Hi,
On Sat, Sep 28, 2013 at 10:40:47PM +0200, Richard Weinberger wrote:
> Am 28.09.2013 21:50, schrieb Aaro Koskinen:
> > Currently the driver assumes that CPU 0 is handling all the hard IRQs.
> > This is wrong in Linux SMP systems where user is allowed to assign to
> > hardware IRQs to any CPU. The driver will stop working if user sets
> > smp_affinity so that interrupts end up being handled by other than CPU
> > 0. The patch fixes that.
> >
> > Signed-off-by: Aaro Koskinen <aaro.koskinen@xxxxxx>
> > ---
> > drivers/staging/octeon/ethernet-rx.c | 12 ++++++------
> > 1 file changed, 6 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c
> > index e14a1bb..de831c1 100644
> > --- a/drivers/staging/octeon/ethernet-rx.c
> > +++ b/drivers/staging/octeon/ethernet-rx.c
> > @@ -80,6 +80,8 @@ struct cvm_oct_core_state {
> >
> > static struct cvm_oct_core_state core_state __cacheline_aligned_in_smp;
> >
> > +static int cvm_irq_cpu = -1;
>
> Why are you introducing a new global variable here?
> Can't you pass cvm_irq_cpu as argument to cvm_oct_enable_napi()?
This information needs to be accessed in cvm_oct_no_more_work().
Maybe I'm missing something obvious, but I don't get how the argument
could be accessed in or passed to napi poll routine which is calling
cvm_oct_no_more_work()?
A.
