linux-kernel - Re: [RFC] genirq: Flush the irq thread on synchronization

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Date:	Wed, 7 Dec 2011 01:28:46 +0200
From:	Ido Yariv <ido@...ery.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [RFC] genirq: Flush the irq thread on synchronization

Hi Thomas,

On Mon, Dec 05, 2011 at 10:55:01PM +0100, Thomas Gleixner wrote:
> Does the following (untested) patch solve your issues?

I briefly tested this patch and it appears to also solve the issues I
mentioned.

I think both solutions would work. The only drawbacks I see in using
this patch over the other one are that this patch involves a bit more
locking in synchronize_irq() and irq_finalize_oneshot() (for non-oneshot
irqs), and that the oneshot mechanism is used for non-oneshot threads.

Thanks,
Ido.
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