3 files changed, 16 insertions(+), 5 deletions(-)

M port/portdat.h
M port/proc.c
M port/sysproc.c

@@ 579,6 579,7 @@ struct Proc
 	Mach	*mp;		/* machine this process last ran on */
 	ulong	affinity;	/* affinity counter for that mach */
 	ulong	movetime;	/* ticks when proc was last reassigned */
+	ulong	priority;
 
 	void	*ureg;		/* User registers for notes */
 	void	*dbgreg;	/* User registers for devproc */


@@ 689,3 690,4 @@ extern int mouseshifted;
 extern int mousetype;
 extern int mouseswap;
 extern int nsyscall;
+extern Physseg physseg[];

@@ 22,7 22,7 @@ struct
 }waitqalloc;
 
 int	nrdy;
-Schedq	runhiq;
+Schedq	runhiq;		/* for hi priority process, don't bother with affinity */
 
 char *statename[] =
 {			/* BUG: generate automatically */


@@ 113,7 113,9 @@ ready(Proc *p)
 
 	s = splhi();
 
-	if(p->state == Running)
+	if(p->priority)
+		rq = &runhiq;
+	else if(p->state == Running)
 		rq = &balance(p)->loq;
 	else
 		rq = &affinity(p)->hiq;


@@ 140,16 142,18 @@ runproc(void)
 
 loop:
 	spllo();
-	while(m->hiq.head == 0 && m->loq.head == 0)
+	while(runhiq.head == 0 && m->hiq.head == 0 && m->loq.head == 0)
 		;
 	splhi();
 
-	if(m->hiq.head)
+	lock(&runhiq);
+	if(runhiq.head)
+		rq = &runhiq;
+	else if(m->hiq.head)
 		rq = &m->hiq;
 	else
 		rq = &m->loq;
 
-	lock(&runhiq);
 	p = rq->head;
 	/* p->mach==0 only when process state is saved */
 	if(p == 0 || p->mach){	

@@ 380,6 380,11 @@ sysexec(ulong *arg)
 	s->top = USTKTOP;
 	relocateseg(s, USTKTOP-TSTKTOP);
 
+	/*
+	 *  '/' processes are high priority (hack to make /ip more responsive)
+	 */
+	if(devchar[tc->type] == L'/')
+		up->priority = 1;
 	close(tc);
 
 	/*