Re: [PATCH] Add SA_PERCPU_IRQ flag support

From: Dimitri Sivanich
Date: Mon Mar 20 2006 - 09:23:10 EST


On Mon, Mar 20, 2006 at 07:22:07AM -0700, Matthew Wilcox wrote:
> On Mon, Mar 20, 2006 at 08:17:47AM -0600, Dimitri Sivanich wrote:
> > On Sat, Mar 18, 2006 at 01:49:00AM -0800, Andrew Morton wrote:
> > > Andrew Morton <akpm@xxxxxxxx> wrote:
> > > >
> > > > +#ifdef ARCH_HAS_IRQ_PER_CPU
> > > > + if (new->flags & SA_PERCPU_IRQ)
> > > > + desc->status |= IRQ_PER_CPU;
> > > > +#endif
> > >
> > > OK, five architectures define ARCH_HAS_IRQ_PER_CPU but only one of them
> > > defines SA_PERCPU_IRQ. Giving up.
> >
> > Could we do the following (at least for now)?:
> >
> > +#if defined(ARCH_HAS_IRQ_PER_CPU) && defined(SA_PERCPU_IRQ)
> > + if (new->flags & SA_PERCPU_IRQ)
> > + desc->status |= IRQ_PER_CPU;
> > +#endif
>
> Why not just
>
> #ifdef SA_PERCPU_IRQ
> if (new->flags & SA_PERCPU_IRQ)
> desc->status |= IRQ_PER_CPU;
> #endif

Fine with me. I was simply maintaining the ARCH_HAS_IRQ_PER_CPU convention.
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