Messages in this thread | | | Date | Tue, 24 Jun 2008 03:52:54 +0400 | From | Anton Vorontsov <> | Subject | Re: [PATCH -rt] ide: fix interrupts processing issue with preempt-able hardirqs |
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On Tue, Jun 24, 2008 at 03:40:37AM +0400, Anton Vorontsov wrote: > IDE interrupt handler relies on the fact that, if necessary, hardirqs > will re-trigger on ISR exit. With fully preemtable IRQs this seems to be > not true, since if hardirq thread is currently running, and the same IRQ > raised again, then this IRQ will be simply lost.
Btw, I don't actually understand why interrupt "simply lost", IMO it should not.. :-/ But this what I'm observing via bunch of printks in the code flow. Maybe there is not so obvious race, which I can't see.
So, help needed. Either it is a proper fix, or it is a workaround for another bug somewhere else.
-- Anton Vorontsov email: cbouatmailru@gmail.com irc://irc.freenode.net/bd2
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