[lkml]   [2010]   [Oct]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC][PATCH 1/3] contigous big page allocator
On Wed, 13 Oct 2010 09:01:43 +0200
Andi Kleen <> wrote:

> KAMEZAWA Hiroyuki <> writes:
> >
> > What this wants to do:
> > allocates a contiguous chunk of pages larger than MAX_ORDER.
> > for device drivers (camera? etc..)
> I think to really move forward you need a concrete use case
> actually implemented in tree.

yes. I heard there were users at LinuxCon Japan, so restarted.
I heared video-for-linux + ARM wants this.

I found this thread, now.


> > My intention is not for allocating HUGEPAGE(> MAX_ORDER).
> I still believe using this for 1GB pages would be one of the more
> interesting use cases.

I'm successfully allocating 1GB of continous pages at test. But I'm not sure
requirements and users. How quick this allocation should be ?
For example, if prep_new_page() for 1GB page is slow, what kind of chunk-of-page
construction is the best.


 \ /
  Last update: 2010-10-13 09:19    [W:0.196 / U:0.180 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site