Messages in this thread | | | Date | Fri, 6 Oct 2006 07:42:22 +0200 (MEST) | From | Jan Engelhardt <> | Subject | Re: Using "Asynchronous Notifications" within an interrupt handler |
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> > My question is: is it safe to use the asynchronous notification > mechanism within an interrupt handler? I see that this call acquires a > bunch of locks before sending the signal to the process. Would this > cause any deadlocking situations? Or should I resort to the top and > bottom half approach for interrupt handling and handle the > notification in the bottom half?
It may be possible - I have an old driver for custom hardware lying around here, and it does this in the irq handler:
kill_fasync(&global.fasync_ptr, SIGIO, POLL_IN);
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