Messages in this thread | | | Subject | Re: Ingo's realtime_preempt patch causes kernel oops | From | Daniel Walker <> | Date | Wed, 24 May 2006 09:06:03 -0700 |
| |
> Would IRQs stay masked until the thread has finished running? > > I would say yes. But the system is basically broken if you have the > same interrupt line that needs both to be threaded and NODELAY.
It's certainly less than and ideal situation .. If set an interrupt as SA_NODELAY you'd think that it's suppose to be high priority , but then you share it with something that's not high high priority which doesn't make a lot of sense ..
However, the PCI bus doesn't (as far as I know) allow for interrupts to easily be isolated .. So, with PCI, you may end up with potentially high priority interrupts shared with some other interrupt .. So it is a situation that could happen, maybe even often .
Daniel
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |