[src/trunk]: src/sys/arch/sparc64/sparc64 No need to repeat checking want_res...

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

details:   https://anonhg.NetBSD.org/src/rev/960294186f57
branches:  trunk
changeset: 766479:960294186f57
user:      nakayama <nakayama%NetBSD.org@localhost>
date:      Thu Jun 23 13:39:40 2011 +0000

description:
No need to repeat checking want_resched then call preempt() in
T_AST case, so check it only once.

diffstat:

 sys/arch/sparc64/sparc64/trap.c |  8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diffs (34 lines):

diff -r a439a6997b66 -r 960294186f57 sys/arch/sparc64/sparc64/trap.c
--- a/sys/arch/sparc64/sparc64/trap.c   Thu Jun 23 12:40:32 2011 +0000
+++ b/sys/arch/sparc64/sparc64/trap.c   Thu Jun 23 13:39:40 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: trap.c,v 1.165 2011/01/14 02:06:32 rmind Exp $ */
+/*     $NetBSD: trap.c,v 1.166 2011/06/23 13:39:40 nakayama Exp $ */
 
 /*
  * Copyright (c) 1996-2002 Eduardo Horvath.  All rights reserved.
@@ -50,7 +50,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.165 2011/01/14 02:06:32 rmind Exp $");
+__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.166 2011/06/23 13:39:40 nakayama Exp $");
 
 #include "opt_ddb.h"
 #include "opt_multiprocessor.h"
@@ -608,13 +608,13 @@
 #endif
 
        case T_AST:
+               want_ast = 0;
                if (l->l_pflag & LP_OWEUPC) {
                        l->l_pflag &= ~LP_OWEUPC;
                        ADDUPROF(l);
                }
-               while (want_resched)
+               if (want_resched)
                        preempt();
-               want_ast = 0;
                break;
 
        case T_ILLINST: