From d196417615cee2b0bef878d8bece937836f17b1f Mon Sep 17 00:00:00 2001
From: Theo de Raadt <deraadt@cvs.openbsd.org>
Date: Sat, 15 Dec 2007 03:42:58 +0000
Subject: export kernel uvm_km_pages_free as vm.kmpagesfree; ok tedu, tested
 jsg

---
 sys/uvm/uvm_km.c    | 5 +++--
 sys/uvm/uvm_meter.c | 6 +++++-
 sys/uvm/uvm_param.h | 6 ++++--
 3 files changed, 12 insertions(+), 5 deletions(-)

(limited to 'sys')

diff --git a/sys/uvm/uvm_km.c b/sys/uvm/uvm_km.c
index 9f01d2ac560..002455a97df 100644
--- a/sys/uvm/uvm_km.c
+++ b/sys/uvm/uvm_km.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: uvm_km.c,v 1.65 2007/12/11 15:05:45 tedu Exp $	*/
+/*	$OpenBSD: uvm_km.c,v 1.66 2007/12/15 03:42:57 deraadt Exp $	*/
 /*	$NetBSD: uvm_km.c,v 1.42 2001/01/14 02:10:01 thorpej Exp $	*/
 
 /* 
@@ -744,6 +744,8 @@ uvm_km_free_poolpage1(struct vm_map *map, vaddr_t addr)
 #endif /* __HAVE_PMAP_DIRECT */
 }
 
+int uvm_km_pages_free; /* number of pages currently on free list */
+
 #if defined(__HAVE_PMAP_DIRECT)
 /*
  * uvm_km_page allocator, __HAVE_PMAP_DIRECT arch
@@ -785,7 +787,6 @@ uvm_km_putpage(void *v)
 
 struct mutex uvm_km_mtx;
 int uvm_km_pages_lowat; /* allocate more when reserve drops below this */
-int uvm_km_pages_free; /* number of pages currently on free list */
 struct km_page {
 	struct km_page *next;
 } *uvm_km_pages_head;
diff --git a/sys/uvm/uvm_meter.c b/sys/uvm/uvm_meter.c
index 007921d85a2..80291539872 100644
--- a/sys/uvm/uvm_meter.c
+++ b/sys/uvm/uvm_meter.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: uvm_meter.c,v 1.23 2007/10/10 15:53:53 art Exp $	*/
+/*	$OpenBSD: uvm_meter.c,v 1.24 2007/12/15 03:42:57 deraadt Exp $	*/
 /*	$NetBSD: uvm_meter.c,v 1.21 2001/07/14 06:36:03 matt Exp $	*/
 
 /*
@@ -137,6 +137,7 @@ uvm_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
 	struct vmtotal vmtotals;
 	int rv, t;
 	struct _ps_strings _ps = { PS_STRINGS };
+	extern int uvm_km_pages_free;
 
 	switch (name[0]) {
 	case VM_SWAPENCRYPT:
@@ -218,6 +219,9 @@ uvm_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
 	case VM_USPACE:
 		return (sysctl_rdint(oldp, oldlenp, newp, USPACE));
 
+	case VM_KMPAGESFREE:
+		return (sysctl_rdint(oldp, oldlenp, newp, uvm_km_pages_free));
+
 	default:
 		return (EOPNOTSUPP);
 	}
diff --git a/sys/uvm/uvm_param.h b/sys/uvm/uvm_param.h
index 788539aea56..91e41bf2013 100644
--- a/sys/uvm/uvm_param.h
+++ b/sys/uvm/uvm_param.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: uvm_param.h,v 1.12 2007/03/26 08:43:34 art Exp $	*/
+/*	$OpenBSD: uvm_param.h,v 1.13 2007/12/15 03:42:57 deraadt Exp $	*/
 /*	$NetBSD: uvm_param.h,v 1.5 2001/03/09 01:02:12 chs Exp $	*/
 
 /* 
@@ -112,7 +112,8 @@ typedef int	boolean_t;
 #define	VM_VNODEMIN	9
 #define	VM_MAXSLP	10
 #define	VM_USPACE	11
-#define	VM_MAXID	12		/* number of valid vm ids */
+#define	VM_KMPAGESFREE	12
+#define	VM_MAXID	13		/* number of valid vm ids */
 
 #define	CTL_VM_NAMES { \
 	{ 0, 0 }, \
@@ -127,6 +128,7 @@ typedef int	boolean_t;
 	{ "vnodemin", CTLTYPE_INT }, \
 	{ "maxslp", CTLTYPE_INT }, \
 	{ "uspace", CTLTYPE_INT }, \
+	{ "kmpagesfree", CTLTYPE_INT }, \
 }
 
 struct _ps_strings {
-- 
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