

Looks good to me, thanks for cleaning this up!

Reviewed-by: Wilco Dijkstra  <Wilco.Dijkstra@arm.com>

> * malloc/arena.c (__ptmalloc_init): Rename DEFAULT_THP_PAGESIZE to

(aside: GLIBC doesn't require changelog entries)

Cheers,
Wilco