Re: [patch 0/2] Run interrupt handlers always with interrupts disabled
[Posted March 30, 2010 by corbet]
| From: |
| Russell King <rmk-AT-arm.linux.org.uk> |
| To: |
| Thomas Gleixner <tglx-AT-linutronix.de>, Nicolas Pitre <nico-AT-fluxnic.net> |
| Subject: |
| Re: [patch 0/2] Run interrupt handlers always with interrupts disabled |
| Date: |
| Fri, 26 Mar 2010 08:14:57 +0000 |
| Cc: |
| Linus Torvalds <torvalds-AT-osdl.org>,
LKML <linux-kernel-AT-vger.kernel.org>, linux-arch-AT-vger.kernel.org,
Andrew Morton <akpm-AT-linux-foundation.org>,
Ingo Molnar <mingo-AT-elte.hu>,
Peter Zijlstra <peterz-AT-infradead.org>,
Alan Cox <alan-AT-lxorguk.ukuu.org.uk>,
Andi Kleen <andi-AT-firstfloor.org>,
David Miller <davem-AT-davemloft.net>,
Greg Kroah-Hartman <gregkh-AT-suse.de>,
Arnaldo Carvalho de Melo <acme-AT-redhat.com> |
| Archive-link: |
| Article, Thread
|
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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