Re: PS/2 mouse latency was Re: [linux-audio-dev] Re: [DATAPOINT] kernels and latencies

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Subject: Re: PS/2 mouse latency was Re: [linux-audio-dev] Re: [DATAPOINT] kernels and latencies
From: Richard Gooch (rgooch_AT_ras.ucalgary.ca)
Date: Tue Jul 04 2000 - 21:43:55 EEST

Alan Cox writes:
> > > The PS/2 hardware requires delays, but it does not require that
> > > interrupts are off for the entire period to my knowledge.
> >
> > OK, but there's still the locking. We can't just have the interrupt
> > handler frob the controller while elsewhere we're poking it, can we?
>
> Indeed we cannot. We need to do locking but we need to do it a
> different way.

Which leads to my other question: can we "ignore" the interrupt
(i.e. just update a flag somewhere) for later processing in a process
context?

Or can we block the interrupt? And hope no-one else is sharing it...

Or do you have some other scheme in mind?

                                Regards,

                                        Richard....
Permanent: rgooch_AT_atnf.csiro.au
Current: rgooch_AT_ras.ucalgary.ca

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