linux-kernel - Re: [patch 0/3] [patch 0/3] genirq: Suppress resend of level interrupts

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Message-ID: <4bacf17f0708140008v657f5d5bqec17fcea67a6f69c@mail.gmail.com>
Date:	Tue, 14 Aug 2007 09:08:59 +0200
From:	"Marcin Ślusarz" <marcin.slusarz@...il.com>
To:	"Thomas Gleixner" <tglx@...utronix.de>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"Ingo Molnar" <mingo@...e.hu>, "Stable Team" <stable@...nel.org>,
	"Benjamin Herrenschmidt" <benh@...nel.crashing.org>,
	"Jean-Baptiste Vignaud" <vignaud@...dmail.fr>,
	"Jarek Poplawski" <jarkao2@...pl>
Subject: Re: [patch 0/3] [patch 0/3] genirq: Suppress resend of level interrupts

2007/8/12, Thomas Gleixner <tglx@...utronix.de>:
> The delayed irq disable functionality introduced a bug due to
> retriggering level type interrupts in case of the delayed disable. The
> resulting problem was discussed and debugged here:
> http://marc.info/?l=linux-kernel&m=118202978609968&w=2
>
> The resend of a level type interrupt is unnessecary and adds extra
> noise to the system. Level type interrupts are resent by hardware when
> they are still active at irq_enable(). The hard-/soft-ware resend is
> only useful for edge type interrupts.
>
> The following patch series addresses the problem and fixes an
> unnoticed mismerge which affects the same area as well.
>
>         tglx
>
Works fine for me (tested on 2.6.22.1). I uploaded 6 GB of data and my
network card didn't time out. (it usually did after 1-100 MB)
Is this the final version?

Regards,
Marcin Slusarz
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