[PLUG] Asynchronous Notification
maalekar at gmail.com
Tue Mar 10 10:02:31 PDT 2009
> > For that I used fasync method. kill_fasync() called in interrupt handler
> > gpio.
> If the IRQ handler is getting called correctly, then check whether the
> userspace handler has a policy of dropping pending signals when the
> handler is getting executed. Can you print out logs at the point when
> a signal is added to the pending queue of the process?
kill_fasync posts SIGIO. SIGIO is delivered only when appended to empty
if I remember correctly.
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