cvs commit: src/sys/alpha/alpha pmap.c src/sys/amd64/amd64 pmap.c src/sys/i386/i386 pmap.c src/sys/vm vm_page.c

[Alan Cox]

alc         2004-07-29 18:56:31 UTC

  FreeBSD src repository

  Modified files:
    sys/alpha/alpha      pmap.c 
    sys/amd64/amd64      pmap.c 
    sys/i386/i386        pmap.c 
    sys/vm               vm_page.c 
  Log:
  Advance the state of pmap locking on alpha, amd64, and i386.
  
   - Enable recursion on the page queues lock.  This allows calls to
     vm_page_alloc(VM_ALLOC_NORMAL) and UMA's obj_alloc() with the page
     queues lock held.  Such calls are made to allocate page table pages
     and pv entries.
   - The previous change enables a partial reversion of vm/vm_page.c
     revision 1.216, i.e., the call to vm_page_alloc() by vm_page_cowfault()
     now specifies VM_ALLOC_NORMAL rather than VM_ALLOC_INTERRUPT.
   - Add partial locking to pmap_copy().  (As a side-effect, pmap_copy()
     should now be faster on i386 SMP because it no longer generates IPIs
     for TLB shootdown on the other processors.)
   - Complete the locking of pmap_enter() and pmap_enter_quick().  (As of now,
     all changes to a user-level pmap on alpha, amd64, and i386 are performed
     with appropriate locking.)
  
  Revision  Changes    Path
  1.164     +20 -13    src/sys/alpha/alpha/pmap.c
  1.487     +26 -20    src/sys/amd64/amd64/pmap.c
  1.490     +32 -16    src/sys/i386/i386/pmap.c
  1.290     +3 -6      src/sys/vm/vm_page.c