cvs commit: src/sys/alpha/alpha pmap.c src/sys/amd64/amd64 pmap.c src/sys/i386/i386 pmap.c src/sys/ia64/ia64 pmap.c src/sys/powerpc/powerpc pmap.c src/sys/sparc64/sparc64 pmap.c src/sys/vm pmap.h vm_pageout.c

[Alan Cox]

alc         2005-11-09 08:19:21 UTC

  FreeBSD src repository

  Modified files:
    sys/alpha/alpha      pmap.c 
    sys/amd64/amd64      pmap.c 
    sys/i386/i386        pmap.c 
    sys/ia64/ia64        pmap.c 
    sys/powerpc/powerpc  pmap.c 
    sys/sparc64/sparc64  pmap.c 
    sys/vm               pmap.h vm_pageout.c 
  Log:
  Reimplement the reclamation of PV entries.  Specifically, perform
  reclamation synchronously from get_pv_entry() instead of
  asynchronously as part of the page daemon.  Additionally, limit the
  reclamation to inactive pages unless allocation from the PV entry zone
  or reclamation from the inactive queue fails.  Previously, reclamation
  destroyed mappings to both inactive and active pages.  get_pv_entry()
  still, however, wakes up the page daemon when reclamation occurs.  The
  reason being that the page daemon may move some pages from the active
  queue to the inactive queue, making some new pages available to future
  reclamations.
  
  Print the "reclaiming PV entries" message at most once per minute, but
  don't stop printing it after the fifth time.  This way, we do not give
  the impression that the problem has gone away.
  
  Reviewed by: tegge
  
  Revision  Changes    Path
  1.184     +41 -30    src/sys/alpha/alpha/pmap.c
  1.533     +42 -33    src/sys/amd64/amd64/pmap.c
  1.538     +42 -35    src/sys/i386/i386/pmap.c
  1.170     +65 -14    src/sys/ia64/ia64/pmap.c
  1.103     +0 -2      src/sys/powerpc/powerpc/pmap.c
  1.150     +0 -2      src/sys/sparc64/sparc64/pmap.c
  1.73      +0 -2      src/sys/vm/pmap.h
  1.270     +0 -34     src/sys/vm/vm_pageout.c