Module Name: src
Committed By: skrll
Date: Sat May 3 06:55:05 UTC 2014
Modified Files:
src/sys/arch/mips/mips: pmap.c
Log Message:
Grab pv_list lock in pmap_unmap_ephemeral_page only when needed.
To generate a diff of this commit:
cvs rdiff -u -r1.210 -r1.211 src/sys/arch/mips/mips/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/mips/mips/pmap.c
diff -u src/sys/arch/mips/mips/pmap.c:1.210 src/sys/arch/mips/mips/pmap.c:1.211
--- src/sys/arch/mips/mips/pmap.c:1.210 Wed Apr 23 20:57:15 2014
+++ src/sys/arch/mips/mips/pmap.c Sat May 3 06:55:04 2014
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.c,v 1.210 2014/04/23 20:57:15 skrll Exp $ */
+/* $NetBSD: pmap.c,v 1.211 2014/05/03 06:55:04 skrll Exp $ */
/*-
* Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
@@ -67,7 +67,7 @@
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.210 2014/04/23 20:57:15 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.211 2014/05/03 06:55:04 skrll Exp $");
/*
* Manages physical address maps.
@@ -453,8 +453,8 @@ pmap_unmap_ephemeral_page(struct vm_page
struct vm_page_md * const md = VM_PAGE_TO_MD(pg);
pv_entry_t pv = &md->pvh_first;
- (void)PG_MD_PVLIST_LOCK(md, false);
if (MIPS_CACHE_VIRTUAL_ALIAS) {
+ (void)PG_MD_PVLIST_LOCK(md, false);
if (PG_MD_CACHED_P(md)
|| (pv->pv_pmap != NULL
&& mips_cache_badalias(pv->pv_va, va))) {
@@ -466,8 +466,8 @@ pmap_unmap_ephemeral_page(struct vm_page
*/
mips_dcache_wbinv_range(va, PAGE_SIZE);
}
+ PG_MD_PVLIST_UNLOCK(md);
}
- PG_MD_PVLIST_UNLOCK(md);
#ifndef _LP64
/*
* If we had to map using a page table entry, unmap it now.
