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kernel: improve nlocks print in sleep()

--- a/sys/src/9/port/proc.c

+++ b/sys/src/9/port/proc.c

@@ -818,15 +818,18 @@

 	int s;

 	void (*pt)(Proc*, int, vlong);

-	s = splhi();

-

 	if(up->nlocks)

-		print("process %lud sleeps with %d locks held, last lock %#p locked at pc %#p, sleep called from %#p\n",

-			up->pid, up->nlocks, up->lastlock, up->lastlock->pc, getcallerpc(&r));

+		print("process %s %lud sleeps with %d locks held, "

+			"last lock %#p locked at pc %#p, sleep called from %#p\n",

+			up->text, up->pid, up->nlocks,

+			up->lastlock, up->lastlock->pc, getcallerpc(&r));

+

+	s = splhi();

 	lock(r);

 	lock(&up->rlock);

 	if(r->p != nil){

-		print("double sleep called from %#p, %lud %lud\n", getcallerpc(&r), r->p->pid, up->pid);

+		iprint("double sleep called from %#p, %s %lud -> %s %lud\n",

+			getcallerpc(&r), r->p->text, r->p->pid, up->text, up->pid);

 		dumpstack();

 	}

-- 

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