Re: Doubt in bottom halves.

["Vijay Ram.C" <cvijay@xxxxxxxxxxxxxxxxxx>]

Hi Mulyadi
 I am sorry i was not able to present my requirement clearly..infact of the
two options that u mentioned,
the 1st one is wat i require..If i get 5 interrupts, then i want the tasklet
to get executed 5 times.Since this is the
requirement, the linked list implementation doesnt solve the purpose.

Thanks and Regards,
Vijay Ram.C



> Hello....
>
> > You can create a queue in which when interrupts occurs place your
> > data to be consumed in it and then from there you can schedule the
> > tasklet or can create thread which will consume the data from the
> > queue, so I don;t think you might lose any of the data/interrupt
> > processing ... (by the way I havn't tried/used interrupt handlers, so
> > I might be wrong) ............
>
> Allow me to elaborate :) OK Vijay, actually which one do you concern
> more:
> 1. need a precise number of tasklet invocation under certain time
> limitation? For example, on 5 consecutives interrupts, you want the
> same tasklet run 5 times?
>
> OR
>
> 2. there are new data coming from a device and it is copied to kernel
> mode pages on RAM (maybe as linked list). Then you trigger the tasklet
> to consume/process this data?
>
> Most likely (I think), you need #2. In that case, you can follow
> Fawaad's advice. Sorry, this is the best idea I can offer for
> now...please study the do_irq() and do_softirq() on
> arch/i386/kernel/irq.c (for kernel 2.4.x) for complete understanding on
> how all these things works. LDD3 is another great resource too..
>
> regards
>
> Mulyadi
>
>
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