svn commit: r246204 - head/sys/arm/include
Alan Cox
alc at rice.edu
Sat Feb 16 17:46:30 UTC 2013
On 02/16/2013 00:36, Oleksandr Tymoshenko wrote:
> On 2013-02-01, at 2:26 AM, Andre Oppermann <andre at freebsd.org> wrote:
>
>> Author: andre
>> Date: Fri Feb 1 10:26:31 2013
>> New Revision: 246204
>> URL: http://svnweb.freebsd.org/changeset/base/246204
>>
>> Log:
>> Add VM_KMEM_SIZE_SCALE parameter set to 2 (50%) for all ARM platforms.
>>
>> VM_KMEM_SIZE_SCALE specifies which fraction of the available physical
>> memory, after deduction of the kernel itself and other early statically
>> allocated memory, can be used for the kmem_map. The kmem_map provides
>> for all UMA/malloc allocations in KVM space.
>>
>> Previously ARM was using a fixed kmem_map size of (12*1024*1024) = 12MB
>> without regard to effectively available memory. This is too small for
>> recent ARM SoC with more than 128MB of RAM.
>>
>> For reference a description of others related kmem_map parameters:
>>
>> VM_KMEM_SIZE default start size of kmem_map if SCALE is
>> not defined
>> VM_KMEM_SIZE_MIN hard floor on the kmem_map size
>> VM_KMEM_SIZE_MAX hard ceiling on the kmem_map size
>> VM_KMEM_SIZE_SCALE fraction of the available real memory to
>> be used for the kmem_map, limited by the
>> MIN and MAX parameters.
>>
>> Tested by: ian
>> MFC after: 1 week
> Hi Andre,
>
> this commit brake my Pandaboard with 1GB of memory. It panics early with
> following message:
>
> kmem_suballoc: bad status return of 3
>
> If you need additional info/debugging - just let me know.
>
>
Have you tried the patch from the message that I posted to the arm
mailing listing on Monday? So far, no one has responded to my request
for testing that patch.
Regards,
Alan
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