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SubjectRe: getting timestamp of last interrupt?

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.

HTH,

Karim
--
Author, Speaker, Developer, Consultant
Pushing Embedded and Real-Time Linux Systems Beyond the Limits
http://www.opersys.com || karim@opersys.com || 514-812-4145
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