Re: 2.6.17-rc5-mm1

[Martin Bligh <mbligh@google.com>]

Christoph Lameter wrote:
> On Mon, 5 Jun 2006, Martin Bligh wrote:
> 
> 
>>>How was the kernel compiled? It must have been running on a NUMA system for
>>>page migration to be enabled. Otherwise the fallback definitions in
>>>include/linux/swapops.h should remove all the swap migration entry handling.
>>
>>x86_64 NUMA. Config is here:
>>http://ftp.kernel.org/pub/linux/kernel/people/mbligh/config/abat/amd64
>>
>>mtest01 was what killed it, IIRC.
> 
> 
> CONFIG_MIGRATION is not set, no CONFIG_MIGRATION entry is in .config, so 
> page migration was not compiled in. You also forgot to do "make oldconfig" 
> when building the kernel. If you do a "make oldconfig" then your kernel 
> will be build with page migration support.

No, that is the config it starts with, sorry ... that was misleading.
It then does makeoldconfig from there:

http://test.kernel.org/abat/34624/build/dotconfig

is teh one one from the -mm3 build

CONFIG_MIGRATION=y

> Either what we see is due to code rearrangement or there is something wrong with 
> the fallback definitions in include/linux/swapops.h. 
> 
> The swapless-pm-add-r-w-migration-entries.patch also introduces Hugh's 
> reversal of the anon_vma list.

OK, are those easily separable? Sounds like one good test would be to
force CONFIG_MIGRATION to =n, right?

M.