cvs commit: src/sys/i386/i386 pmap.c

[Peter Wemm]

On Monday 01 May 2006 14:32, Maxim Sobolev wrote:
> Just curious what does it bring us in terms of performance/memory
> savings?

Mostly neutral performance.  It allows us to free otherwise unused 
memory.

> -Maxim
>
> Peter Wemm wrote:
> > peter       2006-05-01 21:22:38 UTC
> >
> >   FreeBSD src repository
> >
> >   Modified files:
> >     sys/i386/i386        pmap.c
> >   Log:
> >   Using an idea from Stephan Uphoff, use the empty pte's that
> > correspond to the unused kva in the pv memory block to thread a
> > freelist through. This allows us to free pages that used to be used
> > for pv entry chunks since we can now track holes in the kva memory
> > block.
> >
> >   Idea from:  ups
> >
> >   Revision  Changes    Path
> >   1.555     +115 -50   src/sys/i386/i386/pmap.c

-- 
Peter Wemm - peter at wemm.org; peter at FreeBSD.org; peter at yahoo-inc.com
"All of this is for nothing if we don't go to the stars" - JMS/B5