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Date: Thu, 30 Jun 2011 08:13:21 -0700
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Arnd Bergmann <arnd@arndb.de>, linux-arch@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] asm-generic: Raise default NR_IRQS when using sparse IRQs
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On Thu, Jun 30, 2011 at 09:27:20AM +0200, Thomas Gleixner wrote:
> On Wed, 29 Jun 2011, Mark Brown wrote:

> > Rather than have each platform using sparse IRQs pick a suitably large
> > NR_IRQS for use with sparse IRQs make the default high when they are
> > enabled.  We pick 64k as there is still a bitmap of IRQs that is
> > allocated statically, and as we all know 64k should be enough for
> > anyone.

> The sparse bitmap is overallocated to NR_IRQS + 8k anyway, so that's
> rather pointless.

Hrm, OK.  In that case why are platforms faffing around trying to size
NR_IRQs in the first place?