[src/trunk]: src/sys/arch/sparc/sparc convert xpmsg_lock to IPL_SCHED. the o...

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

details:   https://anonhg.NetBSD.org/src/rev/190929ac9663
branches:  trunk
changeset: 761256:190929ac9663
user:      mrg <mrg%NetBSD.org@localhost>
date:      Sat Jan 22 12:13:25 2011 +0000

description:
convert xpmsg_lock to IPL_SCHED.  the old spl/simple_lock code ran at
splsched(), and this significantly helps with stability under load
when running with multiple active CPUs.

diffstat:

 sys/arch/sparc/sparc/cpu.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 06d279da9169 -r 190929ac9663 sys/arch/sparc/sparc/cpu.c
--- a/sys/arch/sparc/sparc/cpu.c        Sat Jan 22 12:06:51 2011 +0000
+++ b/sys/arch/sparc/sparc/cpu.c        Sat Jan 22 12:13:25 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cpu.c,v 1.224 2011/01/13 05:20:27 mrg Exp $ */
+/*     $NetBSD: cpu.c,v 1.225 2011/01/22 12:13:25 mrg Exp $ */
 
 /*
  * Copyright (c) 1996
@@ -52,7 +52,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.224 2011/01/13 05:20:27 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.225 2011/01/22 12:13:25 mrg Exp $");
 
 #include "opt_multiprocessor.h"
 #include "opt_lockdebug.h"
@@ -521,7 +521,7 @@
 cpu_init_system(void)
 {
 
-       mutex_init(&xpmsg_mutex, MUTEX_SPIN, IPL_VM);
+       mutex_init(&xpmsg_mutex, MUTEX_SPIN, IPL_SCHED);
 }
 
 /*