[src/uebayasi-xip]: src/sys/uvm Make struct vm_page_md * -> struct vm_page_md...

[uebayasi <uebayasi%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/cf0accb04c2a
branches:  uebayasi-xip
changeset: 751594:cf0accb04c2a
user:      uebayasi <uebayasi%NetBSD.org@localhost>
date:      Tue Feb 23 08:46:17 2010 +0000

description:
Make struct vm_page_md * -> struct vm_page_md * lookup a real function and
hide its internal.  Won't cause much performance loss because results are
usually cached by callers.

diffstat:

 sys/uvm/uvm_page.c |  14 ++++++++++++--
 sys/uvm/uvm_page.h |  10 +++-------
 2 files changed, 15 insertions(+), 9 deletions(-)

diffs (66 lines):

diff -r 0bfe93c4047c -r cf0accb04c2a sys/uvm/uvm_page.c
--- a/sys/uvm/uvm_page.c        Tue Feb 23 07:46:28 2010 +0000
+++ b/sys/uvm/uvm_page.c        Tue Feb 23 08:46:17 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uvm_page.c,v 1.153.2.13 2010/02/23 07:44:25 uebayasi Exp $     */
+/*     $NetBSD: uvm_page.c,v 1.153.2.14 2010/02/23 08:46:17 uebayasi Exp $     */
 
 /*
  * Copyright (c) 1997 Charles D. Cranor and Washington University.
@@ -71,7 +71,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uvm_page.c,v 1.153.2.13 2010/02/23 07:44:25 uebayasi Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uvm_page.c,v 1.153.2.14 2010/02/23 08:46:17 uebayasi Exp $");
 
 #include "opt_ddb.h"
 #include "opt_uvmhist.h"
@@ -1169,6 +1169,16 @@
  * XXX Consider to allocate slots on-demand.
  */
 
+struct vm_page_md *vm_page_device_mdpage_lookup(struct vm_page *);
+
+struct vm_page_md *
+uvm_vm_page_to_md(struct vm_page *pg)
+{
+
+       return uvm_pageisdevice_p(pg) ?
+           vm_page_device_mdpage_lookup(pg) : &pg->mdpage;
+}
+
 struct vm_page_device_mdpage_entry {
        struct vm_page_md mde_mdpage;
        SLIST_ENTRY(vm_page_device_mdpage_entry) mde_hash;
diff -r 0bfe93c4047c -r cf0accb04c2a sys/uvm/uvm_page.h
--- a/sys/uvm/uvm_page.h        Tue Feb 23 07:46:28 2010 +0000
+++ b/sys/uvm/uvm_page.h        Tue Feb 23 08:46:17 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uvm_page.h,v 1.59.2.13 2010/02/23 07:44:25 uebayasi Exp $      */
+/*     $NetBSD: uvm_page.h,v 1.59.2.14 2010/02/23 08:46:17 uebayasi Exp $      */
 
 /*
  * Copyright (c) 1997 Charles D. Cranor and Washington University.
@@ -308,10 +308,6 @@
 struct vm_page *uvm_phys_to_vm_page_device(paddr_t);
 #endif
 
-#ifdef XIP
-struct vm_page_md *vm_page_device_mdpage_lookup(struct vm_page *);
-#endif
-
 /*
  * macros
  */
@@ -324,8 +320,8 @@
 #ifndef XIP
 #define        VM_PAGE_TO_MD(pg)       (&(pg)->mdpage)
 #else
-#define        VM_PAGE_TO_MD(pg) \
-    (uvm_pageisdevice_p(pg) ? vm_page_device_mdpage_lookup(pg) : &(pg)->mdpage)
+struct vm_page_md *uvm_vm_page_to_md(struct vm_page *);
+#define        VM_PAGE_TO_MD(pg)       uvm_vm_page_to_md(pg)
 #endif
 #endif