Module Name: src
Committed By: reinoud
Date: Thu Sep 15 15:08:51 UTC 2011
Modified Files:
src/sys/arch/usermode/usermode: pmap.c
Log Message:
Implement pmap_unwire(); not seen it called yet though
To generate a diff of this commit:
cvs rdiff -u -r1.66 -r1.67 src/sys/arch/usermode/usermode/pmap.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/usermode/usermode/pmap.c
diff -u src/sys/arch/usermode/usermode/pmap.c:1.66 src/sys/arch/usermode/usermode/pmap.c:1.67
--- src/sys/arch/usermode/usermode/pmap.c:1.66 Thu Sep 15 15:02:35 2011
+++ src/sys/arch/usermode/usermode/pmap.c Thu Sep 15 15:08:51 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.c,v 1.66 2011/09/15 15:02:35 reinoud Exp $ */
+/* $NetBSD: pmap.c,v 1.67 2011/09/15 15:08:51 reinoud Exp $ */
/*-
* Copyright (c) 2011 Reinoud Zandijk <[email protected]>
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.66 2011/09/15 15:02:35 reinoud Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.67 2011/09/15 15:08:51 reinoud Exp $");
#include "opt_memsize.h"
#include "opt_kmempages.h"
@@ -892,7 +892,22 @@
void
pmap_unwire(pmap_t pmap, vaddr_t va)
{
-printf("pmap_unwire called not implemented\n'");
+ struct pv_entry *pv;
+ intptr_t lpn;
+
+ dprintf_debug("pmap_unwire called\n'");
+ if (pmap == NULL)
+ return;
+
+ lpn = atop(va - VM_MIN_ADDRESS); /* V->L */
+ pv = pmap->pm_entries[lpn];
+ if (pv == NULL)
+ return;
+ /* but is it wired? */
+ if ((pv->pv_vflags & PV_WIRED) == 0)
+ return;
+ pmap->pm_stats.wired_count--;
+ pv->pv_vflags &= ~PV_WIRED;
}
bool
