Re: [PATCH 2/5] sky2: add fake idle irq timer

[Stephen Hemminger <shemminger@osdl.org>]

On Tue, 25 Apr 2006 23:23:29 +0200
Francois Romieu <romieu@fr.zoreil.com> wrote:

> Stephen Hemminger <shemminger@osdl.org> :
> [...]
> > --- sky2-2.6.17.orig/drivers/net/sky2.c	2006-04-25 10:48:47.000000000 -0700
> > +++ sky2-2.6.17/drivers/net/sky2.c	2006-04-25 10:53:32.000000000 -0700
> > @@ -2086,6 +2086,20 @@
> >  	}
> >  }
> >  
> > +/* If idle then force a fake soft NAPI poll once a second
> > + * to work around cases where sharing an edge triggered interrupt.
> > + */
> > +static void sky2_idle(unsigned long arg)
> > +{
> > +	struct net_device *dev = (struct net_device *) arg;
> > +
> > +	local_irq_disable();
> > +	if (__netif_rx_schedule_prep(dev))
> > +		__netif_rx_schedule(dev);
> > +	local_irq_enable();
> > +}
> > +
> > +
> >  static int sky2_poll(struct net_device *dev0, int *budget)
> >  {
> >  	struct sky2_hw *hw = ((struct sky2_port *) netdev_priv(dev0))->hw;
> > @@ -2134,6 +2148,8 @@
> >  		sky2_write32(hw, STAT_CTRL, SC_STAT_CLR_IRQ);
> >  	}
> >  
> > +	mod_timer(&hw->idle_timer, jiffies + HZ);
> > +
> >  	local_irq_disable();
> >  	__netif_rx_complete(dev0);
> 
> 
> Any objection against moving mod_timer() from sky2_poll() to sky2_idle()
> so as to keep poll() path unmodified ?
> 

If traffic is moving, then I want the timer to keep getting rescheduled
farther out.