lkml.org 
[lkml]   [2008]   [Dec]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: when interrupt came, the kernel save pt_regs->eip always the same?
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


\
 
 \ /
  Last update: 2008-12-13 17:59    [W:0.079 / U:0.128 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site