On Fri, 12 Oct 2007 09:08:58 -0700 "Brandeburg, Jesse" <[EMAIL PROTECTED]> wrote:
> Andi Kleen wrote: > >> When the hw TX queue gains space, the driver self-batches packets > >> from the sw queue to the hw queue. > > > > I don't really see the advantage over the qdisc in that scheme. > > It's certainly not simpler and probably more code and would likely > > also not require less locks (e.g. a currently lockless driver > > would need a new lock for its sw queue). Also it is unclear to me > > it would be really any faster. > > related to this comment, does Linux have a lockless (using atomics) > singly linked list element? That would be very useful in a driver hot > path. Use RCU? or write a generic version and get it reviewed. You really want someone with knowledge of all the possible barrier impacts to review it. -- Stephen Hemminger <[EMAIL PROTECTED]> - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
