On Fri, 8 Mar 2002, Zwane Mwaikambo wrote:
> > However for cd-rom there are commands, which can
> > take quite a long time. Therefore there is the possiblity there
> > to provide a polling function, which will be engaged after the
> > interrupt happens in the above function:
>
> So are you suggesting perhaps that we change the request servicing to
> polling? I'm a bit confused as to how this would fit in with
> cdrom_decode_status (which in this case is called from the read_intr).
Ok how about the scenario i'm seeing. The cdrom is spewing constant I/O
errors and we go and check on these, they are actually _not_ in fact
taking a long time and actually preempting each other! Looking at the
code and the usage of ide_preempt, my guess is that checking the status is
a higher priority hence the queue jumping. How can we use a timer for this
one?
Thanks,
Zwane
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This archive was generated by hypermail 2b29 : Fri Mar 15 2002 - 22:00:08 EST