From: aoyama <aoyama@openbsd.org>
Date: Tue, 23 Dec 2014 10:59:29 +0000 (+0000)
Subject: We do not need to grab the kernel lock for clock interrupts on luna88k,
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=117831e14307241d7d271533fec6233610889fad;p=openbsd

We do not need to grab the kernel lock for clock interrupts on luna88k,
as same as aviion.

suggested and ok miod@
---

diff --git a/sys/arch/luna88k/luna88k/machdep.c b/sys/arch/luna88k/luna88k/machdep.c
index 3d6c42c8753..15401748ae8 100644
--- a/sys/arch/luna88k/luna88k/machdep.c
+++ b/sys/arch/luna88k/luna88k/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.114 2014/12/10 15:29:53 mikeb Exp $	*/
+/*	$OpenBSD: machdep.c,v 1.115 2014/12/23 10:59:29 aoyama Exp $	*/
 /*
  * Copyright (c) 1998, 1999, 2000, 2001 Steve Murphree, Jr.
  * Copyright (c) 1996 Nivas Madhur
@@ -832,10 +832,6 @@ luna88k_ext_int(struct trapframe *eframe)
 		goto out;
 #endif
 
-#ifdef MULTIPROCESSOR
-	if (old_spl < IPL_SCHED)
-		__mp_lock(&kernel_lock);
-#endif
 	/*
 	 * Service the highest interrupt, in order.
 	 */
@@ -857,9 +853,13 @@ luna88k_ext_int(struct trapframe *eframe)
 		case 3:
 #ifdef MULTIPROCESSOR
 			if (CPU_IS_PRIMARY(ci)) {
+				if (old_spl < IPL_SCHED)
+					__mp_lock(&kernel_lock);
 #endif
 				isrdispatch_autovec(cur_int_level);
 #ifdef MULTIPROCESSOR
+				if (old_spl < IPL_SCHED)
+					__mp_unlock(&kernel_lock);
 			}
 #endif
 			break;
@@ -873,11 +873,6 @@ luna88k_ext_int(struct trapframe *eframe)
 		cur_int_level = cur_isr >> 29;
 	} while (cur_int_level != 0);
 
-#ifdef MULTIPROCESSOR
-	if (old_spl < IPL_SCHED)
-		__mp_unlock(&kernel_lock);
-#endif
-
 out:
 	/*
 	 * process any remaining data access exceptions before