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Allow VM_KMEM_SIZE to be tuned from the kernel environment. This tuning

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value *completely* overrides any value precalculated by the kernel.
This commit is contained in:
Mike Smith 1999-01-21 21:54:32 +00:00
parent 24650a3ceb
commit 8de6e8e102
1 changed files with 6 additions and 1 deletions
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7
sys/kern/kern_malloc.c
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@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)kern_malloc.c 8.3 (Berkeley) 1/4/94
* $Id: kern_malloc.c,v 1.51 1999/01/10 01:58:24 eivind Exp $
* $Id: kern_malloc.c,v 1.52 1999/01/21 08:29:04 dillon Exp $
*/
#include "opt_vm.h"
@ -395,6 +395,7 @@ kmeminit(dummy)
register long indx;
int npg;
int mem_size;
int xvm_kmem_size;
#if ((MAXALLOCSAVE & (MAXALLOCSAVE - 1)) != 0)
#error "kmeminit: MAXALLOCSAVE not power of 2"
@ -431,6 +432,10 @@ kmeminit(dummy)
vm_kmem_size = VM_KMEM_SIZE_MAX;
#endif
/* Allow final override from the kernel environment */
if (getenv_int("kern.vm.kmem.size", &xvm_kmem_size))
vm_kmem_size = xvm_kmem_size;
if (vm_kmem_size > 2 * (cnt.v_page_count * PAGE_SIZE))
vm_kmem_size = 2 * (cnt.v_page_count * PAGE_SIZE);