svn commit: r233290 - head/sys/amd64/amd64

[Alan Cox]

On 03/22/2012 03:12, Sergey Kandaurov wrote:
> On 22 March 2012 08:40, Alan Cox<alc at freebsd.org>  wrote:
>> Author: alc
>> Date: Thu Mar 22 04:40:22 2012
>> New Revision: 233290
>> URL: http://svn.freebsd.org/changeset/base/233290
>>
>> Log:
>>   Change pv_entry_count to a long.  During the lifetime of FreeBSD 10.x,
>>   physical memory sizes at the high-end will likely reach a point that
>>   the number of pv entries could overflow an int.
>>
>>   Submitted by: kib
>>
>> Modified:
>>   head/sys/amd64/amd64/pmap.c
>>
> While there, maybe also do something with these semi-debug-ish
> vm.pmap.pc_chunk_(allocs|frees) like change them to [u_]long too, move
> under debug or just drop them? While they can be useful for someone,
> pc_chunk_(allocs|frees) have also an "int" and quite quickly overflow.
> Though e.g. vm.pmap.pv_entry_(allocs|frees) have a long.
>

Yes, in the next month or two I'm going to be making some changes to the 
way that pmap_collect() works.  I will be eliminating a couple of the 
counters as part of those changes.  I will deal with the rest of the 
counters at the same time.

Alan