Re: getting timestamp of last interrupt?

[Hans-Georg Thien <1682-600@onlinehome.de>]

Karim Yaghmour wrote:

> 
> Hans-Georg Thien wrote:
> 
>> I am looking for a possibility to read out the last timestamp when an 
>> interrupt has occured.
>>
>> e.g.: the user presses a key on the keyboard. Where can I read out the 
>> timestamp of this event?
>>
>> To be more precise, I 'm looking for
>>
>> ( )a function call
>> ( ) a callback where I can register to be notified when an event occurs
>> ( ) a global accessible variable
>> ( ) a /proc entry
>>
>> or something like that.
>>
>> Any ideas ?
> 
> 
> Have a look at the Linux Trace Toolkit:
> http://www.opersys.com/LTT/
> It records micro-second time-stamps for quite a few events, including
> interrupts.
> 
thanke a lot for reply Karim,

but I think that LTT does not fit to my needs. It needs to modify the
kernel - and that is what I want to avoid.

I'm looking for a already existing built-in capability.

Maybe signal SIGIO is a solution, if it  does not

(x) give me *every* IO event
(x) has to much overhead - I have to respond to keyboard/mouse events, *not*
     disk events
     grafic card events
     eth event
     etc. ...


- Hans