Messages in this thread | | | Date | Mon, 19 May 2008 16:38:44 -0500 | From | Scott Wood <> | Subject | Re: Oops with PREEMPT-RT on 2.6.25.4 |
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Rune Torgersen wrote: > Scott Wood wrote: >> Almost certainly the latter. Is the disk interrupt shared with any >> other interrupts, that are marked IRQF_NODELAY? The -rt >> patch doesn't seem to handle mixing the two well. > > Disk is on a muxed PCI interrupt. None of the other interrupts on the > mux is fireing at the time.
Regardless of whether they're firing, any request_irq with IRQF_NODELAY will turn off threading for all handlers.
> Is is possible that the demuxer is not set up right? It is based loosely > on pq2-pci-pic.c
Try calling irq_set_chip_and_handler() with handle_level_irq, rather than irq_set_chip(). The -rt patch doesn't seem to have threadified the __do_IRQ() path.
-Scott
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