sysconf(3) extensions.

[Pawel Jakub Dawidek]

On Thu, Dec 14, 2006 at 09:02:40AM +0800, Rong-en Fan wrote:
> On 11/2/06, Pawel Jakub Dawidek <pjd at freebsd.org> wrote:
> >On Wed, Nov 01, 2006 at 01:59:52PM -0600, Brooks Davis wrote:
> >> On Wed, Nov 01, 2006 at 08:46:18PM +0100, Pawel Jakub Dawidek wrote:
> >> > On Wed, Nov 01, 2006 at 01:24:57PM -0600, Brooks Davis wrote:
> >> > > On Wed, Nov 01, 2006 at 08:06:06PM +0100, Pawel Jakub Dawidek wrote:
> >> > > > Hi.
> >> > > >
> >> > > > I'd like to add two non-standard value to the sysconf(3) functions,
> >> > > > which can be found in both Solaris and Linux: _SC_PHYS_PAGES and
> >> > > > _SC_AVPHYS_PAGES.
> >> > > >
> >> > > > The patch is here:
> >> > > >
> >> > > >         http://people.freebsd.org/~pjd/patches/sysconf.patch
> >> > > >
> >> > > > Can someone review it? Thanks.
> >> > >
> >> > > What are they for?  My concern is that _SC_AVPHYS_PAGES isn't going to
> >> > > semantically match other platforms since in a steady state the free count
> >> > > is small on FreeBSD, but on other systems it swings quite a bit based on
> >> > > load.
> >> >
> >> > _SC_PHYS_PAGES is used by libzpool (a part of the ZFS file system).
> >> > _SC_AVPHYS_PAGES I used more for completness.
> >>
> >> OK.  I'd be somewhat inclined to leave _SC_AVPHYS_PAGES out in that
> >> case, but I don't feel strongly about it.
> >
> >I've no opinion, I can remove it.
> 
> What's the status of _SC_PHYS_PAGES? I'm porting mbuffer [1], which
> uses _SC_PHYS_PAGES.

I just committed it to HEAD.

-- 
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd at FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!
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