[src/trunk]: src/sys/arch/arm/arm32 Switch from only UVM_PGA_STRAT_ONLY to UV...

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c7e32796ad9d
branches:  trunk
changeset: 784119:c7e32796ad9d
user:      matt <matt%NetBSD.org@localhost>
date:      Sat Jan 19 00:15:09 2013 +0000

description:
Switch from only UVM_PGA_STRAT_ONLY to UVM_PGA_STRAT_FALLBACK in
arm_pmap_alloc_poolpage.

diffstat:

 sys/arch/arm/arm32/pmap.c |  12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)

diffs (35 lines):

diff -r 57105f3978c1 -r c7e32796ad9d sys/arch/arm/arm32/pmap.c
--- a/sys/arch/arm/arm32/pmap.c Sat Jan 19 00:14:11 2013 +0000
+++ b/sys/arch/arm/arm32/pmap.c Sat Jan 19 00:15:09 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pmap.c,v 1.247 2013/01/11 12:04:00 matt Exp $  */
+/*     $NetBSD: pmap.c,v 1.248 2013/01/19 00:15:09 matt Exp $  */
 
 /*
  * Copyright 2003 Wasabi Systems, Inc.
@@ -212,7 +212,7 @@
 #include <arm/cpuconf.h>
 #include <arm/arm32/katelib.h>
 
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.247 2013/01/11 12:04:00 matt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.248 2013/01/19 00:15:09 matt Exp $");
 
 #ifdef PMAP_DEBUG
 
@@ -6929,11 +6929,13 @@
 {
        /*
         * On some systems, only some pages may be "coherent" for dma and we
-        * want to use those for pool pages (think mbufs).
+        * want to prefer those for pool pages (think mbufs) but fallback to
+        * any page if none is available.
         */
-       if (arm_poolpage_vmfreelist != VM_FREELIST_DEFAULT)
+       if (arm_poolpage_vmfreelist != VM_FREELIST_DEFAULT) {
                return uvm_pagealloc_strat(NULL, 0, NULL, flags,
-                   UVM_PGA_STRAT_ONLY, arm_poolpage_vmfreelist);
+                   UVM_PGA_STRAT_FALLBACK, arm_poolpage_vmfreelist);
+       }
 
        return uvm_pagealloc(NULL, 0, NULL, flags);
 }