linux-kernel - Re: Ctrl+C doesn't interrupt process waiting for I/O

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Message-ID: <20080704221457.1f147225@lxorguk.ukuu.org.uk>
Date:	Fri, 4 Jul 2008 22:14:57 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Joe Peterson <joe@...rush.com>, Elias Oltmanns <eo@...ensachen.de>,
	Török Edwin <edwintorok@...il.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: Ctrl+C doesn't interrupt process waiting for I/O

> Doesn't make sense to me. And yes I see this here regularly and it started
> at some point.

Lets have some profiles and TSC numbers then. I'm happy to believe some
specific combination of hardware/timing shows up a real problem but
looking at the tiny amount of code involved I can see no sane explanation
as to why at this point.

I'm not going to look further into it without real serious data from
people seeing it.
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