Hi! On 15:47 Thu 03 Sep , JiSheng Zhang wrote: > ---------- Forwarded message ---------- > From: JiSheng Zhang <jszhang3@xxxxxxxxx> > Date: 2009/9/3 > Subject: disable_irq in ndo_poll_controller > To: netdev@xxxxxxxxxxxxxxx > > > Hi list, > > I found that there are three disable irq method in nicard drivers > ndo_poll_controller implementation : > 1.disable_irq disable interrupts, crash if they are already disabled > 2.loacle_irq_save disable interrupts, do not crash if they are already disabled > 3.program nicard's register My guess without knowing or having looked at the driver is that it might tell the device to stop sending interrupts. Instead the device may be polled if there is work to do. This reduces the load if the device would otherwise send lots of interrupts. -Michi -- programing a layer 3+4 network protocol for mesh networks see http://michaelblizek.twilightparadox.com -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
