Module Name: src
Committed By: ad
Date: Sun Dec 1 14:30:01 UTC 2019
Modified Files:
src/sys/uvm: uvm_fault.c
Log Message:
Deactivate pages in batch instead of acquiring uvm_pageqlock repeatedly.
To generate a diff of this commit:
cvs rdiff -u -r1.210 -r1.211 src/sys/uvm/uvm_fault.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/uvm/uvm_fault.c
diff -u src/sys/uvm/uvm_fault.c:1.210 src/sys/uvm/uvm_fault.c:1.211
--- src/sys/uvm/uvm_fault.c:1.210 Sun Dec 1 10:19:59 2019
+++ src/sys/uvm/uvm_fault.c Sun Dec 1 14:30:01 2019
@@ -1,4 +1,4 @@
-/* $NetBSD: uvm_fault.c,v 1.210 2019/12/01 10:19:59 martin Exp $ */
+/* $NetBSD: uvm_fault.c,v 1.211 2019/12/01 14:30:01 ad Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@@ -32,7 +32,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uvm_fault.c,v 1.210 2019/12/01 10:19:59 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uvm_fault.c,v 1.211 2019/12/01 14:30:01 ad Exp $");
#include "opt_uvmhist.h"
@@ -191,19 +191,19 @@ uvmfault_anonflush(struct vm_anon **anon
int lcv;
struct vm_page *pg;
+ mutex_enter(&uvm_pageqlock);
for (lcv = 0; lcv < n; lcv++) {
if (anons[lcv] == NULL)
continue;
KASSERT(mutex_owned(anons[lcv]->an_lock));
pg = anons[lcv]->an_page;
if (pg && (pg->flags & PG_BUSY) == 0) {
- mutex_enter(&uvm_pageqlock);
if (pg->wire_count == 0) {
uvm_pagedeactivate(pg);
}
- mutex_exit(&uvm_pageqlock);
}
}
+ mutex_exit(&uvm_pageqlock);
}
/*
