From: Ralf Baechle <ralf@linux-mips.org>
To: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: linux-mips@linux-mips.org
Subject: Re: [PATCH] Define MIPS_CPU_IRQ_BASE in generic header
Date: Mon, 8 Jan 2007 15:11:11 +0000 [thread overview]
Message-ID: <20070108151111.GB28691@linux-mips.org> (raw)
In-Reply-To: <20070108.021429.78706014.anemo@mba.ocn.ne.jp>
On Mon, Jan 08, 2007 at 02:14:29AM +0900, Atsushi Nemoto wrote:
> The irq_base for {mips,rm7k,rm9k}_cpu_irq_init() are constant on all
> platforms and are same value on most platforms (0 or 16, depends on
> CONFIG_I8259). Define them in asm-mips/mach-generic/irq.h and make
> them customizable. This will save a few cycle on each CPU interrupt.
>
> A good side effect is removing some dependencies to MALTA in generic
> SMTC code.
>
> Although MIPS_CPU_IRQ_BASE is customizable, this patch changes irq
> mappings on DDB5477, EMMA2RH and MIPS_SIM, since really customizing
> them might cause some header dependency problem and there seems no
> good reason to customize it. So currently only VR41XX is using custom
> MIPS_CPU_IRQ_BASE value, which is 0 regardless of CONFIG_I8259.
>
> Testing this patch on those platforms is greatly appreciated. Thank
> you.
Queued for 2.6.21,
Ralf
prev parent reply other threads:[~2007-01-08 15:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-07 17:14 [PATCH] Define MIPS_CPU_IRQ_BASE in generic header Atsushi Nemoto
2007-01-08 15:11 ` Ralf Baechle [this message]
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