[OpenWrt-Devel] Symmetric MultiProcessing broken for IXP4xx arch.

Carlos Ferreira carlosmf.pt at gmail.com
Sat Jul 12 10:51:54 EDT 2014

Yes I know that, but the thing is, for the 3.10 kernel, CONFIG_RPS depends
CONFIG_RPS enables the definition of  real_num_rx_queues field for the
netdev_rx_queue struct (netdevice.h). Netmap requires the existence of the
real_num_rx_queues field. I cannot compile it CONFIG_RPS is not active.
Beyond 3.13 (I think), the real_num_rx_queues field is defined if
CONFIG_SYSFS is defined.

On 12 July 2014 15:40, Felix Fietkau <nbd at openwrt.org> wrote:

> On 2014-07-12 16:29, Carlos Ferreira wrote:
> > I'm having an issue with OpenWRT trunk where it seems
> > that SMP (Symmetric MultiProcessing) is marked as being Broken, for the
> > IXP4xx arch and I'm trying to compile netmap
> > <http://info.iet.unipi.it/~luigi/netmap/> for the Cambria SBC. Netmap
> > requires the kernel to have SMP active.
> > Can anyone tell me if there is a reason for the SMP being broken
> > (incompatibility issues or other reasons)?
> >
> > Thanks for the Info!
> It's not a multiprocessor SoC, so enabling SMP for it makes no sense.
> - Felix


Carlos Miguel Ferreira
Researcher at Telecommunications Institute
Aveiro - Portugal
Work E-mail - cmf at av.it.pt
Skype & GTalk -> carlosmf.pt at gmail.com
LinkedIn -> http://www.linkedin.com/in/carlosmferreira
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