Interfacing user application and interrupt.
wd at denx.de
Sat Jul 21 21:45:31 EST 2001
In message <20010721101345.5964.qmail at web20104.mail.yahoo.com> you wrote:
> I also have ppc linux interrupt handler that correctly
> detects the interrupt from the device. Now what I am
> missing is how does the kernel interrupt handler
> indicate to the user process that there was an
> interrupt and user process needs to do its thing....
Either make your user process block in a read / write / ioctl system
call, and wake it from your interrupt handler, or implement a
select() / poll() interface, so you don't have to block waiting for
this event alone.
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
In C we had to code our own bugs, in C++ we can inherit them.
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