linux-kernel - Re: [PATCH 5/5] irq: move irq_desc according to smp

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Date:	Mon, 8 Dec 2008 11:18:01 -0800
From:	"Yinghai Lu" <yinghai@...nel.org>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	"Thomas Gleixner" <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] irq: move irq_desc according to smp_affinity v5

On Mon, Dec 8, 2008 at 5:42 AM, Ingo Molnar <mingo@...e.hu> wrote:
>
>>                       mask_ack_irq(desc, irq);
>> +#ifdef CONFIG_MOVE_IRQ_DESC
>> +                     /* get new one */
>> +                     desc = irq_to_desc(irq);
>> +#endif
>
> this patch adds a ton of #ifdefs to important .c files, which could all
> have been avoided by introducing a new method:
>
>        desc = irq_remap_to_desc(irq, desc);
>
> which would do something like:
>
>  static struct irq_desc *
>  irq_remap_to_desc(unsigned int irq, struct irq_desc *desc)
>  {
>  #ifdef CONFIG_MOVE_IRQ_DESC
>        return irq_to_desc(irq);
>  #else
>        return desc;
>  #endif
>  }
>
> right?

yes. will work on it.

YH
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