Changes to exit handling.

cpu_exit no longer frees the vmspace and u-area. This is now handled by a
separate kernel thread "reaper". This is to avoid sleeping locks in the
critical path of cpu_exit where we're not allowed to sleep.

From NetBSD

2 files changed, 6 insertions, 9 deletions

diff --git a/sys/arch/mac68k/mac68k/locore.s b/sys/arch/mac68k/mac68k/locore.s
index efe1f0d149a..7e062a830b4 100644
--- a/sys/arch/mac68k/mac68k/locore.s
+++ b/sys/arch/mac68k/mac68k/locore.s
@@ -1,4 +1,4 @@
-/*	$OpenBSD: locore.s,v 1.22 1999/01/20 13:31:16 niklas Exp $	*/
+/*	$OpenBSD: locore.s,v 1.23 2000/06/05 11:02:59 art Exp $	*/
 /*	$NetBSD: locore.s,v 1.74 1997/02/02 08:17:46 thorpej Exp $	*/
 
 /*
@@ -1232,12 +1232,10 @@ ENTRY(switch_exit)
 	movl	#nullpcb,_curpcb	| save state into garbage pcb
 	lea	tmpstk,sp		| goto a tmp stack
 
-	/* Free old process's user area. */
-	movl	#USPACE,sp@-		| size of u-area
-	movl	a0@(P_ADDR),sp@-	| address of process's u-area
-	movl	_kernel_map,sp@-	| map it was allocated in
-	jbsr	_kmem_free		| deallocate it
-	lea	sp@(12),sp		| pop args
+        /* Schedule the vmspace and stack to be freed. */
+	movl    a0,sp@-                 | exit2(p)
+	jbsr    _C_LABEL(exit2)
+	lea     sp@(4),sp               | pop args
 
 	jra	_cpu_switch
 
diff --git a/sys/arch/mac68k/mac68k/vm_machdep.c b/sys/arch/mac68k/mac68k/vm_machdep.c
index 82e722ca7c5..e89a7fe0a9a 100644
--- a/sys/arch/mac68k/mac68k/vm_machdep.c
+++ b/sys/arch/mac68k/mac68k/vm_machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: vm_machdep.c,v 1.15 1999/10/10 18:29:22 art Exp $	*/
+/*	$OpenBSD: vm_machdep.c,v 1.16 2000/06/05 11:03:00 art Exp $	*/
 /*	$NetBSD: vm_machdep.c,v 1.21 1996/09/16 18:00:31 scottr Exp $	*/
 
 /*
@@ -153,7 +153,6 @@ volatile void
 cpu_exit(p)
 	struct proc *p;
 {
-	vmspace_free(p->p_vmspace);
 
 	(void) splhigh();
 	cnt.v_swtch++;