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From: Michal Hocko <mhocko@kernel.org>
To: Rob Herring <robh@kernel.org>
Cc: linux-mm@kvack.org, hannes@cmpxchg.org,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-arch@vger.kernel.org,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: why do we still need bootmem allocator?
Date: Mon, 25 Jun 2018 20:03:32 +0200	[thread overview]
Message-ID: <20180625180332.GR28965@dhcp22.suse.cz> (raw)
In-Reply-To: <CABGGisyVpfYCz7-5AGB-3Ld9hcuikPVk=19xPc1AwffjhsV+kg@mail.gmail.com>

On Mon 25-06-18 10:09:41, Rob Herring wrote:
> On Mon, Jun 25, 2018 at 8:08 AM Michal Hocko <mhocko@kernel.org> wrote:
> >
> > Hi,
> > I am wondering why do we still keep mm/bootmem.c when most architectures
> > already moved to nobootmem. Is there any fundamental reason why others
> > cannot or this is just a matter of work?
> 
> Just because no one has done the work. I did a couple of arches
> recently (sh, microblaze, and h8300) mainly because I broke them with
> some DT changes.

I see

> > Btw. what really needs to be
> > done? Btw. is there any documentation telling us what needs to be done
> > in that regards?
> 
> No. The commits converting the arches are the only documentation. It's
> a bit more complicated for platforms that have NUMA support.

I do not see why should be NUMA a problem but I will have a look at your
commits to see what you have done.

Thanks!
-- 
Michal Hocko
SUSE Labs

  reply	other threads:[~2018-06-25 18:03 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-25 14:07 why do we still need bootmem allocator? Michal Hocko
2018-06-25 16:09 ` Rob Herring
2018-06-25 18:03   ` Michal Hocko [this message]
2018-06-27 10:11   ` Mike Rapoport
2018-06-27 10:40     ` Michal Hocko
2018-06-27 13:58     ` Rob Herring
2018-06-27 13:58       ` Rob Herring
2018-06-27 15:58       ` Mike Rapoport
2018-06-27 15:58         ` Mike Rapoport
2018-06-27 11:26   ` Mike Rapoport
2018-06-27 13:33     ` Rob Herring
2018-06-27 13:33       ` Rob Herring
2018-06-27 16:02       ` Mike Rapoport
2018-06-27 16:02         ` Mike Rapoport
2018-07-01 12:22         ` h8300: BUG: Bad page state in process swapper (was: Re: why do we still need bootmem allocator?) Mike Rapoport
2018-07-01 12:22           ` Mike Rapoport
2018-07-02  6:09           ` Yoshinori Sato
2018-07-02  6:09             ` Yoshinori Sato
2018-07-12 14:40           ` Yoshinori Sato
2018-07-12 14:40             ` Yoshinori Sato

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