procwired() should must return on the correct mach

Reference: /n/atom/patch/applied2013/wiredsched
Date: Sun Dec 29 22:26:23 CET 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/src/nix/port/devproc.c	Sun Dec 29 22:25:48 2013
+++ /sys/src/nix/port/devproc.c	Sun Dec 29 22:25:48 2013
@@ -1552,7 +1552,6 @@
 		break;
 	case CMwired:
 		procwired(p, atoi(cb->f[1]));
-		sched();
 		break;
 	case CMtrace:
 		switch(cb->nf){
--- /sys/src/nix/port/proc.c	Sun Dec 29 22:25:48 2013
+++ /sys/src/nix/port/proc.c	Sun Dec 29 22:25:48 2013
@@ -394,7 +394,7 @@
 {
 	int fairshare, n, load, ratio;
 
-	load = MACHP(0)->load;
+	load = sys->machptr[0]->load;
 	if(load == 0)
 		return p->basepri;
 
@@ -853,6 +853,9 @@
 		if(up->seg[i])
 			up->seg[i]->color = up->color;
 	qunlock(&up->seglock);
+
+	while(m->machno != bm)
+		sched();
 }
 
 void