sysctl for querying kmem_map->size

[Andriy Gapon]

on 30/09/2010 21:52 Garrett Cooper said the following:
> On Thu, Sep 30, 2010 at 10:17 AM, Andriy Gapon <avg at icyb.net.ua> wrote:
>>
>> Here's a patch that adds a sysctl for querying kmem_map->size, which may be useful
>> for system state/resources monitoring:
>> http://people.freebsd.org/~avg/sysctl-kmem_map_size.diff
>>
>> I am quite unsure about sizeof(kmem_map->size) == sizeof(int) hack, but I couldn't
>> think of other way to decide whether to use SYSCTL_ADD_UINT or SYSCTL_ADD_ULONG
>> depending on real type behind vm_size_t.
> 
>     Is the base value of the field size_t? If so, then it's ulong on
> 64-bit archs and uint on 32-bit archs. Maybe it's a good time then to

No, it's vm_size_t, but it's defined similarly to size_t I guess:
vm_size_t -> __vm_size_t -> {__uint32_t or __uint64_t depending on arch}

> actually get the sysctl and tunables work that I started on into base.
> I have a functioning and tested copy of the tunables work, but I'll
> need to do similar for the sysctls as well (des@ and I kind of got out
> of sync a few months back).

I believe that this is the first time I hear about this project.

-- 
Andriy Gapon