[lkml]   [2008]   [May]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Oops with PREEMPT-RT on
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.


 \ /
  Last update: 2008-05-19 23:41    [W:0.059 / U:5.292 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site