[src/trunk]: src/sys/rump/librump/rumpkern fill in a few more uvmexp entries

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

details:   https://anonhg.NetBSD.org/src/rev/317476cc4af8
branches:  trunk
changeset: 796663:317476cc4af8
user:      pooka <pooka%NetBSD.org@localhost>
date:      Fri Jun 13 11:48:56 2014 +0000

description:
fill in a few more uvmexp entries

diffstat:

 sys/rump/librump/rumpkern/vm.c |  28 +++++++++++++++++++++-------
 1 files changed, 21 insertions(+), 7 deletions(-)

diffs (61 lines):

diff -r fc874feee281 -r 317476cc4af8 sys/rump/librump/rumpkern/vm.c
--- a/sys/rump/librump/rumpkern/vm.c    Fri Jun 13 11:26:37 2014 +0000
+++ b/sys/rump/librump/rumpkern/vm.c    Fri Jun 13 11:48:56 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vm.c,v 1.156 2014/04/25 13:20:45 pooka Exp $   */
+/*     $NetBSD: vm.c,v 1.157 2014/06/13 11:48:56 pooka Exp $   */
 
 /*
  * Copyright (c) 2007-2011 Antti Kantee.  All Rights Reserved.
@@ -41,7 +41,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vm.c,v 1.156 2014/04/25 13:20:45 pooka Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vm.c,v 1.157 2014/06/13 11:48:56 pooka Exp $");
 
 #include <sys/param.h>
 #include <sys/atomic.h>
@@ -306,15 +306,15 @@
 
                if (rump_physmemlimit / mult != tmp)
                        panic("uvm_init: RUMP_MEMLIMIT overflow: %s", buf);
-               /* it's not like we'd get far with, say, 1 byte, but ... */
-               if (rump_physmemlimit < 1024*1024)
-                       printf("uvm_init: WARNING: <1MB RAM limit, "
-                           "hope you know what you're doing\n");
 
                /* reserve some memory for the pager */
                pdlimit = rump_physmemlimit;
                rump_physmemlimit -= 2*MAXPHYS;
 
+               if (pdlimit < 1024*1024)
+                       printf("uvm_init: WARNING: <1MB RAM limit, "
+                           "hope you know what you're doing\n");
+
 #define HUMANIZE_BYTES 9
                CTASSERT(sizeof(buf) >= HUMANIZE_BYTES);
                format_bytes(buf, HUMANIZE_BYTES, rump_physmemlimit);
@@ -327,7 +327,21 @@
 
        TAILQ_INIT(&vmpage_lruqueue);
 
-       uvmexp.free = 1024*1024; /* XXX: arbitrary & not updated */
+       if (rump_physmemlimit == RUMPMEM_UNLIMITED) {
+               uvmexp.npages = physmem;
+       } else {
+               uvmexp.npages = pdlimit >> PAGE_SHIFT;
+               uvmexp.reserve_pagedaemon
+                   = (pdlimit-rump_physmemlimit) >> PAGE_SHIFT;
+               uvmexp.freetarg = (rump_physmemlimit-dddlim) >> PAGE_SHIFT;
+       }
+       /*
+        * uvmexp.free is not used internally or updated.  The reason is
+        * that the memory hypercall allocator is allowed to allocate
+        * non-page sized chunks.  We use a byte count in curphysmem
+        * instead.
+        */
+       uvmexp.free = uvmexp.npages;
 
 #ifndef __uvmexp_pagesize
        uvmexp.pagesize = PAGE_SIZE;