Rip some well duplicated code out of cpu_wait() and cpu_exit() and move

it to the MI area.  KSE touched cpu_wait() which had the same change
replicated five ways for each platform.  Now it can just do it once.
The only MD parts seemed to be dealing with fpu state cleanup and things
like vm86 cleanup on x86.  The rest was identical.

XXX: ia64 and powerpc did not have cpu_throw(), so I've put a functional
stub in place.

Reviewed by:	jake, tmm, dillon

1 files changed, 1 insertions, 27 deletions

diff --git a/sys/alpha/alpha/vm_machdep.c b/sys/alpha/alpha/vm_machdep.c
index a40ea11b4507..0aec8077b4a6 100644
--- a/sys/alpha/alpha/vm_machdep.c
+++ b/sys/alpha/alpha/vm_machdep.c
@@ -241,40 +241,14 @@ void
 cpu_exit(p)
 	register struct proc *p;
 {
-	alpha_fpstate_drop(p);
-
-	PROC_LOCK(p);
-	mtx_lock_spin(&sched_lock);
-	while (mtx_owned(&Giant))
-		mtx_unlock_flags(&Giant, MTX_NOSWITCH);
-
-	/*
-	 * We have to wait until after releasing all locks before
-	 * changing p_stat.  If we block on a mutex then we will be
-	 * back at SRUN when we resume and our parent will never
-	 * harvest us.
-	 */
-	p->p_stat = SZOMB;
 
-	wakeup(p->p_pptr);
-	PROC_UNLOCK_NOSWITCH(p);
-
-	cnt.v_swtch++;
-	cpu_switch();
-	panic("cpu_exit");
+	alpha_fpstate_drop(p);
 }
 
 void
 cpu_wait(p)
 	struct proc *p;
 {
-	GIANT_REQUIRED;
-	
-	/* drop per-process resources */
-	pmap_dispose_proc(p);
-
-	/* and clean-out the vmspace */
-	vmspace_free(p->p_vmspace);
 }
 
 /*