linux-kernel - Re: [PATCH] mfd: speedup twl4030 irq response time and decrease irq disable time

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Message-ID: <20100928042416.GA9359@opensource.wolfsonmicro.com>
Date:	Mon, 27 Sep 2010 21:24:18 -0700
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Ming Lei <tom.leiming@...il.com>
Cc:	Samuel Ortiz <sameo@...ux.intel.com>, linux-omap@...r.kernel.org,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Balaji T K <balajitk@...com>, Rajendra Nayak <rnayak@...com>,
	Kevin Hilman <khilman@...prootsystems.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mfd: speedup twl4030 irq response time and decrease
 irq disable time

On Tue, Sep 28, 2010 at 08:25:24AM +0800, Ming Lei wrote:
> 2010/9/27 Samuel Ortiz <sameo@...ux.intel.com>:

> > Wouldn't converting your twl4030_irq_thread() to the threaded IRQ framework
> > fix that problem ?

> IRQ_DISABLED flag is set by disable_irq_nosync called from PIH handler,
> then thread function can't be executed in irq thread function, so we can't
> convert this to threaded IRQ framework simply.

Have you raised this issue with the genirq guys?  This sounds like
something that the core infrastructure should be able to cope with.
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