2 files changed, 12 insertions(+), 7 deletions(-)

M carrera/screen.c
M port/proc.c

@@ 586,6 586,7 @@ cursoron(int dolock)
 {
 	Dac *d;
 	Point p;
+	int s;
 
 	p = mousexy();
 


@@ 593,6 594,7 @@ cursoron(int dolock)
 
 	if(dolock)
 		lock(&cursor);
+	s = splhi();
 
 	p.x += 296;		/* adjusted by experiment */
 	p.y += 9;		/* adjusted by experiment */


@@ 603,6 605,7 @@ cursoron(int dolock)
 	d->cr2 = p.y&0xFF;
 	d->cr2 = (p.y>>8)&0xF;
 
+	splx(s);
 	if(dolock)
 		unlock(&cursor);
 	return 0;

@@ 30,7 30,6 @@ typedef struct
 } Schedq;
 
 int	nrdy;
-int	lastreadied;
 Schedq	runq[Nrq];
 
 char *statename[] =


@@ 122,11 121,16 @@ anyready(void)
 int
 anyhigher(void)
 {
-	int x;
+	Schedq *rq;
+
+	if(nrdy == 0)
+		return 0;
 
-	x = lastreadied;
-	lastreadied = 0;
-	return nrdy && x >= up->priority;
+	for(rq = &runq[Nrq-1]; rq > &runq[up->priority]; rq--)
+		if(rq->head != nil)
+			return 1;
+	
+	return 0;
 }
 
 enum


@@ 177,8 181,6 @@ ready(Proc *p)
 	nrdy++;
 	p->readytime = m->ticks;
 	p->state = Ready;
-	if(p->priority > lastreadied)
-		lastreadied = p->priority;
 	unlock(runq);
 	splx(s);
 }