Re: [LSF/MM TOPIC][LSF/MM,ATTEND] shared TLB, hugetlb reservations

From: Michal Hocko
Date: Mon Apr 03 2017 - 07:51:46 EST


On Wed 08-03-17 17:30:55, Mike Kravetz wrote:
> On 01/10/2017 03:02 PM, Mike Kravetz wrote:
> > Another more concrete topic is hugetlb reservations. Michal Hocko
> > proposed the topic "mm patches review bandwidth", and brought up the
> > related subject of areas in need of attention from an architectural
> > POV. I suggested that hugetlb reservations was one such area. I'm
> > guessing it was introduced to solve a rather concrete problem. However,
> > over time additional hugetlb functionality was added and the
> > capabilities of the reservation code was stretched to accommodate.
> > It would be good to step back and take a look at the design of this
> > code to determine if a rewrite/redesign is necessary. Michal suggested
> > documenting the current design/code as a first step. If people think
> > this is worth discussion at the summit, I could put together such a
> > design before the gathering.
>
> I attempted to put together a design/overview of how hugetlb reservations
> currently work. Hopefully, this will be useful.

I am still too busy to read through this carefuly and provide a useful
feedback but I believe this should go int Documentation/vm/hugetlb$foo
file. Care to send it as a patch please?
--
Michal Hocko
SUSE Labs