Re: [PATCH] Add SA_PERCPU_IRQ flag support

[Matthew Wilcox]

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
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