linux-kernel - Re: [patch 0/2] Run interrupt handlers always with interrupts disabled

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Date:	Fri, 26 Mar 2010 08:14:57 +0000
From:	Russell King <rmk@....linux.org.uk>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Nicolas Pitre <nico@...xnic.net>
Cc:	Linus Torvalds <torvalds@...l.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-arch@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Andi Kleen <andi@...stfloor.org>,
	David Miller <davem@...emloft.net>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [patch 0/2] Run interrupt handlers always with interrupts
	disabled

On Fri, Mar 26, 2010 at 12:06:44AM -0000, Thomas Gleixner wrote:
> The following patch series removes the IRQF_DISABLED functionality
> from the core interrupt code and runs all interrupt handlers with
> interrupts disabled.

As was covered in previous discussions, what about drivers such as
SMC91x which take a long time to retrieve packets from the hardware?
Always running handlers with IRQs disabled will kill things such as
serial on these platforms.

So based on your description, I have no option but to NAK this.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:
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