From 54f5cf33fcbe413600625d19bc10a293403c16de Mon Sep 17 00:00:00 2001
From: grehan <grehan@FreeBSD.org>
Date: Wed, 11 Feb 2004 04:42:48 +0000
Subject: Add sysctl hw.uma_mdpages to track how many pages have been allocated
 by UMA_MD_SMALL_ALLOC

---
 sys/powerpc/aim/uma_machdep.c     | 9 +++++++++
 sys/powerpc/powerpc/uma_machdep.c | 9 +++++++++
 2 files changed, 18 insertions(+)

(limited to 'sys/powerpc')

diff --git a/sys/powerpc/aim/uma_machdep.c b/sys/powerpc/aim/uma_machdep.c
index 4d58af8..b471957 100644
--- a/sys/powerpc/aim/uma_machdep.c
+++ b/sys/powerpc/aim/uma_machdep.c
@@ -28,9 +28,11 @@
 __FBSDID("$FreeBSD$");
 
 #include <sys/param.h>
+#include <sys/kernel.h>
 #include <sys/lock.h>
 #include <sys/mutex.h>
 #include <sys/systm.h>
+#include <sys/sysctl.h>
 #include <vm/vm.h>
 #include <vm/vm_page.h>
 #include <vm/vm_pageout.h>
@@ -38,6 +40,10 @@ __FBSDID("$FreeBSD$");
 #include <vm/uma_int.h>
 #include <machine/vmparam.h>
 
+static int hw_uma_mdpages;
+SYSCTL_INT(_hw, OID_AUTO, uma_mdpages, CTLFLAG_RD, &hw_uma_mdpages, 0,
+	   "UMA MD pages in use");
+
 void *
 uma_small_alloc(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
 {
@@ -67,6 +73,8 @@ uma_small_alloc(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
 	va = (void *) VM_PAGE_TO_PHYS(m);
 	if ((wait & M_ZERO) && (m->flags & PG_ZERO) == 0)
 		bzero(va, PAGE_SIZE);
+	atomic_add_int(&hw_uma_mdpages, 1);
+
 	return (va);
 }
 
@@ -79,4 +87,5 @@ uma_small_free(void *mem, int size, u_int8_t flags)
 	vm_page_lock_queues();
 	vm_page_free(m);
 	vm_page_unlock_queues();
+	atomic_subtract_int(&hw_uma_mdpages, 1);
 }
diff --git a/sys/powerpc/powerpc/uma_machdep.c b/sys/powerpc/powerpc/uma_machdep.c
index 4d58af8..b471957 100644
--- a/sys/powerpc/powerpc/uma_machdep.c
+++ b/sys/powerpc/powerpc/uma_machdep.c
@@ -28,9 +28,11 @@
 __FBSDID("$FreeBSD$");
 
 #include <sys/param.h>
+#include <sys/kernel.h>
 #include <sys/lock.h>
 #include <sys/mutex.h>
 #include <sys/systm.h>
+#include <sys/sysctl.h>
 #include <vm/vm.h>
 #include <vm/vm_page.h>
 #include <vm/vm_pageout.h>
@@ -38,6 +40,10 @@ __FBSDID("$FreeBSD$");
 #include <vm/uma_int.h>
 #include <machine/vmparam.h>
 
+static int hw_uma_mdpages;
+SYSCTL_INT(_hw, OID_AUTO, uma_mdpages, CTLFLAG_RD, &hw_uma_mdpages, 0,
+	   "UMA MD pages in use");
+
 void *
 uma_small_alloc(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
 {
@@ -67,6 +73,8 @@ uma_small_alloc(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
 	va = (void *) VM_PAGE_TO_PHYS(m);
 	if ((wait & M_ZERO) && (m->flags & PG_ZERO) == 0)
 		bzero(va, PAGE_SIZE);
+	atomic_add_int(&hw_uma_mdpages, 1);
+
 	return (va);
 }
 
@@ -79,4 +87,5 @@ uma_small_free(void *mem, int size, u_int8_t flags)
 	vm_page_lock_queues();
 	vm_page_free(m);
 	vm_page_unlock_queues();
+	atomic_subtract_int(&hw_uma_mdpages, 1);
 }
-- 
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