svn commit: r233011 - head/sys/powerpc/aim
Alan Cox
alc at rice.edu
Thu Mar 15 22:18:47 UTC 2012
On 3/15/2012 2:36 PM, Nathan Whitehorn wrote:
> Author: nwhitehorn
> Date: Thu Mar 15 19:36:52 2012
> New Revision: 233011
> URL: http://svn.freebsd.org/changeset/base/233011
>
> Log:
> Improve algorithm for deciding whether to loop through all process pages
> or look them up individually in pmap_remove() and apply the same logic
> in the other ranged operation (pmap_protect). This speeds up make
> installworld by a factor of 2 on powerpc64.
>
> MFC after: 1 week
>
> Modified:
> head/sys/powerpc/aim/mmu_oea64.c
>
As an additional, related optimization, you should look into
implementing pmap_remove_pages().
Alan
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