Date: Sat, 13 Dec 2008 08:55:55 -0800 (PST)
From: Zwane Mwaikambo <zwane@infradead.org>
To: pl ice <telent997@gmail.com>
cc: linux-kernel@vger.kernel.org
Subject: Re: when interrupt came, the kernel save pt_regs->eip always the
 same?
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On Sat, 13 Dec 2008, pl ice wrote:

> HI,
>     These day i wanted get cpu context ,when interrupt came.BUT i
> found when interrupt came kernel saved cpu context in struct pt_regs
> and delivered to do_IRQ ,and i print the pt_regs->eip,they alway same
> on the same interrupt?
>      The interrupt can come anytime,i think the eip will be very
> different every time.BUT i debug kernel ,print eip in the function
> do_IRQ,found it didn't run as i thought.Can anybody tell me why?

If the cpu is idle, you have a higher probability that the idle function 
is in regs->eip

	Zwane
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