From 036aced92fa45d63ef648349e436e97556f5150c Mon Sep 17 00:00:00 2001
From: peter <peter@FreeBSD.org>
Date: Fri, 27 Jul 2001 01:08:59 +0000
Subject: Make PMAP_SHPGPERPROC tunable.  One shouldn't need to recompile a
 kernel for this, since it is easy to run into with large systems with lots of
 shared mmap space.

Obtained from:	yahoo
---
 sys/powerpc/aim/mmu_oea.c     | 6 +++++-
 sys/powerpc/powerpc/mmu_oea.c | 6 +++++-
 sys/powerpc/powerpc/pmap.c    | 6 +++++-
 3 files changed, 15 insertions(+), 3 deletions(-)

(limited to 'sys/powerpc')

diff --git a/sys/powerpc/aim/mmu_oea.c b/sys/powerpc/aim/mmu_oea.c
index b7f2d05..cc28d4b 100644
--- a/sys/powerpc/aim/mmu_oea.c
+++ b/sys/powerpc/aim/mmu_oea.c
@@ -62,6 +62,7 @@ static const char rcsid[] =
 
 #include <sys/param.h>
 #include <sys/systm.h>
+#include <sys/kernel.h>
 #include <sys/proc.h>
 #include <sys/malloc.h>
 #include <sys/msgbuf.h>
@@ -1639,7 +1640,10 @@ pmap_growkernel(vm_offset_t addr)
 void
 pmap_init2()
 {
-	pv_entry_max = PMAP_SHPGPERPROC * maxproc + vm_page_array_size;
+	int shpgperproc = PMAP_SHPGPERPROC;
+
+	TUNABLE_INT_FETCH("vm.pmap.shpgperproc", &shpgperproc);
+	pv_entry_max = shpgperproc * maxproc + vm_page_array_size;
 	pv_entry_high_water = 9 * (pv_entry_max / 10);
 	zinitna(pvzone, &pvzone_obj, NULL, 0, pv_entry_max, ZONE_INTERRUPT, 1);
 }
diff --git a/sys/powerpc/powerpc/mmu_oea.c b/sys/powerpc/powerpc/mmu_oea.c
index b7f2d05..cc28d4b 100644
--- a/sys/powerpc/powerpc/mmu_oea.c
+++ b/sys/powerpc/powerpc/mmu_oea.c
@@ -62,6 +62,7 @@ static const char rcsid[] =
 
 #include <sys/param.h>
 #include <sys/systm.h>
+#include <sys/kernel.h>
 #include <sys/proc.h>
 #include <sys/malloc.h>
 #include <sys/msgbuf.h>
@@ -1639,7 +1640,10 @@ pmap_growkernel(vm_offset_t addr)
 void
 pmap_init2()
 {
-	pv_entry_max = PMAP_SHPGPERPROC * maxproc + vm_page_array_size;
+	int shpgperproc = PMAP_SHPGPERPROC;
+
+	TUNABLE_INT_FETCH("vm.pmap.shpgperproc", &shpgperproc);
+	pv_entry_max = shpgperproc * maxproc + vm_page_array_size;
 	pv_entry_high_water = 9 * (pv_entry_max / 10);
 	zinitna(pvzone, &pvzone_obj, NULL, 0, pv_entry_max, ZONE_INTERRUPT, 1);
 }
diff --git a/sys/powerpc/powerpc/pmap.c b/sys/powerpc/powerpc/pmap.c
index b7f2d05..cc28d4b 100644
--- a/sys/powerpc/powerpc/pmap.c
+++ b/sys/powerpc/powerpc/pmap.c
@@ -62,6 +62,7 @@ static const char rcsid[] =
 
 #include <sys/param.h>
 #include <sys/systm.h>
+#include <sys/kernel.h>
 #include <sys/proc.h>
 #include <sys/malloc.h>
 #include <sys/msgbuf.h>
@@ -1639,7 +1640,10 @@ pmap_growkernel(vm_offset_t addr)
 void
 pmap_init2()
 {
-	pv_entry_max = PMAP_SHPGPERPROC * maxproc + vm_page_array_size;
+	int shpgperproc = PMAP_SHPGPERPROC;
+
+	TUNABLE_INT_FETCH("vm.pmap.shpgperproc", &shpgperproc);
+	pv_entry_max = shpgperproc * maxproc + vm_page_array_size;
 	pv_entry_high_water = 9 * (pv_entry_max / 10);
 	zinitna(pvzone, &pvzone_obj, NULL, 0, pv_entry_max, ZONE_INTERRUPT, 1);
 }
-- 
cgit v1.1