linux-kernel - Re: [PATCH for -tip] proc: remove ifdef CONFIG_SPARSE

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Date:	Thu, 25 Dec 2008 11:59:15 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	Yinghai Lu <yinghai@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH for -tip] proc: remove ifdef CONFIG_SPARSE_IRQ from
	stat.c


* KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> wrote:

> 
> I confirmed by alpha cross compiler.
> 
> ==
> Subject: [PATCH] proc: remove ifdef CONFIG_SPARSE_IRQ from stat.c
> Impact: cleanup
> 
> commit 240d367b4e6c6e3c5075e034db14dba60a6f5fa7 has a bit strange analysis.
> The fact is, irq_desc() can be used old architecuture too. 
> but old code don't include <linux/irq.h>.
> 
> right fixing is here.

> +#include <linux/irq.h>

looks good, but linux/irq.h cannot be included on all architectures. (for 
example s390 has no notion of 'hardirqs'). But we created linux/irqnr.h 
for this purpose - so including that should work better.

	Ingo
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