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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