On Sun, Aug 12, 2018 at 11:20 AM Willem de Bruijn
<willemdebruijn.ker...@gmail.com> wrote:
>
> From: Willem de Bruijn <will...@google.com>
>
> The kbuild robot shows build failure on machines without CONFIG_SMP:
>
> drivers/net/virtio_net.c:1916:10: error:
> implicit declaration of function 'cpumask_next_wrap'
>
> cpumask_next_wrap is exported from lib/cpumask.o, which has
>
> lib-$(CONFIG_SMP) += cpumask.o
>
> same as other functions, also define it as static inline in the
> NR_CPUS==1 branch in include/linux/cpumask.h.
>
> If wrap is false, function wraps across the range of valid cpus,
> here [0]. If it is true, it returns nr_cpumask_bits, here 1.
>
> Fixes: 2ca653d607ce ("virtio_net: Stripe queue affinities across cores.")
> Signed-off-by: Willem de Bruijn <will...@google.com>
Sent too hastily. If wrap is true and n == -1, it should still return 0.
Will send a v2.
